commit 459bb9f345fa08dc1132dcc7b091a8bb19e723da
author Sally Qi <sallyqi@google.com> Mon Jul 18 10:45:00 2022 -0700
committer Sally Qi <sallyqi@google.com> Wed Jul 20 21:06:17 2022 -0700
tree 26b54b989be6e39f425b0e0dc11f5bc6a21e3df4
parent bde943e2ff0dce10cdf415c1c6f4c338f9beb3ff

Add tolerance to testSDRFromSurfaceViewAndTextureView cts test bitmap
comparison.

Bug: 238776037
Test: TextureViewTest
Change-Id: Ic638f154186c17797afd9e22c2d24040b4e38926

tests/tests/view/src/android/view/cts/TextureViewTest.java

diff --git a/tests/tests/view/src/android/view/cts/TextureViewTest.java b/tests/tests/view/src/android/view/cts/TextureViewTest.java
index 804d0fa..3b2c086 100644
--- a/tests/tests/view/src/android/view/cts/TextureViewTest.java
+++ b/tests/tests/view/src/android/view/cts/TextureViewTest.java
@@ -372,7 +372,19 @@
         WidgetTestUtils.runOnMainAndDrawSync(
                 mSDRActivityRule, textureView, () -> textureView.getBitmap(textureViewScreenshot));
 
-        assertTrue(textureViewScreenshot.sameAs(surfaceViewScreenshot));
+        // sample 5 pixels on the edge for bitmap comparison.
+        // TextureView and SurfaceView use different shaders, so compare these two with tolerance.
+        final int threshold = 2;
+        assertTrue(pixelsAreSame(surfaceViewScreenshot.getPixel(width / 2, 0),
+                textureViewScreenshot.getPixel(width / 2, 0), threshold));
+        assertTrue(pixelsAreSame(surfaceViewScreenshot.getPixel(0, height / 2),
+                textureViewScreenshot.getPixel(0, height / 2), threshold));
+        assertTrue(pixelsAreSame(surfaceViewScreenshot.getPixel(width / 2, height / 2),
+                textureViewScreenshot.getPixel(width / 2, height / 2), threshold));
+        assertTrue(pixelsAreSame(surfaceViewScreenshot.getPixel(width / 2, height - 1),
+                textureViewScreenshot.getPixel(width / 2, height - 1), threshold));
+        assertTrue(pixelsAreSame(surfaceViewScreenshot.getPixel(width - 1, height / 2),
+                textureViewScreenshot.getPixel(width - 1, height / 2), threshold));
     }
 
     @Test