diff --git a/services/surfaceflinger/tests/Transaction_test.cpp b/services/surfaceflinger/tests/Transaction_test.cpp
index dcde512..3ae85a9 100644
--- a/services/surfaceflinger/tests/Transaction_test.cpp
+++ b/services/surfaceflinger/tests/Transaction_test.cpp
@@ -249,4 +249,111 @@
     }
 }
 
+TEST_F(LayerUpdateTest, LayerCropWorks) {
+    sp<ScreenCapture> sc;
+    {
+        SCOPED_TRACE("before crop");
+        ScreenCapture::captureScreen(&sc);
+        sc->checkPixel( 24,  24,  63,  63, 195);
+        sc->checkPixel( 75,  75, 195,  63,  63);
+        sc->checkPixel(145, 145,  63,  63, 195);
+    }
+
+    SurfaceComposerClient::openGlobalTransaction();
+    Rect cropRect(16, 16, 32, 32);
+    ASSERT_EQ(NO_ERROR, mFGSurfaceControl->setCrop(cropRect));
+    SurfaceComposerClient::closeGlobalTransaction(true);
+    {
+        // This should crop the foreground surface.
+        SCOPED_TRACE("after crop");
+        ScreenCapture::captureScreen(&sc);
+        sc->checkPixel( 24,  24,  63,  63, 195);
+        sc->checkPixel( 75,  75,  63,  63, 195);
+        sc->checkPixel( 95,  80, 195,  63,  63);
+        sc->checkPixel( 80,  95, 195,  63,  63);
+        sc->checkPixel( 96,  96,  63,  63, 195);
+    }
+}
+
+TEST_F(LayerUpdateTest, LayerSetLayerWorks) {
+    sp<ScreenCapture> sc;
+    {
+        SCOPED_TRACE("before setLayer");
+        ScreenCapture::captureScreen(&sc);
+        sc->checkPixel( 24,  24,  63,  63, 195);
+        sc->checkPixel( 75,  75, 195,  63,  63);
+        sc->checkPixel(145, 145,  63,  63, 195);
+    }
+
+    SurfaceComposerClient::openGlobalTransaction();
+    ASSERT_EQ(NO_ERROR, mFGSurfaceControl->setLayer(INT_MAX - 3));
+    SurfaceComposerClient::closeGlobalTransaction(true);
+    {
+        // This should hide the foreground surface beneath the background.
+        SCOPED_TRACE("after setLayer");
+        ScreenCapture::captureScreen(&sc);
+        sc->checkPixel( 24,  24,  63,  63, 195);
+        sc->checkPixel( 75,  75,  63,  63, 195);
+        sc->checkPixel(145, 145,  63,  63, 195);
+    }
+}
+
+TEST_F(LayerUpdateTest, LayerShowHideWorks) {
+    sp<ScreenCapture> sc;
+    {
+        SCOPED_TRACE("before hide");
+        ScreenCapture::captureScreen(&sc);
+        sc->checkPixel( 24,  24,  63,  63, 195);
+        sc->checkPixel( 75,  75, 195,  63,  63);
+        sc->checkPixel(145, 145,  63,  63, 195);
+    }
+
+    SurfaceComposerClient::openGlobalTransaction();
+    ASSERT_EQ(NO_ERROR, mFGSurfaceControl->hide());
+    SurfaceComposerClient::closeGlobalTransaction(true);
+    {
+        // This should hide the foreground surface.
+        SCOPED_TRACE("after hide, before show");
+        ScreenCapture::captureScreen(&sc);
+        sc->checkPixel( 24,  24,  63,  63, 195);
+        sc->checkPixel( 75,  75,  63,  63, 195);
+        sc->checkPixel(145, 145,  63,  63, 195);
+    }
+
+    SurfaceComposerClient::openGlobalTransaction();
+    ASSERT_EQ(NO_ERROR, mFGSurfaceControl->show());
+    SurfaceComposerClient::closeGlobalTransaction(true);
+    {
+        // This should show the foreground surface.
+        SCOPED_TRACE("after show");
+        ScreenCapture::captureScreen(&sc);
+        sc->checkPixel( 24,  24,  63,  63, 195);
+        sc->checkPixel( 75,  75, 195,  63,  63);
+        sc->checkPixel(145, 145,  63,  63, 195);
+    }
+}
+
+TEST_F(LayerUpdateTest, LayerSetAlphaWorks) {
+    sp<ScreenCapture> sc;
+    {
+        SCOPED_TRACE("before setAlpha");
+        ScreenCapture::captureScreen(&sc);
+        sc->checkPixel( 24,  24,  63,  63, 195);
+        sc->checkPixel( 75,  75, 195,  63,  63);
+        sc->checkPixel(145, 145,  63,  63, 195);
+    }
+
+    SurfaceComposerClient::openGlobalTransaction();
+    ASSERT_EQ(NO_ERROR, mFGSurfaceControl->setAlpha(0.75f));
+    SurfaceComposerClient::closeGlobalTransaction(true);
+    {
+        // This should set foreground to be 75% opaque.
+        SCOPED_TRACE("after setAlpha");
+        ScreenCapture::captureScreen(&sc);
+        sc->checkPixel( 24,  24,  63,  63, 195);
+        sc->checkPixel( 75,  75, 162,  63,  96);
+        sc->checkPixel(145, 145,  63,  63, 195);
+    }
+}
+
 }
diff --git a/services/surfaceflinger/tests/resize/Android.mk b/services/surfaceflinger/tests/resize/Android.mk
deleted file mode 100644
index d81679e..0000000
--- a/services/surfaceflinger/tests/resize/Android.mk
+++ /dev/null
@@ -1,17 +0,0 @@
-LOCAL_PATH:= $(call my-dir)
-include $(CLEAR_VARS)
-
-LOCAL_SRC_FILES:= \
-	resize.cpp
-
-LOCAL_SHARED_LIBRARIES := \
-	libcutils \
-	libutils \
-    libui \
-    libgui
-
-LOCAL_MODULE:= test-resize
-
-LOCAL_MODULE_TAGS := tests
-
-include $(BUILD_EXECUTABLE)
diff --git a/services/surfaceflinger/tests/resize/resize.cpp b/services/surfaceflinger/tests/resize/resize.cpp
deleted file mode 100644
index 8b051e8..0000000
--- a/services/surfaceflinger/tests/resize/resize.cpp
+++ /dev/null
@@ -1,68 +0,0 @@
-/*
- * Copyright (C) 2010 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 <cutils/memory.h>
-
-#include <utils/Log.h>
-
-#include <binder/IPCThreadState.h>
-#include <binder/ProcessState.h>
-#include <binder/IServiceManager.h>
-
-#include <gui/Surface.h>
-#include <gui/SurfaceComposerClient.h>
-
-using namespace android;
-
-namespace android {
-
-int main(int argc, char** argv)
-{
-    // set up the thread-pool
-    sp<ProcessState> proc(ProcessState::self());
-    ProcessState::self()->startThreadPool();
-
-    // create a client to surfaceflinger
-    sp<SurfaceComposerClient> client = new SurfaceComposerClient();
-    
-    sp<SurfaceControl> surfaceControl = client->createSurface(String8("resize"),
-            160, 240, PIXEL_FORMAT_RGB_565, 0);
-
-    sp<Surface> surface = surfaceControl->getSurface();
-
-    SurfaceComposerClient::openGlobalTransaction();
-    surfaceControl->setLayer(100000);
-    SurfaceComposerClient::closeGlobalTransaction();
-
-    ANativeWindow_Buffer outBuffer;
-    surface->lock(&outBuffer, NULL);
-    ssize_t bpr = outBuffer.stride * bytesPerPixel(outBuffer.format);
-    android_memset16((uint16_t*)outBuffer.bits, 0xF800, bpr*outBuffer.height);
-    surface->unlockAndPost();
-
-    surface->lock(&outBuffer);
-    android_memset16((uint16_t*)outBuffer.bits, 0x07E0, bpr*outBuffer.height);
-    surface->unlockAndPost();
-
-    SurfaceComposerClient::openGlobalTransaction();
-    surfaceControl->setSize(320, 240);
-    SurfaceComposerClient::closeGlobalTransaction();
-
-    
-    IPCThreadState::self()->joinThreadPool();
-    
-    return 0;
-}
diff --git a/services/surfaceflinger/tests/screencap/Android.mk b/services/surfaceflinger/tests/screencap/Android.mk
deleted file mode 100644
index 5cdd1a8..0000000
--- a/services/surfaceflinger/tests/screencap/Android.mk
+++ /dev/null
@@ -1,26 +0,0 @@
-LOCAL_PATH:= $(call my-dir)
-include $(CLEAR_VARS)
-
-LOCAL_SRC_FILES:= \
-	screencap.cpp
-
-LOCAL_SHARED_LIBRARIES := \
-	libcutils \
-	libutils \
-	libbinder \
-	libskia \
-    libui \
-    libgui
-
-LOCAL_MODULE:= test-screencap
-
-LOCAL_MODULE_TAGS := tests
-
-LOCAL_C_INCLUDES += \
-	external/skia/include/core \
-	external/skia/include/effects \
-	external/skia/include/images \
-	external/skia/src/ports \
-	external/skia/include/utils
-
-include $(BUILD_EXECUTABLE)
diff --git a/services/surfaceflinger/tests/screencap/screencap.cpp b/services/surfaceflinger/tests/screencap/screencap.cpp
deleted file mode 100644
index f842fc3..0000000
--- a/services/surfaceflinger/tests/screencap/screencap.cpp
+++ /dev/null
@@ -1,64 +0,0 @@
-/*
- * Copyright (C) 2010 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 <utils/Log.h>
-
-#include <binder/IPCThreadState.h>
-#include <binder/ProcessState.h>
-#include <binder/IServiceManager.h>
-
-#include <binder/IMemory.h>
-#include <gui/ISurfaceComposer.h>
-
-#include <SkImageEncoder.h>
-#include <SkBitmap.h>
-
-using namespace android;
-
-int main(int argc, char** argv)
-{
-    if (argc != 2) {
-        printf("usage: %s path\n", argv[0]);
-        exit(0);
-    }
-
-    const String16 name("SurfaceFlinger");
-    sp<ISurfaceComposer> composer;
-    getService(name, &composer);
-
-    sp<IMemoryHeap> heap;
-    uint32_t w, h;
-    PixelFormat f;
-    sp<IBinder> display(composer->getBuiltInDisplay(ISurfaceComposer::eDisplayIdMain));
-    status_t err = composer->captureScreen(display, &heap, &w, &h, &f, 0, 0);
-    if (err != NO_ERROR) {
-        fprintf(stderr, "screen capture failed: %s\n", strerror(-err));
-        exit(0);
-    }
-
-    printf("screen capture success: w=%u, h=%u, pixels=%p\n",
-            w, h, heap->getBase());
-
-    printf("saving file as PNG in %s ...\n", argv[1]);
-
-    SkBitmap b;
-    b.setConfig(SkBitmap::kARGB_8888_Config, w, h);
-    b.setPixels(heap->getBase());
-    SkImageEncoder::EncodeFile(argv[1], b,
-            SkImageEncoder::kPNG_Type, SkImageEncoder::kDefaultQuality);
-
-    return 0;
-}
diff --git a/services/surfaceflinger/tests/transform/Android.mk b/services/surfaceflinger/tests/transform/Android.mk
deleted file mode 100644
index 6219dae..0000000
--- a/services/surfaceflinger/tests/transform/Android.mk
+++ /dev/null
@@ -1,19 +0,0 @@
-LOCAL_PATH:= $(call my-dir)
-include $(CLEAR_VARS)
-
-LOCAL_SRC_FILES:= \
-	TransformTest.cpp \
-	../../Transform.cpp
-
-LOCAL_SHARED_LIBRARIES := \
-	libcutils \
-	libutils \
-	libui \
-
-LOCAL_MODULE:= test-transform
-
-LOCAL_MODULE_TAGS := tests
-
-LOCAL_C_INCLUDES += ../..
-
-include $(BUILD_EXECUTABLE)
diff --git a/services/surfaceflinger/tests/transform/TransformTest.cpp b/services/surfaceflinger/tests/transform/TransformTest.cpp
deleted file mode 100644
index e112c4e..0000000
--- a/services/surfaceflinger/tests/transform/TransformTest.cpp
+++ /dev/null
@@ -1,45 +0,0 @@
-/*
- * Copyright (C) 2007 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 <utils/Errors.h>
-#include "../../Transform.h"
-
-using namespace android;
-
-int main(int argc, char **argv)
-{
-    Transform tr90(Transform::ROT_90);
-    Transform trFH(Transform::FLIP_H);
-    Transform trFV(Transform::FLIP_V);
-
-    Transform tr90FH(Transform::ROT_90 | Transform::FLIP_H);
-    Transform tr90FV(Transform::ROT_90 | Transform::FLIP_V);
-
-    tr90.dump("tr90");
-    trFH.dump("trFH");
-    trFV.dump("trFV");
-
-    tr90FH.dump("tr90FH");
-    tr90FV.dump("tr90FV");
-
-    (trFH*tr90).dump("trFH*tr90");
-    (trFV*tr90).dump("trFV*tr90");
-
-    (tr90*trFH).dump("tr90*trFH");
-    (tr90*trFV).dump("tr90*trFV");
-
-    return 0;
-}