1 files changed, 174 insertions, 0 deletions
diff --git a/cmds/statsd/tests/utils/MultiConditionTrigger_test.cpp b/cmds/statsd/tests/utils/MultiConditionTrigger_test.cpp
new file mode 100644
index 000000000000..32cecd3b9dbc
--- /dev/null
+++ b/cmds/statsd/tests/utils/MultiConditionTrigger_test.cpp
@@ -0,0 +1,174 @@
+/*
+ * Copyright (C) 2020 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 "utils/MultiConditionTrigger.h"
+
+#include <gtest/gtest.h>
+
+#include <chrono>
+#include <set>
+#include <thread>
+#include <vector>
+
+#ifdef __ANDROID__
+
+using namespace std;
+using std::this_thread::sleep_for;
+
+namespace android {
+namespace os {
+namespace statsd {
+
+TEST(MultiConditionTrigger, TestMultipleConditions) {
+    int numConditions = 5;
+    string t1 = "t1", t2 = "t2", t3 = "t3", t4 = "t4", t5 = "t5";
+    set<string> conditionNames = {t1, t2, t3, t4, t5};
+
+    mutex lock;
+    condition_variable cv;
+    bool triggerCalled = false;
+
+    // Mark done as true and notify in the done.
+    MultiConditionTrigger trigger(conditionNames, [&lock, &cv, &triggerCalled] {
+        {
+            lock_guard lg(lock);
+            triggerCalled = true;
+        }
+        cv.notify_all();
+    });
+
+    vector<thread> threads;
+    vector<int> done(numConditions, 0);
+
+    int i = 0;
+    for (const string& conditionName : conditionNames) {
+        threads.emplace_back([&done, &conditionName, &trigger, i] {
+            sleep_for(chrono::milliseconds(3));
+            done[i] = 1;
+            trigger.markComplete(conditionName);
+        });
+        i++;
+    }
+
+    unique_lock<mutex> unique_lk(lock);
+    cv.wait(unique_lk, [&triggerCalled] {
+        return triggerCalled;
+    });
+
+    for (i = 0; i < numConditions; i++) {
+        EXPECT_EQ(done[i], 1);
+    }
+
+    for (i = 0; i < numConditions; i++) {
+        threads[i].join();
+    }
+}
+
+TEST(MultiConditionTrigger, TestNoConditions) {
+    mutex lock;
+    condition_variable cv;
+    bool triggerCalled = false;
+
+    MultiConditionTrigger trigger({}, [&lock, &cv, &triggerCalled] {
+        {
+            lock_guard lg(lock);
+            triggerCalled = true;
+        }
+        cv.notify_all();
+    });
+
+    unique_lock<mutex> unique_lk(lock);
+    cv.wait(unique_lk, [&triggerCalled] { return triggerCalled; });
+    EXPECT_TRUE(triggerCalled);
+    // Ensure that trigger occurs immediately if no events need to be completed.
+}
+
+TEST(MultiConditionTrigger, TestMarkCompleteCalledBySameCondition) {
+    string t1 = "t1", t2 = "t2";
+    set<string> conditionNames = {t1, t2};
+
+    mutex lock;
+    condition_variable cv;
+    bool triggerCalled = false;
+
+    MultiConditionTrigger trigger(conditionNames, [&lock, &cv, &triggerCalled] {
+        {
+            lock_guard lg(lock);
+            triggerCalled = true;
+        }
+        cv.notify_all();
+    });
+
+    trigger.markComplete(t1);
+    trigger.markComplete(t1);
+
+    // Ensure that the trigger still hasn't fired.
+    {
+        lock_guard lg(lock);
+        EXPECT_FALSE(triggerCalled);
+    }
+
+    trigger.markComplete(t2);
+    unique_lock<mutex> unique_lk(lock);
+    cv.wait(unique_lk, [&triggerCalled] { return triggerCalled; });
+    EXPECT_TRUE(triggerCalled);
+}
+
+TEST(MultiConditionTrigger, TestTriggerOnlyCalledOnce) {
+    string t1 = "t1";
+    set<string> conditionNames = {t1};
+
+    mutex lock;
+    condition_variable cv;
+    bool triggerCalled = false;
+    int triggerCount = 0;
+
+    MultiConditionTrigger trigger(conditionNames, [&lock, &cv, &triggerCalled, &triggerCount] {
+        {
+            lock_guard lg(lock);
+            triggerCount++;
+            triggerCalled = true;
+        }
+        cv.notify_all();
+    });
+
+    trigger.markComplete(t1);
+
+    // Ensure that the trigger fired.
+    {
+        unique_lock<mutex> unique_lk(lock);
+        cv.wait(unique_lk, [&triggerCalled] { return triggerCalled; });
+        EXPECT_TRUE(triggerCalled);
+        EXPECT_EQ(triggerCount, 1);
+        triggerCalled = false;
+    }
+
+    trigger.markComplete(t1);
+
+    // Ensure that the trigger does not fire again.
+    {
+        unique_lock<mutex> unique_lk(lock);
+        cv.wait_for(unique_lk, chrono::milliseconds(5), [&triggerCalled] { return triggerCalled; });
+        EXPECT_FALSE(triggerCalled);
+        EXPECT_EQ(triggerCount, 1);
+    }
+}
+
+}  // namespace statsd
+}  // namespace os
+}  // namespace android
+#else
+GTEST_LOG_(INFO) << "This test does nothing.\n";
+#endif