SF: Introduce libsurfaceflinger_unittest
This is meant to be a framework for running function-level unit tests
against the various SurfaceFlinger classes.
The point of this patch is to set up the test framework, as well as
demonstrate a pattern to be used to allow private implementation
functions to be tested.
Note that this patch configures the base surfaceflinger code to now use
ThinLTO, and enables -fwhole-program-vtables. This is done as ThinLTO
with that option will perform a devirtualization pass, turning virtual
function calls back into non-virtual function calls (and possibly even
inlining the call) when it detects that there is only one possible
implementation being called. The cost is a slight increase in build time
(similar to -O2), but is still much less than the original LTO.
Even here that LTO pass does something to the surfaceflinger binary,
reducing the file size by 4Kb.
Test: libsurfaceflinger_unittest passes on Pixel XL
Test: atest libsurfaceflinger_unittest runs the new test
Bug: None
Change-Id: I362ec1fcf1a909c4d6769710d8d8a6b0b158600d
diff --git a/services/surfaceflinger/tests/unittests/DisplayTransactionTest.cpp b/services/surfaceflinger/tests/unittests/DisplayTransactionTest.cpp
new file mode 100644
index 0000000..fc1b564
--- /dev/null
+++ b/services/surfaceflinger/tests/unittests/DisplayTransactionTest.cpp
@@ -0,0 +1,63 @@
+/*
+ * 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.
+ */
+
+#undef LOG_TAG
+#define LOG_TAG "LibSurfaceFlingerUnittests"
+
+#include <gmock/gmock.h>
+#include <gtest/gtest.h>
+
+#include <log/log.h>
+
+#include "TestableSurfaceFlinger.h"
+
+namespace android {
+namespace {
+
+class DisplayTransactionTest : public testing::Test {
+protected:
+ DisplayTransactionTest();
+ ~DisplayTransactionTest() override;
+
+ void setupComposer(int virtualDisplayCount);
+ void setupPrimaryDisplay(int width, int height);
+
+ TestableSurfaceFlinger mFlinger;
+};
+
+DisplayTransactionTest::DisplayTransactionTest() {
+ const ::testing::TestInfo* const test_info =
+ ::testing::UnitTest::GetInstance()->current_test_info();
+ ALOGD("**** Setting up for %s.%s\n", test_info->test_case_name(), test_info->name());
+}
+
+DisplayTransactionTest::~DisplayTransactionTest() {
+ const ::testing::TestInfo* const test_info =
+ ::testing::UnitTest::GetInstance()->current_test_info();
+ ALOGD("**** Tearing down after %s.%s\n", test_info->test_case_name(), test_info->name());
+}
+
+TEST_F(DisplayTransactionTest, PlaceholderTrivialTest) {
+ auto result = mFlinger.getDefaultDisplayDeviceLocked();
+ EXPECT_EQ(nullptr, result.get());
+
+ EXPECT_EQ(nullptr, mFlinger.mutableBuiltinDisplays()[0].get());
+ mFlinger.mutableBuiltinDisplays()[0] = new BBinder();
+ EXPECT_NE(nullptr, mFlinger.mutableBuiltinDisplays()[0].get());
+}
+
+} // namespace
+} // namespace android