commit 3d22f3ae88812c6cd200259877c76da51dfc47f2
author Chia-I Wu <olv@google.com> Thu Nov 02 08:30:27 2017 -0700
committer Chia-I Wu <olv@google.com> Tue Nov 21 13:20:38 2017 -0800
tree 8c980dc33c655ae613bd4dc2193109d01576ab73
parent e4ef6102644474b4a74810abf50835592ba0d78e

surfaceflinger: add more setLayerStack tests

Add LayerTransactionTest.
  SetLayerStackBasic

Test: SurfaceFlinger_test
Change-Id: Ica18beed20cecb958f79ec49a66ec5ee65278318

services/surfaceflinger/tests/Transaction_test.cpp

diff --git a/services/surfaceflinger/tests/Transaction_test.cpp b/services/surfaceflinger/tests/Transaction_test.cpp
index 3110fdc..7033dea 100644
--- a/services/surfaceflinger/tests/Transaction_test.cpp
+++ b/services/surfaceflinger/tests/Transaction_test.cpp
@@ -988,6 +988,24 @@
     screenshot()->expectColor(Rect(0, 0, 32, 32), Color::RED);
 }
 
+TEST_F(LayerTransactionTest, SetLayerStackBasic) {
+    sp<SurfaceControl> layer;
+    ASSERT_NO_FATAL_FAILURE(layer = createLayer("test", 32, 32));
+    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, Color::RED));
+
+    Transaction().setLayerStack(layer, mDisplayLayerStack + 1).apply();
+    {
+        SCOPED_TRACE("non-existing layer stack");
+        screenshot()->expectColor(Rect(0, 0, mDisplayWidth, mDisplayHeight), Color::BLACK);
+    }
+
+    Transaction().setLayerStack(layer, mDisplayLayerStack).apply();
+    {
+        SCOPED_TRACE("original layer stack");
+        screenshot()->expectColor(Rect(0, 0, 32, 32), Color::RED);
+    }
+}
+
 class LayerUpdateTest : public ::testing::Test {
 protected:
     virtual void SetUp() {