bsie extraction and info apps

19 files changed, 607 insertions, 5 deletions

diff --git a/test/apps/__init__.py b/test/apps/__init__.py
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/test/apps/__init__.py
diff --git a/test/apps/test_index.py b/test/apps/test_index.py
new file mode 100644
index 0000000..6d47df8
--- /dev/null
+++ b/test/apps/test_index.py
@@ -0,0 +1,159 @@
+"""
+
+Part of the bsie test suite.
+A copy of the license is provided with the project.
+Author: Matthias Baumgartner, 2022
+"""
+# imports
+import io
+import os
+import rdflib
+import sys
+import unittest
+
+# bsie imports
+from bsie.utils import ns
+
+# objects to test
+from bsie.apps.index import main
+
+
+## code ##
+
+class TestIndex(unittest.TestCase):
+    def test_main(self):
+        bsfs = main([
+            '-r',
+            '--user', 'http://example.com/me',
+            os.path.join(os.path.dirname(__file__), 'testdir'),
+            os.path.join(os.path.dirname(__file__), 'testfile'),
+            ])
+
+        prefix = 'http://example.com/me/file#'
+        self.assertTrue(set(bsfs._Graph__backend.graph).issuperset({
+            (rdflib.URIRef(prefix + '2f4109b40107cc50e0884755a1a961ed126887e49b8dbaf0e146b2e226aa6647'), rdflib.RDF.type, rdflib.URIRef(ns.bsfs.Entity)),
+            (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.Entity)),
+            (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.Entity)),
+            (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.Entity)),
+            (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.Entity)),
+            (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.Entity)),
+            (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.Entity)),
+            (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.Entity)),
+            (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.Entity)),
+            (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.Entity)),
+            (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.Entity)),
+            (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)),
+            }))
+
+        # 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)),
+        # instead, we simply check if there's such a predicate for each file
+        self.assertSetEqual({sub for sub, _ in bsfs._Graph__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'),
+            })
+
+    def test_print(self):
+        stdout, sys.stdout = sys.stdout, io.StringIO()
+        bsfs = main([
+            '--print',
+            '-r',
+            '--user', 'http://example.com/me',
+            os.path.join(os.path.dirname(__file__), 'testdir'),
+            os.path.join(os.path.dirname(__file__), 'testfile'),
+            ])
+        outbuf, sys.stdout = sys.stdout, stdout
+        self.assertSetEqual(set(outbuf.getvalue().split('\n')) - {''}, {
+            f'Node(http://bsfs.ai/schema/Entity, http://example.com/me/file#2f4109b40107cc50e0884755a1a961ed126887e49b8dbaf0e146b2e226aa6647) Predicate({ns.bse.author}) Me, myself, and I',
+            f'Node(http://bsfs.ai/schema/Entity, http://example.com/me/file#2f4109b40107cc50e0884755a1a961ed126887e49b8dbaf0e146b2e226aa6647) Predicate({ns.bse.filename}) alpha_second',
+            f'Node(http://bsfs.ai/schema/Entity, http://example.com/me/file#2f4109b40107cc50e0884755a1a961ed126887e49b8dbaf0e146b2e226aa6647) Predicate({ns.bse.filesize}) 696',
+            f'Node(http://bsfs.ai/schema/Entity, http://example.com/me/file#441f3d10c8ff489fe8e33e639606512f6c463151cc429de7e554b9af670c2ece) Predicate({ns.bse.author}) Me, myself, and I',
+            f'Node(http://bsfs.ai/schema/Entity, http://example.com/me/file#441f3d10c8ff489fe8e33e639606512f6c463151cc429de7e554b9af670c2ece) Predicate({ns.bse.filename}) omega_second',
+            f'Node(http://bsfs.ai/schema/Entity, http://example.com/me/file#441f3d10c8ff489fe8e33e639606512f6c463151cc429de7e554b9af670c2ece) Predicate({ns.bse.filesize}) 503',
+            f'Node(http://bsfs.ai/schema/Entity, http://example.com/me/file#69b98ecf7aff3e95b09688ba93331678eb8397817111f674c9558e6dd8f5e871) Predicate({ns.bse.author}) Me, myself, and I',
+            f'Node(http://bsfs.ai/schema/Entity, http://example.com/me/file#69b98ecf7aff3e95b09688ba93331678eb8397817111f674c9558e6dd8f5e871) Predicate({ns.bse.filename}) td_first',
+            f'Node(http://bsfs.ai/schema/Entity, http://example.com/me/file#69b98ecf7aff3e95b09688ba93331678eb8397817111f674c9558e6dd8f5e871) Predicate({ns.bse.filesize}) 911',
+            f'Node(http://bsfs.ai/schema/Entity, http://example.com/me/file#78f7eb7f0d8221cdb2cb26c978fa42a11f75eb87becc768f4474134cb1e06926) Predicate({ns.bse.author}) Me, myself, and I',
+            f'Node(http://bsfs.ai/schema/Entity, http://example.com/me/file#78f7eb7f0d8221cdb2cb26c978fa42a11f75eb87becc768f4474134cb1e06926) Predicate({ns.bse.filename}) testfile',
+            f'Node(http://bsfs.ai/schema/Entity, http://example.com/me/file#78f7eb7f0d8221cdb2cb26c978fa42a11f75eb87becc768f4474134cb1e06926) Predicate({ns.bse.filesize}) 885',
+            f'Node(http://bsfs.ai/schema/Entity, http://example.com/me/file#80818b8ec2ee1919116dba9c8a7e0a4608313cf3b463cd88e9ed77a700dd92d3) Predicate({ns.bse.author}) Me, myself, and I',
+            f'Node(http://bsfs.ai/schema/Entity, http://example.com/me/file#80818b8ec2ee1919116dba9c8a7e0a4608313cf3b463cd88e9ed77a700dd92d3) Predicate({ns.bse.filename}) bar_first',
+            f'Node(http://bsfs.ai/schema/Entity, http://example.com/me/file#80818b8ec2ee1919116dba9c8a7e0a4608313cf3b463cd88e9ed77a700dd92d3) Predicate({ns.bse.filesize}) 956',
+            f'Node(http://bsfs.ai/schema/Entity, http://example.com/me/file#976d2ea0e58488678cc7e435fbfadabfb6eb6cf50ad51862f38f73729ed11795) Predicate({ns.bse.author}) Me, myself, and I',
+            f'Node(http://bsfs.ai/schema/Entity, http://example.com/me/file#976d2ea0e58488678cc7e435fbfadabfb6eb6cf50ad51862f38f73729ed11795) Predicate({ns.bse.filename}) omega_first',
+            f'Node(http://bsfs.ai/schema/Entity, http://example.com/me/file#976d2ea0e58488678cc7e435fbfadabfb6eb6cf50ad51862f38f73729ed11795) Predicate({ns.bse.filesize}) 648',
+            f'Node(http://bsfs.ai/schema/Entity, http://example.com/me/file#997e2fbb7494a3818ec782d2bc87bf1cffafba6b9c0f658e4a6c18a723e944d3) Predicate({ns.bse.author}) Me, myself, and I',
+            f'Node(http://bsfs.ai/schema/Entity, http://example.com/me/file#997e2fbb7494a3818ec782d2bc87bf1cffafba6b9c0f658e4a6c18a723e944d3) Predicate({ns.bse.filename}) alpha_first',
+            f'Node(http://bsfs.ai/schema/Entity, http://example.com/me/file#997e2fbb7494a3818ec782d2bc87bf1cffafba6b9c0f658e4a6c18a723e944d3) Predicate({ns.bse.filesize}) 754',
+            f'Node(http://bsfs.ai/schema/Entity, http://example.com/me/file#a8af899ecdab60dfaea8ec7f934053624c80a1054539e163f2c7eaa986c2777d) Predicate({ns.bse.author}) Me, myself, and I',
+            f'Node(http://bsfs.ai/schema/Entity, http://example.com/me/file#a8af899ecdab60dfaea8ec7f934053624c80a1054539e163f2c7eaa986c2777d) Predicate({ns.bse.filename}) foo_second',
+            f'Node(http://bsfs.ai/schema/Entity, http://example.com/me/file#a8af899ecdab60dfaea8ec7f934053624c80a1054539e163f2c7eaa986c2777d) Predicate({ns.bse.filesize}) 585',
+            f'Node(http://bsfs.ai/schema/Entity, http://example.com/me/file#b8fd7fba818254166a6043195004138ebda6923e012442f819a2c49671136c70) Predicate({ns.bse.author}) Me, myself, and I',
+            f'Node(http://bsfs.ai/schema/Entity, http://example.com/me/file#b8fd7fba818254166a6043195004138ebda6923e012442f819a2c49671136c70) Predicate({ns.bse.filename}) bar_second',
+            f'Node(http://bsfs.ai/schema/Entity, http://example.com/me/file#b8fd7fba818254166a6043195004138ebda6923e012442f819a2c49671136c70) Predicate({ns.bse.filesize}) 636',
+            f'Node(http://bsfs.ai/schema/Entity, http://example.com/me/file#d43758ace82154a1cc10ca0dfef63cb20dd831f9c87edd6dc06539eefe67371d) Predicate({ns.bse.author}) Me, myself, and I',
+            f'Node(http://bsfs.ai/schema/Entity, http://example.com/me/file#d43758ace82154a1cc10ca0dfef63cb20dd831f9c87edd6dc06539eefe67371d) Predicate({ns.bse.filename}) foo_first',
+            f'Node(http://bsfs.ai/schema/Entity, http://example.com/me/file#d43758ace82154a1cc10ca0dfef63cb20dd831f9c87edd6dc06539eefe67371d) Predicate({ns.bse.filesize}) 546',
+            f'Node(http://bsfs.ai/schema/Entity, http://example.com/me/file#d803187cbf3676ae9d38126270a6152c60431589aa3bb3824baf8954e9c097f1) Predicate({ns.bse.author}) Me, myself, and I',
+            f'Node(http://bsfs.ai/schema/Entity, http://example.com/me/file#d803187cbf3676ae9d38126270a6152c60431589aa3bb3824baf8954e9c097f1) Predicate({ns.bse.filename}) td_second',
+            f'Node(http://bsfs.ai/schema/Entity, http://example.com/me/file#d803187cbf3676ae9d38126270a6152c60431589aa3bb3824baf8954e9c097f1) Predicate({ns.bse.filesize}) 703',
+            })
+
+
+## main ##
+
+if __name__ == '__main__':
+    unittest.main()
+
+## EOF ##
diff --git a/test/apps/test_info.py b/test/apps/test_info.py
new file mode 100644
index 0000000..60a540e
--- /dev/null
+++ b/test/apps/test_info.py
@@ -0,0 +1,42 @@
+"""
+
+Part of the bsie test suite.
+A copy of the license is provided with the project.
+Author: Matthias Baumgartner, 2022
+"""
+# imports
+import argparse
+import io
+import os
+import sys
+import unittest
+
+# objects to test
+from bsie.apps.info import main
+
+
+## code ##
+
+class TestIndex(unittest.TestCase):
+    def test_predicates(self):
+        stdout, sys.stdout = sys.stdout, io.StringIO()
+        # show predicates infos
+        main(['predicates'])
+        outbuf, sys.stdout = sys.stdout, stdout
+        # 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',
+            })
+
+    def test_invalid(self):
+        self.assertRaises(SystemExit, main, ['foobar'])
+
+## main ##
+
+if __name__ == '__main__':
+    unittest.main()
+
+## EOF ##
diff --git a/test/apps/testdir/alpha/alpha_first b/test/apps/testdir/alpha/alpha_first
new file mode 100644
index 0000000..f96fdee
--- /dev/null
+++ b/test/apps/testdir/alpha/alpha_first
@@ -0,0 +1,16 @@
+Turpis tincidunt id aliquet risus feugiat in ante metus.
+Vel turpis nunc eget lorem dolor.
+Lorem mollis aliquam ut porttitor leo a diam sollicitudin.
+Sit amet mattis vulputate enim nulla aliquet porttitor lacus luctus.
+Vitae et leo duis ut diam.
+Integer eget aliquet nibh praesent tristique magna sit.
+Volutpat sed cras ornare arcu dui.
+Consectetur adipiscing elit duis tristique sollicitudin nibh.
+Interdum varius sit amet mattis vulputate.
+A arcu cursus vitae congue.
+Risus nec feugiat in fermentum posuere urna nec tincidunt praesent.
+Sit amet dictum sit amet justo donec enim diam.
+Maecenas accumsan lacus vel facilisis.
+Erat velit scelerisque in dictum non consectetur a.
+Tempor orci dapibus ultrices in iaculis nunc.
+Nisi lacus sed viverra tellus.
diff --git a/test/apps/testdir/alpha/alpha_second b/test/apps/testdir/alpha/alpha_second
new file mode 100644
index 0000000..ae83ce8
--- /dev/null
+++ b/test/apps/testdir/alpha/alpha_second
@@ -0,0 +1,12 @@
+Et sollicitudin ac orci phasellus egestas tellus rutrum tellus.
+Orci dapibus ultrices in iaculis nunc sed augue.
+Tincidunt vitae semper quis lectus nulla at.
+Maecenas ultricies mi eget mauris pharetra et.
+Porttitor massa id neque aliquam vestibulum morbi blandit.
+Et magnis dis parturient montes nascetur ridiculus mus mauris.
+Ac orci phasellus egestas tellus rutrum tellus pellentesque.
+Donec ac odio tempor orci dapibus.
+Quis imperdiet massa tincidunt nunc pulvinar sapien et ligula.
+Potenti nullam ac tortor vitae purus faucibus ornare suspendisse sed.
+Orci porta non pulvinar neque laoreet suspendisse interdum consectetur.
+Mauris pellentesque pulvinar pellentesque habitant morbi tristique.
diff --git a/test/apps/testdir/alpha/omega/omega_first b/test/apps/testdir/alpha/omega/omega_first
new file mode 100644
index 0000000..e594737
--- /dev/null
+++ b/test/apps/testdir/alpha/omega/omega_first
@@ -0,0 +1,14 @@
+Neque gravida in fermentum et sollicitudin.
+Sodales ut eu sem integer vitae justo eget magna fermentum.
+Amet nulla facilisi morbi tempus iaculis.
+Proin sagittis nisl rhoncus mattis rhoncus urna neque.
+Aliquam sem fringilla ut morbi tincidunt augue interdum velit euismod.
+Sagittis eu volutpat odio facilisis.
+Aliquet porttitor lacus luctus accumsan tortor posuere ac ut.
+Sed arcu non odio euismod lacinia.
+Faucibus et molestie ac feugiat.
+Urna neque viverra justo nec ultrices dui sapien eget.
+Amet commodo nulla facilisi nullam.
+Pretium lectus quam id leo in vitae.
+A cras semper auctor neque.
+Sed arcu non odio euismod lacinia at quis risus sed.
diff --git a/test/apps/testdir/alpha/omega/omega_second b/test/apps/testdir/alpha/omega/omega_second
new file mode 100644
index 0000000..0c9857d
--- /dev/null
+++ b/test/apps/testdir/alpha/omega/omega_second
@@ -0,0 +1,10 @@
+Commodo sed egestas egestas fringilla phasellus.
+Ac tortor dignissim convallis aenean et tortor at risus.
+Lorem dolor sed viverra ipsum nunc aliquet bibendum enim.
+Quis lectus nulla at volutpat diam ut.
+Tincidunt id aliquet risus feugiat in ante metus.
+Tincidunt arcu non sodales neque.
+Amet est placerat in egestas erat imperdiet sed euismod.
+Duis tristique sollicitudin nibh sit amet.
+Sed arcu non odio euismod lacinia at.
+Ullamcorper morbi tincidunt ornare massa eget egestas purus viverra accumsan.
diff --git a/test/apps/testdir/foo/bar/bar_first b/test/apps/testdir/foo/bar/bar_first
new file mode 100644
index 0000000..e9edb3f
--- /dev/null
+++ b/test/apps/testdir/foo/bar/bar_first
@@ -0,0 +1,20 @@
+Elementum eu facilisis sed odio morbi quis commodo.
+Enim nunc faucibus a pellentesque sit amet porttitor.
+Etiam non quam lacus suspendisse faucibus interdum.
+Viverra aliquet eget sit amet tellus.
+Arcu vitae elementum curabitur vitae.
+Feugiat vivamus at augue eget arcu dictum.
+Commodo quis imperdiet massa tincidunt nunc.
+Urna duis convallis convallis tellus id interdum.
+Commodo sed egestas egestas fringilla phasellus.
+Sodales neque sodales ut etiam sit amet nisl.
+Sem integer vitae justo eget magna fermentum iaculis.
+Id diam maecenas ultricies mi.
+Aliquet nibh praesent tristique magna sit amet purus gravida.
+Ut enim blandit volutpat maecenas volutpat.
+Ipsum a arcu cursus vitae congue mauris.
+Donec ultrices tincidunt arcu non.
+Nulla posuere sollicitudin aliquam ultrices sagittis orci a scelerisque purus.
+Egestas maecenas pharetra convallis posuere.
+Feugiat in fermentum posuere urna nec.
+Nulla malesuada pellentesque elit eget gravida cum sociis.
diff --git a/test/apps/testdir/foo/bar/bar_second b/test/apps/testdir/foo/bar/bar_second
new file mode 100644
index 0000000..fb95896
--- /dev/null
+++ b/test/apps/testdir/foo/bar/bar_second
@@ -0,0 +1,14 @@
+Augue ut lectus arcu bibendum at varius vel pharetra vel.
+Mattis aliquam faucibus purus in.
+In tellus integer feugiat scelerisque.
+Eget velit aliquet sagittis id consectetur purus ut faucibus pulvinar.
+Augue mauris augue neque gravida.
+Pulvinar neque laoreet suspendisse interdum consectetur libero id faucibus.
+Tellus elementum sagittis vitae et leo duis.
+Eget est lorem ipsum dolor sit amet consectetur.
+Volutpat sed cras ornare arcu.
+Faucibus a pellentesque sit amet.
+Turpis egestas maecenas pharetra convallis.
+Faucibus interdum posuere lorem ipsum dolor sit amet.
+Id semper risus in hendrerit.
+Amet volutpat consequat mauris nunc.
diff --git a/test/apps/testdir/foo/foo_first b/test/apps/testdir/foo/foo_first
new file mode 100644
index 0000000..ed1e052
--- /dev/null
+++ b/test/apps/testdir/foo/foo_first
@@ -0,0 +1,11 @@
+Venenatis tellus in metus vulputate eu scelerisque felis imperdiet proin.
+Orci phasellus egestas tellus rutrum.
+Feugiat vivamus at augue eget arcu dictum varius.
+Justo eget magna fermentum iaculis eu non.
+A erat nam at lectus urna duis.
+Quam quisque id diam vel quam elementum pulvinar etiam.
+Amet commodo nulla facilisi nullam vehicula ipsum a.
+Sapien faucibus et molestie ac feugiat.
+Aliquam vestibulum morbi blandit cursus risus at ultrices.
+Purus faucibus ornare suspendisse sed nisi.
+In massa tempor nec feugiat nisl pretium fusce id velit.
diff --git a/test/apps/testdir/foo/foo_second b/test/apps/testdir/foo/foo_second
new file mode 100644
index 0000000..95e46ae
--- /dev/null
+++ b/test/apps/testdir/foo/foo_second
@@ -0,0 +1,12 @@
+Sit amet consectetur adipiscing elit ut aliquam purus.
+Vulputate dignissim suspendisse in est ante in nibh.
+Eu feugiat pretium nibh ipsum consequat nisl vel pretium.
+Egestas purus viverra accumsan in nisl.
+Ac odio tempor orci dapibus ultrices.
+At imperdiet dui accumsan sit amet.
+Elementum integer enim neque volutpat ac tincidunt vitae semper.
+Mi in nulla posuere sollicitudin aliquam ultrices sagittis.
+Aliquam sem et tortor consequat.
+Tristique senectus et netus et malesuada fames ac turpis.
+Quis hendrerit dolor magna eget est lorem ipsum.
+Ut consequat semper viverra nam libero.
diff --git a/test/apps/testdir/td_first b/test/apps/testdir/td_first
new file mode 100644
index 0000000..21eab9c
--- /dev/null
+++ b/test/apps/testdir/td_first
@@ -0,0 +1,18 @@
+Urna duis convallis convallis tellus id interdum velit.
+Risus in hendrerit gravida rutrum.
+Odio pellentesque diam volutpat commodo sed.
+Duis convallis convallis tellus id interdum velit laoreet id donec.
+Duis at tellus at urna.
+Egestas maecenas pharetra convallis posuere morbi leo urna molestie at.
+Et leo duis ut diam quam nulla porttitor massa id.
+Nunc eget lorem dolor sed viverra ipsum nunc aliquet bibendum.
+Sodales ut etiam sit amet nisl purus in.
+Ac felis donec et odio pellentesque diam volutpat commodo.
+Nunc mi ipsum faucibus vitae aliquet.
+Volutpat ac tincidunt vitae semper quis lectus nulla at volutpat.
+Mollis aliquam ut porttitor leo.
+Vestibulum rhoncus est pellentesque elit ullamcorper dignissim cras.
+Pulvinar proin gravida hendrerit lectus a.
+Ultrices dui sapien eget mi proin.
+Dui vivamus arcu felis bibendum ut.
+Aliquam eleifend mi in nulla posuere sollicitudin aliquam ultrices sagittis.
diff --git a/test/apps/testdir/td_second b/test/apps/testdir/td_second
new file mode 100644
index 0000000..496ff0e
--- /dev/null
+++ b/test/apps/testdir/td_second
@@ -0,0 +1,14 @@
+Egestas purus viverra accumsan in.
+Auctor urna nunc id cursus metus aliquam eleifend.
+Morbi tincidunt augue interdum velit.
+In egestas erat imperdiet sed euismod nisi porta lorem mollis.
+Sed augue lacus viverra vitae congue eu consequat.
+Ut pharetra sit amet aliquam id.
+Aenean euismod elementum nisi quis eleifend.
+Hac habitasse platea dictumst vestibulum rhoncus est pellentesque elit ullamcorper.
+Eget nunc lobortis mattis aliquam faucibus purus.
+Sit amet luctus venenatis lectus magna fringilla.
+Placerat orci nulla pellentesque dignissim enim sit amet venenatis.
+Montes nascetur ridiculus mus mauris.
+Morbi enim nunc faucibus a pellentesque sit amet.
+Et netus et malesuada fames ac turpis egestas.
diff --git a/test/apps/testfile b/test/apps/testfile
new file mode 100644
index 0000000..b56928e
--- /dev/null
+++ b/test/apps/testfile
@@ -0,0 +1,16 @@
+Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
+Fames ac turpis egestas maecenas pharetra convallis posuere morbi.
+Etiam erat velit scelerisque in dictum non consectetur a erat.
+Dolor purus non enim praesent elementum facilisis.
+Nulla porttitor massa id neque aliquam vestibulum morbi blandit cursus.
+Adipiscing vitae proin sagittis nisl rhoncus mattis rhoncus urna neque.
+Aenean pharetra magna ac placerat.
+Pulvinar proin gravida hendrerit lectus a.
+Iaculis nunc sed augue lacus viverra vitae.
+Ac tortor vitae purus faucibus ornare suspendisse sed.
+Purus in mollis nunc sed id semper.
+Non consectetur a erat nam at lectus urna.
+In ante metus dictum at tempor commodo ullamcorper.
+Auctor augue mauris augue neque gravida in fermentum.
+Nunc scelerisque viverra mauris in.
+Morbi leo urna molestie at elementum.
diff --git a/test/lib/__init__.py b/test/lib/__init__.py
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/test/lib/__init__.py
diff --git a/test/lib/test_bsie.py b/test/lib/test_bsie.py
new file mode 100644
index 0000000..277ac67
--- /dev/null
+++ b/test/lib/test_bsie.py
@@ -0,0 +1,231 @@
+"""
+
+Part of the bsie test suite.
+A copy of the license is provided with the project.
+Author: Matthias Baumgartner, 2022
+"""
+# imports
+import os
+import unittest
+
+# bsie imports
+from bsie.tools import builder
+from bsie.utils import ns
+from bsie.utils.bsfs import URI, schema
+from bsie.utils.node import Node
+
+# objects to test
+from bsie.lib.bsie import BSIE
+
+
+## code ##
+
+class TestBSIE(unittest.TestCase):
+    def setUp(self):
+        # reader builder
+        rbuild = builder.ReaderBuilder({})
+        # extractor builder
+        ebuild = builder.ExtractorBuilder([
+            {'bsie.extractor.generic.path.Path': {}},
+            {'bsie.extractor.generic.stat.Stat': {}},
+            {'bsie.extractor.generic.constant.Constant': dict(
+                tuples=[('http://bsfs.ai/schema/Entity#author', 'Me, myself, and I')],
+                schema='''
+                    bse:author rdfs:subClassOf bsfs:Predicate ;
+                        rdfs:domain bsfs:Entity ;
+                        rdfs:range xsd:string ;
+                        bsfs:unique "true"^^xsd:boolean .
+                    ''',
+                )},
+            ])
+        # build pipeline
+        self.prefix = URI('http://example.com/local/file#')
+        pbuild = builder.PipelineBuilder(self.prefix, rbuild, ebuild)
+        self.pipeline = pbuild.build()
+
+    def test_construction(self):
+        # pipeline only
+        lib = BSIE(self.pipeline)
+        self.assertSetEqual(lib.predicates, {
+            ns.bse.filename,
+            ns.bse.filesize,
+            ns.bse.author,
+            })
+        self.assertEqual(lib.schema, schema.Schema.from_string('''
+            prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#>
+            prefix xsd: <http://www.w3.org/2001/XMLSchema#>
+            prefix bsfs: <http://bsfs.ai/schema/>
+            prefix bse: <http://bsfs.ai/schema/Entity#>
+            # essential nodes
+            bsfs:Entity rdfs:subClassOf bsfs:Node .
+            # common definitions
+            xsd:string rdfs:subClassOf bsfs:Literal .
+            xsd:integer rdfs:subClassOf bsfs:Literal .
+
+            bse:filename rdfs:subClassOf bsfs:Predicate ;
+                rdfs:domain bsfs:Entity ;
+                rdfs:range xsd:string ;
+                bsfs:unique "false"^^xsd:boolean .
+
+            bse:filesize rdfs:subClassOf bsfs:Predicate ;
+                rdfs:domain bsfs:Entity ;
+                rdfs:range xsd:integer;
+                bsfs:unique "false"^^xsd:boolean .
+
+            bse:author rdfs:subClassOf bsfs:Predicate ;
+                rdfs:domain bsfs:Entity ;
+                rdfs:range xsd:string ;
+                bsfs:unique "true"^^xsd:boolean .
+
+            '''))
+
+        # specify collect
+        lib = BSIE(self.pipeline, collect={
+            ns.bse.filesize,
+            ns.bse.author,
+            ns.bse.inexistent,
+            })
+        self.assertSetEqual(lib.predicates, {
+            ns.bse.filesize,
+            ns.bse.author,
+            })
+        self.assertEqual(lib.schema, schema.Schema.from_string('''
+            prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#>
+            prefix xsd: <http://www.w3.org/2001/XMLSchema#>
+            prefix bsfs: <http://bsfs.ai/schema/>
+            prefix bse: <http://bsfs.ai/schema/Entity#>
+            # essential nodes
+            bsfs:Entity rdfs:subClassOf bsfs:Node .
+            # common definitions
+            xsd:string rdfs:subClassOf bsfs:Literal .
+            xsd:integer rdfs:subClassOf bsfs:Literal .
+
+            bse:filesize rdfs:subClassOf bsfs:Predicate ;
+                rdfs:domain bsfs:Entity ;
+                rdfs:range xsd:integer;
+                bsfs:unique "false"^^xsd:boolean .
+
+            bse:author rdfs:subClassOf bsfs:Predicate ;
+                rdfs:domain bsfs:Entity ;
+                rdfs:range xsd:string ;
+                bsfs:unique "true"^^xsd:boolean .
+
+            '''))
+        # empty collect is disregarded
+        lib = BSIE(self.pipeline, collect={})
+        self.assertSetEqual(lib.predicates, {
+            ns.bse.filename,
+            ns.bse.filesize,
+            ns.bse.author,
+            })
+        self.assertEqual(lib.schema, schema.Schema.from_string('''
+            prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#>
+            prefix xsd: <http://www.w3.org/2001/XMLSchema#>
+            prefix bsfs: <http://bsfs.ai/schema/>
+            prefix bse: <http://bsfs.ai/schema/Entity#>
+            # essential nodes
+            bsfs:Entity rdfs:subClassOf bsfs:Node .
+            # common definitions
+            xsd:string rdfs:subClassOf bsfs:Literal .
+            xsd:integer rdfs:subClassOf bsfs:Literal .
+
+            bse:filename rdfs:subClassOf bsfs:Predicate ;
+                rdfs:domain bsfs:Entity ;
+                rdfs:range xsd:string ;
+                bsfs:unique "false"^^xsd:boolean .
+
+            bse:filesize rdfs:subClassOf bsfs:Predicate ;
+                rdfs:domain bsfs:Entity ;
+                rdfs:range xsd:integer;
+                bsfs:unique "false"^^xsd:boolean .
+
+            bse:author rdfs:subClassOf bsfs:Predicate ;
+                rdfs:domain bsfs:Entity ;
+                rdfs:range xsd:string ;
+                bsfs:unique "true"^^xsd:boolean .
+
+            '''))
+
+        # specify discard
+        lib = BSIE(self.pipeline, discard={
+            ns.bse.filesize,
+            ns.bse.filename,
+            ns.bse.inexistent,
+            })
+        self.assertSetEqual(lib.predicates, {
+            ns.bse.author,
+            })
+        self.assertEqual(lib.schema, schema.Schema.from_string('''
+            prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#>
+            prefix xsd: <http://www.w3.org/2001/XMLSchema#>
+            prefix bsfs: <http://bsfs.ai/schema/>
+            prefix bse: <http://bsfs.ai/schema/Entity#>
+            # essential nodes
+            bsfs:Entity rdfs:subClassOf bsfs:Node .
+            # common definitions
+            xsd:string rdfs:subClassOf bsfs:Literal .
+
+            bse:author rdfs:subClassOf bsfs:Predicate ;
+                rdfs:domain bsfs:Entity ;
+                rdfs:range xsd:string ;
+                bsfs:unique "true"^^xsd:boolean .
+
+            '''))
+
+        # specify collect and discard
+        lib = BSIE(self.pipeline,
+            collect={ns.bse.filesize, ns.bse.author, ns.bse.foo, ns.bse.bar},
+            discard={ns.bse.author, ns.bse.foo, ns.bse.foobar},
+            )
+        self.assertSetEqual(lib.predicates, {
+            ns.bse.filesize,
+            })
+        self.assertEqual(lib.schema, schema.Schema.from_string('''
+            prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#>
+            prefix xsd: <http://www.w3.org/2001/XMLSchema#>
+            prefix bsfs: <http://bsfs.ai/schema/>
+            prefix bse: <http://bsfs.ai/schema/Entity#>
+            # essential nodes
+            bsfs:Entity rdfs:subClassOf bsfs:Node .
+            # common definitions
+            xsd:integer rdfs:subClassOf bsfs:Literal .
+
+            bse:filesize rdfs:subClassOf bsfs:Predicate ;
+                rdfs:domain bsfs:Entity ;
+                rdfs:range xsd:integer;
+                bsfs:unique "false"^^xsd:boolean .
+
+            '''))
+
+
+    def test_from_file(self):
+        # setup
+        lib = BSIE(self.pipeline)
+        self.assertSetEqual(set(lib.predicates), {
+            ns.bse.filesize,
+            ns.bse.filename,
+            ns.bse.author,
+            })
+        content_hash = 'a948904f2f0f479b8f8197694b30184b0d2ed1c1cd2a1ec0fb85d299a192a447'
+        subject = Node(ns.bsfs.Entity, self.prefix + content_hash)
+        testfile = os.path.join(os.path.dirname(__file__), 'testfile.t')
+
+        # from_file extracts all available triples
+        self.assertSetEqual(set(lib.from_file(testfile)), {
+            (subject, lib.schema.predicate(ns.bse.filename), 'testfile.t'),
+            (subject, lib.schema.predicate(ns.bse.filesize), 12),
+            (subject, lib.schema.predicate(ns.bse.author), 'Me, myself, and I'),
+            })
+
+        # from_file respects predicate argument
+        self.assertSetEqual(set(lib.from_file(testfile, {ns.bse.filename, ns.bse.invalid})), {
+            (subject, lib.schema.predicate(ns.bse.filename), 'testfile.t'),
+            })
+
+
+## main ##
+
+if __name__ == '__main__':
+    unittest.main()
+
+## EOF ##
diff --git a/test/lib/testfile.t b/test/lib/testfile.t
new file mode 100644
index 0000000..3b18e51
--- /dev/null
+++ b/test/lib/testfile.t
@@ -0,0 +1 @@
+hello world
diff --git a/test/tools/test_pipeline.py b/test/tools/test_pipeline.py
index f98b329..0dd8c75 100644
--- a/test/tools/test_pipeline.py
+++ b/test/tools/test_pipeline.py
@@ -95,7 +95,7 @@ class TestPipeline(unittest.TestCase):
         # build pipeline
         pipeline = Pipeline(self.prefix, self.ext2rdr)
         # build objects for tests
-        content_hash = 'e3bb4ab54e4a50d75626a1f76814f152f4edc60a82ad724aa2aa922ca5534427'
+        content_hash = 'a948904f2f0f479b8f8197694b30184b0d2ed1c1cd2a1ec0fb85d299a192a447'
         subject = Node(ns.bsfs.Entity, self.prefix + content_hash)
         testfile = os.path.join(os.path.dirname(__file__), 'testfile.t')
         p_filename = pipeline.schema.predicate(ns.bse.filename)
@@ -108,7 +108,7 @@ class TestPipeline(unittest.TestCase):
         # extract given predicates
         self.assertSetEqual(set(pipeline(testfile, {p_filename, p_filesize})), {
             (subject, p_filename, 'testfile.t'),
-            (subject, p_filesize, 11),
+            (subject, p_filesize, 12),
             })
         self.assertSetEqual(set(pipeline(testfile, {p_author})), {
             (subject, p_author, 'Me, myself, and I'),
@@ -117,12 +117,12 @@ class TestPipeline(unittest.TestCase):
             (subject, p_filename, 'testfile.t'),
             })
         self.assertSetEqual(set(pipeline(testfile, {p_filesize})), {
-            (subject, p_filesize, 11),
+            (subject, p_filesize, 12),
             })
         # extract all predicates
         self.assertSetEqual(set(pipeline(testfile)), {
             (subject, p_filename, 'testfile.t'),
-            (subject, p_filesize, 11),
+            (subject, p_filesize, 12),
             (subject, p_author, 'Me, myself, and I'),
             (subject, p_rating, 123),
             })
@@ -158,6 +158,18 @@ class TestPipeline(unittest.TestCase):
             p_filename = pipeline.schema.predicate(ns.bse.filename)
             self.assertSetEqual(set(pipeline(testfile, {p_filename})), set())
 
+    def test_predicates(self):
+        # build pipeline
+        pipeline = Pipeline(self.prefix, self.ext2rdr)
+        #
+        self.assertSetEqual(set(pipeline.predicates()), {
+            pipeline.schema.predicate(ns.bsfs.Predicate),
+            pipeline.schema.predicate(ns.bse.filename),
+            pipeline.schema.predicate(ns.bse.filesize),
+            pipeline.schema.predicate(ns.bse.author),
+            pipeline.schema.predicate(ns.bse.rating),
+            })
+
 
 ## main ##
 
diff --git a/test/tools/testfile.t b/test/tools/testfile.t
index 58bf1b8..3b18e51 100644
--- a/test/tools/testfile.t
+++ b/test/tools/testfile.t
@@ -1 +1 @@
-hello worl
+hello world