commit a9c43763ce7d4ce6a48331acc0092711ed11afef
author Vishnu Nair <vishnun@google.com> Fri Jan 27 19:10:25 2023 +0000
committer Vishnu Nair <vishnun@google.com> Fri Jan 27 22:57:07 2023 +0000
tree e4ecf915d5b0c3ff0887b1f437a09a6cc10d1b8d
parent 710b8b3956beb6496ff734ee8b18549bf1234559

SF: Support display mirroring with new frontend

Bug: 238781169
Test: presubmit
Change-Id: I569822bd1dd70e2b0b660042329abb27f263dc66

services/surfaceflinger/tests/unittests/LayerHierarchyTest.cpp

diff --git a/services/surfaceflinger/tests/unittests/LayerHierarchyTest.cpp b/services/surfaceflinger/tests/unittests/LayerHierarchyTest.cpp
index 783df28..763426a 100644
--- a/services/surfaceflinger/tests/unittests/LayerHierarchyTest.cpp
+++ b/services/surfaceflinger/tests/unittests/LayerHierarchyTest.cpp
@@ -641,4 +641,69 @@
     EXPECT_EQ(getTraversalPath(hierarchyBuilder.getOffscreenHierarchy()), expectedTraversalPath);
 }
 
+TEST_F(LayerHierarchyTest, canMirrorDisplay) {
+    LayerHierarchyBuilder hierarchyBuilder(mLifecycleManager.getLayers());
+    setFlags(12, layer_state_t::eLayerSkipScreenshot, layer_state_t::eLayerSkipScreenshot);
+    createDisplayMirrorLayer(3, ui::LayerStack::fromValue(0));
+    setLayerStack(3, 1);
+    UPDATE_AND_VERIFY(hierarchyBuilder);
+
+    std::vector<uint32_t> expected = {3, 1,  11,  111, 12,  121, 122,  1221, 13, 2,
+                                      1, 11, 111, 12,  121, 122, 1221, 13,   2};
+    EXPECT_EQ(getTraversalPath(hierarchyBuilder.getHierarchy()), expected);
+    EXPECT_EQ(getTraversalPathInZOrder(hierarchyBuilder.getHierarchy()), expected);
+    expected = {};
+    EXPECT_EQ(getTraversalPath(hierarchyBuilder.getOffscreenHierarchy()), expected);
+}
+
+TEST_F(LayerHierarchyTest, mirrorNonExistingDisplay) {
+    LayerHierarchyBuilder hierarchyBuilder(mLifecycleManager.getLayers());
+    setFlags(12, layer_state_t::eLayerSkipScreenshot, layer_state_t::eLayerSkipScreenshot);
+    createDisplayMirrorLayer(3, ui::LayerStack::fromValue(5));
+    setLayerStack(3, 1);
+    UPDATE_AND_VERIFY(hierarchyBuilder);
+
+    std::vector<uint32_t> expected = {3, 1, 11, 111, 12, 121, 122, 1221, 13, 2};
+    EXPECT_EQ(getTraversalPath(hierarchyBuilder.getHierarchy()), expected);
+    EXPECT_EQ(getTraversalPathInZOrder(hierarchyBuilder.getHierarchy()), expected);
+    expected = {};
+    EXPECT_EQ(getTraversalPath(hierarchyBuilder.getOffscreenHierarchy()), expected);
+}
+
+TEST_F(LayerHierarchyTest, newRootLayerIsMirrored) {
+    LayerHierarchyBuilder hierarchyBuilder(mLifecycleManager.getLayers());
+    setFlags(12, layer_state_t::eLayerSkipScreenshot, layer_state_t::eLayerSkipScreenshot);
+    createDisplayMirrorLayer(3, ui::LayerStack::fromValue(0));
+    setLayerStack(3, 1);
+    UPDATE_AND_VERIFY(hierarchyBuilder);
+
+    createRootLayer(4);
+    UPDATE_AND_VERIFY(hierarchyBuilder);
+
+    std::vector<uint32_t> expected = {3, 1,  11,  111, 12,  121, 122,  1221, 13, 2, 4,
+                                      1, 11, 111, 12,  121, 122, 1221, 13,   2,  4};
+    EXPECT_EQ(getTraversalPath(hierarchyBuilder.getHierarchy()), expected);
+    EXPECT_EQ(getTraversalPathInZOrder(hierarchyBuilder.getHierarchy()), expected);
+    expected = {};
+    EXPECT_EQ(getTraversalPath(hierarchyBuilder.getOffscreenHierarchy()), expected);
+}
+
+TEST_F(LayerHierarchyTest, removedRootLayerIsNoLongerMirrored) {
+    LayerHierarchyBuilder hierarchyBuilder(mLifecycleManager.getLayers());
+    setFlags(12, layer_state_t::eLayerSkipScreenshot, layer_state_t::eLayerSkipScreenshot);
+    createDisplayMirrorLayer(3, ui::LayerStack::fromValue(0));
+    setLayerStack(3, 1);
+    UPDATE_AND_VERIFY(hierarchyBuilder);
+
+    reparentLayer(1, UNASSIGNED_LAYER_ID);
+    destroyLayerHandle(1);
+    UPDATE_AND_VERIFY(hierarchyBuilder);
+
+    std::vector<uint32_t> expected = {3, 2, 2};
+    EXPECT_EQ(getTraversalPath(hierarchyBuilder.getHierarchy()), expected);
+    EXPECT_EQ(getTraversalPathInZOrder(hierarchyBuilder.getHierarchy()), expected);
+    expected = {11, 111, 12, 121, 122, 1221, 13};
+    EXPECT_EQ(getTraversalPath(hierarchyBuilder.getOffscreenHierarchy()), expected);
+}
+
 } // namespace android::surfaceflinger::frontend