From 3f3fc7b7723698e44427e2a14a2f4906832800bf Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Konstantin=20K=C3=A4fer?= <mail@kkaefer.com>
Date: Wed, 28 Sep 2016 11:45:33 +0200
Subject: [test] add .test.cpp suffix to test case files

---
 test/util/async_task.test.cpp | 153 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 153 insertions(+)
 create mode 100644 test/util/async_task.test.cpp

(limited to 'test/util/async_task.test.cpp')

diff --git a/test/util/async_task.test.cpp b/test/util/async_task.test.cpp
new file mode 100644
index 0000000000..78dc79dd19
--- /dev/null
+++ b/test/util/async_task.test.cpp
@@ -0,0 +1,153 @@
+#include <mbgl/util/async_task.hpp>
+#include <mbgl/util/run_loop.hpp>
+#include <mbgl/util/thread.hpp>
+
+#include <mbgl/test/util.hpp>
+
+#include <vector>
+
+using namespace mbgl::util;
+
+namespace {
+
+class TestWorker {
+public:
+    TestWorker(AsyncTask *async_)
+        : async(async_) {}
+
+    void run() {
+        for (unsigned i = 0; i < 100000; ++i) {
+            async->send();
+        }
+    }
+
+    void runWithCallback(std::function<void()> cb) {
+        for (unsigned i = 0; i < 100000; ++i) {
+            async->send();
+        }
+
+        cb();
+    }
+
+private:
+    AsyncTask *async;
+};
+
+} // namespace
+
+TEST(AsyncTask, RequestCoalescing) {
+    RunLoop loop;
+
+    unsigned count = 0;
+    AsyncTask async([&count] { ++count; });
+
+    async.send();
+    async.send();
+    async.send();
+    async.send();
+    async.send();
+
+    loop.runOnce();
+
+    EXPECT_EQ(count, 1u);
+}
+
+TEST(AsyncTask, DestroyShouldNotRunQueue) {
+    RunLoop loop;
+
+    unsigned count = 0;
+    auto async = std::make_unique<AsyncTask>([&count] { ++count; });
+
+    async->send();
+    async.reset();
+
+    EXPECT_EQ(count, 0u);
+}
+
+TEST(AsyncTask, DestroyAfterSignaling) {
+    RunLoop loop;
+
+    // We're creating two tasks and signal both of them; the one that gets fired first destroys
+    // the other one. Make sure that the second one we destroyed doesn't fire.
+
+    std::unique_ptr<AsyncTask> task1, task2;
+
+    task1 = std::make_unique<AsyncTask>([&] {
+        task2.reset();
+        if (!task1) {
+            FAIL() << "Task was destroyed but invoked anyway";
+        }
+    });
+    task2 = std::make_unique<AsyncTask>([&] {
+        task1.reset();
+        if (!task2) {
+            FAIL() << "Task was destroyed but invoked anyway";
+        }
+    });
+
+    task1->send();
+    task2->send();
+
+    loop.runOnce();
+}
+
+TEST(AsyncTask, RequestCoalescingMultithreaded) {
+    RunLoop loop;
+
+    unsigned count = 0;
+    AsyncTask async([&count] { ++count; });
+
+    std::vector<std::unique_ptr<Thread<TestWorker>>> threads;
+    ThreadContext context = {"Test"};
+
+    unsigned numThreads = 25;
+    for (unsigned i = 0; i < numThreads; ++i) {
+        std::unique_ptr<Thread<TestWorker>> thread =
+            std::make_unique<Thread<TestWorker>>(context, &async);
+
+        thread->invoke(&TestWorker::run);
+        threads.push_back(std::move(thread));
+    }
+
+    // Join all the threads
+    threads.clear();
+
+    loop.runOnce();
+
+    EXPECT_EQ(count, 1u);
+}
+
+TEST(AsyncTask, ThreadSafety) {
+    RunLoop loop;
+
+    unsigned count = 0;
+    AsyncTask async([&count] { ++count; });
+
+    unsigned numThreads = 25;
+
+    auto callback = [&] {
+        if (!--numThreads) {
+            loop.stop();
+        }
+    };
+
+    std::vector<std::unique_ptr<Thread<TestWorker>>> threads;
+    std::vector<std::unique_ptr<mbgl::AsyncRequest>> requests;
+    ThreadContext context = {"Test"};
+
+    for (unsigned i = 0; i < numThreads; ++i) {
+        std::unique_ptr<Thread<TestWorker>> thread =
+            std::make_unique<Thread<TestWorker>>(context, &async);
+
+        requests.push_back(
+            thread->invokeWithCallback(&TestWorker::runWithCallback, callback));
+
+        threads.push_back(std::move(thread));
+    }
+
+    loop.run();
+
+    // We expect here more than 1 but 1 would also be
+    // a valid result, although very unlikely (I hope).
+    EXPECT_GT(count, 0u);
+}
-- 
cgit v1.2.1