diff --git a/services/surfaceflinger/tests/Android.bp b/services/surfaceflinger/tests/Android.bp
index f422939..d021fc2 100644
--- a/services/surfaceflinger/tests/Android.bp
+++ b/services/surfaceflinger/tests/Android.bp
@@ -28,6 +28,7 @@
         "LayerTypeAndRenderTypeTransaction_test.cpp",
         "LayerTypeTransaction_test.cpp",
         "LayerUpdate_test.cpp",
+        "MirrorLayer_test.cpp",
         "MultiDisplayLayerBounds_test.cpp",
         "RelativeZ_test.cpp",
         "SetGeometry_test.cpp",
diff --git a/services/surfaceflinger/tests/MirrorLayer_test.cpp b/services/surfaceflinger/tests/MirrorLayer_test.cpp
new file mode 100644
index 0000000..0bcac1a
--- /dev/null
+++ b/services/surfaceflinger/tests/MirrorLayer_test.cpp
@@ -0,0 +1,226 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "LayerTransactionTest.h"
+
+namespace android {
+
+class MirrorLayerTest : public LayerTransactionTest {
+protected:
+    virtual void SetUp() {
+        LayerTransactionTest::SetUp();
+        ASSERT_EQ(NO_ERROR, mClient->initCheck());
+
+        const auto display = SurfaceComposerClient::getInternalDisplayToken();
+        ASSERT_FALSE(display == nullptr);
+
+        mParentLayer = createColorLayer("Parent layer", Color::RED);
+        mChildLayer = createColorLayer("Child layer", Color::GREEN, mParentLayer.get());
+        asTransaction([&](Transaction& t) {
+            t.setDisplayLayerStack(display, 0);
+            t.setLayer(mParentLayer, INT32_MAX - 2).show(mParentLayer);
+            t.setCrop_legacy(mChildLayer, Rect(0, 0, 400, 400)).show(mChildLayer);
+            t.setPosition(mChildLayer, 50, 50);
+            t.setFlags(mParentLayer, layer_state_t::eLayerOpaque, layer_state_t::eLayerOpaque);
+            t.setFlags(mChildLayer, layer_state_t::eLayerOpaque, layer_state_t::eLayerOpaque);
+        });
+    }
+
+    virtual void TearDown() {
+        LayerTransactionTest::TearDown();
+        mParentLayer = 0;
+        mChildLayer = 0;
+    }
+
+    sp<SurfaceControl> mParentLayer;
+    sp<SurfaceControl> mChildLayer;
+};
+
+TEST_F(MirrorLayerTest, MirrorColorLayer) {
+    sp<SurfaceControl> grandchild =
+            createColorLayer("Grandchild layer", Color::BLUE, mChildLayer.get());
+    Transaction()
+            .setFlags(grandchild, layer_state_t::eLayerOpaque, layer_state_t::eLayerOpaque)
+            .setCrop_legacy(grandchild, Rect(0, 0, 200, 200))
+            .show(grandchild)
+            .apply();
+
+    // Mirror mChildLayer
+    sp<SurfaceControl> mirrorLayer = mClient->mirrorSurface(mChildLayer.get());
+    ASSERT_NE(mirrorLayer, nullptr);
+
+    // Add mirrorLayer as child of mParentLayer so it's shown on the display
+    Transaction()
+            .reparent(mirrorLayer, mParentLayer->getHandle())
+            .setPosition(mirrorLayer, 500, 500)
+            .show(mirrorLayer)
+            .apply();
+
+    {
+        SCOPED_TRACE("Initial Mirror");
+        auto shot = screenshot();
+        // Grandchild mirror
+        shot->expectColor(Rect(550, 550, 750, 750), Color::BLUE);
+        // Child mirror
+        shot->expectColor(Rect(750, 750, 950, 950), Color::GREEN);
+    }
+
+    // Set color to white on grandchild layer.
+    Transaction().setColor(grandchild, half3{1, 1, 1}).apply();
+    {
+        SCOPED_TRACE("Updated Grandchild Layer Color");
+        auto shot = screenshot();
+        // Grandchild mirror
+        shot->expectColor(Rect(550, 550, 750, 750), Color::WHITE);
+        // Child mirror
+        shot->expectColor(Rect(750, 750, 950, 950), Color::GREEN);
+    }
+
+    // Set color to black on child layer.
+    Transaction().setColor(mChildLayer, half3{0, 0, 0}).apply();
+    {
+        SCOPED_TRACE("Updated Child Layer Color");
+        auto shot = screenshot();
+        // Grandchild mirror
+        shot->expectColor(Rect(550, 550, 750, 750), Color::WHITE);
+        // Child mirror
+        shot->expectColor(Rect(750, 750, 950, 950), Color::BLACK);
+    }
+
+    // Remove grandchild layer
+    Transaction().reparent(grandchild, nullptr).apply();
+    {
+        SCOPED_TRACE("Removed Grandchild Layer");
+        auto shot = screenshot();
+        // Grandchild mirror
+        shot->expectColor(Rect(550, 550, 750, 750), Color::BLACK);
+        // Child mirror
+        shot->expectColor(Rect(750, 750, 950, 950), Color::BLACK);
+    }
+
+    // Remove child layer
+    Transaction().reparent(mChildLayer, nullptr).apply();
+    {
+        SCOPED_TRACE("Removed Child Layer");
+        auto shot = screenshot();
+        // Grandchild mirror
+        shot->expectColor(Rect(550, 550, 750, 750), Color::RED);
+        // Child mirror
+        shot->expectColor(Rect(750, 750, 950, 950), Color::RED);
+    }
+
+    // Add grandchild layer to offscreen layer
+    Transaction().reparent(grandchild, mChildLayer->getHandle()).apply();
+    {
+        SCOPED_TRACE("Added Grandchild Layer");
+        auto shot = screenshot();
+        // Grandchild mirror
+        shot->expectColor(Rect(550, 550, 750, 750), Color::RED);
+        // Child mirror
+        shot->expectColor(Rect(750, 750, 950, 950), Color::RED);
+    }
+
+    // Add child layer
+    Transaction().reparent(mChildLayer, mParentLayer->getHandle()).apply();
+    {
+        SCOPED_TRACE("Added Child Layer");
+        auto shot = screenshot();
+        // Grandchild mirror
+        shot->expectColor(Rect(550, 550, 750, 750), Color::WHITE);
+        // Child mirror
+        shot->expectColor(Rect(750, 750, 950, 950), Color::BLACK);
+    }
+}
+
+TEST_F(MirrorLayerTest, MirrorBufferLayer) {
+    sp<SurfaceControl> bufferQueueLayer =
+            createLayer("BufferQueueLayer", 200, 200, 0, mChildLayer.get());
+    fillBufferQueueLayerColor(bufferQueueLayer, Color::BLUE, 200, 200);
+    Transaction().show(bufferQueueLayer).apply();
+
+    sp<SurfaceControl> mirrorLayer = mClient->mirrorSurface(mChildLayer.get());
+    Transaction()
+            .reparent(mirrorLayer, mParentLayer->getHandle())
+            .setPosition(mirrorLayer, 500, 500)
+            .show(mirrorLayer)
+            .apply();
+
+    {
+        SCOPED_TRACE("Initial Mirror BufferQueueLayer");
+        auto shot = screenshot();
+        // Buffer mirror
+        shot->expectColor(Rect(550, 550, 750, 750), Color::BLUE);
+        // Child mirror
+        shot->expectColor(Rect(750, 750, 950, 950), Color::GREEN);
+    }
+
+    fillBufferQueueLayerColor(bufferQueueLayer, Color::WHITE, 200, 200);
+    {
+        SCOPED_TRACE("Update BufferQueueLayer");
+        auto shot = screenshot();
+        // Buffer mirror
+        shot->expectColor(Rect(550, 550, 750, 750), Color::WHITE);
+        // Child mirror
+        shot->expectColor(Rect(750, 750, 950, 950), Color::GREEN);
+    }
+
+    Transaction().reparent(bufferQueueLayer, nullptr).apply();
+    {
+        SCOPED_TRACE("Removed BufferQueueLayer");
+        auto shot = screenshot();
+        // Buffer mirror
+        shot->expectColor(Rect(550, 550, 750, 750), Color::GREEN);
+        // Child mirror
+        shot->expectColor(Rect(750, 750, 950, 950), Color::GREEN);
+    }
+
+    sp<SurfaceControl> bufferStateLayer =
+            createLayer("BufferStateLayer", 200, 200, ISurfaceComposerClient::eFXSurfaceBufferState,
+                        mChildLayer.get());
+    fillBufferStateLayerColor(bufferStateLayer, Color::BLUE, 200, 200);
+    Transaction().setFrame(bufferStateLayer, Rect(0, 0, 200, 200)).show(bufferStateLayer).apply();
+
+    {
+        SCOPED_TRACE("Initial Mirror BufferStateLayer");
+        auto shot = screenshot();
+        // Buffer mirror
+        shot->expectColor(Rect(550, 550, 750, 750), Color::BLUE);
+        // Child mirror
+        shot->expectColor(Rect(750, 750, 950, 950), Color::GREEN);
+    }
+
+    fillBufferStateLayerColor(bufferStateLayer, Color::WHITE, 200, 200);
+    {
+        SCOPED_TRACE("Update BufferStateLayer");
+        auto shot = screenshot();
+        // Buffer mirror
+        shot->expectColor(Rect(550, 550, 750, 750), Color::WHITE);
+        // Child mirror
+        shot->expectColor(Rect(750, 750, 950, 950), Color::GREEN);
+    }
+
+    Transaction().reparent(bufferStateLayer, nullptr).apply();
+    {
+        SCOPED_TRACE("Removed BufferStateLayer");
+        auto shot = screenshot();
+        // Buffer mirror
+        shot->expectColor(Rect(550, 550, 750, 750), Color::GREEN);
+        // Child mirror
+        shot->expectColor(Rect(750, 750, 950, 950), Color::GREEN);
+    }
+}
+
+} // namespace android