TimingFunction test helper.

Source/core/platform/animation/TimingFunctionTestHelper.cpp

Index: Source/core/platform/animation/TimingFunctionTestHelper.cpp
diff --git a/Source/core/platform/animation/TimingFunctionTestHelper.cpp b/Source/core/platform/animation/TimingFunctionTestHelper.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..9fdf9e6212856c0f5d322ed98b023423bf1f7425
--- /dev/null
+++ b/Source/core/platform/animation/TimingFunctionTestHelper.cpp
@@ -0,0 +1,151 @@
+/*
+ * 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"
+

[Steve Block, 2013/11/04 23:05:02]

Superfluous blank line

[mithro-old, 2013/11/05 01:53:09]

Done.

+#include "core/platform/animation/TimingFunctionTestHelper.h"
+
+#include <ostream> // NOLINT
+
+namespace WebCore {
+
+void PrintTo(const LinearTimingFunction& timefunction, ::std::ostream* os)

[Steve Block, 2013/11/04 23:05:02]

s/timeFunction/timingFunction

[mithro-old, 2013/11/05 01:53:09]

Done.

+{
+    *os << "LinearTimingFunction@" << &timefunction;
+}
+
+void PrintTo(const CubicBezierTimingFunction& timefunction, ::std::ostream* os)

[Steve Block, 2013/11/04 23:05:02]

Function and method names start with a lower case letter - printTo()

[mithro-old, 2013/11/05 01:53:09]

Don't get to control the name of this method. Set by gtest.

+{
+    *os << "CubicBezierTimingFunction@" << &timefunction << "(";
+    switch (timefunction.subType()) {
+    case CubicBezierTimingFunction::Ease:
+        *os << "Ease";
+        break;
+    case CubicBezierTimingFunction::EaseIn:
+        *os << "EaseIn";
+        break;
+    case CubicBezierTimingFunction::EaseOut:
+        *os << "EaseOut";
+        break;
+    case CubicBezierTimingFunction::EaseInOut:
+        *os << "EaseInOut";
+        break;
+    case CubicBezierTimingFunction::Custom:
+        *os << "Custom";
+        break;
+    default:
+        ASSERT_NOT_REACHED();
+    }
+    *os << ", " << timefunction.x1();
+    *os << ", " << timefunction.y1();
+    *os << ", " << timefunction.x2();
+    *os << ", " << timefunction.y2();
+    *os << ")";
+}
+
+void PrintTo(const StepsTimingFunction& timefunction, ::std::ostream* os)
+{
+    *os << "StepsTimingFunction@" << &timefunction << "(";
+    switch (timefunction.subType()) {
+    case StepsTimingFunction::Start:
+        *os << "Start";
+        break;
+    case StepsTimingFunction::End:
+        *os << "End";
+        break;
+    case StepsTimingFunction::Custom:
+        *os << "Custom";
+        break;
+    default:
+        ASSERT_NOT_REACHED();
+    }
+    *os << ", " << timefunction.numberOfSteps();
+    *os << ", " << (timefunction.stepAtStart() ? "true" : "false");
+    *os << ")";
+}
+
+class ChainedTimingFunctionPrintTo {

[Steve Block, 2013/11/04 23:05:02]

Is ChainedTimingFunctionPrinter a better name?

[mithro-old, 2013/11/05 01:53:09]

Done.

+private:
+    static void PrintTo(const ChainedTimingFunction& timefunction, ::std::ostream* os)
+    {
+        // Forward declare the generic PrintTo function as ChainedTimingFunction needs to call it.
+        void PrintTo(const TimingFunction&, ::std::ostream*);
+
+        *os << "ChainedTimingFunction@" << &timefunction << "(";
+        for (size_t i = 0; i < timefunction.m_segments.size(); i++) {
+            ChainedTimingFunction::Segment segment = timefunction.m_segments[i];
+            PrintTo(*(segment.m_timingFunction.get()), os);
+            *os << "[" << segment.m_min << " -> " << segment.m_max << "]";
+            if (i+1 != timefunction.m_segments.size()) {
+                *os << ", ";
+            }
+        }
+        *os << ")";
+    }
+
+    friend void PrintTo(const ChainedTimingFunction&, ::std::ostream*);
+};
+
+void PrintTo(const ChainedTimingFunction& timefunction, ::std::ostream* os)

[Steve Block, 2013/11/04 23:05:02]

Do we need this wrapper? Can the generic PrintTo() call
ChainedTimingFunctionPrintTo::PrintTo directly?

[mithro-old, 2013/11/05 01:53:09]

Yes, otherwise when you try and print a ChainedTimingFunction it will get the
generic method (*not* the base one). See
https://sites.google.com/a/chromium.org/dev/blink/unittesting#TOC-Pretty-Prin...

+{
+    ChainedTimingFunctionPrintTo::PrintTo(timefunction, os);
+}
+
+// The generic PrintTo *must* come after the non-generic PrintTo otherwise it
+// will end up calling itself.
+void PrintTo(const TimingFunction& timefunction, ::std::ostream* os)
+{
+    switch (timefunction.type()) {
+    case TimingFunction::LinearFunction: {
+        const LinearTimingFunction* linear = static_cast<const LinearTimingFunction*>(&timefunction);
+        PrintTo(*linear, os);
+        return;
+    }
+    case TimingFunction::CubicBezierFunction: {
+        const CubicBezierTimingFunction* cubic = static_cast<const CubicBezierTimingFunction*>(&timefunction);
+        PrintTo(*cubic, os);
+        return;
+    }
+    case TimingFunction::StepsFunction: {
+        const StepsTimingFunction* step = static_cast<const StepsTimingFunction*>(&timefunction);
+        PrintTo(*step, os);
+        return;
+    }
+    case TimingFunction::ChainedFunction: {
+        const ChainedTimingFunction* chained = static_cast<const ChainedTimingFunction*>(&timefunction);
+        PrintTo(*chained, os);
+        return;
+    }
+    default:
+        ASSERT_NOT_REACHED();
+    }
+}
+
+} // namespace WebCore