diff --git a/services/surfaceflinger/tests/unittests/Android.bp b/services/surfaceflinger/tests/unittests/Android.bp
index 6151466..be3a918 100644
--- a/services/surfaceflinger/tests/unittests/Android.bp
+++ b/services/surfaceflinger/tests/unittests/Android.bp
@@ -21,6 +21,7 @@
         ":libsurfaceflinger_sources",
         "DisplayTransactionTest.cpp",
         "MockComposer.cpp",
+        "MockRenderEngine.cpp",
     ],
     static_libs: [
         "libgmock",
diff --git a/services/surfaceflinger/tests/unittests/MockRenderEngine.cpp b/services/surfaceflinger/tests/unittests/MockRenderEngine.cpp
new file mode 100644
index 0000000..e69f4cf
--- /dev/null
+++ b/services/surfaceflinger/tests/unittests/MockRenderEngine.cpp
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2018 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 "MockRenderEngine.h"
+
+namespace android {
+namespace RE {
+namespace mock {
+
+// Explicit default instantiation is recommended.
+RenderEngine::RenderEngine() = default;
+RenderEngine::~RenderEngine() = default;
+
+Surface::Surface() = default;
+Surface::~Surface() = default;
+
+Image::Image() = default;
+Image::~Image() = default;
+
+} // namespace mock
+} // namespace RE
+} // namespace android
diff --git a/services/surfaceflinger/tests/unittests/MockRenderEngine.h b/services/surfaceflinger/tests/unittests/MockRenderEngine.h
new file mode 100644
index 0000000..aefbfcf
--- /dev/null
+++ b/services/surfaceflinger/tests/unittests/MockRenderEngine.h
@@ -0,0 +1,108 @@
+/*
+ * Copyright (C) 2018 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.
+ */
+
+#pragma once
+
+#include <gmock/gmock.h>
+
+#include "RenderEngine/Image.h"
+#include "RenderEngine/Mesh.h"
+#include "RenderEngine/RenderEngine.h"
+#include "RenderEngine/Surface.h"
+#include "RenderEngine/Texture.h"
+
+namespace android {
+namespace RE {
+namespace mock {
+
+class RenderEngine : public RE::RenderEngine {
+public:
+    RenderEngine();
+    ~RenderEngine() override;
+
+    MOCK_METHOD0(createSurface, std::unique_ptr<RE::Surface>());
+    MOCK_METHOD0(createImage, std::unique_ptr<RE::Image>());
+    MOCK_CONST_METHOD0(primeCache, void());
+    MOCK_METHOD1(dump, void(String8&));
+    MOCK_CONST_METHOD0(supportsImageCrop, bool());
+    MOCK_CONST_METHOD0(isCurrent, bool());
+    MOCK_METHOD1(setCurrentSurface, bool(const RE::Surface&));
+    MOCK_METHOD0(resetCurrentSurface, void());
+    MOCK_METHOD0(flush, base::unique_fd());
+    MOCK_METHOD0(finish, bool());
+    MOCK_METHOD1(waitFence, bool(base::unique_fd*));
+    bool waitFence(base::unique_fd fd) override { return waitFence(&fd); };
+    MOCK_METHOD4(clearWithColor, void(float, float, float, float));
+    MOCK_METHOD6(fillRegionWithColor, void(const Region&, uint32_t, float, float, float, float));
+    MOCK_METHOD4(setScissor, void(uint32_t, uint32_t, uint32_t, uint32_t));
+    MOCK_METHOD0(disableScissor, void());
+    MOCK_METHOD2(genTextures, void(size_t, uint32_t*));
+    MOCK_METHOD2(deleteTextures, void(size_t, uint32_t const*));
+    MOCK_METHOD2(bindExternalTextureImage, void(uint32_t, const RE::Image&));
+    MOCK_METHOD5(readPixels, void(size_t, size_t, size_t, size_t, uint32_t*));
+    MOCK_CONST_METHOD0(checkErrors, void());
+    MOCK_METHOD6(setViewportAndProjection,
+                 void(size_t, size_t, Rect, size_t, bool, Transform::orientation_flags));
+    MOCK_METHOD4(setupLayerBlending, void(bool, bool, bool, const half4&));
+    MOCK_METHOD1(setColorMode, void(android_color_mode));
+    MOCK_METHOD1(setSourceDataSpace, void(android_dataspace));
+    MOCK_METHOD1(setSourceY410BT2020, void(bool));
+    MOCK_METHOD1(setWideColor, void(bool));
+    MOCK_METHOD0(usesWideColor, bool());
+    MOCK_METHOD1(setupLayerTexturing, void(const Texture&));
+    MOCK_METHOD0(setupLayerBlackedOut, void());
+    MOCK_METHOD4(setupFillWithColor, void(float, float, float, float));
+    MOCK_METHOD1(setupColorTransform, mat4(const mat4&));
+    MOCK_METHOD0(disableTexturing, void());
+    MOCK_METHOD0(disableBlending, void());
+    MOCK_METHOD2(bindNativeBufferAsFrameBuffer,
+                 void(ANativeWindowBuffer*, RE::BindNativeBufferAsFramebuffer*));
+    MOCK_METHOD1(unbindNativeBufferAsFrameBuffer, void(RE::BindNativeBufferAsFramebuffer*));
+    MOCK_METHOD1(drawMesh, void(const Mesh&));
+    MOCK_CONST_METHOD0(getMaxTextureSize, size_t());
+    MOCK_CONST_METHOD0(getMaxViewportDims, size_t());
+};
+
+class Surface : public RE::Surface {
+public:
+    Surface();
+    ~Surface() override;
+
+    MOCK_METHOD1(setCritical, void(bool));
+    MOCK_METHOD1(setAsync, void(bool));
+    MOCK_METHOD1(setNativeWindow, void(ANativeWindow*));
+    MOCK_CONST_METHOD0(swapBuffers, void());
+    MOCK_CONST_METHOD0(queryRedSize, int32_t());
+    MOCK_CONST_METHOD0(queryGreenSize, int32_t());
+    MOCK_CONST_METHOD0(queryBlueSize, int32_t());
+    MOCK_CONST_METHOD0(queryAlphaSize, int32_t());
+    MOCK_CONST_METHOD0(queryWidth, int32_t());
+    MOCK_CONST_METHOD0(queryHeight, int32_t());
+};
+
+class Image : public RE::Image {
+public:
+    Image();
+    ~Image() override;
+
+    MOCK_METHOD4(setNativeWindowBuffer,
+                 bool(ANativeWindowBuffer* buffer, bool isProtected, int32_t cropWidth,
+                      int32_t cropHeight));
+};
+
+} // namespace mock
+} // namespace RE
+} // namespace android