add a unit test for extracting a single text asset, mostly as an example

closes HearthSim#107

CONTRIBUTING.md

@@ -29,6 +29,15 @@ If you need to modify it or amend it in some way, you should always appropriatel
 Also see: [Github Help: Using Pull Requests](https://help.github.com/articles/using-pull-requests/)
 
 
+### Running Tests
+
+To run unit tests, simply run:
+
+```bash
+python3 -m unittest discover
+```
+
+
 ### Need help?
 
 You can always ask for help in our IRC channel, `#Hearthsim` on [Freenode](https://freenode.net/).

unitypack/__init__.py

@@ -1,7 +1,7 @@
-import pkg_resources
 
-
-__version__ = pkg_resources.require("unitypack")[0].version
+if __name__ == '__main__':
+	import pkg_resources
+	__version__ = pkg_resources.require("unitypack")[0].version
 
 
 def load(file, env=None):

unitypack/test/test_read_bundle.py

@@ -0,0 +1,26 @@
+from .. import *
+import unittest
+from .. import load
+from pathlib import Path
+
+def get_bundle_fixture(name):
+	return Path(__file__).parent / 'fixtures' / 'bundles' / name
+
+class TestReadAssetBundle(unittest.TestCase):
+	def test_single_text_file(self):
+		with get_bundle_fixture("single-text-file-2019.3.13f1-no-compression").open("rb") as f:
+			bundle = load(f)
+		self.assertEqual(bundle.name, "CAB-2c069a3745be5cfe0c630ceac750b567")
+		self.assertFalse(bundle.compressed)
+		self.assertEqual(len(bundle.assets), 1)
+		asset = bundle.assets[0]
+		self.assertEqual(len(asset.objects), 2)
+		obj = list(asset.objects.items())[0][1]
+		self.assertEqual(obj.type, "TextAsset")
+		data = obj.read()
+		self.assertEqual(data.name, "example")
+		self.assertEqual(data.bytes, "ligma\n")
+
+if __name__ == '__main__':
+	unittest.main()
+