libgui: add BufferQueue test infrastructure
This change adds some infrastructure for testing the BufferQueue class. It
also includes a test that tests the new check in BufferQueue::acquireBuffer
that prevents the consumer from acquiring more than one buffer beyond the max
acquired buffer count that was set.
Change-Id: I38554ad3f9a53d2ddeba7ef0deee35ec2e2f9775
diff --git a/libs/gui/tests/BufferQueue_test.cpp b/libs/gui/tests/BufferQueue_test.cpp
new file mode 100644
index 0000000..8601789
--- /dev/null
+++ b/libs/gui/tests/BufferQueue_test.cpp
@@ -0,0 +1,96 @@
+/*
+ * Copyright (C) 2012 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 "BufferQueue_test"
+//#define LOG_NDEBUG 0
+
+#include <gtest/gtest.h>
+
+#include <utils/String8.h>
+#include <utils/threads.h>
+
+#include <ui/GraphicBuffer.h>
+#include <ui/FramebufferNativeWindow.h>
+
+#include <gui/BufferQueue.h>
+
+namespace android {
+
+class BufferQueueTest : public ::testing::Test {
+protected:
+
+ BufferQueueTest() {}
+
+ virtual void SetUp() {
+ const ::testing::TestInfo* const testInfo =
+ ::testing::UnitTest::GetInstance()->current_test_info();
+ ALOGV("Begin test: %s.%s", testInfo->test_case_name(),
+ testInfo->name());
+
+ mBQ = new BufferQueue();
+ }
+
+ virtual void TearDown() {
+ mBQ.clear();
+
+ const ::testing::TestInfo* const testInfo =
+ ::testing::UnitTest::GetInstance()->current_test_info();
+ ALOGV("End test: %s.%s", testInfo->test_case_name(),
+ testInfo->name());
+ }
+
+ sp<BufferQueue> mBQ;
+};
+
+struct DummyConsumer : public BufferQueue::ConsumerListener {
+ virtual void onFrameAvailable() {}
+ virtual void onBuffersReleased() {}
+};
+
+TEST_F(BufferQueueTest, AcquireBuffer_ExceedsMaxAcquireCount_Fails) {
+ sp<DummyConsumer> dc(new DummyConsumer);
+ mBQ->consumerConnect(dc);
+ ISurfaceTexture::QueueBufferOutput qbo;
+ mBQ->connect(NATIVE_WINDOW_API_CPU, &qbo);
+ mBQ->setBufferCount(4);
+
+ int slot;
+ sp<Fence> fence;
+ sp<GraphicBuffer> buf;
+ ISurfaceTexture::QueueBufferInput qbi(0, Rect(0, 0, 1, 1),
+ NATIVE_WINDOW_SCALING_MODE_FREEZE, 0, fence);
+ BufferQueue::BufferItem item;
+
+ for (int i = 0; i < 2; i++) {
+ ASSERT_EQ(ISurfaceTexture::BUFFER_NEEDS_REALLOCATION,
+ mBQ->dequeueBuffer(&slot, fence, 1, 1, 0,
+ GRALLOC_USAGE_SW_READ_OFTEN));
+ ASSERT_EQ(OK, mBQ->requestBuffer(slot, &buf));
+ ASSERT_EQ(OK, mBQ->queueBuffer(slot, qbi, &qbo));
+ ASSERT_EQ(OK, mBQ->acquireBuffer(&item));
+ }
+
+ ASSERT_EQ(ISurfaceTexture::BUFFER_NEEDS_REALLOCATION,
+ mBQ->dequeueBuffer(&slot, fence, 1, 1, 0,
+ GRALLOC_USAGE_SW_READ_OFTEN));
+ ASSERT_EQ(OK, mBQ->requestBuffer(slot, &buf));
+ ASSERT_EQ(OK, mBQ->queueBuffer(slot, qbi, &qbo));
+
+ // Acquire the third buffer, which should fail.
+ ASSERT_EQ(INVALID_OPERATION, mBQ->acquireBuffer(&item));
+}
+
+} // namespace android