Remove nose dependence

Also move test images into the base repo because they're not very big anyways

tests/__init__.py

@@ -1,9 +1,4 @@
 import os.path
+import unittest
 
-# Some checks to run before tests can begin
 images_path = os.path.join(os.path.dirname(os.path.realpath(__file__)), 'images')
-
-assert os.path.isdir(images_path), 'test images repo not present'
-assert os.path.isfile(os.path.join(images_path, '__init__.py')), 'images __init__.py not present, is the test image repo present?'
-bp_size = os.path.getsize(os.path.join(images_path, 'Boilerplate.png'))
-assert bp_size == 955989, 'Boilerplate.png is the wrong size, is the test image repo checked out with LFS enabled?'

tests/images/__init__.py

@@ -0,0 +1,32 @@
+from PIL import Image
+from quicktex.s3tc.bc1 import BC1Block
+from quicktex.s3tc.bc4 import BC4Block
+from quicktex import RawTexture
+import os.path
+
+image_path = os.path.dirname(os.path.realpath(__file__))
+
+
+class BC1Blocks:
+    class Entry:
+        def __init__(self, filename, block):
+            path = os.path.join(image_path, 'bc1', filename)
+            self.image = Image.open(path).convert('RGBA')
+            self.texture = RawTexture.frombytes(self.image.tobytes('raw', 'RGBA'), *self.image.size)
+            self.block = block
+
+    greyscale = Entry('greyscale_unpacked.png', BC1Block.frombytes(b'\xFF\xFF\x49\x4A\x78\x78\x78\x78'))
+    three_color = Entry('3color_unpacked.png', BC1Block.frombytes(b'\xE0\x07\x00\xF8\x29\x29\x29\x29'))
+    three_color_black = Entry('3color_black_unpacked.png', BC1Block.frombytes(b'\xE0\x07\x00\xF8\x27\x27\x27\x27'))
+
+
+class BC4Blocks:
+    class Entry:
+        def __init__(self, filename, block):
+            path = os.path.join(image_path, 'bc4', filename)
+            self.image = Image.open(path).convert('RGBA')
+            self.texture = RawTexture.frombytes(self.image.tobytes('raw', 'RGBA'), *self.image.size)
+            self.block = block
+
+    six_value = Entry('6value.png', BC4Block(8, 248, [[0, 1, 2, 3]] * 2 + [[4, 5, 6, 7]] * 2))
+    eight_value = Entry('8value.png', BC4Block(240, 16, [[0, 1, 2, 3]] * 2 + [[4, 5, 6, 7]] * 2))

tests/test_bc1.py

@@ -1,5 +1,4 @@
 import unittest
-import nose
 import os.path
 from parameterized import parameterized, parameterized_class
 import quicktex
@@ -108,9 +107,9 @@ class TestBC1Texture(unittest.TestCase):
         self.assertEqual(self.tex[-1, -1], self.tex[self.wb - 1, self.hb - 1], 'incorrect negative subscripting')
 
         with self.assertRaises(IndexError):
-            thing = self.tex[self.wb, self.hb]
+            _ = self.tex[self.wb, self.hb]
         with self.assertRaises(IndexError):
-            thing = self.tex[-1 - self.wb, -1 - self.hb]
+            _ = self.tex[-1 - self.wb, -1 - self.hb]
 
     def test_buffer(self):
         """Test the buffer protocol of BC1Texture"""
@@ -158,7 +157,8 @@ class TestBC1Encoder(unittest.TestCase):
 
         out_block = out_tex[0, 0]
 
-        if self.color_mode != BC1Encoder.ColorMode.FourColor:  # we only care about the selectors if we are in 3 color mode
+        if self.color_mode != BC1Encoder.ColorMode.FourColor:
+            # we only care about the selectors if we are in 3 color mode
             self.assertTrue(out_block.is_3color, 'returned 4-color block for 3 color test block')
             self.assertEqual(out_block, BC1Blocks.three_color.block, 'encoded block is incorrect')
         else:
@@ -173,7 +173,8 @@ class TestBC1Encoder(unittest.TestCase):
         out_block = out_tex[0, 0]
         has_black = 3 in [j for row in out_block.selectors for j in row]
 
-        if self.color_mode == BC1Encoder.ColorMode.ThreeColorBlack:  # we only care about the selectors if we are in 3 color black mode
+        if self.color_mode == BC1Encoder.ColorMode.ThreeColorBlack:
+            # we only care about the selectors if we are in 3 color black mode
             self.assertTrue(out_block.is_3color, 'returned 4-color block for 3 color test block with black')
             self.assertTrue(has_black, 'block does not have black pixels as expected')
             self.assertEqual(out_block, BC1Blocks.three_color_black.block, "encoded block is incorrect")
@@ -207,7 +208,3 @@ class TestBC1Decoder(unittest.TestCase):
         img_diff = ImageChops.difference(out_img, image).convert('L')
         img_hist = img_diff.histogram()
         self.assertEqual(16, img_hist[0], 'decoded block is incorrect')
-
-
-if __name__ == '__main__':
-    nose.main()

tests/test_bc4.py

@@ -1,13 +1,9 @@
 import unittest
-import nose
 from parameterized import parameterized, parameterized_class
 from quicktex.s3tc.bc4 import BC4Block, BC4Texture, BC4Encoder, BC4Decoder
 from tests.images import BC4Blocks
 from PIL import Image, ImageChops
 
-if __name__ == '__main__':
-    nose.main()
-
 
 class TestBC4Block(unittest.TestCase):
     """Tests for the BC1Block class"""
@@ -119,9 +115,9 @@ class TestBC4Texture(unittest.TestCase):
         self.assertEqual(self.tex[-1, -1], self.tex[self.wb - 1, self.hb - 1], 'incorrect negative subscripting')
 
         with self.assertRaises(IndexError):
-            thing = self.tex[self.wb, self.hb]
+            _ = self.tex[self.wb, self.hb]
         with self.assertRaises(IndexError):
-            thing = self.tex[-1 - self.wb, -1 - self.hb]
+            _ = self.tex[-1 - self.wb, -1 - self.hb]
 
     def test_buffer(self):
         """Test the buffer protocol of BC4Texture"""

tests/test_install.py

@@ -3,32 +3,21 @@
 import unittest
 import os.path
 import quicktex
-import nose
 
 tests_path = os.path.dirname(os.path.realpath(__file__))
 
 
-def test_images():
-    """Test for the images submodule"""
+class TestInstall(unittest.TestCase):
+    def test_version(self):
+        """Test if the extension module version matches what setuptools returns"""
+        try:
+            from importlib import metadata
+        except ImportError:
+            # Python < 3.8, so we cant get the metadata, so just check if it exists
+            assert quicktex.__version__
+            print(f'Cannot check version in python < 3.8. __version__ is {quicktex.__version__}')
+            return
 
-    images_path = os.path.join(tests_path, 'images')
+        version = metadata.version('quicktex')
 
-    assert os.path.isdir(images_path), 'test images repo not present. run "git clone https://git.pileof.rocks/drewcassidy/quicktex-test-images.git tests/images" to download them'
-    assert os.path.isfile(os.path.join(images_path, '__init__.py')), 'images __init__.py not present, is the test image repo present?'
-    bp_size = os.path.getsize(os.path.join(images_path, 'Boilerplate.png'))
-    assert bp_size == 955989, 'Boilerplate.png is the wrong size, is the test image repo checked out with LFS enabled?'
-
-
-def test_version():
-    """Test if the extension module version matches what setuptools returns"""
-    try:
-        from importlib import metadata
-    except ImportError:
-        # Python < 3.8, so we cant get the metadata, so just check if it exists
-        assert quicktex.__version__
-        print(f'Cannot check version in python < 3.8. __version__ is {quicktex.__version__}')
-        return
-
-    version = metadata.version('quicktex')
-
-    assert version == quicktex.__version__, 'incorrect version string from extension module'
+        assert version == quicktex.__version__, 'incorrect version string from extension module'

tests/test_texture.py

@@ -1,5 +1,4 @@
 import unittest
-import nose
 import os.path
 from tests.images import image_path
 from quicktex import RawTexture
@@ -57,7 +56,3 @@ class TestRawTexture(unittest.TestCase):
         """Test the frombytes factory function"""
         bytetex = RawTexture.frombytes(self.boilerplate_bytes, *self.boilerplate.size)
         self.assertEqual(self.boilerplate_bytes, bytetex.tobytes(), 'Incorrect bytes after writing to buffer')
-
-
-if __name__ == '__main__':
-    nose.main()