1 files changed, 59 insertions, 0 deletions
diff --git a/toolchain-extras/profile-extras-test.cpp b/toolchain-extras/profile-extras-test.cpp
new file mode 100644
index 00000000..0cc4cef8
--- /dev/null
+++ b/toolchain-extras/profile-extras-test.cpp
@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2019 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 <sys/system_properties.h>
+
+#include "profile-extras.h"
+
+static int flush_count = 0;
+
+extern "C" {
+void __gcov_flush() {
+  flush_count++;
+}
+}
+
+static const char kCoveragePropName[] = "coverage.flush";
+
+TEST(profile_extras, smoke) {
+  flush_count = 0;
+
+  ASSERT_EQ(0, flush_count);
+  kill(getpid(), GCOV_FLUSH_SIGNAL);
+  sleep(2);
+  ASSERT_EQ(1, flush_count);
+
+  // kCoveragePropName from "0" -> "1" -> "0" -> "1" should trigger two flushes.
+  // transition 1
+  __system_property_set(kCoveragePropName, "0");
+  sleep(2);
+  ASSERT_EQ(1, flush_count);
+
+  __system_property_set(kCoveragePropName, "1");
+  sleep(2);
+  ASSERT_EQ(2, flush_count);
+
+  // transition 2
+  __system_property_set(kCoveragePropName, "0");
+  sleep(2);
+  ASSERT_EQ(2, flush_count);
+
+  __system_property_set(kCoveragePropName, "1");
+  sleep(2);
+  ASSERT_EQ(3, flush_count);
+}