[DMC #23] Add CompositionMarker (subclass of DocumentMarker)

third_party/WebKit/Source/core/editing/markers/CompositionMarkerTest.cpp

+// Copyright 2017 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 "core/editing/markers/CompositionMarker.h"
+
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace blink {
+
+class CompositionMarkerTest : public ::testing::Test {};
+
+TEST_F(CompositionMarkerTest, MarkerType) {
+  DocumentMarker* marker = new CompositionMarker(0, 1, Color::kTransparent,
+                                                 false, Color::kTransparent);
+  EXPECT_EQ(DocumentMarker::kComposition, marker->GetType());
+}
+
+TEST_F(CompositionMarkerTest, ConstructorAndGetters) {
+  CompositionMarker* marker =
+      new CompositionMarker(0, 1, Color::kDarkGray, false, Color::kGray);
+  EXPECT_EQ(Color::kDarkGray, marker->UnderlineColor());
+  EXPECT_FALSE(marker->Thick());
+  EXPECT_EQ(Color::kGray, marker->BackgroundColor());
+
+  CompositionMarker* thick_marker =
+      new CompositionMarker(0, 1, Color::kDarkGray, true, Color::kGray);
+  EXPECT_EQ(true, thick_marker->Thick());
+}
+
+}  // namespace blink