Implement ScriptPromise and ScriptFunction

Source/bindings/v8/ScriptPromiseTest.cpp

+/*
+ * Copyright (C) 2013 Google Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#include "bindings/v8/ScriptPromise.h"
+
+#include "bindings/v8/ScriptPromiseResolver.h"
+#include "bindings/v8/V8Binding.h"
+
+#include <gtest/gtest.h>
+#include <v8.h>
+
+
+namespace WebCore {
+
+namespace {
+
+class ScriptPromiseTest : public testing::Test {
+public:
+    ScriptPromiseTest()
+        : m_isolate(v8::Isolate::GetCurrent())
+        , m_handleScope(m_isolate)
+        , m_context(v8::Context::New(m_isolate))
+        , m_contextScope(m_context.newLocal(m_isolate))
+    {
+    }
+
+    void SetUp()
+    {
+        m_perContextData = V8PerContextData::create(m_context.newLocal(m_isolate));
+        m_perContextData->init();
+        m_resolver = ScriptPromiseResolver::create();
+        // XXX should just fix m_resolver to return a ScriptPromise?
+        m_promise.Reset(m_resolver->promise().v8Object(), m_isolate);
+    }
+
+    void TearDown()
+    {
+        m_resolver = 0;
+        m_promise.clear();
+        m_perContextData.clear();
+    }
+
+protected:
+    v8::Isolate* m_isolate;
+    v8::HandleScope m_handleScope;
+    ScopedPersistent<v8::Context> m_context;
+    v8::Context::Scope m_contextScope;
+    RefPtr<ScriptPromiseResolver> m_resolver;
+    ScriptPromise m_promise;
+    OwnPtr<V8PerContextData> m_perContextData;
+};
+
+class ThenCallback : public ScriptFunction {
+public:
+    ThenCallback() : m_resolved(false) { }
+    virtual ~ThenCallback() { }
+    virtual ScriptValue call(ScriptValue arg) OVERRIDE
+    {
+        m_resolved = true;
+        m_result = arg;
+        return arg;
+    }
+
+    ScriptValue result() const { return m_result; }
+    bool resolved() const  { return m_resolved; }
+private:
+    ScriptValue m_result;
+    bool m_resolved;
+};
+
+TEST_F(ScriptPromiseTest, Then)
+{
+    EXPECT_TRUE(m_resolver->isPending());
+
+    RefPtr<ThenCallback> callback = adoptRef(new ThenCallback());
+    m_promise.then(callback.get(), 0);
+    EXPECT_FALSE(callback->resolved());
+    EXPECT_TRUE(callback->result().hasNoValue());
+
+    // XXX we can't actually guarantee this is ready until the next turn
+    // of task loop.
+    m_resolver->resolve(ScriptValue(v8::Integer::New(3)));
+    EXPECT_TRUE(callback->resolved());
+    EXPECT_TRUE(callback->result().v8Value()->IsNumber());
+}
+
+} // namespace
+
+} // namespace WebCore