audiopolicymanager_tests: add execution tracing

Add Started / Finished log entries for each test execution.

Flag: EXEMPT bugfix
Bug: 360937480
Test: atest audiopolicy_tests
Merged-In: Ib80459b1379e5bbe3446feddd2ae2a922345f1ff
Change-Id: Ib80459b1379e5bbe3446feddd2ae2a922345f1ff
diff --git a/services/audiopolicy/tests/Android.bp b/services/audiopolicy/tests/Android.bp
index c600fb6..154b063 100644
--- a/services/audiopolicy/tests/Android.bp
+++ b/services/audiopolicy/tests/Android.bp
@@ -53,7 +53,10 @@
         "libaudiopolicymanager_interface_headers",
     ],
 
-    srcs: ["audiopolicymanager_tests.cpp"],
+    srcs: [
+        "audiopolicymanager_tests.cpp",
+        "test_execution_tracer.cpp",
+    ],
 
     data: [":audiopolicytest_configuration_files"],
 
diff --git a/services/audiopolicy/tests/audiopolicymanager_tests.cpp b/services/audiopolicy/tests/audiopolicymanager_tests.cpp
index 5278b73..5402bfe 100644
--- a/services/audiopolicy/tests/audiopolicymanager_tests.cpp
+++ b/services/audiopolicy/tests/audiopolicymanager_tests.cpp
@@ -44,6 +44,7 @@
 #include "AudioPolicyManagerTestClient.h"
 #include "AudioPolicyTestClient.h"
 #include "AudioPolicyTestManager.h"
+#include "test_execution_tracer.h"
 
 using namespace android;
 using testing::UnorderedElementsAre;
@@ -4145,3 +4146,9 @@
         testing::Values(AUDIO_USAGE_NOTIFICATION_TELEPHONY_RINGTONE,
                         AUDIO_USAGE_ALARM)
 );
+
+int main(int argc, char** argv) {
+    ::testing::InitGoogleTest(&argc, argv);
+    ::testing::UnitTest::GetInstance()->listeners().Append(new TestExecutionTracer());
+    return RUN_ALL_TESTS();
+}
diff --git a/services/audiopolicy/tests/test_execution_tracer.cpp b/services/audiopolicy/tests/test_execution_tracer.cpp
new file mode 100644
index 0000000..09de4a1
--- /dev/null
+++ b/services/audiopolicy/tests/test_execution_tracer.cpp
@@ -0,0 +1,43 @@
+/*
+ * 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.
+ */
+
+#define LOG_TAG "TestExecutionTracer"
+
+#include "test_execution_tracer.h"
+
+#include <android-base/logging.h>
+
+void TestExecutionTracer::OnTestStart(const ::testing::TestInfo& test_info) {
+    TraceTestState("Started", test_info);
+}
+
+void TestExecutionTracer::OnTestEnd(const ::testing::TestInfo& test_info) {
+    TraceTestState("Finished", test_info);
+}
+
+void TestExecutionTracer::OnTestPartResult(const ::testing::TestPartResult& result) {
+    if (result.failed()) {
+        LOG(ERROR) << result;
+    } else {
+        LOG(INFO) << result;
+    }
+}
+
+// static
+void TestExecutionTracer::TraceTestState(const std::string& state,
+                                         const ::testing::TestInfo& test_info) {
+    LOG(INFO) << state << " " << test_info.test_suite_name() << "::" << test_info.name();
+}
diff --git a/services/audiopolicy/tests/test_execution_tracer.h b/services/audiopolicy/tests/test_execution_tracer.h
new file mode 100644
index 0000000..9031aaf
--- /dev/null
+++ b/services/audiopolicy/tests/test_execution_tracer.h
@@ -0,0 +1,29 @@
+/*
+ * 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.
+ */
+
+#pragma once
+
+#include <gtest/gtest.h>
+
+class TestExecutionTracer : public ::testing::EmptyTestEventListener {
+  public:
+    void OnTestStart(const ::testing::TestInfo& test_info) override;
+    void OnTestEnd(const ::testing::TestInfo& test_info) override;
+    void OnTestPartResult(const ::testing::TestPartResult& result) override;
+
+  private:
+    static void TraceTestState(const std::string& state, const ::testing::TestInfo& test_info);
+};