Add a simple one shot and repeating timer API for Mojo.js.

gin/modules/timer_unittest.cc

Index: gin/modules/timer_unittest.cc
diff --git a/gin/modules/timer_unittest.cc b/gin/modules/timer_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..9fafbff663b50af61394bc3ced4c261e3433affb
--- /dev/null
+++ b/gin/modules/timer_unittest.cc
@@ -0,0 +1,129 @@
+// Copyright (c) 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "gin/modules/timer.h"
+
+#include "base/message_loop/message_loop.h"
+#include "gin/handle.h"
+#include "gin/object_template_builder.h"
+#include "gin/public/isolate_holder.h"
+#include "gin/runner.h"
+#include "gin/test/v8_test.h"
+#include "gin/try_catch.h"
+#include "gin/wrappable.h"
+#include "v8/include/v8.h"
+
+namespace gin {
+
+namespace {
+
+class Result : public Wrappable<Result> {
+ public:
+  static WrapperInfo kWrapperInfo;
+  static Handle<Result> Create(v8::Isolate* isolate) {
+    return CreateHandle(isolate, new Result());
+  }
+
+  int count() const { LOG(ERROR) << "returning " << count_; return count_; }
+  void set_count(int count) { count_ = count; }
+
+  void print(const std::string& val) {
+    LOG(ERROR) << val;
+  }
+
+  void quit() {
+    base::MessageLoop::current()->Quit();
+  }
+
+ private:
+  Result() : count_(0) {
+  }
+
+  virtual ~Result() {
+  }
+
+  virtual ObjectTemplateBuilder GetObjectTemplateBuilder(
+      v8::Isolate* isolate) OVERRIDE {
+    return Wrappable<Result>::GetObjectTemplateBuilder(isolate)
+        .SetProperty("count", &Result::count, &Result::set_count)
+        .SetMethod("quit", &Result::quit)
+        .SetMethod("print", &Result::print);
+  }
+
+  int count_;
+};
+
+WrapperInfo Result::kWrapperInfo = { gin::kEmbedderNativeGin };
+
+}  // namespace
+
+typedef V8Test TimerUnittest;
+
+TEST_F(TimerUnittest, OneShot) {
+  v8::Isolate* isolate = instance_->isolate();
+
+  RunnerDelegate delegate;
+  Runner runner(&delegate, isolate);
+  Runner::Scope scope(&runner);
+
+  Handle<TimerModule> timer_module = TimerModule::Create(isolate);
+  Handle<Result> result = Result::Create(isolate);
+
+  EXPECT_FALSE(runner.global().IsEmpty());
+  runner.global()->Set(StringToV8(isolate, "timer"),
+                       timer_module->GetWrapper(isolate));
+  runner.global()->Set(StringToV8(isolate, "result"),
+                       result->GetWrapper(isolate));
+
+  std::string source =
+     "timer.createOneShot(100, function() {"
+     "  result.count++;"
+     "  result.quit();"
+     "});";
+
+  base::MessageLoop loop(base::MessageLoop::TYPE_DEFAULT);
+  runner.Run(source, "script");
+  EXPECT_EQ(0, result->count());
+
+  loop.Run();
+  loop.RunUntilIdle();
+
+  EXPECT_EQ(1, result->count());
+}
+
+TEST_F(TimerUnittest, Repeating) {
+  v8::Isolate* isolate = instance_->isolate();
+
+  RunnerDelegate delegate;
+  Runner runner(&delegate, isolate);
+  Runner::Scope scope(&runner);
+
+  Handle<TimerModule> timer_module = TimerModule::Create(isolate);
+  Handle<Result> result = Result::Create(isolate);
+
+  EXPECT_FALSE(runner.global().IsEmpty());
+  runner.global()->Set(StringToV8(isolate, "timer"),
+                       timer_module->GetWrapper(isolate));
+  runner.global()->Set(StringToV8(isolate, "result"),
+                       result->GetWrapper(isolate));
+
+  // TODO(aa): Cannot do: if (++result.count == 3) because of v8 bug. Create
+  // test case and report.
+  std::string source =
+     "timer.createRepeating(10, function() {"
+     "  result.count++;"
+     "  if (result.count == 3) {"
+     "    result.quit();"
+     "  }"
+     "});";
+
+  base::MessageLoop loop(base::MessageLoop::TYPE_DEFAULT);
+  runner.Run(source, "script");
+  EXPECT_EQ(0, result->count());
+
+  loop.Run();
+  EXPECT_EQ(3, result->count());
+}
+
+}  // namespace gin