Merge pull request #94 from FoamyGuy/png_load_test

load png test case

Author: tannewt

tests/test_png.png

@@ -0,0 +1,2 @@
+# SPDX-FileCopyrightText: 2025 Tim Cocks for Adafruit Industries
+# SPDX-License-Identifier: MIT

tests/test_png.png.license

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+# SPDX-FileCopyrightText: 2025 Tim Cocks for Adafruit Industries
+# SPDX-License-Identifier: MIT
+
+from unittest import TestCase
+
+from adafruit_imageload import load
+
+
+class TestPngLoad(TestCase):
+    def test_expected_pixels(self):
+        img, palette = load("tests/test_png.png")
+        self.assertEqual(len(palette), 3)
+        self.assertEqual(img.width, 4)
+        self.assertEqual(img.height, 4)
+
+        self.assertEqual(img[0, 0], 0)
+        self.assertEqual(img[1, 0], 2)
+        self.assertEqual(img[2, 0], 1)
+        self.assertEqual(img[3, 0], 0)
+
+        self.assertEqual(img[0, 3], 0)
+        self.assertEqual(img[1, 3], 2)
+        self.assertEqual(img[2, 3], 1)
+        self.assertEqual(img[3, 3], 0)