diff --git a/libs/ui/tests/Android.bp b/libs/ui/tests/Android.bp
index 6733505..b55c212 100644
--- a/libs/ui/tests/Android.bp
+++ b/libs/ui/tests/Android.bp
@@ -25,3 +25,9 @@
     shared_libs: ["libui"],
     srcs: ["colorspace_test.cpp"],
 }
+
+cc_test {
+    name: "Gralloc1Mapper_test",
+    shared_libs: ["libui", "libutils"],
+    srcs: ["Gralloc1Mapper_test.cpp"],
+}
diff --git a/libs/ui/tests/Gralloc1Mapper_test.cpp b/libs/ui/tests/Gralloc1Mapper_test.cpp
new file mode 100644
index 0000000..b7c9f0f
--- /dev/null
+++ b/libs/ui/tests/Gralloc1Mapper_test.cpp
@@ -0,0 +1,105 @@
+/*
+ * Copyright (C) 2017 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.
+ */
+
+#define LOG_TAG "Gralloc1Mapper_test"
+//#define LOG_NDEBUG 0
+
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+
+#include <ui/GraphicBuffer.h>
+#include <ui/GraphicBufferMapper.h>
+#include <utils/Errors.h>
+
+#include <gtest/gtest.h>
+
+using namespace android;
+
+class Gralloc1MapperTest : public ::testing::Test
+{
+public:
+    ~Gralloc1MapperTest() override = default;
+
+protected:
+    void SetUp() override {
+        buffer = new GraphicBuffer(4, 8, HAL_PIXEL_FORMAT_RGBA_8888, 1,
+                GRALLOC1_PRODUCER_USAGE_CPU_WRITE_OFTEN,
+                GRALLOC1_CONSUMER_USAGE_CPU_READ_OFTEN, "Gralloc1MapperTest");
+        ASSERT_NE(nullptr, buffer.get());
+
+        handle = static_cast<buffer_handle_t>(buffer->handle);
+
+        mapper = &GraphicBufferMapper::get();
+    }
+
+    sp<GraphicBuffer> buffer;
+    buffer_handle_t handle;
+    GraphicBufferMapper* mapper;
+};
+
+TEST_F(Gralloc1MapperTest, Gralloc1MapperTest_getDimensions) {
+    uint32_t width = 0;
+    uint32_t height = 0;
+    status_t err = mapper->getDimensions(handle, &width, &height);
+    ASSERT_EQ(GRALLOC1_ERROR_NONE, err);
+    EXPECT_EQ(4U, width);
+    EXPECT_EQ(8U, height);
+}
+
+TEST_F(Gralloc1MapperTest, Gralloc1MapperTest_getFormat) {
+    int32_t value = 0;
+    status_t err = mapper->getFormat(handle, &value);
+    ASSERT_EQ(GRALLOC1_ERROR_NONE, err);
+    EXPECT_EQ(HAL_PIXEL_FORMAT_RGBA_8888, value);
+}
+
+TEST_F(Gralloc1MapperTest, Gralloc1MapperTest_getLayerCount) {
+    uint32_t value = 0;
+    status_t err = mapper->getLayerCount(handle, &value);
+    if (err != GRALLOC1_ERROR_UNSUPPORTED) {
+        EXPECT_EQ(1U, value);
+    }
+}
+
+TEST_F(Gralloc1MapperTest, Gralloc1MapperTest_getProducerUsage) {
+    uint64_t value = 0;
+    status_t err = mapper->getProducerUsage(handle, &value);
+    ASSERT_EQ(GRALLOC1_ERROR_NONE, err);
+    EXPECT_EQ(GRALLOC1_PRODUCER_USAGE_CPU_WRITE_OFTEN, value);
+}
+
+TEST_F(Gralloc1MapperTest, Gralloc1MapperTest_getConsumerUsage) {
+    uint64_t value = 0;
+    status_t err = mapper->getConsumerUsage(handle, &value);
+    ASSERT_EQ(GRALLOC1_ERROR_NONE, err);
+    EXPECT_EQ(GRALLOC1_CONSUMER_USAGE_CPU_READ_OFTEN, value);
+}
+
+TEST_F(Gralloc1MapperTest, Gralloc1MapperTest_getBackingStore) {
+    uint64_t value = 0;
+    status_t err = mapper->getBackingStore(handle, &value);
+    ASSERT_EQ(GRALLOC1_ERROR_NONE, err);
+}
+
+TEST_F(Gralloc1MapperTest, Gralloc1MapperTest_getStride) {
+    uint32_t value = 0;
+    status_t err = mapper->getStride(handle, &value);
+    ASSERT_EQ(GRALLOC1_ERROR_NONE, err);
+    // The stride should be at least the width of the buffer.
+    EXPECT_LE(4U, value);
+}