Merge branch 'develop'HEADv0.23.03releasemain

5 files changed, 469 insertions, 123 deletions

diff --git a/test/apps/test_index.py b/test/apps/test_index.py
index 9cdc656..6927044 100644
--- a/test/apps/test_index.py
+++ b/test/apps/test_index.py
@@ -1,16 +1,15 @@
-"""
 
-Part of the bsie test suite.
-A copy of the license is provided with the project.
-Author: Matthias Baumgartner, 2022
-"""
-# imports
+# standard imports
 import contextlib
 import io
 import os
-import rdflib
+import tempfile
 import unittest
 
+# external imports
+import rdflib
+import yaml
+
 # bsie imports
 from bsie.utils import ns
 
@@ -21,134 +20,283 @@ from bsie.apps.index import main
 ## code ##
 
 class TestIndex(unittest.TestCase):
+    def setUp(self):
+        config = {
+            'ReaderBuilder': {},
+            'ExtractorBuilder': [
+                {'bsie.extractor.preview.Preview': {
+                    'max_sides': [50],
+                    }},
+                {'bsie.extractor.generic.path.Path': {}},
+                {'bsie.extractor.generic.constant.Constant': {
+                    'schema': '''
+                        bse:author rdfs:subClassOf bsfs:Predicate ;
+                            rdfs:domain bsn:Entity ;
+                            rdfs:range xsd:string ;
+                            bsfs:unique "true"^^xsd:boolean .
+                        ''',
+                    'tuples': [['https://schema.bsfs.io/ie/Node/Entity#author', 'Me, myself, and I']],
+                  }},
+                {'bsie.extractor.image.colors_spatial.ColorsSpatial': {
+                    'width': 2,
+                    'height': 2,
+                    'exp': 2,
+                    }},
+                ]
+            }
+        # create config file
+        _, self.config_path = tempfile.mkstemp(prefix='bsie-test-', suffix='.yaml')
+        with open(self.config_path, 'wt') as cfile:
+            yaml.dump(config, cfile)
+
+    def tearDown(self):
+        if os.path.exists(self.config_path):
+            os.unlink(self.config_path)
+
+    def test_disclaimer(self):
+        print('Please wait, this test will take about 25 seconds')
+
+    def test_main_invalid(self):
+        outbuf = io.StringIO()
+        with contextlib.redirect_stdout(outbuf):
+            bsfs = main(['--config', self.config_path, os.path.join(os.path.dirname(__file__), 'inexistent-file.t')])
+        self.assertEqual(outbuf.getvalue().strip(), '')
+
     def test_main(self):
         bsfs = main([
+            '--config',
+            self.config_path,
             '-r',
-            '--user', 'http://example.com/me',
+            '--host', 'http://example.com',
+            '--user', 'me',
             os.path.join(os.path.dirname(__file__), 'testdir'),
             os.path.join(os.path.dirname(__file__), 'testfile'),
             ])
 
-        prefix = 'http://example.com/me/file#'
+        pre_file = 'http://example.com/me/file#'
+        pre_preview = 'http://example.com/me/preview#'
         self.assertTrue(set(bsfs._backend._graph).issuperset({
-            (rdflib.URIRef(prefix + '2f4109b40107cc50e0884755a1a961ed126887e49b8dbaf0e146b2e226aa6647'), rdflib.RDF.type, rdflib.URIRef(ns.bsfs.File)),
-            (rdflib.URIRef(prefix + '2f4109b40107cc50e0884755a1a961ed126887e49b8dbaf0e146b2e226aa6647'), rdflib.URIRef(ns.bse.author), rdflib.Literal('Me, myself, and I', datatype=rdflib.XSD.string)),
-            (rdflib.URIRef(prefix + '2f4109b40107cc50e0884755a1a961ed126887e49b8dbaf0e146b2e226aa6647'), rdflib.URIRef(ns.bse.filename), rdflib.Literal('alpha_second', datatype=rdflib.XSD.string)),
-            (rdflib.URIRef(prefix + '2f4109b40107cc50e0884755a1a961ed126887e49b8dbaf0e146b2e226aa6647'), rdflib.URIRef(ns.bse.filesize), rdflib.Literal('696', datatype=rdflib.XSD.integer)),
-            (rdflib.URIRef(prefix + '441f3d10c8ff489fe8e33e639606512f6c463151cc429de7e554b9af670c2ece'), rdflib.RDF.type, rdflib.URIRef(ns.bsfs.File)),
-            (rdflib.URIRef(prefix + '441f3d10c8ff489fe8e33e639606512f6c463151cc429de7e554b9af670c2ece'), rdflib.URIRef(ns.bse.author), rdflib.Literal('Me, myself, and I', datatype=rdflib.XSD.string)),
-            (rdflib.URIRef(prefix + '441f3d10c8ff489fe8e33e639606512f6c463151cc429de7e554b9af670c2ece'), rdflib.URIRef(ns.bse.filename), rdflib.Literal('omega_second', datatype=rdflib.XSD.string)),
-            (rdflib.URIRef(prefix + '441f3d10c8ff489fe8e33e639606512f6c463151cc429de7e554b9af670c2ece'), rdflib.URIRef(ns.bse.filesize), rdflib.Literal('503', datatype=rdflib.XSD.integer)),
-            (rdflib.URIRef(prefix + '69b98ecf7aff3e95b09688ba93331678eb8397817111f674c9558e6dd8f5e871'), rdflib.RDF.type, rdflib.URIRef(ns.bsfs.File)),
-            (rdflib.URIRef(prefix + '69b98ecf7aff3e95b09688ba93331678eb8397817111f674c9558e6dd8f5e871'), rdflib.URIRef(ns.bse.author), rdflib.Literal('Me, myself, and I', datatype=rdflib.XSD.string)),
-            (rdflib.URIRef(prefix + '69b98ecf7aff3e95b09688ba93331678eb8397817111f674c9558e6dd8f5e871'), rdflib.URIRef(ns.bse.filename), rdflib.Literal('td_first', datatype=rdflib.XSD.string)),
-            (rdflib.URIRef(prefix + '69b98ecf7aff3e95b09688ba93331678eb8397817111f674c9558e6dd8f5e871'), rdflib.URIRef(ns.bse.filesize), rdflib.Literal('911', datatype=rdflib.XSD.integer)),
-            (rdflib.URIRef(prefix + '78f7eb7f0d8221cdb2cb26c978fa42a11f75eb87becc768f4474134cb1e06926'), rdflib.RDF.type, rdflib.URIRef(ns.bsfs.File)),
-            (rdflib.URIRef(prefix + '78f7eb7f0d8221cdb2cb26c978fa42a11f75eb87becc768f4474134cb1e06926'), rdflib.URIRef(ns.bse.author), rdflib.Literal('Me, myself, and I', datatype=rdflib.XSD.string)),
-            (rdflib.URIRef(prefix + '78f7eb7f0d8221cdb2cb26c978fa42a11f75eb87becc768f4474134cb1e06926'), rdflib.URIRef(ns.bse.filename), rdflib.Literal('testfile', datatype=rdflib.XSD.string)),
-            (rdflib.URIRef(prefix + '78f7eb7f0d8221cdb2cb26c978fa42a11f75eb87becc768f4474134cb1e06926'), rdflib.URIRef(ns.bse.filesize), rdflib.Literal('885', datatype=rdflib.XSD.integer)),
-            (rdflib.URIRef(prefix + '80818b8ec2ee1919116dba9c8a7e0a4608313cf3b463cd88e9ed77a700dd92d3'), rdflib.RDF.type, rdflib.URIRef(ns.bsfs.File)),
-            (rdflib.URIRef(prefix + '80818b8ec2ee1919116dba9c8a7e0a4608313cf3b463cd88e9ed77a700dd92d3'), rdflib.URIRef(ns.bse.author), rdflib.Literal('Me, myself, and I', datatype=rdflib.XSD.string)),
-            (rdflib.URIRef(prefix + '80818b8ec2ee1919116dba9c8a7e0a4608313cf3b463cd88e9ed77a700dd92d3'), rdflib.URIRef(ns.bse.filename), rdflib.Literal('bar_first', datatype=rdflib.XSD.string)),
-            (rdflib.URIRef(prefix + '80818b8ec2ee1919116dba9c8a7e0a4608313cf3b463cd88e9ed77a700dd92d3'), rdflib.URIRef(ns.bse.filesize), rdflib.Literal('956', datatype=rdflib.XSD.integer)),
-            (rdflib.URIRef(prefix + '976d2ea0e58488678cc7e435fbfadabfb6eb6cf50ad51862f38f73729ed11795'), rdflib.RDF.type, rdflib.URIRef(ns.bsfs.File)),
-            (rdflib.URIRef(prefix + '976d2ea0e58488678cc7e435fbfadabfb6eb6cf50ad51862f38f73729ed11795'), rdflib.URIRef(ns.bse.author), rdflib.Literal('Me, myself, and I', datatype=rdflib.XSD.string)),
-            (rdflib.URIRef(prefix + '976d2ea0e58488678cc7e435fbfadabfb6eb6cf50ad51862f38f73729ed11795'), rdflib.URIRef(ns.bse.filename), rdflib.Literal('omega_first', datatype=rdflib.XSD.string)),
-            (rdflib.URIRef(prefix + '976d2ea0e58488678cc7e435fbfadabfb6eb6cf50ad51862f38f73729ed11795'), rdflib.URIRef(ns.bse.filesize), rdflib.Literal('648', datatype=rdflib.XSD.integer)),
-            (rdflib.URIRef(prefix + '997e2fbb7494a3818ec782d2bc87bf1cffafba6b9c0f658e4a6c18a723e944d3'), rdflib.RDF.type, rdflib.URIRef(ns.bsfs.File)),
-            (rdflib.URIRef(prefix + '997e2fbb7494a3818ec782d2bc87bf1cffafba6b9c0f658e4a6c18a723e944d3'), rdflib.URIRef(ns.bse.author), rdflib.Literal('Me, myself, and I', datatype=rdflib.XSD.string)),
-            (rdflib.URIRef(prefix + '997e2fbb7494a3818ec782d2bc87bf1cffafba6b9c0f658e4a6c18a723e944d3'), rdflib.URIRef(ns.bse.filename), rdflib.Literal('alpha_first', datatype=rdflib.XSD.string)),
-            (rdflib.URIRef(prefix + '997e2fbb7494a3818ec782d2bc87bf1cffafba6b9c0f658e4a6c18a723e944d3'), rdflib.URIRef(ns.bse.filesize), rdflib.Literal('754', datatype=rdflib.XSD.integer)),
-            (rdflib.URIRef(prefix + 'a8af899ecdab60dfaea8ec7f934053624c80a1054539e163f2c7eaa986c2777d'), rdflib.RDF.type, rdflib.URIRef(ns.bsfs.File)),
-            (rdflib.URIRef(prefix + 'a8af899ecdab60dfaea8ec7f934053624c80a1054539e163f2c7eaa986c2777d'), rdflib.URIRef(ns.bse.author), rdflib.Literal('Me, myself, and I', datatype=rdflib.XSD.string)),
-            (rdflib.URIRef(prefix + 'a8af899ecdab60dfaea8ec7f934053624c80a1054539e163f2c7eaa986c2777d'), rdflib.URIRef(ns.bse.filename), rdflib.Literal('foo_second', datatype=rdflib.XSD.string)),
-            (rdflib.URIRef(prefix + 'a8af899ecdab60dfaea8ec7f934053624c80a1054539e163f2c7eaa986c2777d'), rdflib.URIRef(ns.bse.filesize), rdflib.Literal('585', datatype=rdflib.XSD.integer)),
-            (rdflib.URIRef(prefix + 'b8fd7fba818254166a6043195004138ebda6923e012442f819a2c49671136c70'), rdflib.RDF.type, rdflib.URIRef(ns.bsfs.File)),
-            (rdflib.URIRef(prefix + 'b8fd7fba818254166a6043195004138ebda6923e012442f819a2c49671136c70'), rdflib.URIRef(ns.bse.author), rdflib.Literal('Me, myself, and I', datatype=rdflib.XSD.string)),
-            (rdflib.URIRef(prefix + 'b8fd7fba818254166a6043195004138ebda6923e012442f819a2c49671136c70'), rdflib.URIRef(ns.bse.filename), rdflib.Literal('bar_second', datatype=rdflib.XSD.string)),
-            (rdflib.URIRef(prefix + 'b8fd7fba818254166a6043195004138ebda6923e012442f819a2c49671136c70'), rdflib.URIRef(ns.bse.filesize), rdflib.Literal('636', datatype=rdflib.XSD.integer)),
-            (rdflib.URIRef(prefix + 'd43758ace82154a1cc10ca0dfef63cb20dd831f9c87edd6dc06539eefe67371d'), rdflib.RDF.type, rdflib.URIRef(ns.bsfs.File)),
-            (rdflib.URIRef(prefix + 'd43758ace82154a1cc10ca0dfef63cb20dd831f9c87edd6dc06539eefe67371d'), rdflib.URIRef(ns.bse.author), rdflib.Literal('Me, myself, and I', datatype=rdflib.XSD.string)),
-            (rdflib.URIRef(prefix + 'd43758ace82154a1cc10ca0dfef63cb20dd831f9c87edd6dc06539eefe67371d'), rdflib.URIRef(ns.bse.filename), rdflib.Literal('foo_first', datatype=rdflib.XSD.string)),
-            (rdflib.URIRef(prefix + 'd43758ace82154a1cc10ca0dfef63cb20dd831f9c87edd6dc06539eefe67371d'), rdflib.URIRef(ns.bse.filesize), rdflib.Literal('546', datatype=rdflib.XSD.integer)),
-            (rdflib.URIRef(prefix + 'd803187cbf3676ae9d38126270a6152c60431589aa3bb3824baf8954e9c097f1'), rdflib.RDF.type, rdflib.URIRef(ns.bsfs.File)),
-            (rdflib.URIRef(prefix + 'd803187cbf3676ae9d38126270a6152c60431589aa3bb3824baf8954e9c097f1'), rdflib.URIRef(ns.bse.author), rdflib.Literal('Me, myself, and I', datatype=rdflib.XSD.string)),
-            (rdflib.URIRef(prefix + 'd803187cbf3676ae9d38126270a6152c60431589aa3bb3824baf8954e9c097f1'), rdflib.URIRef(ns.bse.filename), rdflib.Literal('td_second', datatype=rdflib.XSD.string)),
-            (rdflib.URIRef(prefix + 'd803187cbf3676ae9d38126270a6152c60431589aa3bb3824baf8954e9c097f1'), rdflib.URIRef(ns.bse.filesize), rdflib.Literal('703', datatype=rdflib.XSD.integer)),
+            # files and properties
+            (rdflib.URIRef(pre_file + '2f4109b40107cc50e0884755a1a961ed126887e49b8dbaf0e146b2e226aa6647'), rdflib.RDF.type, rdflib.URIRef(ns.bsn.Entity)),
+            (rdflib.URIRef(pre_file + '2f4109b40107cc50e0884755a1a961ed126887e49b8dbaf0e146b2e226aa6647'), rdflib.URIRef(ns.bse.author), rdflib.Literal('Me, myself, and I', datatype=rdflib.XSD.string)),
+            (rdflib.URIRef(pre_file + '2f4109b40107cc50e0884755a1a961ed126887e49b8dbaf0e146b2e226aa6647'), rdflib.URIRef(ns.bse.filename), rdflib.Literal('alpha_second', datatype=rdflib.XSD.string)),
+            (rdflib.URIRef(pre_file + '441f3d10c8ff489fe8e33e639606512f6c463151cc429de7e554b9af670c2ece'), rdflib.RDF.type, rdflib.URIRef(ns.bsn.Entity)),
+            (rdflib.URIRef(pre_file + '441f3d10c8ff489fe8e33e639606512f6c463151cc429de7e554b9af670c2ece'), rdflib.URIRef(ns.bse.author), rdflib.Literal('Me, myself, and I', datatype=rdflib.XSD.string)),
+            (rdflib.URIRef(pre_file + '441f3d10c8ff489fe8e33e639606512f6c463151cc429de7e554b9af670c2ece'), rdflib.URIRef(ns.bse.filename), rdflib.Literal('omega_second', datatype=rdflib.XSD.string)),
+            (rdflib.URIRef(pre_file + '69b98ecf7aff3e95b09688ba93331678eb8397817111f674c9558e6dd8f5e871'), rdflib.RDF.type, rdflib.URIRef(ns.bsn.Entity)),
+            (rdflib.URIRef(pre_file + '69b98ecf7aff3e95b09688ba93331678eb8397817111f674c9558e6dd8f5e871'), rdflib.URIRef(ns.bse.author), rdflib.Literal('Me, myself, and I', datatype=rdflib.XSD.string)),
+            (rdflib.URIRef(pre_file + '69b98ecf7aff3e95b09688ba93331678eb8397817111f674c9558e6dd8f5e871'), rdflib.URIRef(ns.bse.filename), rdflib.Literal('td_first', datatype=rdflib.XSD.string)),
+            (rdflib.URIRef(pre_file + '78f7eb7f0d8221cdb2cb26c978fa42a11f75eb87becc768f4474134cb1e06926'), rdflib.RDF.type, rdflib.URIRef(ns.bsn.Entity)),
+            (rdflib.URIRef(pre_file + '78f7eb7f0d8221cdb2cb26c978fa42a11f75eb87becc768f4474134cb1e06926'), rdflib.URIRef(ns.bse.author), rdflib.Literal('Me, myself, and I', datatype=rdflib.XSD.string)),
+            (rdflib.URIRef(pre_file + '78f7eb7f0d8221cdb2cb26c978fa42a11f75eb87becc768f4474134cb1e06926'), rdflib.URIRef(ns.bse.filename), rdflib.Literal('testfile', datatype=rdflib.XSD.string)),
+            (rdflib.URIRef(pre_file + '80818b8ec2ee1919116dba9c8a7e0a4608313cf3b463cd88e9ed77a700dd92d3'), rdflib.RDF.type, rdflib.URIRef(ns.bsn.Entity)),
+            (rdflib.URIRef(pre_file + '80818b8ec2ee1919116dba9c8a7e0a4608313cf3b463cd88e9ed77a700dd92d3'), rdflib.URIRef(ns.bse.author), rdflib.Literal('Me, myself, and I', datatype=rdflib.XSD.string)),
+            (rdflib.URIRef(pre_file + '80818b8ec2ee1919116dba9c8a7e0a4608313cf3b463cd88e9ed77a700dd92d3'), rdflib.URIRef(ns.bse.filename), rdflib.Literal('bar_first', datatype=rdflib.XSD.string)),
+            (rdflib.URIRef(pre_file + '976d2ea0e58488678cc7e435fbfadabfb6eb6cf50ad51862f38f73729ed11795'), rdflib.RDF.type, rdflib.URIRef(ns.bsn.Entity)),
+            (rdflib.URIRef(pre_file + '976d2ea0e58488678cc7e435fbfadabfb6eb6cf50ad51862f38f73729ed11795'), rdflib.URIRef(ns.bse.author), rdflib.Literal('Me, myself, and I', datatype=rdflib.XSD.string)),
+            (rdflib.URIRef(pre_file + '976d2ea0e58488678cc7e435fbfadabfb6eb6cf50ad51862f38f73729ed11795'), rdflib.URIRef(ns.bse.filename), rdflib.Literal('omega_first', datatype=rdflib.XSD.string)),
+            (rdflib.URIRef(pre_file + '997e2fbb7494a3818ec782d2bc87bf1cffafba6b9c0f658e4a6c18a723e944d3'), rdflib.RDF.type, rdflib.URIRef(ns.bsn.Entity)),
+            (rdflib.URIRef(pre_file + '997e2fbb7494a3818ec782d2bc87bf1cffafba6b9c0f658e4a6c18a723e944d3'), rdflib.URIRef(ns.bse.author), rdflib.Literal('Me, myself, and I', datatype=rdflib.XSD.string)),
+            (rdflib.URIRef(pre_file + '997e2fbb7494a3818ec782d2bc87bf1cffafba6b9c0f658e4a6c18a723e944d3'), rdflib.URIRef(ns.bse.filename), rdflib.Literal('alpha_first', datatype=rdflib.XSD.string)),
+            (rdflib.URIRef(pre_file + 'a8af899ecdab60dfaea8ec7f934053624c80a1054539e163f2c7eaa986c2777d'), rdflib.RDF.type, rdflib.URIRef(ns.bsn.Entity)),
+            (rdflib.URIRef(pre_file + 'a8af899ecdab60dfaea8ec7f934053624c80a1054539e163f2c7eaa986c2777d'), rdflib.URIRef(ns.bse.author), rdflib.Literal('Me, myself, and I', datatype=rdflib.XSD.string)),
+            (rdflib.URIRef(pre_file + 'a8af899ecdab60dfaea8ec7f934053624c80a1054539e163f2c7eaa986c2777d'), rdflib.URIRef(ns.bse.filename), rdflib.Literal('foo_second', datatype=rdflib.XSD.string)),
+            (rdflib.URIRef(pre_file + 'b8fd7fba818254166a6043195004138ebda6923e012442f819a2c49671136c70'), rdflib.RDF.type, rdflib.URIRef(ns.bsn.Entity)),
+            (rdflib.URIRef(pre_file + 'b8fd7fba818254166a6043195004138ebda6923e012442f819a2c49671136c70'), rdflib.URIRef(ns.bse.author), rdflib.Literal('Me, myself, and I', datatype=rdflib.XSD.string)),
+            (rdflib.URIRef(pre_file + 'b8fd7fba818254166a6043195004138ebda6923e012442f819a2c49671136c70'), rdflib.URIRef(ns.bse.filename), rdflib.Literal('bar_second', datatype=rdflib.XSD.string)),
+            (rdflib.URIRef(pre_file + 'd43758ace82154a1cc10ca0dfef63cb20dd831f9c87edd6dc06539eefe67371d'), rdflib.RDF.type, rdflib.URIRef(ns.bsn.Entity)),
+            (rdflib.URIRef(pre_file + 'd43758ace82154a1cc10ca0dfef63cb20dd831f9c87edd6dc06539eefe67371d'), rdflib.URIRef(ns.bse.author), rdflib.Literal('Me, myself, and I', datatype=rdflib.XSD.string)),
+            (rdflib.URIRef(pre_file + 'd43758ace82154a1cc10ca0dfef63cb20dd831f9c87edd6dc06539eefe67371d'), rdflib.URIRef(ns.bse.filename), rdflib.Literal('foo_first', datatype=rdflib.XSD.string)),
+            (rdflib.URIRef(pre_file + 'd803187cbf3676ae9d38126270a6152c60431589aa3bb3824baf8954e9c097f1'), rdflib.RDF.type, rdflib.URIRef(ns.bsn.Entity)),
+            (rdflib.URIRef(pre_file + 'd803187cbf3676ae9d38126270a6152c60431589aa3bb3824baf8954e9c097f1'), rdflib.URIRef(ns.bse.author), rdflib.Literal('Me, myself, and I', datatype=rdflib.XSD.string)),
+            (rdflib.URIRef(pre_file + 'd803187cbf3676ae9d38126270a6152c60431589aa3bb3824baf8954e9c097f1'), rdflib.URIRef(ns.bse.filename), rdflib.Literal('td_second', datatype=rdflib.XSD.string)),
+            (rdflib.URIRef(pre_file + 'accb115d266ad60c53cd01a7f7130f245886ce8eaf69bc85319febc11d9fe089'), rdflib.RDF.type, rdflib.URIRef(ns.bsn.Entity)),
+            (rdflib.URIRef(pre_file + 'accb115d266ad60c53cd01a7f7130f245886ce8eaf69bc85319febc11d9fe089'), rdflib.URIRef(ns.bse.author), rdflib.Literal('Me, myself, and I', datatype=rdflib.XSD.string)),
+            (rdflib.URIRef(pre_file + 'accb115d266ad60c53cd01a7f7130f245886ce8eaf69bc85319febc11d9fe089'), rdflib.URIRef(ns.bse.filename), rdflib.Literal('testimage.jpg', datatype=rdflib.XSD.string)),
+            # features
+            (rdflib.URIRef(pre_file + 'accb115d266ad60c53cd01a7f7130f245886ce8eaf69bc85319febc11d9fe089'), rdflib.URIRef('https://schema.bsfs.io/ie/Node/Entity#colors_spatial_0658f2234a054e1dd59a14462c89f7733e019160419c796356aa831498bd0a04'),
+                rdflib.Literal(
+                    '(91, 127, 121, 94, 138, 167, 163, 134, 190, 138, 170, 156, 121, 142, 159)',
+                    datatype=rdflib.URIRef('https://schema.bsfs.io/ie/Literal/Array/Feature/ColorsSpatial#0658f2234a054e1dd59a14462c89f7733e019160419c796356aa831498bd0a04'))),
+            # links to previews
+            (rdflib.URIRef(pre_file + '2f4109b40107cc50e0884755a1a961ed126887e49b8dbaf0e146b2e226aa6647'), rdflib.URIRef(ns.bse.preview), rdflib.URIRef(pre_preview + '79cb8a7e6369361a4f4cb7ff729c1ed3fcf87204769623d6fbd6ebfae601e5c7_s50')),
+            (rdflib.URIRef(pre_file + '441f3d10c8ff489fe8e33e639606512f6c463151cc429de7e554b9af670c2ece'), rdflib.URIRef(ns.bse.preview), rdflib.URIRef(pre_preview + 'a8b3245636074d5370283b690281abda8ffdff12ce8b1af77c8bc0a4c85be860_s50')),
+            (rdflib.URIRef(pre_file + '69b98ecf7aff3e95b09688ba93331678eb8397817111f674c9558e6dd8f5e871'), rdflib.URIRef(ns.bse.preview), rdflib.URIRef(pre_preview + '968b9aa178585bc8d1fca0e4e32b8cf30b3941eff72f34e320584aaae8fd23ac_s50')),
+            (rdflib.URIRef(pre_file + '78f7eb7f0d8221cdb2cb26c978fa42a11f75eb87becc768f4474134cb1e06926'), rdflib.URIRef(ns.bse.preview), rdflib.URIRef(pre_preview + 'dbfd8ebc0557c4925e9ff8411629a74a15eca934a4c2a6bd3134dd81d2f95a36_s50')),
+            (rdflib.URIRef(pre_file + '80818b8ec2ee1919116dba9c8a7e0a4608313cf3b463cd88e9ed77a700dd92d3'), rdflib.URIRef(ns.bse.preview), rdflib.URIRef(pre_preview + '567049149769e1d02e6af6cfee3991f7cf0cbc935cbf6a566047f40155fb13a8_s50')),
+            (rdflib.URIRef(pre_file + '976d2ea0e58488678cc7e435fbfadabfb6eb6cf50ad51862f38f73729ed11795'), rdflib.URIRef(ns.bse.preview), rdflib.URIRef(pre_preview + 'df2185d8927ccef65c92fc90b94e800b02791354d8dede9dd9aa0e2c2cb1e91e_s50')),
+            (rdflib.URIRef(pre_file + '997e2fbb7494a3818ec782d2bc87bf1cffafba6b9c0f658e4a6c18a723e944d3'), rdflib.URIRef(ns.bse.preview), rdflib.URIRef(pre_preview + '9827509a74a60dfceed11936f7f624e9c932f66c8c0d20d355d56f8c3c9b56b1_s50')),
+            (rdflib.URIRef(pre_file + 'a8af899ecdab60dfaea8ec7f934053624c80a1054539e163f2c7eaa986c2777d'), rdflib.URIRef(ns.bse.preview), rdflib.URIRef(pre_preview + '7a975385a110c21fcd12e238fab9501550fa02f6328749068a3bffd65e291027_s50')),
+            (rdflib.URIRef(pre_file + 'accb115d266ad60c53cd01a7f7130f245886ce8eaf69bc85319febc11d9fe089'), rdflib.URIRef(ns.bse.preview), rdflib.URIRef(pre_preview + '2656e303d7218300326df73b64f312d8b37eb980358be27a38b5f63dae259be3_s50')),
+            (rdflib.URIRef(pre_file + 'b8fd7fba818254166a6043195004138ebda6923e012442f819a2c49671136c70'), rdflib.URIRef(ns.bse.preview), rdflib.URIRef(pre_preview + 'a63c84e647138a2b68113474212f6aee542b3707171ff178551db3c296e59817_s50')),
+            (rdflib.URIRef(pre_file + 'd43758ace82154a1cc10ca0dfef63cb20dd831f9c87edd6dc06539eefe67371d'), rdflib.URIRef(ns.bse.preview), rdflib.URIRef(pre_preview + '26f16643b2570ac5b2d1f8c373d492cb724aae2dd8d71a0b63647838ed651254_s50')),
+            (rdflib.URIRef(pre_file + 'd803187cbf3676ae9d38126270a6152c60431589aa3bb3824baf8954e9c097f1'), rdflib.URIRef(ns.bse.preview), rdflib.URIRef(pre_preview + '5d1235838c3d501204bb09c2de563d7e4a7fd17b7ec4ff302221c0e88c4741aa_s50')),
+            # preview dimensions
+            (rdflib.URIRef(pre_preview + '2656e303d7218300326df73b64f312d8b37eb980358be27a38b5f63dae259be3_s50'), rdflib.URIRef(ns.bsp.height), rdflib.Literal('33', datatype=rdflib.URIRef('http://www.w3.org/2001/XMLSchema#integer'))),
+            (rdflib.URIRef(pre_preview + '2656e303d7218300326df73b64f312d8b37eb980358be27a38b5f63dae259be3_s50'), rdflib.URIRef(ns.bsp.width), rdflib.Literal('50', datatype=rdflib.URIRef('http://www.w3.org/2001/XMLSchema#integer'))),
+            (rdflib.URIRef(pre_preview + '2656e303d7218300326df73b64f312d8b37eb980358be27a38b5f63dae259be3_s50'), rdflib.RDF.type, rdflib.URIRef(ns.bsn.Preview)),
+            (rdflib.URIRef(pre_preview + '26f16643b2570ac5b2d1f8c373d492cb724aae2dd8d71a0b63647838ed651254_s50'), rdflib.URIRef(ns.bsp.height), rdflib.Literal('50', datatype=rdflib.URIRef('http://www.w3.org/2001/XMLSchema#integer'))),
+            (rdflib.URIRef(pre_preview + '26f16643b2570ac5b2d1f8c373d492cb724aae2dd8d71a0b63647838ed651254_s50'), rdflib.URIRef(ns.bsp.width), rdflib.Literal('36', datatype=rdflib.URIRef('http://www.w3.org/2001/XMLSchema#integer'))),
+            (rdflib.URIRef(pre_preview + '26f16643b2570ac5b2d1f8c373d492cb724aae2dd8d71a0b63647838ed651254_s50'), rdflib.RDF.type, rdflib.URIRef(ns.bsn.Preview)),
+            (rdflib.URIRef(pre_preview + '567049149769e1d02e6af6cfee3991f7cf0cbc935cbf6a566047f40155fb13a8_s50'), rdflib.URIRef(ns.bsp.height), rdflib.Literal('50', datatype=rdflib.URIRef('http://www.w3.org/2001/XMLSchema#integer'))),
+            (rdflib.URIRef(pre_preview + '567049149769e1d02e6af6cfee3991f7cf0cbc935cbf6a566047f40155fb13a8_s50'), rdflib.URIRef(ns.bsp.width), rdflib.Literal('36', datatype=rdflib.URIRef('http://www.w3.org/2001/XMLSchema#integer'))),
+            (rdflib.URIRef(pre_preview + '567049149769e1d02e6af6cfee3991f7cf0cbc935cbf6a566047f40155fb13a8_s50'), rdflib.RDF.type, rdflib.URIRef(ns.bsn.Preview)),
+            (rdflib.URIRef(pre_preview + '5d1235838c3d501204bb09c2de563d7e4a7fd17b7ec4ff302221c0e88c4741aa_s50'), rdflib.URIRef(ns.bsp.height), rdflib.Literal('50', datatype=rdflib.URIRef('http://www.w3.org/2001/XMLSchema#integer'))),
+            (rdflib.URIRef(pre_preview + '5d1235838c3d501204bb09c2de563d7e4a7fd17b7ec4ff302221c0e88c4741aa_s50'), rdflib.URIRef(ns.bsp.width), rdflib.Literal('36', datatype=rdflib.URIRef('http://www.w3.org/2001/XMLSchema#integer'))),
+            (rdflib.URIRef(pre_preview + '5d1235838c3d501204bb09c2de563d7e4a7fd17b7ec4ff302221c0e88c4741aa_s50'), rdflib.RDF.type, rdflib.URIRef(ns.bsn.Preview)),
+            (rdflib.URIRef(pre_preview + '79cb8a7e6369361a4f4cb7ff729c1ed3fcf87204769623d6fbd6ebfae601e5c7_s50'), rdflib.URIRef(ns.bsp.height), rdflib.Literal('50', datatype=rdflib.URIRef('http://www.w3.org/2001/XMLSchema#integer'))),
+            (rdflib.URIRef(pre_preview + '79cb8a7e6369361a4f4cb7ff729c1ed3fcf87204769623d6fbd6ebfae601e5c7_s50'), rdflib.URIRef(ns.bsp.width), rdflib.Literal('36', datatype=rdflib.URIRef('http://www.w3.org/2001/XMLSchema#integer'))),
+            (rdflib.URIRef(pre_preview + '79cb8a7e6369361a4f4cb7ff729c1ed3fcf87204769623d6fbd6ebfae601e5c7_s50'), rdflib.RDF.type, rdflib.URIRef(ns.bsn.Preview)),
+            (rdflib.URIRef(pre_preview + '7a975385a110c21fcd12e238fab9501550fa02f6328749068a3bffd65e291027_s50'), rdflib.URIRef(ns.bsp.height), rdflib.Literal('50', datatype=rdflib.URIRef('http://www.w3.org/2001/XMLSchema#integer'))),
+            (rdflib.URIRef(pre_preview + '7a975385a110c21fcd12e238fab9501550fa02f6328749068a3bffd65e291027_s50'), rdflib.URIRef(ns.bsp.width), rdflib.Literal('36', datatype=rdflib.URIRef('http://www.w3.org/2001/XMLSchema#integer'))),
+            (rdflib.URIRef(pre_preview + '7a975385a110c21fcd12e238fab9501550fa02f6328749068a3bffd65e291027_s50'), rdflib.RDF.type, rdflib.URIRef(ns.bsn.Preview)),
+            (rdflib.URIRef(pre_preview + '968b9aa178585bc8d1fca0e4e32b8cf30b3941eff72f34e320584aaae8fd23ac_s50'), rdflib.URIRef(ns.bsp.height), rdflib.Literal('50', datatype=rdflib.URIRef('http://www.w3.org/2001/XMLSchema#integer'))),
+            (rdflib.URIRef(pre_preview + '968b9aa178585bc8d1fca0e4e32b8cf30b3941eff72f34e320584aaae8fd23ac_s50'), rdflib.URIRef(ns.bsp.width), rdflib.Literal('36', datatype=rdflib.URIRef('http://www.w3.org/2001/XMLSchema#integer'))),
+            (rdflib.URIRef(pre_preview + '968b9aa178585bc8d1fca0e4e32b8cf30b3941eff72f34e320584aaae8fd23ac_s50'), rdflib.RDF.type, rdflib.URIRef(ns.bsn.Preview)),
+            (rdflib.URIRef(pre_preview + '9827509a74a60dfceed11936f7f624e9c932f66c8c0d20d355d56f8c3c9b56b1_s50'), rdflib.URIRef(ns.bsp.height), rdflib.Literal('50', datatype=rdflib.URIRef('http://www.w3.org/2001/XMLSchema#integer'))),
+            (rdflib.URIRef(pre_preview + '9827509a74a60dfceed11936f7f624e9c932f66c8c0d20d355d56f8c3c9b56b1_s50'), rdflib.URIRef(ns.bsp.width), rdflib.Literal('36', datatype=rdflib.URIRef('http://www.w3.org/2001/XMLSchema#integer'))),
+            (rdflib.URIRef(pre_preview + '9827509a74a60dfceed11936f7f624e9c932f66c8c0d20d355d56f8c3c9b56b1_s50'), rdflib.RDF.type, rdflib.URIRef(ns.bsn.Preview)),
+            (rdflib.URIRef(pre_preview + 'a63c84e647138a2b68113474212f6aee542b3707171ff178551db3c296e59817_s50'), rdflib.URIRef(ns.bsp.height), rdflib.Literal('50', datatype=rdflib.URIRef('http://www.w3.org/2001/XMLSchema#integer'))),
+            (rdflib.URIRef(pre_preview + 'a63c84e647138a2b68113474212f6aee542b3707171ff178551db3c296e59817_s50'), rdflib.URIRef(ns.bsp.width), rdflib.Literal('36', datatype=rdflib.URIRef('http://www.w3.org/2001/XMLSchema#integer'))),
+            (rdflib.URIRef(pre_preview + 'a63c84e647138a2b68113474212f6aee542b3707171ff178551db3c296e59817_s50'), rdflib.RDF.type, rdflib.URIRef(ns.bsn.Preview)),
+            (rdflib.URIRef(pre_preview + 'a8b3245636074d5370283b690281abda8ffdff12ce8b1af77c8bc0a4c85be860_s50'), rdflib.URIRef(ns.bsp.height), rdflib.Literal('50', datatype=rdflib.URIRef('http://www.w3.org/2001/XMLSchema#integer'))),
+            (rdflib.URIRef(pre_preview + 'a8b3245636074d5370283b690281abda8ffdff12ce8b1af77c8bc0a4c85be860_s50'), rdflib.URIRef(ns.bsp.width), rdflib.Literal('36', datatype=rdflib.URIRef('http://www.w3.org/2001/XMLSchema#integer'))),
+            (rdflib.URIRef(pre_preview + 'a8b3245636074d5370283b690281abda8ffdff12ce8b1af77c8bc0a4c85be860_s50'), rdflib.RDF.type, rdflib.URIRef(ns.bsn.Preview)),
+            (rdflib.URIRef(pre_preview + 'dbfd8ebc0557c4925e9ff8411629a74a15eca934a4c2a6bd3134dd81d2f95a36_s50'), rdflib.URIRef(ns.bsp.height), rdflib.Literal('50', datatype=rdflib.URIRef('http://www.w3.org/2001/XMLSchema#integer'))),
+            (rdflib.URIRef(pre_preview + 'dbfd8ebc0557c4925e9ff8411629a74a15eca934a4c2a6bd3134dd81d2f95a36_s50'), rdflib.URIRef(ns.bsp.width), rdflib.Literal('36', datatype=rdflib.URIRef('http://www.w3.org/2001/XMLSchema#integer'))),
+            (rdflib.URIRef(pre_preview + 'dbfd8ebc0557c4925e9ff8411629a74a15eca934a4c2a6bd3134dd81d2f95a36_s50'), rdflib.RDF.type, rdflib.URIRef(ns.bsn.Preview)),
+            (rdflib.URIRef(pre_preview + 'df2185d8927ccef65c92fc90b94e800b02791354d8dede9dd9aa0e2c2cb1e91e_s50'), rdflib.URIRef(ns.bsp.height), rdflib.Literal('50', datatype=rdflib.URIRef('http://www.w3.org/2001/XMLSchema#integer'))),
+            (rdflib.URIRef(pre_preview + 'df2185d8927ccef65c92fc90b94e800b02791354d8dede9dd9aa0e2c2cb1e91e_s50'), rdflib.URIRef(ns.bsp.width), rdflib.Literal('36', datatype=rdflib.URIRef('http://www.w3.org/2001/XMLSchema#integer'))),
+            (rdflib.URIRef(pre_preview + 'df2185d8927ccef65c92fc90b94e800b02791354d8dede9dd9aa0e2c2cb1e91e_s50'), rdflib.RDF.type, rdflib.URIRef(ns.bsn.Preview)),
+            # assets
+            (rdflib.URIRef(pre_preview + '2656e303d7218300326df73b64f312d8b37eb980358be27a38b5f63dae259be3_s50'), rdflib.URIRef(ns.bsp.asset), rdflib.Literal('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', datatype=rdflib.URIRef(ns.bsl.BinaryBlob))),
+            (rdflib.URIRef(pre_preview + '26f16643b2570ac5b2d1f8c373d492cb724aae2dd8d71a0b63647838ed651254_s50'), rdflib.URIRef(ns.bsp.asset), rdflib.Literal('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', datatype=rdflib.URIRef(ns.bsl.BinaryBlob))),
+            (rdflib.URIRef(pre_preview + '5d1235838c3d501204bb09c2de563d7e4a7fd17b7ec4ff302221c0e88c4741aa_s50'), rdflib.URIRef(ns.bsp.asset), rdflib.Literal('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', datatype=rdflib.URIRef(ns.bsl.BinaryBlob))),
+            (rdflib.URIRef(pre_preview + '79cb8a7e6369361a4f4cb7ff729c1ed3fcf87204769623d6fbd6ebfae601e5c7_s50'), rdflib.URIRef(ns.bsp.asset), rdflib.Literal('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', datatype=rdflib.URIRef(ns.bsl.BinaryBlob))),
+            (rdflib.URIRef(pre_preview + '7a975385a110c21fcd12e238fab9501550fa02f6328749068a3bffd65e291027_s50'), rdflib.URIRef(ns.bsp.asset), rdflib.Literal('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', datatype=rdflib.URIRef(ns.bsl.BinaryBlob))),
+            (rdflib.URIRef(pre_preview + '968b9aa178585bc8d1fca0e4e32b8cf30b3941eff72f34e320584aaae8fd23ac_s50'), rdflib.URIRef(ns.bsp.asset), rdflib.Literal('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', datatype=rdflib.URIRef(ns.bsl.BinaryBlob))),
+            (rdflib.URIRef(pre_preview + '9827509a74a60dfceed11936f7f624e9c932f66c8c0d20d355d56f8c3c9b56b1_s50'), rdflib.URIRef(ns.bsp.asset), rdflib.Literal('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', datatype=rdflib.URIRef(ns.bsl.BinaryBlob))),
+            (rdflib.URIRef(pre_preview + '567049149769e1d02e6af6cfee3991f7cf0cbc935cbf6a566047f40155fb13a8_s50'), rdflib.URIRef(ns.bsp.asset), rdflib.Literal('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', datatype=rdflib.URIRef(ns.bsl.BinaryBlob))),
+            (rdflib.URIRef(pre_preview + 'df2185d8927ccef65c92fc90b94e800b02791354d8dede9dd9aa0e2c2cb1e91e_s50'), rdflib.URIRef(ns.bsp.asset), rdflib.Literal('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', datatype=rdflib.URIRef(ns.bsl.BinaryBlob))),
+            (rdflib.URIRef(pre_preview + 'a63c84e647138a2b68113474212f6aee542b3707171ff178551db3c296e59817_s50'), rdflib.URIRef(ns.bsp.asset), rdflib.Literal('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', datatype=rdflib.URIRef(ns.bsl.BinaryBlob))),
+            (rdflib.URIRef(pre_preview + 'a8b3245636074d5370283b690281abda8ffdff12ce8b1af77c8bc0a4c85be860_s50'), rdflib.URIRef(ns.bsp.asset), rdflib.Literal('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', datatype=rdflib.URIRef(ns.bsl.BinaryBlob))),
+            (rdflib.URIRef(pre_preview + 'dbfd8ebc0557c4925e9ff8411629a74a15eca934a4c2a6bd3134dd81d2f95a36_s50'), rdflib.URIRef(ns.bsp.asset), rdflib.Literal('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', datatype=rdflib.URIRef(ns.bsl.BinaryBlob))),
             }))
 
         # NOTE: we don't check ns.bsm.t_created since it depends on the execution time. Triples would look like this:
-        #   (rdflib.URIRef(prefix + '2f4109b40107cc50e0884755a1a961ed126887e49b8dbaf0e146b2e226aa6647'), rdflib.URIRef(ns.bsm.t_created), rdflib.Literal('1670..........', datatype=rdflib.XSD.integer)),
-        #   (rdflib.URIRef(prefix + '441f3d10c8ff489fe8e33e639606512f6c463151cc429de7e554b9af670c2ece'), rdflib.URIRef(ns.bsm.t_created), rdflib.Literal('1670..........', datatype=rdflib.XSD.integer)),
-        #   (rdflib.URIRef(prefix + '69b98ecf7aff3e95b09688ba93331678eb8397817111f674c9558e6dd8f5e871'), rdflib.URIRef(ns.bsm.t_created), rdflib.Literal('1670..........', datatype=rdflib.XSD.integer)),
-        #   (rdflib.URIRef(prefix + '78f7eb7f0d8221cdb2cb26c978fa42a11f75eb87becc768f4474134cb1e06926'), rdflib.URIRef(ns.bsm.t_created), rdflib.Literal('1670..........', datatype=rdflib.XSD.integer)),
-        #   (rdflib.URIRef(prefix + '80818b8ec2ee1919116dba9c8a7e0a4608313cf3b463cd88e9ed77a700dd92d3'), rdflib.URIRef(ns.bsm.t_created), rdflib.Literal('1670..........', datatype=rdflib.XSD.integer)),
-        #   (rdflib.URIRef(prefix + '976d2ea0e58488678cc7e435fbfadabfb6eb6cf50ad51862f38f73729ed11795'), rdflib.URIRef(ns.bsm.t_created), rdflib.Literal('1670..........', datatype=rdflib.XSD.integer)),
-        #   (rdflib.URIRef(prefix + '997e2fbb7494a3818ec782d2bc87bf1cffafba6b9c0f658e4a6c18a723e944d3'), rdflib.URIRef(ns.bsm.t_created), rdflib.Literal('1670..........', datatype=rdflib.XSD.integer)),
-        #   (rdflib.URIRef(prefix + 'a8af899ecdab60dfaea8ec7f934053624c80a1054539e163f2c7eaa986c2777d'), rdflib.URIRef(ns.bsm.t_created), rdflib.Literal('1670..........', datatype=rdflib.XSD.integer)),
-        #   (rdflib.URIRef(prefix + 'b8fd7fba818254166a6043195004138ebda6923e012442f819a2c49671136c70'), rdflib.URIRef(ns.bsm.t_created), rdflib.Literal('1670..........', datatype=rdflib.XSD.integer)),
-        #   (rdflib.URIRef(prefix + 'd43758ace82154a1cc10ca0dfef63cb20dd831f9c87edd6dc06539eefe67371d'), rdflib.URIRef(ns.bsm.t_created), rdflib.Literal('1670..........', datatype=rdflib.XSD.integer)),
-        #   (rdflib.URIRef(prefix + 'd803187cbf3676ae9d38126270a6152c60431589aa3bb3824baf8954e9c097f1'), rdflib.URIRef(ns.bsm.t_created), rdflib.Literal('1670..........', datatype=rdflib.XSD.integer)),
+        #   (rdflib.URIRef(pre_file + '2f4109b40107cc50e0884755a1a961ed126887e49b8dbaf0e146b2e226aa6647'), rdflib.URIRef(ns.bsm.t_created), rdflib.Literal('1670..........', datatype=rdflib.XSD.integer)),
+        #   (rdflib.URIRef(pre_file + '441f3d10c8ff489fe8e33e639606512f6c463151cc429de7e554b9af670c2ece'), rdflib.URIRef(ns.bsm.t_created), rdflib.Literal('1670..........', datatype=rdflib.XSD.integer)),
+        #   (rdflib.URIRef(pre_file + '80818b8ec2ee1919116dba9c8a7e0a4608313cf3b463cd88e9ed77a700dd92d3'), rdflib.URIRef(ns.bsm.t_created), rdflib.Literal('1670..........', datatype=rdflib.XSD.integer)),
+        #   ...
         # instead, we simply check if there's such a predicate for each file
-        self.assertSetEqual({sub for sub, _ in bsfs._backend._graph.subject_objects(rdflib.URIRef(ns.bsm.t_created))}, {
-            rdflib.URIRef(prefix + '2f4109b40107cc50e0884755a1a961ed126887e49b8dbaf0e146b2e226aa6647'),
-            rdflib.URIRef(prefix + '441f3d10c8ff489fe8e33e639606512f6c463151cc429de7e554b9af670c2ece'),
-            rdflib.URIRef(prefix + '69b98ecf7aff3e95b09688ba93331678eb8397817111f674c9558e6dd8f5e871'),
-            rdflib.URIRef(prefix + '78f7eb7f0d8221cdb2cb26c978fa42a11f75eb87becc768f4474134cb1e06926'),
-            rdflib.URIRef(prefix + '80818b8ec2ee1919116dba9c8a7e0a4608313cf3b463cd88e9ed77a700dd92d3'),
-            rdflib.URIRef(prefix + '976d2ea0e58488678cc7e435fbfadabfb6eb6cf50ad51862f38f73729ed11795'),
-            rdflib.URIRef(prefix + '997e2fbb7494a3818ec782d2bc87bf1cffafba6b9c0f658e4a6c18a723e944d3'),
-            rdflib.URIRef(prefix + 'a8af899ecdab60dfaea8ec7f934053624c80a1054539e163f2c7eaa986c2777d'),
-            rdflib.URIRef(prefix + 'b8fd7fba818254166a6043195004138ebda6923e012442f819a2c49671136c70'),
-            rdflib.URIRef(prefix + 'd43758ace82154a1cc10ca0dfef63cb20dd831f9c87edd6dc06539eefe67371d'),
-            rdflib.URIRef(prefix + 'd803187cbf3676ae9d38126270a6152c60431589aa3bb3824baf8954e9c097f1'),
+        self.assertSetEqual({sub for sub, _ in bsfs._backend._graph.subject_objects(rdflib.URIRef(ns.bsfs.Node().t_created))}, {
+            rdflib.URIRef(pre_file + '2f4109b40107cc50e0884755a1a961ed126887e49b8dbaf0e146b2e226aa6647'),
+            rdflib.URIRef(pre_file + '441f3d10c8ff489fe8e33e639606512f6c463151cc429de7e554b9af670c2ece'),
+            rdflib.URIRef(pre_file + '69b98ecf7aff3e95b09688ba93331678eb8397817111f674c9558e6dd8f5e871'),
+            rdflib.URIRef(pre_file + '78f7eb7f0d8221cdb2cb26c978fa42a11f75eb87becc768f4474134cb1e06926'),
+            rdflib.URIRef(pre_file + '80818b8ec2ee1919116dba9c8a7e0a4608313cf3b463cd88e9ed77a700dd92d3'),
+            rdflib.URIRef(pre_file + '976d2ea0e58488678cc7e435fbfadabfb6eb6cf50ad51862f38f73729ed11795'),
+            rdflib.URIRef(pre_file + '997e2fbb7494a3818ec782d2bc87bf1cffafba6b9c0f658e4a6c18a723e944d3'),
+            rdflib.URIRef(pre_file + 'a8af899ecdab60dfaea8ec7f934053624c80a1054539e163f2c7eaa986c2777d'),
+            rdflib.URIRef(pre_file + 'b8fd7fba818254166a6043195004138ebda6923e012442f819a2c49671136c70'),
+            rdflib.URIRef(pre_file + 'd43758ace82154a1cc10ca0dfef63cb20dd831f9c87edd6dc06539eefe67371d'),
+            rdflib.URIRef(pre_file + 'd803187cbf3676ae9d38126270a6152c60431589aa3bb3824baf8954e9c097f1'),
+            rdflib.URIRef(pre_file + 'accb115d266ad60c53cd01a7f7130f245886ce8eaf69bc85319febc11d9fe089'),
+            rdflib.URIRef(pre_preview + '26f16643b2570ac5b2d1f8c373d492cb724aae2dd8d71a0b63647838ed651254_s50'),
+            rdflib.URIRef(pre_preview + 'a63c84e647138a2b68113474212f6aee542b3707171ff178551db3c296e59817_s50'),
+            rdflib.URIRef(pre_preview + '9827509a74a60dfceed11936f7f624e9c932f66c8c0d20d355d56f8c3c9b56b1_s50'),
+            rdflib.URIRef(pre_preview + '2656e303d7218300326df73b64f312d8b37eb980358be27a38b5f63dae259be3_s50'),
+            rdflib.URIRef(pre_preview + '79cb8a7e6369361a4f4cb7ff729c1ed3fcf87204769623d6fbd6ebfae601e5c7_s50'),
+            rdflib.URIRef(pre_preview + 'dbfd8ebc0557c4925e9ff8411629a74a15eca934a4c2a6bd3134dd81d2f95a36_s50'),
+            rdflib.URIRef(pre_preview + '5d1235838c3d501204bb09c2de563d7e4a7fd17b7ec4ff302221c0e88c4741aa_s50'),
+            rdflib.URIRef(pre_preview + '567049149769e1d02e6af6cfee3991f7cf0cbc935cbf6a566047f40155fb13a8_s50'),
+            rdflib.URIRef(pre_preview + 'df2185d8927ccef65c92fc90b94e800b02791354d8dede9dd9aa0e2c2cb1e91e_s50'),
+            rdflib.URIRef(pre_preview + 'a8b3245636074d5370283b690281abda8ffdff12ce8b1af77c8bc0a4c85be860_s50'),
+            rdflib.URIRef(pre_preview + '7a975385a110c21fcd12e238fab9501550fa02f6328749068a3bffd65e291027_s50'),
+            rdflib.URIRef(pre_preview + '968b9aa178585bc8d1fca0e4e32b8cf30b3941eff72f34e320584aaae8fd23ac_s50'),
             })
 
     def test_print(self):
         outbuf = io.StringIO()
         with contextlib.redirect_stdout(outbuf):
             bsfs = main([
+                '--config',
+                self.config_path,
                 '--print',
                 '-r',
-                '--user', 'http://example.com/me',
+                '--host', 'http://example.com',
+                '--user', 'me',
                 os.path.join(os.path.dirname(__file__), 'testdir'),
                 os.path.join(os.path.dirname(__file__), 'testfile'),
                 ])
-        self.assertSetEqual(set(outbuf.getvalue().split('\n')) - {''}, {
-            f'Node(http://bsfs.ai/schema/File, http://example.com/me/file#2f4109b40107cc50e0884755a1a961ed126887e49b8dbaf0e146b2e226aa6647) Predicate({ns.bse.author}) Me, myself, and I',
-            f'Node(http://bsfs.ai/schema/File, http://example.com/me/file#2f4109b40107cc50e0884755a1a961ed126887e49b8dbaf0e146b2e226aa6647) Predicate({ns.bse.filename}) alpha_second',
-            f'Node(http://bsfs.ai/schema/File, http://example.com/me/file#2f4109b40107cc50e0884755a1a961ed126887e49b8dbaf0e146b2e226aa6647) Predicate({ns.bse.filesize}) 696',
-            f'Node(http://bsfs.ai/schema/File, http://example.com/me/file#441f3d10c8ff489fe8e33e639606512f6c463151cc429de7e554b9af670c2ece) Predicate({ns.bse.author}) Me, myself, and I',
-            f'Node(http://bsfs.ai/schema/File, http://example.com/me/file#441f3d10c8ff489fe8e33e639606512f6c463151cc429de7e554b9af670c2ece) Predicate({ns.bse.filename}) omega_second',
-            f'Node(http://bsfs.ai/schema/File, http://example.com/me/file#441f3d10c8ff489fe8e33e639606512f6c463151cc429de7e554b9af670c2ece) Predicate({ns.bse.filesize}) 503',
-            f'Node(http://bsfs.ai/schema/File, http://example.com/me/file#69b98ecf7aff3e95b09688ba93331678eb8397817111f674c9558e6dd8f5e871) Predicate({ns.bse.author}) Me, myself, and I',
-            f'Node(http://bsfs.ai/schema/File, http://example.com/me/file#69b98ecf7aff3e95b09688ba93331678eb8397817111f674c9558e6dd8f5e871) Predicate({ns.bse.filename}) td_first',
-            f'Node(http://bsfs.ai/schema/File, http://example.com/me/file#69b98ecf7aff3e95b09688ba93331678eb8397817111f674c9558e6dd8f5e871) Predicate({ns.bse.filesize}) 911',
-            f'Node(http://bsfs.ai/schema/File, http://example.com/me/file#78f7eb7f0d8221cdb2cb26c978fa42a11f75eb87becc768f4474134cb1e06926) Predicate({ns.bse.author}) Me, myself, and I',
-            f'Node(http://bsfs.ai/schema/File, http://example.com/me/file#78f7eb7f0d8221cdb2cb26c978fa42a11f75eb87becc768f4474134cb1e06926) Predicate({ns.bse.filename}) testfile',
-            f'Node(http://bsfs.ai/schema/File, http://example.com/me/file#78f7eb7f0d8221cdb2cb26c978fa42a11f75eb87becc768f4474134cb1e06926) Predicate({ns.bse.filesize}) 885',
-            f'Node(http://bsfs.ai/schema/File, http://example.com/me/file#80818b8ec2ee1919116dba9c8a7e0a4608313cf3b463cd88e9ed77a700dd92d3) Predicate({ns.bse.author}) Me, myself, and I',
-            f'Node(http://bsfs.ai/schema/File, http://example.com/me/file#80818b8ec2ee1919116dba9c8a7e0a4608313cf3b463cd88e9ed77a700dd92d3) Predicate({ns.bse.filename}) bar_first',
-            f'Node(http://bsfs.ai/schema/File, http://example.com/me/file#80818b8ec2ee1919116dba9c8a7e0a4608313cf3b463cd88e9ed77a700dd92d3) Predicate({ns.bse.filesize}) 956',
-            f'Node(http://bsfs.ai/schema/File, http://example.com/me/file#976d2ea0e58488678cc7e435fbfadabfb6eb6cf50ad51862f38f73729ed11795) Predicate({ns.bse.author}) Me, myself, and I',
-            f'Node(http://bsfs.ai/schema/File, http://example.com/me/file#976d2ea0e58488678cc7e435fbfadabfb6eb6cf50ad51862f38f73729ed11795) Predicate({ns.bse.filename}) omega_first',
-            f'Node(http://bsfs.ai/schema/File, http://example.com/me/file#976d2ea0e58488678cc7e435fbfadabfb6eb6cf50ad51862f38f73729ed11795) Predicate({ns.bse.filesize}) 648',
-            f'Node(http://bsfs.ai/schema/File, http://example.com/me/file#997e2fbb7494a3818ec782d2bc87bf1cffafba6b9c0f658e4a6c18a723e944d3) Predicate({ns.bse.author}) Me, myself, and I',
-            f'Node(http://bsfs.ai/schema/File, http://example.com/me/file#997e2fbb7494a3818ec782d2bc87bf1cffafba6b9c0f658e4a6c18a723e944d3) Predicate({ns.bse.filename}) alpha_first',
-            f'Node(http://bsfs.ai/schema/File, http://example.com/me/file#997e2fbb7494a3818ec782d2bc87bf1cffafba6b9c0f658e4a6c18a723e944d3) Predicate({ns.bse.filesize}) 754',
-            f'Node(http://bsfs.ai/schema/File, http://example.com/me/file#a8af899ecdab60dfaea8ec7f934053624c80a1054539e163f2c7eaa986c2777d) Predicate({ns.bse.author}) Me, myself, and I',
-            f'Node(http://bsfs.ai/schema/File, http://example.com/me/file#a8af899ecdab60dfaea8ec7f934053624c80a1054539e163f2c7eaa986c2777d) Predicate({ns.bse.filename}) foo_second',
-            f'Node(http://bsfs.ai/schema/File, http://example.com/me/file#a8af899ecdab60dfaea8ec7f934053624c80a1054539e163f2c7eaa986c2777d) Predicate({ns.bse.filesize}) 585',
-            f'Node(http://bsfs.ai/schema/File, http://example.com/me/file#b8fd7fba818254166a6043195004138ebda6923e012442f819a2c49671136c70) Predicate({ns.bse.author}) Me, myself, and I',
-            f'Node(http://bsfs.ai/schema/File, http://example.com/me/file#b8fd7fba818254166a6043195004138ebda6923e012442f819a2c49671136c70) Predicate({ns.bse.filename}) bar_second',
-            f'Node(http://bsfs.ai/schema/File, http://example.com/me/file#b8fd7fba818254166a6043195004138ebda6923e012442f819a2c49671136c70) Predicate({ns.bse.filesize}) 636',
-            f'Node(http://bsfs.ai/schema/File, http://example.com/me/file#d43758ace82154a1cc10ca0dfef63cb20dd831f9c87edd6dc06539eefe67371d) Predicate({ns.bse.author}) Me, myself, and I',
-            f'Node(http://bsfs.ai/schema/File, http://example.com/me/file#d43758ace82154a1cc10ca0dfef63cb20dd831f9c87edd6dc06539eefe67371d) Predicate({ns.bse.filename}) foo_first',
-            f'Node(http://bsfs.ai/schema/File, http://example.com/me/file#d43758ace82154a1cc10ca0dfef63cb20dd831f9c87edd6dc06539eefe67371d) Predicate({ns.bse.filesize}) 546',
-            f'Node(http://bsfs.ai/schema/File, http://example.com/me/file#d803187cbf3676ae9d38126270a6152c60431589aa3bb3824baf8954e9c097f1) Predicate({ns.bse.author}) Me, myself, and I',
-            f'Node(http://bsfs.ai/schema/File, http://example.com/me/file#d803187cbf3676ae9d38126270a6152c60431589aa3bb3824baf8954e9c097f1) Predicate({ns.bse.filename}) td_second',
-            f'Node(http://bsfs.ai/schema/File, http://example.com/me/file#d803187cbf3676ae9d38126270a6152c60431589aa3bb3824baf8954e9c097f1) Predicate({ns.bse.filesize}) 703',
-            })
+        self.assertTrue((set(outbuf.getvalue().split('\n')) - {''}).issuperset({
+            f'Node(https://schema.bsfs.io/ie/Node/Entity, http://example.com/me/file#2f4109b40107cc50e0884755a1a961ed126887e49b8dbaf0e146b2e226aa6647) Predicate({ns.bse.author}) Me, myself, and I',
+            f'Node(https://schema.bsfs.io/ie/Node/Entity, http://example.com/me/file#2f4109b40107cc50e0884755a1a961ed126887e49b8dbaf0e146b2e226aa6647) Predicate({ns.bse.filename}) alpha_second',
+            f'Node(https://schema.bsfs.io/ie/Node/Entity, http://example.com/me/file#441f3d10c8ff489fe8e33e639606512f6c463151cc429de7e554b9af670c2ece) Predicate({ns.bse.author}) Me, myself, and I',
+            f'Node(https://schema.bsfs.io/ie/Node/Entity, http://example.com/me/file#441f3d10c8ff489fe8e33e639606512f6c463151cc429de7e554b9af670c2ece) Predicate({ns.bse.filename}) omega_second',
+            f'Node(https://schema.bsfs.io/ie/Node/Entity, http://example.com/me/file#69b98ecf7aff3e95b09688ba93331678eb8397817111f674c9558e6dd8f5e871) Predicate({ns.bse.author}) Me, myself, and I',
+            f'Node(https://schema.bsfs.io/ie/Node/Entity, http://example.com/me/file#69b98ecf7aff3e95b09688ba93331678eb8397817111f674c9558e6dd8f5e871) Predicate({ns.bse.filename}) td_first',
+            f'Node(https://schema.bsfs.io/ie/Node/Entity, http://example.com/me/file#78f7eb7f0d8221cdb2cb26c978fa42a11f75eb87becc768f4474134cb1e06926) Predicate({ns.bse.author}) Me, myself, and I',
+            f'Node(https://schema.bsfs.io/ie/Node/Entity, http://example.com/me/file#78f7eb7f0d8221cdb2cb26c978fa42a11f75eb87becc768f4474134cb1e06926) Predicate({ns.bse.filename}) testfile',
+            f'Node(https://schema.bsfs.io/ie/Node/Entity, http://example.com/me/file#80818b8ec2ee1919116dba9c8a7e0a4608313cf3b463cd88e9ed77a700dd92d3) Predicate({ns.bse.author}) Me, myself, and I',
+            f'Node(https://schema.bsfs.io/ie/Node/Entity, http://example.com/me/file#80818b8ec2ee1919116dba9c8a7e0a4608313cf3b463cd88e9ed77a700dd92d3) Predicate({ns.bse.filename}) bar_first',
+            f'Node(https://schema.bsfs.io/ie/Node/Entity, http://example.com/me/file#976d2ea0e58488678cc7e435fbfadabfb6eb6cf50ad51862f38f73729ed11795) Predicate({ns.bse.author}) Me, myself, and I',
+            f'Node(https://schema.bsfs.io/ie/Node/Entity, http://example.com/me/file#976d2ea0e58488678cc7e435fbfadabfb6eb6cf50ad51862f38f73729ed11795) Predicate({ns.bse.filename}) omega_first',
+            f'Node(https://schema.bsfs.io/ie/Node/Entity, http://example.com/me/file#997e2fbb7494a3818ec782d2bc87bf1cffafba6b9c0f658e4a6c18a723e944d3) Predicate({ns.bse.author}) Me, myself, and I',
+            f'Node(https://schema.bsfs.io/ie/Node/Entity, http://example.com/me/file#997e2fbb7494a3818ec782d2bc87bf1cffafba6b9c0f658e4a6c18a723e944d3) Predicate({ns.bse.filename}) alpha_first',
+            f'Node(https://schema.bsfs.io/ie/Node/Entity, http://example.com/me/file#a8af899ecdab60dfaea8ec7f934053624c80a1054539e163f2c7eaa986c2777d) Predicate({ns.bse.author}) Me, myself, and I',
+            f'Node(https://schema.bsfs.io/ie/Node/Entity, http://example.com/me/file#a8af899ecdab60dfaea8ec7f934053624c80a1054539e163f2c7eaa986c2777d) Predicate({ns.bse.filename}) foo_second',
+            f'Node(https://schema.bsfs.io/ie/Node/Entity, http://example.com/me/file#b8fd7fba818254166a6043195004138ebda6923e012442f819a2c49671136c70) Predicate({ns.bse.author}) Me, myself, and I',
+            f'Node(https://schema.bsfs.io/ie/Node/Entity, http://example.com/me/file#b8fd7fba818254166a6043195004138ebda6923e012442f819a2c49671136c70) Predicate({ns.bse.filename}) bar_second',
+            f'Node(https://schema.bsfs.io/ie/Node/Entity, http://example.com/me/file#d43758ace82154a1cc10ca0dfef63cb20dd831f9c87edd6dc06539eefe67371d) Predicate({ns.bse.author}) Me, myself, and I',
+            f'Node(https://schema.bsfs.io/ie/Node/Entity, http://example.com/me/file#d43758ace82154a1cc10ca0dfef63cb20dd831f9c87edd6dc06539eefe67371d) Predicate({ns.bse.filename}) foo_first',
+            f'Node(https://schema.bsfs.io/ie/Node/Entity, http://example.com/me/file#d803187cbf3676ae9d38126270a6152c60431589aa3bb3824baf8954e9c097f1) Predicate({ns.bse.author}) Me, myself, and I',
+            f'Node(https://schema.bsfs.io/ie/Node/Entity, http://example.com/me/file#d803187cbf3676ae9d38126270a6152c60431589aa3bb3824baf8954e9c097f1) Predicate({ns.bse.filename}) td_second',
+            f'Node(https://schema.bsfs.io/ie/Node/Entity, http://example.com/me/file#accb115d266ad60c53cd01a7f7130f245886ce8eaf69bc85319febc11d9fe089) Predicate({ns.bse.author}) Me, myself, and I',
+            f'Node(https://schema.bsfs.io/ie/Node/Entity, http://example.com/me/file#accb115d266ad60c53cd01a7f7130f245886ce8eaf69bc85319febc11d9fe089) Predicate({ns.bse.filename}) testimage.jpg',
+            # features
+            f'Node(https://schema.bsfs.io/ie/Node/Entity, http://example.com/me/file#accb115d266ad60c53cd01a7f7130f245886ce8eaf69bc85319febc11d9fe089) Predicate(https://schema.bsfs.io/ie/Node/Entity#colors_spatial_0658f2234a054e1dd59a14462c89f7733e019160419c796356aa831498bd0a04) (91, 127, 121, 94, 138, 167, 163, 134, 190, 138, 170, 156, 121, 142, 159)',
+            # links to previews
+            f'Node(https://schema.bsfs.io/ie/Node/Entity, http://example.com/me/file#2f4109b40107cc50e0884755a1a961ed126887e49b8dbaf0e146b2e226aa6647) Predicate({ns.bse.preview}) Node(https://schema.bsfs.io/ie/Node/Preview, http://example.com/me/preview#79cb8a7e6369361a4f4cb7ff729c1ed3fcf87204769623d6fbd6ebfae601e5c7_s50)',
+            f'Node(https://schema.bsfs.io/ie/Node/Entity, http://example.com/me/file#441f3d10c8ff489fe8e33e639606512f6c463151cc429de7e554b9af670c2ece) Predicate({ns.bse.preview}) Node(https://schema.bsfs.io/ie/Node/Preview, http://example.com/me/preview#a8b3245636074d5370283b690281abda8ffdff12ce8b1af77c8bc0a4c85be860_s50)',
+            f'Node(https://schema.bsfs.io/ie/Node/Entity, http://example.com/me/file#69b98ecf7aff3e95b09688ba93331678eb8397817111f674c9558e6dd8f5e871) Predicate({ns.bse.preview}) Node(https://schema.bsfs.io/ie/Node/Preview, http://example.com/me/preview#968b9aa178585bc8d1fca0e4e32b8cf30b3941eff72f34e320584aaae8fd23ac_s50)',
+            f'Node(https://schema.bsfs.io/ie/Node/Entity, http://example.com/me/file#78f7eb7f0d8221cdb2cb26c978fa42a11f75eb87becc768f4474134cb1e06926) Predicate({ns.bse.preview}) Node(https://schema.bsfs.io/ie/Node/Preview, http://example.com/me/preview#dbfd8ebc0557c4925e9ff8411629a74a15eca934a4c2a6bd3134dd81d2f95a36_s50)',
+            f'Node(https://schema.bsfs.io/ie/Node/Entity, http://example.com/me/file#80818b8ec2ee1919116dba9c8a7e0a4608313cf3b463cd88e9ed77a700dd92d3) Predicate({ns.bse.preview}) Node(https://schema.bsfs.io/ie/Node/Preview, http://example.com/me/preview#567049149769e1d02e6af6cfee3991f7cf0cbc935cbf6a566047f40155fb13a8_s50)',
+            f'Node(https://schema.bsfs.io/ie/Node/Entity, http://example.com/me/file#976d2ea0e58488678cc7e435fbfadabfb6eb6cf50ad51862f38f73729ed11795) Predicate({ns.bse.preview}) Node(https://schema.bsfs.io/ie/Node/Preview, http://example.com/me/preview#df2185d8927ccef65c92fc90b94e800b02791354d8dede9dd9aa0e2c2cb1e91e_s50)',
+            f'Node(https://schema.bsfs.io/ie/Node/Entity, http://example.com/me/file#997e2fbb7494a3818ec782d2bc87bf1cffafba6b9c0f658e4a6c18a723e944d3) Predicate({ns.bse.preview}) Node(https://schema.bsfs.io/ie/Node/Preview, http://example.com/me/preview#9827509a74a60dfceed11936f7f624e9c932f66c8c0d20d355d56f8c3c9b56b1_s50)',
+            f'Node(https://schema.bsfs.io/ie/Node/Entity, http://example.com/me/file#a8af899ecdab60dfaea8ec7f934053624c80a1054539e163f2c7eaa986c2777d) Predicate({ns.bse.preview}) Node(https://schema.bsfs.io/ie/Node/Preview, http://example.com/me/preview#7a975385a110c21fcd12e238fab9501550fa02f6328749068a3bffd65e291027_s50)',
+            f'Node(https://schema.bsfs.io/ie/Node/Entity, http://example.com/me/file#accb115d266ad60c53cd01a7f7130f245886ce8eaf69bc85319febc11d9fe089) Predicate({ns.bse.preview}) Node(https://schema.bsfs.io/ie/Node/Preview, http://example.com/me/preview#2656e303d7218300326df73b64f312d8b37eb980358be27a38b5f63dae259be3_s50)',
+            f'Node(https://schema.bsfs.io/ie/Node/Entity, http://example.com/me/file#b8fd7fba818254166a6043195004138ebda6923e012442f819a2c49671136c70) Predicate({ns.bse.preview}) Node(https://schema.bsfs.io/ie/Node/Preview, http://example.com/me/preview#a63c84e647138a2b68113474212f6aee542b3707171ff178551db3c296e59817_s50)',
+            f'Node(https://schema.bsfs.io/ie/Node/Entity, http://example.com/me/file#d43758ace82154a1cc10ca0dfef63cb20dd831f9c87edd6dc06539eefe67371d) Predicate({ns.bse.preview}) Node(https://schema.bsfs.io/ie/Node/Preview, http://example.com/me/preview#26f16643b2570ac5b2d1f8c373d492cb724aae2dd8d71a0b63647838ed651254_s50)',
+            f'Node(https://schema.bsfs.io/ie/Node/Entity, http://example.com/me/file#d803187cbf3676ae9d38126270a6152c60431589aa3bb3824baf8954e9c097f1) Predicate({ns.bse.preview}) Node(https://schema.bsfs.io/ie/Node/Preview, http://example.com/me/preview#5d1235838c3d501204bb09c2de563d7e4a7fd17b7ec4ff302221c0e88c4741aa_s50)',
+            # preview dimensions
+            f'Node(https://schema.bsfs.io/ie/Node/Preview, http://example.com/me/preview#2656e303d7218300326df73b64f312d8b37eb980358be27a38b5f63dae259be3_s50) Predicate({ns.bsp.height}) 33',
+            f'Node(https://schema.bsfs.io/ie/Node/Preview, http://example.com/me/preview#2656e303d7218300326df73b64f312d8b37eb980358be27a38b5f63dae259be3_s50) Predicate({ns.bsp.width}) 50',
+            f'Node(https://schema.bsfs.io/ie/Node/Preview, http://example.com/me/preview#26f16643b2570ac5b2d1f8c373d492cb724aae2dd8d71a0b63647838ed651254_s50) Predicate({ns.bsp.height}) 50',
+            f'Node(https://schema.bsfs.io/ie/Node/Preview, http://example.com/me/preview#26f16643b2570ac5b2d1f8c373d492cb724aae2dd8d71a0b63647838ed651254_s50) Predicate({ns.bsp.width}) 36',
+            f'Node(https://schema.bsfs.io/ie/Node/Preview, http://example.com/me/preview#567049149769e1d02e6af6cfee3991f7cf0cbc935cbf6a566047f40155fb13a8_s50) Predicate({ns.bsp.height}) 50',
+            f'Node(https://schema.bsfs.io/ie/Node/Preview, http://example.com/me/preview#567049149769e1d02e6af6cfee3991f7cf0cbc935cbf6a566047f40155fb13a8_s50) Predicate({ns.bsp.width}) 36',
+            f'Node(https://schema.bsfs.io/ie/Node/Preview, http://example.com/me/preview#5d1235838c3d501204bb09c2de563d7e4a7fd17b7ec4ff302221c0e88c4741aa_s50) Predicate({ns.bsp.height}) 50',
+            f'Node(https://schema.bsfs.io/ie/Node/Preview, http://example.com/me/preview#5d1235838c3d501204bb09c2de563d7e4a7fd17b7ec4ff302221c0e88c4741aa_s50) Predicate({ns.bsp.width}) 36',
+            f'Node(https://schema.bsfs.io/ie/Node/Preview, http://example.com/me/preview#79cb8a7e6369361a4f4cb7ff729c1ed3fcf87204769623d6fbd6ebfae601e5c7_s50) Predicate({ns.bsp.height}) 50',
+            f'Node(https://schema.bsfs.io/ie/Node/Preview, http://example.com/me/preview#79cb8a7e6369361a4f4cb7ff729c1ed3fcf87204769623d6fbd6ebfae601e5c7_s50) Predicate({ns.bsp.width}) 36',
+            f'Node(https://schema.bsfs.io/ie/Node/Preview, http://example.com/me/preview#7a975385a110c21fcd12e238fab9501550fa02f6328749068a3bffd65e291027_s50) Predicate({ns.bsp.height}) 50',
+            f'Node(https://schema.bsfs.io/ie/Node/Preview, http://example.com/me/preview#7a975385a110c21fcd12e238fab9501550fa02f6328749068a3bffd65e291027_s50) Predicate({ns.bsp.width}) 36',
+            f'Node(https://schema.bsfs.io/ie/Node/Preview, http://example.com/me/preview#968b9aa178585bc8d1fca0e4e32b8cf30b3941eff72f34e320584aaae8fd23ac_s50) Predicate({ns.bsp.height}) 50',
+            f'Node(https://schema.bsfs.io/ie/Node/Preview, http://example.com/me/preview#968b9aa178585bc8d1fca0e4e32b8cf30b3941eff72f34e320584aaae8fd23ac_s50) Predicate({ns.bsp.width}) 36',
+            f'Node(https://schema.bsfs.io/ie/Node/Preview, http://example.com/me/preview#9827509a74a60dfceed11936f7f624e9c932f66c8c0d20d355d56f8c3c9b56b1_s50) Predicate({ns.bsp.height}) 50',
+            f'Node(https://schema.bsfs.io/ie/Node/Preview, http://example.com/me/preview#9827509a74a60dfceed11936f7f624e9c932f66c8c0d20d355d56f8c3c9b56b1_s50) Predicate({ns.bsp.width}) 36',
+            f'Node(https://schema.bsfs.io/ie/Node/Preview, http://example.com/me/preview#a63c84e647138a2b68113474212f6aee542b3707171ff178551db3c296e59817_s50) Predicate({ns.bsp.height}) 50',
+            f'Node(https://schema.bsfs.io/ie/Node/Preview, http://example.com/me/preview#a63c84e647138a2b68113474212f6aee542b3707171ff178551db3c296e59817_s50) Predicate({ns.bsp.width}) 36',
+            f'Node(https://schema.bsfs.io/ie/Node/Preview, http://example.com/me/preview#a8b3245636074d5370283b690281abda8ffdff12ce8b1af77c8bc0a4c85be860_s50) Predicate({ns.bsp.height}) 50',
+            f'Node(https://schema.bsfs.io/ie/Node/Preview, http://example.com/me/preview#a8b3245636074d5370283b690281abda8ffdff12ce8b1af77c8bc0a4c85be860_s50) Predicate({ns.bsp.width}) 36',
+            f'Node(https://schema.bsfs.io/ie/Node/Preview, http://example.com/me/preview#dbfd8ebc0557c4925e9ff8411629a74a15eca934a4c2a6bd3134dd81d2f95a36_s50) Predicate({ns.bsp.height}) 50',
+            f'Node(https://schema.bsfs.io/ie/Node/Preview, http://example.com/me/preview#dbfd8ebc0557c4925e9ff8411629a74a15eca934a4c2a6bd3134dd81d2f95a36_s50) Predicate({ns.bsp.width}) 36',
+            f'Node(https://schema.bsfs.io/ie/Node/Preview, http://example.com/me/preview#df2185d8927ccef65c92fc90b94e800b02791354d8dede9dd9aa0e2c2cb1e91e_s50) Predicate({ns.bsp.height}) 50',
+            f'Node(https://schema.bsfs.io/ie/Node/Preview, http://example.com/me/preview#df2185d8927ccef65c92fc90b94e800b02791354d8dede9dd9aa0e2c2cb1e91e_s50) Predicate({ns.bsp.width}) 36',
+            # assets
+            # ... (not checked)
+            }))
 
 
 ## main ##
diff --git a/test/apps/test_info.py b/test/apps/test_info.py
index 6f4d98f..ffcaecf 100644
--- a/test/apps/test_info.py
+++ b/test/apps/test_info.py
@@ -1,15 +1,18 @@
-"""
 
-Part of the bsie test suite.
-A copy of the license is provided with the project.
-Author: Matthias Baumgartner, 2022
-"""
-# imports
+# standard imports
 import argparse
 import contextlib
 import io
+import os
+import tempfile
 import unittest
 
+# external imports
+import yaml
+
+# bsie imports
+from bsie.utils import bsfs
+
 # objects to test
 from bsie.apps.info import main
 
@@ -17,17 +20,72 @@ from bsie.apps.info import main
 ## code ##
 
 class TestIndex(unittest.TestCase):
+    def setUp(self):
+        config = {
+            'ReaderBuilder': {},
+            'ExtractorBuilder': [
+                {'bsie.extractor.preview.Preview': {
+                    'max_sides': [50],
+                    }},
+                {'bsie.extractor.generic.path.Path': {}},
+                {'bsie.extractor.generic.constant.Constant': {
+                    'schema': '''
+                        bse:author rdfs:subClassOf bsfs:Predicate ;
+                            rdfs:domain bsn:Entity ;
+                            rdfs:range xsd:string ;
+                            bsfs:unique "true"^^xsd:boolean .
+                        ''',
+                    'tuples': [['https://schema.bsfs.io/ie/Node/Entity#author', 'Me, myself, and I']],
+                  }},
+                {'bsie.extractor.image.colors_spatial.ColorsSpatial': {
+                    'width': 2,
+                    'height': 2,
+                    'exp': 2,
+                    }},
+                ]
+            }
+        # create config file
+        _, self.config_path = tempfile.mkstemp(prefix='bsie-test-', suffix='.yaml')
+        with open(self.config_path, 'wt') as cfile:
+            yaml.dump(config, cfile)
+
+    def tearDown(self):
+        if os.path.exists(self.config_path):
+            os.unlink(self.config_path)
+
     def test_predicates(self):
         outbuf = io.StringIO()
         with contextlib.redirect_stdout(outbuf):
             # show predicates infos
-            main(['predicates'])
+            main(['--config', self.config_path, 'predicates'])
         # verify output
         self.assertSetEqual({pred for pred in outbuf.getvalue().split('\n') if pred != ''}, {
-            'http://bsfs.ai/schema/Entity#author',
-            'http://bsfs.ai/schema/Predicate',
-            'http://bsfs.ai/schema/Entity#filename',
-            'http://bsfs.ai/schema/Entity#filesize',
+            'https://schema.bsfs.io/ie/Node/Entity#author',
+            'https://schema.bsfs.io/core/Predicate',
+            'https://schema.bsfs.io/ie/Node/Entity#filename',
+            'https://schema.bsfs.io/ie/Node/Entity#colors_spatial_0658f2234a054e1dd59a14462c89f7733e019160419c796356aa831498bd0a04',
+            'https://schema.bsfs.io/ie/Node/Entity#preview',
+            'https://schema.bsfs.io/ie/Node/Preview#width',
+            'https://schema.bsfs.io/ie/Node/Preview#height',
+            'https://schema.bsfs.io/ie/Node/Preview#asset',
+            })
+
+    def test_schema(self):
+        outbuf = io.StringIO()
+        with contextlib.redirect_stdout(outbuf):
+            # show schema infos
+            main(['--config', self.config_path, 'schema'])
+        # verify output
+        schema = bsfs.schema.from_string(outbuf.getvalue())
+        self.assertSetEqual({pred.uri for pred in schema.predicates()}, {
+            'https://schema.bsfs.io/ie/Node/Entity#author',
+            'https://schema.bsfs.io/core/Predicate',
+            'https://schema.bsfs.io/ie/Node/Entity#filename',
+            'https://schema.bsfs.io/ie/Node/Entity#colors_spatial_0658f2234a054e1dd59a14462c89f7733e019160419c796356aa831498bd0a04',
+            'https://schema.bsfs.io/ie/Node/Entity#preview',
+            'https://schema.bsfs.io/ie/Node/Preview#width',
+            'https://schema.bsfs.io/ie/Node/Preview#height',
+            'https://schema.bsfs.io/ie/Node/Preview#asset',
             })
 
     def test_invalid(self):
diff --git a/test/apps/test_loader.py b/test/apps/test_loader.py
new file mode 100644
index 0000000..4670266
--- /dev/null
+++ b/test/apps/test_loader.py
@@ -0,0 +1,83 @@
+
+# standard imports
+import os
+import tempfile
+import unittest
+
+# external imports
+import yaml
+
+# objects to test
+from bsie.apps._loader import load_pipeline
+
+
+## code ##
+
+class TestLoader(unittest.TestCase):
+    def test_load_pipeline(self):
+        # config file can be empty
+        config = {
+            'ReaderBuilder': {},
+            'ExtractorBuilder': []
+            }
+        # create config file
+        _, path = tempfile.mkstemp(prefix='bsie-test-', suffix='.yaml')
+        with open(path, 'wt') as cfile:
+            yaml.dump(config, cfile)
+        # pipeline contains only default predicates
+        pipeline = load_pipeline(path)
+        self.assertSetEqual({pred.uri for pred in pipeline.schema.predicates()}, {
+            'https://schema.bsfs.io/core/Predicate',
+            })
+
+        # pipeline is built according to configured extractors
+        config = {
+            'ReaderBuilder': {},
+            'ExtractorBuilder': [
+                {'bsie.extractor.preview.Preview': {
+                    'max_sides': [50],
+                    }},
+                {'bsie.extractor.generic.path.Path': {}},
+                {'bsie.extractor.generic.constant.Constant': {
+                    'schema': '''
+                        bse:author rdfs:subClassOf bsfs:Predicate ;
+                            rdfs:domain bsn:Entity ;
+                            rdfs:range xsd:string ;
+                            bsfs:unique "true"^^xsd:boolean .
+                        ''',
+                    'tuples': [['https://schema.bsfs.io/ie/Node/Entity#author', 'Me, myself, and I']],
+                  }},
+                {'bsie.extractor.image.colors_spatial.ColorsSpatial': {
+                    'width': 2,
+                    'height': 2,
+                    'exp': 2,
+                    }},
+                ]
+            }
+        # create config file
+        _, path = tempfile.mkstemp(prefix='bsie-test-', suffix='.yaml')
+        with open(path, 'wt') as cfile:
+            yaml.dump(config, cfile)
+        # pipeline contains all defined predicates
+        pipeline = load_pipeline(path)
+        self.assertSetEqual({pred.uri for pred in pipeline.schema.predicates()}, {
+            'https://schema.bsfs.io/ie/Node/Entity#author',
+            'https://schema.bsfs.io/core/Predicate',
+            'https://schema.bsfs.io/ie/Node/Entity#filename',
+            'https://schema.bsfs.io/ie/Node/Entity#colors_spatial_0658f2234a054e1dd59a14462c89f7733e019160419c796356aa831498bd0a04',
+            'https://schema.bsfs.io/ie/Node/Entity#preview',
+            'https://schema.bsfs.io/ie/Node/Preview#width',
+            'https://schema.bsfs.io/ie/Node/Preview#height',
+            'https://schema.bsfs.io/ie/Node/Preview#asset',
+            })
+
+        # config file must exist
+        self.assertRaises(OSError, load_pipeline, 'invalid.yaml')
+
+
+## main ##
+
+if __name__ == '__main__':
+    unittest.main()
+
+## EOF ##
diff --git a/test/apps/test_main.py b/test/apps/test_main.py
new file mode 100644
index 0000000..4fa094b
--- /dev/null
+++ b/test/apps/test_main.py
@@ -0,0 +1,57 @@
+
+# standard imports
+import contextlib
+import io
+import json
+import os
+import tempfile
+import unittest
+import yaml
+
+# objects to test
+from bsie.apps import main
+
+
+## code ##
+
+class TestMain(unittest.TestCase):
+    def setUp(self):
+        config = {
+            'ReaderBuilder': {},
+            'ExtractorBuilder': [
+                {'bsie.extractor.generic.stat.Stat': {}},
+                {'bsie.extractor.generic.path.Path': {}},
+                ]
+            }
+        # create config file
+        _, self.config_path = tempfile.mkstemp(prefix='bsie-test-', suffix='.yaml')
+        with open(self.config_path, 'wt') as cfile:
+            yaml.dump(config, cfile)
+
+    def tearDown(self):
+        if os.path.exists(self.config_path):
+            os.unlink(self.config_path)
+
+    def test_main(self):
+        # must at least pass an app
+        with contextlib.redirect_stderr(io.StringIO()):
+            self.assertRaises(SystemExit, main, [])
+        # app takes over
+        with contextlib.redirect_stderr(io.StringIO()):
+            self.assertRaises(SystemExit, main, ['info'])
+        outbuf = io.StringIO()
+        with contextlib.redirect_stdout(outbuf):
+            main(['info', '--config', self.config_path, 'predicates'])
+        self.assertEqual(set(outbuf.getvalue().strip().split('\n')), {
+            'https://schema.bsfs.io/ie/Node/Entity#filename',
+            'https://schema.bsfs.io/ie/Node/Entity#filesize',
+            'https://schema.bsfs.io/core/Predicate',
+            })
+
+
+## main ##
+
+if __name__ == '__main__':
+    unittest.main()
+
+## EOF ##
diff --git a/test/apps/testdir/testimage.jpg b/test/apps/testdir/testimage.jpg
new file mode 100644
index 0000000..c80bb48
--- /dev/null
+++ b/test/apps/testdir/testimage.jpg