Add tests for UserGestureIndicator class.

third_party/WebKit/Source/platform/UserGestureIndicatorTest.cpp

+/*

[tkent, 2016/02/10 10:08:53]

Please use the 3-line header like platform/JSONParserTest.cpp

[Andrey Kraynov, 2016/02/10 10:20:36]

Done.

+ * Copyright (C) 2016 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 "platform/UserGestureIndicator.h"
+
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace blink {
+
+// Checks for the initial state of UserGestureIndicator.
+TEST(UserGestureIndicatorTest, InitialState)
+{
+    EXPECT_FALSE(UserGestureIndicator::processingUserGesture());
+    EXPECT_FALSE(UserGestureIndicator::processedUserGestureSinceLoad());
+    EXPECT_EQ(nullptr, UserGestureIndicator::currentToken());
+    EXPECT_FALSE(UserGestureIndicator::consumeUserGesture());
+}
+
+TEST(UserGestureIndicatorTest, ConstructedWithNewUserGesture)
+{
+    UserGestureIndicator::clearProcessedUserGestureSinceLoad();
+    UserGestureIndicator userGestureScope(DefinitelyProcessingNewUserGesture);
+
+    EXPECT_TRUE(UserGestureIndicator::processingUserGesture());
+    EXPECT_TRUE(UserGestureIndicator::processedUserGestureSinceLoad());
+    EXPECT_NE(nullptr, UserGestureIndicator::currentToken());
+
+    EXPECT_TRUE(UserGestureIndicator::consumeUserGesture());
+}
+
+TEST(UserGestureIndicatorTest, ConstructedWithUserGesture)
+{
+    UserGestureIndicator::clearProcessedUserGestureSinceLoad();
+    UserGestureIndicator userGestureScope(DefinitelyProcessingUserGesture);
+
+    EXPECT_TRUE(UserGestureIndicator::processingUserGesture());
+    EXPECT_TRUE(UserGestureIndicator::processedUserGestureSinceLoad());
+    EXPECT_NE(nullptr, UserGestureIndicator::currentToken());
+
+    EXPECT_TRUE(UserGestureIndicator::consumeUserGesture());
+}
+
+TEST(UserGestureIndicatorTest, ConstructedWithNoUserGesture)
+{
+    UserGestureIndicator::clearProcessedUserGestureSinceLoad();
+    UserGestureIndicator userGestureScope(DefinitelyNotProcessingUserGesture);
+
+    EXPECT_FALSE(UserGestureIndicator::processingUserGesture());
+    EXPECT_FALSE(UserGestureIndicator::processedUserGestureSinceLoad());
+    EXPECT_NE(nullptr, UserGestureIndicator::currentToken());
+
+    EXPECT_FALSE(UserGestureIndicator::consumeUserGesture());
+}
+
+// Check that after UserGestureIndicator destruction state will be cleared.
+TEST(UserGestureIndicatorTest, DestructUserGestureIndicator)
+{
+    {
+        UserGestureIndicator userGestureScope(DefinitelyProcessingUserGesture);
+
+        EXPECT_TRUE(UserGestureIndicator::processingUserGesture());
+        EXPECT_TRUE(UserGestureIndicator::processedUserGestureSinceLoad());
+        EXPECT_NE(nullptr, UserGestureIndicator::currentToken());
+    }
+
+    EXPECT_FALSE(UserGestureIndicator::processingUserGesture());
+    EXPECT_EQ(nullptr, UserGestureIndicator::currentToken());
+    EXPECT_FALSE(UserGestureIndicator::consumeUserGesture());
+}
+
+// Tests creation of scoped UserGestureIndicator objects.
+TEST(UserGestureIndicatorTest, ScopedNewUserGestureIndicators)
+{
+    // Root GestureIndicator and GestureToken.
+    UserGestureIndicator userGestureScope(DefinitelyProcessingNewUserGesture);
+
+    EXPECT_TRUE(UserGestureIndicator::processingUserGesture());
+    EXPECT_TRUE(UserGestureIndicator::processedUserGestureSinceLoad());
+    EXPECT_NE(nullptr, UserGestureIndicator::currentToken());
+    {
+        // Construct inner UserGestureIndicator.
+        // It should share GestureToken with the root indicator.
+        UserGestureIndicator innerUserGesture(DefinitelyProcessingNewUserGesture);
+
+        EXPECT_TRUE(UserGestureIndicator::processingUserGesture());
+        EXPECT_NE(nullptr, UserGestureIndicator::currentToken());
+
+        // Consume inner gesture.
+        EXPECT_TRUE(UserGestureIndicator::consumeUserGesture());
+    }
+
+    EXPECT_TRUE(UserGestureIndicator::processingUserGesture());
+    EXPECT_NE(nullptr, UserGestureIndicator::currentToken());
+
+    // Consume root gesture.
+    EXPECT_TRUE(UserGestureIndicator::consumeUserGesture());
+    EXPECT_FALSE(UserGestureIndicator::processingUserGesture());
+    EXPECT_NE(nullptr, UserGestureIndicator::currentToken());
+}
+
+} // namespace blink