Merge 757a728 into 5477941

python-pillow · May 16, 2016 · 56a325a · 56a325a
2 parents 5477941 + 757a728
commit 56a325a
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Showing 2 changed files with 265 additions and 169 deletions.
diff --git a/Tests/test_image_resample.py b/Tests/test_image_resample.py
@@ -33,5 +33,43 @@ def test_invalid_size(self):
         except ValueError:
             self.assertTrue(True, "Should raise ValueError")
 
+
+class CoreResampleConsistencyTest(PillowTestCase):
+
+    def make_case(self, mode, fill):
+        im = Image.new(mode, (512, 9), fill)
+        return (im.resize((9, 512), Image.LANCZOS), im.load()[0, 0])
+
+    def run_case(self, case):
+        channel, color = case
+        px = channel.load()
+        for x in range(channel.size[0]):
+            for y in range(channel.size[1]):
+                if px[x, y] != color:
+                    message = "{} != {} for pixel {}".format(
+                        px[x, y], color, (x, y))
+                    self.assertEqual(px[x, y], color, message)
+
+    def test_8u(self):
+        im, color = self.make_case('RGB', (0, 64, 255))
+        r, g, b = im.split()
+        self.run_case((r, color[0]))
+        self.run_case((g, color[1]))
+        self.run_case((b, color[2]))
+        self.run_case(self.make_case('L', 12))
+
+    def test_32i(self):
+        self.run_case(self.make_case('I', 12))
+        self.run_case(self.make_case('I', 0x7fffffff))
+        self.run_case(self.make_case('I', -12))
+        self.run_case(self.make_case('I', -1 << 31))
+
+    def test_32f(self):
+        self.run_case(self.make_case('F', 1))
+        self.run_case(self.make_case('F', 3.40282306074e+38))
+        self.run_case(self.make_case('F', 1.175494e-38))
+        self.run_case(self.make_case('F', 1.192093e-07))
+
+
 if __name__ == '__main__':
     unittest.main()