Update the PushEvent to have a nullable PushMessageData

third_party/WebKit/Source/modules/push_messaging/PushMessageDataTest.cpp

+// Copyright 2016 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 "modules/push_messaging/PushMessageData.h"
+
+#include "public/platform/WebString.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace blink {
+namespace {
+
+const char kPushMessageData[] = "Push Message valid data string.";
+
+TEST(PushMessageDataTest, ValidPayload)
+{
+    // Create a WebString with the test message, then create a
+    // PushMessageData from that.
+    WebString s(blink::WebString::fromUTF8(kPushMessageData));
+    PushMessageData* data = PushMessageData::create(s);
+
+    ASSERT_NE(data, nullptr);
+    EXPECT_STREQ(kPushMessageData, data->text().utf8().data());
+}
+
+TEST(PushMessageDataTest, ValidEmptyPayload)
+{
+    // Create a WebString with a valid but empty test message, then create
+    // a PushMessageData from that.
+    WebString s("");
+    PushMessageData* data = PushMessageData::create(s);
+
+    ASSERT_NE(data, nullptr);
+    EXPECT_STREQ("", data->text().utf8().data());
+}
+
+TEST(PushMessageDataTest, NullPayload)
+{
+    // Create a PushMessageData with a null payload.
+    WebString s;
+    PushMessageData* data = PushMessageData::create(s);
+
+    EXPECT_EQ(data, nullptr);
+}
+
+} // anonymous namespace
+} // namespace blink