Introduce Selection class

third_party/WebKit/Source/core/editing/SelectionTemplateTest.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 "core/editing/SelectionTemplate.h"
+
+#include "core/editing/EditingTestBase.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace blink {
+
+class SelectionTest : public EditingTestBase {};
+
+TEST_F(SelectionTest, defaultConstructor) {
+  SelectionInDOMTree selection;
+
+  EXPECT_EQ(TextAffinity::Downstream, selection.affinity());
+  EXPECT_EQ(CharacterGranularity, selection.granularity());
+  EXPECT_FALSE(selection.hasTrailingWhitespace());
+  EXPECT_FALSE(selection.isDirectional());
+  EXPECT_TRUE(selection.isNone());
+  EXPECT_EQ(Position(), selection.base());
+  EXPECT_EQ(Position(), selection.extent());
+}
+
+TEST_F(SelectionTest, caret) {
+  setBodyContent("<div id='sample'>abcdef</div>");
+
+  Element* sample = document().getElementById("sample");
+  Position position(Position(sample->firstChild(), 2));
+  SelectionInDOMTree::Builder builder;
+  builder.collapse(position);
+  const SelectionInDOMTree& selection = builder.build();
+
+  EXPECT_EQ(TextAffinity::Downstream, selection.affinity());
+  EXPECT_EQ(CharacterGranularity, selection.granularity());
+  EXPECT_FALSE(selection.hasTrailingWhitespace());
+  EXPECT_FALSE(selection.isDirectional());
+  EXPECT_FALSE(selection.isNone());
+  EXPECT_EQ(position, selection.base());
+  EXPECT_EQ(position, selection.extent());
+}
+
+TEST_F(SelectionTest, range) {
+  setBodyContent("<div id='sample'>abcdef</div>");
+
+  Element* sample = document().getElementById("sample");
+  Position base(Position(sample->firstChild(), 2));
+  Position extent(Position(sample->firstChild(), 4));
+  SelectionInDOMTree::Builder builder;
+  builder.collapse(base);
+  builder.extend(extent);
+  const SelectionInDOMTree& selection = builder.build();
+
+  EXPECT_EQ(TextAffinity::Downstream, selection.affinity());
+  EXPECT_EQ(CharacterGranularity, selection.granularity());
+  EXPECT_FALSE(selection.hasTrailingWhitespace());
+  EXPECT_FALSE(selection.isDirectional());
+  EXPECT_FALSE(selection.isNone());
+  EXPECT_EQ(base, selection.base());
+  EXPECT_EQ(extent, selection.extent());
+}
+
+}  // namespace blink