package restructuring: base

* Reader and Extractor to respective reader/extractor modules
* ReaderBuilder to reader module
* ExtractorBuilder to extractor module
* Loading module in utils (safe_load, unpack_name)
* Pipeline and PipelineBuilder to lib module
* errors to utils
* documentation: "standard import" and "external import"

3 files changed, 101 insertions, 2 deletions

diff --git a/test/reader/test_base.py b/test/reader/test_base.py
new file mode 100644
index 0000000..41f4c29
--- /dev/null
+++ b/test/reader/test_base.py
@@ -0,0 +1,45 @@
+"""
+
+Part of the bsie test suite.
+A copy of the license is provided with the project.
+Author: Matthias Baumgartner, 2022
+"""
+# standard imports
+import unittest
+
+# objects to test
+from bsie.reader import Reader
+
+
+## code ##
+
+class StubReader(Reader):
+    def __call__(self, path):
+        raise NotImplementedError()
+
+class StubSub(StubReader):
+    pass
+
+class TestReader(unittest.TestCase):
+    def test_essentials(self):
+        ext = StubReader()
+        self.assertEqual(str(ext), 'StubReader')
+        self.assertEqual(repr(ext), 'StubReader()')
+        self.assertEqual(ext, StubReader())
+        self.assertEqual(hash(ext), hash(StubReader()))
+
+        sub = StubSub()
+        self.assertEqual(str(sub), 'StubSub')
+        self.assertEqual(repr(sub), 'StubSub()')
+        self.assertEqual(sub, StubSub())
+        self.assertEqual(hash(sub), hash(StubSub()))
+        self.assertNotEqual(ext, sub)
+        self.assertNotEqual(hash(ext), hash(sub))
+
+
+## main ##
+
+if __name__ == '__main__':
+    unittest.main()
+
+## EOF ##
diff --git a/test/reader/test_builder.py b/test/reader/test_builder.py
new file mode 100644
index 0000000..92e9edc
--- /dev/null
+++ b/test/reader/test_builder.py
@@ -0,0 +1,54 @@
+"""
+
+Part of the bsie test suite.
+A copy of the license is provided with the project.
+Author: Matthias Baumgartner, 2022
+"""
+# standard imports
+import unittest
+
+# bsie imports
+from bsie.utils import errors
+
+# objects to test
+from bsie.reader import ReaderBuilder
+
+
+## code ##
+
+class TestReaderBuilder(unittest.TestCase):
+    def test_build(self):
+        builder = ReaderBuilder({'bsie.reader.path.Path': {}})
+        # build configured reader
+        cls = builder.build('bsie.reader.path.Path')
+        import bsie.reader.path
+        self.assertIsInstance(cls, bsie.reader.path.Path)
+        # build unconfigured reader
+        cls = builder.build('bsie.reader.stat.Stat')
+        import bsie.reader.stat
+        self.assertIsInstance(cls, bsie.reader.stat.Stat)
+        # re-build previous reader (test cache)
+        self.assertEqual(cls, builder.build('bsie.reader.stat.Stat'))
+        # test invalid
+        self.assertRaises(TypeError, builder.build, 123)
+        self.assertRaises(TypeError, builder.build, None)
+        self.assertRaises(ValueError, builder.build, '')
+        self.assertRaises(ValueError, builder.build, 'Path')
+        self.assertRaises(errors.BuilderError, builder.build, 'path.Path')
+        # invalid config
+        builder = ReaderBuilder({'bsie.reader.stat.Stat': dict(foo=123)})
+        self.assertRaises(errors.BuilderError, builder.build, 'bsie.reader.stat.Stat')
+        builder = ReaderBuilder({'bsie.reader.stat.Stat': 123})
+        self.assertRaises(TypeError, builder.build, 'bsie.reader.stat.Stat')
+        # no instructions
+        builder = ReaderBuilder({})
+        cls = builder.build('bsie.reader.stat.Stat')
+        self.assertIsInstance(cls, bsie.reader.stat.Stat)
+
+
+## main ##
+
+if __name__ == '__main__':
+    unittest.main()
+
+## EOF ##
diff --git a/test/reader/test_stat.py b/test/reader/test_stat.py
index d12ad9c..fd9fdcd 100644
--- a/test/reader/test_stat.py
+++ b/test/reader/test_stat.py
@@ -4,12 +4,12 @@ Part of the bsie test suite.
 A copy of the license is provided with the project.
 Author: Matthias Baumgartner, 2022
 """
-# imports
+# standard imports
 import os
 import unittest
 
 # bsie imports
-from bsie.base import errors
+from bsie.utils import errors
 
 # objects to test
 from bsie.reader.stat import Stat