Merge "Fix flaky recurrent timer test." into main am: d0cb2e73b2 am: 83e99ff3b1 am: b3f840a6ff am: d8ab63802a am: e993d4b849
Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2651319
Change-Id: If412439e197b7d2cfbf5570314f2e9c81e287ec2
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
diff --git a/automotive/vehicle/aidl/impl/utils/common/test/RecurrentTimerTest.cpp b/automotive/vehicle/aidl/impl/utils/common/test/RecurrentTimerTest.cpp
index 141efc1..62046f3 100644
--- a/automotive/vehicle/aidl/impl/utils/common/test/RecurrentTimerTest.cpp
+++ b/automotive/vehicle/aidl/impl/utils/common/test/RecurrentTimerTest.cpp
@@ -18,6 +18,7 @@
#include <android-base/thread_annotations.h>
#include <gtest/gtest.h>
+#include <condition_variable>
#include <chrono>
#include <memory>
@@ -28,6 +29,8 @@
namespace automotive {
namespace vehicle {
+using ::android::base::ScopedLockAssertion;
+
class RecurrentTimerTest : public testing::Test {
public:
std::shared_ptr<RecurrentTimer::Callback> getCallback(size_t token) {
@@ -35,6 +38,15 @@
std::scoped_lock<std::mutex> lockGuard(mLock);
mCallbacks.push_back(token);
+ mCond.notify_all();
+ });
+ }
+
+ bool waitForCalledCallbacks(size_t count, size_t timeoutInMs) {
+ std::unique_lock<std::mutex> uniqueLock(mLock);
+ return mCond.wait_for(uniqueLock, std::chrono::milliseconds(timeoutInMs), [this, count] {
+ ScopedLockAssertion lockAssertion(mLock);
+ return mCallbacks.size() >= count;
});
}
@@ -54,6 +66,7 @@
}
private:
+ std::condition_variable mCond;
std::mutex mLock;
std::vector<size_t> mCallbacks GUARDED_BY(mLock);
};
@@ -66,12 +79,11 @@
auto action = getCallback(0);
timer.registerTimerCallback(interval, action);
- std::this_thread::sleep_for(std::chrono::seconds(1));
+ // Should only takes 1s, use 5s as timeout to be safe.
+ ASSERT_TRUE(waitForCalledCallbacks(/* count= */ 10u, /* timeoutInMs= */ 5000))
+ << "Not enough callbacks called before timeout";
timer.unregisterTimerCallback(action);
-
- // Theoretically trigger 10 times, but check for at least 9 times to be stable.
- ASSERT_GE(getCalledCallbacks().size(), static_cast<size_t>(9));
}
TEST_F(RecurrentTimerTest, testRegisterUnregisterRegister) {
@@ -92,10 +104,11 @@
timer.registerTimerCallback(interval, action);
- std::this_thread::sleep_for(std::chrono::seconds(1));
+ // Should only takes 1s, use 5s as timeout to be safe.
+ ASSERT_TRUE(waitForCalledCallbacks(/* count= */ 10u, /* timeoutInMs= */ 5000))
+ << "Not enough callbacks called before timeout";
- // Theoretically trigger 10 times, but check for at least 9 times to be stable.
- ASSERT_GE(getCalledCallbacks().size(), static_cast<size_t>(9));
+ timer.unregisterTimerCallback(action);
}
TEST_F(RecurrentTimerTest, testDestroyTimerWithCallback) {
@@ -114,7 +127,9 @@
std::this_thread::sleep_for(std::chrono::milliseconds(200));
- ASSERT_TRUE(getCalledCallbacks().empty());
+ // Should be 0, but in rare cases there might be 1 events in the queue while the timer is
+ // being destroyed.
+ ASSERT_LE(getCalledCallbacks().size(), 1u);
}
TEST_F(RecurrentTimerTest, testRegisterMultipleCallbacks) {
@@ -132,7 +147,11 @@
auto action3 = getCallback(3);
timer.registerTimerCallback(interval3, action3);
- std::this_thread::sleep_for(std::chrono::seconds(1));
+ // In 1s, we should generate 10 + 20 + 33 = 63 events.
+ // Here we are waiting for more events to make sure we receive enough events for each actions.
+ // Use 5s as timeout to be safe.
+ ASSERT_TRUE(waitForCalledCallbacks(/* count= */ 70u, /* timeoutInMs= */ 5000))
+ << "Not enough callbacks called before timeout";
timer.unregisterTimerCallback(action1);
timer.unregisterTimerCallback(action2);
@@ -152,20 +171,18 @@
action3Count++;
}
}
- // Theoretically trigger 10 times, but check for at least 9 times to be stable.
- ASSERT_GE(action1Count, static_cast<size_t>(9));
- // Theoretically trigger 20 times, but check for at least 15 times to be stable.
- ASSERT_GE(action2Count, static_cast<size_t>(15));
- // Theoretically trigger 33 times, but check for at least 25 times to be stable.
- ASSERT_GE(action3Count, static_cast<size_t>(25));
+
+ ASSERT_GE(action1Count, static_cast<size_t>(10));
+ ASSERT_GE(action2Count, static_cast<size_t>(20));
+ ASSERT_GE(action3Count, static_cast<size_t>(33));
}
TEST_F(RecurrentTimerTest, testRegisterSameCallbackMultipleTimes) {
RecurrentTimer timer;
- // 0.02s
- int64_t interval1 = 20000000;
- // 0.01s
- int64_t interval2 = 10000000;
+ // 0.2s
+ int64_t interval1 = 200'000'000;
+ // 0.1s
+ int64_t interval2 = 100'000'000;
auto action = getCallback(0);
for (int i = 0; i < 10; i++) {
@@ -175,10 +192,9 @@
clearCalledCallbacks();
- std::this_thread::sleep_for(std::chrono::milliseconds(100));
-
- // Theoretically trigger 10 times, but check for at least 9 times to be stable.
- ASSERT_GE(getCalledCallbacks().size(), static_cast<size_t>(9));
+ // Should only takes 1s, use 5s as timeout to be safe.
+ ASSERT_TRUE(waitForCalledCallbacks(/* count= */ 10u, /* timeoutInMs= */ 5000))
+ << "Not enough callbacks called before timeout";
timer.unregisterTimerCallback(action);