Add basic unit tests

MANIFEST.in

@@ -0,0 +1,6 @@
+# Note: See the PyPA documentation for a list of file names that are included/excluded by default:
+# https://packaging.python.org/guides/using-manifest-in/#how-files-are-included-in-an-sdist
+# Please only add entries here for files that are *not* already handled by default.
+
+recursive-include tests *.py
+recursive-include tests/data *.rsrc

tests/test_rsrcfork.py

@@ -0,0 +1,66 @@
+import collections
+import pathlib
+import unittest
+
+import rsrcfork
+
+
+DATA_DIR = pathlib.Path(__file__).parent / "data"
+EMPTY_RSRC_FILE = DATA_DIR / "empty.rsrc"
+TEXTCLIPPING_RSRC_FILE = DATA_DIR / "unicode.textClipping.rsrc"
+
+UNICODE_TEXT = "Here is some text, including Üñïçø∂é!"
+DRAG_DATA = (
+	b"\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x03"
+	b"utxt\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00"
+	b"utf8\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00"
+	b"TEXT\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00"
+)
+TEXTCLIPPING_RESOURCES = collections.OrderedDict([
+	(b"utxt", collections.OrderedDict([
+		(256, UNICODE_TEXT.encode("utf-16-be")),
+	])),
+	(b"utf8", collections.OrderedDict([
+		(256, UNICODE_TEXT.encode("utf-8")),
+	])),
+	(b"TEXT", collections.OrderedDict([
+		(256, UNICODE_TEXT.encode("macroman")),
+	])),
+	(b"drag", collections.OrderedDict([
+		(128, DRAG_DATA),
+	]))
+])
+
+
+class ResourceFileReadTests(unittest.TestCase):
+	def test_empty(self) -> None:
+		with rsrcfork.open(EMPTY_RSRC_FILE, fork="data") as rf:
+			self.assertEqual(rf.header_system_data, bytes(112))
+			self.assertEqual(rf.header_application_data, bytes(128))
+			for attr in rsrcfork.ResourceFileAttrs:
+				self.assertNotIn(attr, rf.file_attributes)
+			self.assertEqual(list(rf), [])
+	
+	def test_textclipping(self) -> None:
+		with rsrcfork.open(TEXTCLIPPING_RSRC_FILE, fork="data") as rf:
+			self.assertEqual(rf.header_system_data, bytes(112))
+			self.assertEqual(rf.header_application_data, bytes(128))
+			for attr in rsrcfork.ResourceFileAttrs:
+				self.assertNotIn(attr, rf.file_attributes)
+			self.assertEqual(list(rf), list(TEXTCLIPPING_RESOURCES))
+			
+			for (actual_type, actual_reses), (expected_type, expected_reses) in zip(rf.items(), TEXTCLIPPING_RESOURCES.items()):
+				with self.subTest(type=expected_type):
+					self.assertEqual(actual_type, expected_type)
+					for (actual_id, actual_res), (expected_id, expected_data) in zip(actual_reses.items(), expected_reses.items()):
+						with self.subTest(id=expected_id):
+							self.assertEqual(actual_res.type, expected_type)
+							self.assertEqual(actual_res.id, expected_id)
+							self.assertEqual(actual_res.name, None)
+							for attr in rsrcfork.ResourceAttrs:
+								self.assertNotIn(attr, actual_res.attributes)
+							self.assertEqual(actual_res.data, expected_data)
+							self.assertEqual(actual_res.compressed_info, None)
+
+if __name__ == "__main__":
+	unittest.main()