libgui: Add a test server utility for unit tests.
This is being added to make it possible to test linkToDeath callbacks,
but may serve to be generally useful.
This is a complicated little thing. But it has to be this way.
Most of the complication comes from the fact that we want ephemeral
Binder services that we can kill at will on a per-test basis. Binder
doesn't let you do any binder stuff after you've forked, however, so we
needed an intermediary, non-binder process to kick off the binder
processes that actually run the test server.
The way this works is:
- libgui_test defaults to being a normal test, and intializes a
`TestServerHost` via fork/exec of the libgui_test binary
- The first fork runs TestServerHostMain and waits on a pipe for
commands to create servers, at which point it will fork/exec
- Each forked server creates a new ITestService service, which the
original test connects to.
BYPASS_IGBP_IGBC_API_REASON=warren buffers
Bug: 340933794
Flag: EXEMPT test
Test: test library
Change-Id: I37ee51b13a895a8b3387b7f2db92e5069158ff46
diff --git a/libs/gui/tests/TestServer_test.cpp b/libs/gui/tests/TestServer_test.cpp
new file mode 100644
index 0000000..8712988
--- /dev/null
+++ b/libs/gui/tests/TestServer_test.cpp
@@ -0,0 +1,99 @@
+/*
+ * Copyright (C) 2024 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 <gtest/gtest.h>
+
+#include <SurfaceFlingerProperties.h>
+#include <android/gui/IDisplayEventConnection.h>
+#include <android/gui/ISurfaceComposer.h>
+#include <android/hardware/configstore/1.0/ISurfaceFlingerConfigs.h>
+#include <android/hardware_buffer.h>
+#include <binder/ProcessState.h>
+#include <com_android_graphics_libgui_flags.h>
+#include <configstore/Utils.h>
+#include <gui/AidlStatusUtil.h>
+#include <gui/BufferItemConsumer.h>
+#include <gui/BufferQueue.h>
+#include <gui/CpuConsumer.h>
+#include <gui/IConsumerListener.h>
+#include <gui/IGraphicBufferConsumer.h>
+#include <gui/IGraphicBufferProducer.h>
+#include <gui/ISurfaceComposer.h>
+#include <gui/Surface.h>
+#include <gui/SurfaceComposerClient.h>
+#include <gui/SyncScreenCaptureListener.h>
+#include <private/gui/ComposerService.h>
+#include <private/gui/ComposerServiceAIDL.h>
+#include <sys/types.h>
+#include <system/window.h>
+#include <ui/BufferQueueDefs.h>
+#include <ui/DisplayMode.h>
+#include <ui/GraphicBuffer.h>
+#include <ui/Rect.h>
+#include <utils/Errors.h>
+#include <utils/String8.h>
+
+#include <cstddef>
+#include <limits>
+#include <thread>
+
+#include "binder/IInterface.h"
+#include "testserver/TestServerClient.h"
+
+namespace android {
+
+namespace {
+
+class TestServerTest : public ::testing::Test {
+protected:
+ TestServerTest() { ProcessState::self()->startThreadPool(); }
+};
+
+} // namespace
+
+TEST_F(TestServerTest, Create) {
+ EXPECT_NE(nullptr, TestServerClient::Create());
+}
+
+TEST_F(TestServerTest, CreateProducer) {
+ sp<TestServerClient> client = TestServerClient::Create();
+ EXPECT_NE(nullptr, client->CreateProducer());
+}
+
+TEST_F(TestServerTest, KillServer) {
+ class DeathWaiter : public IBinder::DeathRecipient {
+ public:
+ virtual void binderDied(const wp<IBinder>&) override { mPromise.set_value(true); }
+ std::future<bool> getFuture() { return mPromise.get_future(); }
+
+ std::promise<bool> mPromise;
+ };
+
+ sp<TestServerClient> client = TestServerClient::Create();
+ sp<IGraphicBufferProducer> producer = client->CreateProducer();
+ EXPECT_NE(nullptr, producer);
+
+ sp<DeathWaiter> deathWaiter = sp<DeathWaiter>::make();
+ EXPECT_EQ(OK, IInterface::asBinder(producer)->linkToDeath(deathWaiter));
+
+ auto deathWaiterFuture = deathWaiter->getFuture();
+ EXPECT_EQ(OK, client->Kill());
+ EXPECT_EQ(nullptr, client->CreateProducer());
+
+ EXPECT_TRUE(deathWaiterFuture.get());
+}
+
+} // namespace android