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// 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 "third_party/blink/renderer/core/editing/selection_template.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/blink/renderer/core/editing/ephemeral_range.h"
#include "third_party/blink/renderer/core/editing/testing/editing_test_base.h"
namespace blink {
class SelectionTest : public EditingTestBase {};
TEST_F(SelectionTest, defaultConstructor) {
SelectionInDOMTree selection;
EXPECT_EQ(TextAffinity::kDownstream, selection.Affinity());
EXPECT_TRUE(selection.IsBaseFirst());
EXPECT_TRUE(selection.IsNone());
EXPECT_EQ(Position(), selection.Base());
EXPECT_EQ(Position(), selection.Extent());
EXPECT_EQ(EphemeralRange(), selection.ComputeRange());
}
TEST_F(SelectionTest, IsBaseFirst) {
SetBodyContent("<div id='sample'>abcdef</div>");
Element* sample = GetDocument().getElementById("sample");
Position base(Position(sample->firstChild(), 4));
Position extent(Position(sample->firstChild(), 2));
SelectionInDOMTree::Builder builder;
builder.Collapse(base);
builder.Extend(extent);
const SelectionInDOMTree& selection = builder.Build();
EXPECT_EQ(TextAffinity::kDownstream, selection.Affinity());
EXPECT_FALSE(selection.IsBaseFirst());
EXPECT_FALSE(selection.IsNone());
EXPECT_EQ(base, selection.Base());
EXPECT_EQ(extent, selection.Extent());
}
TEST_F(SelectionTest, caret) {
SetBodyContent("<div id='sample'>abcdef</div>");
Element* sample = GetDocument().getElementById("sample");
Position position(Position(sample->firstChild(), 2));
SelectionInDOMTree::Builder builder;
builder.Collapse(position);
const SelectionInDOMTree& selection = builder.Build();
EXPECT_EQ(TextAffinity::kDownstream, selection.Affinity());
EXPECT_TRUE(selection.IsBaseFirst());
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 = GetDocument().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::kDownstream, selection.Affinity());
EXPECT_TRUE(selection.IsBaseFirst());
EXPECT_FALSE(selection.IsNone());
EXPECT_EQ(base, selection.Base());
EXPECT_EQ(extent, selection.Extent());
}
TEST_F(SelectionTest, SetAsBacwardAndForward) {
SetBodyContent("<div id='sample'>abcdef</div>");
Element* sample = GetDocument().getElementById("sample");
Position start(Position(sample->firstChild(), 2));
Position end(Position(sample->firstChild(), 4));
EphemeralRange range(start, end);
const SelectionInDOMTree& backward_selection =
SelectionInDOMTree::Builder().SetAsBackwardSelection(range).Build();
const SelectionInDOMTree& forward_selection =
SelectionInDOMTree::Builder().SetAsForwardSelection(range).Build();
const SelectionInDOMTree& collapsed_selection =
SelectionInDOMTree::Builder()
.SetAsForwardSelection(EphemeralRange(start))
.Build();
EXPECT_EQ(TextAffinity::kDownstream, backward_selection.Affinity());
EXPECT_FALSE(backward_selection.IsBaseFirst());
EXPECT_FALSE(backward_selection.IsNone());
EXPECT_EQ(end, backward_selection.Base());
EXPECT_EQ(start, backward_selection.Extent());
EXPECT_EQ(start, backward_selection.ComputeStartPosition());
EXPECT_EQ(end, backward_selection.ComputeEndPosition());
EXPECT_EQ(range, backward_selection.ComputeRange());
EXPECT_EQ(TextAffinity::kDownstream, forward_selection.Affinity());
EXPECT_TRUE(forward_selection.IsBaseFirst());
EXPECT_FALSE(forward_selection.IsNone());
EXPECT_EQ(start, forward_selection.Base());
EXPECT_EQ(end, forward_selection.Extent());
EXPECT_EQ(start, forward_selection.ComputeStartPosition());
EXPECT_EQ(end, forward_selection.ComputeEndPosition());
EXPECT_EQ(range, forward_selection.ComputeRange());
EXPECT_EQ(TextAffinity::kDownstream, collapsed_selection.Affinity());
EXPECT_TRUE(collapsed_selection.IsBaseFirst());
EXPECT_FALSE(collapsed_selection.IsNone());
EXPECT_EQ(start, collapsed_selection.Base());
EXPECT_EQ(start, collapsed_selection.Extent());
EXPECT_EQ(start, collapsed_selection.ComputeStartPosition());
EXPECT_EQ(start, collapsed_selection.ComputeEndPosition());
EXPECT_EQ(EphemeralRange(start, start), collapsed_selection.ComputeRange());
}
TEST_F(SelectionTest, EquivalentPositions) {
SetBodyContent(
"<div id='first'></div>"
"<div id='last'></div>");
Element* first = GetDocument().getElementById("first");
Element* last = GetDocument().getElementById("last");
Position after_first = Position::AfterNode(*first);
Position before_last = Position::BeforeNode(*last);
// Test selections created with different but equivalent positions.
EXPECT_NE(after_first, before_last);
EXPECT_TRUE(after_first.IsEquivalent(before_last));
for (bool reversed : {false, true}) {
const Position& start = reversed ? before_last : after_first;
const Position& end = reversed ? after_first : before_last;
EphemeralRange range(start, end);
const SelectionInDOMTree& selection =
SelectionInDOMTree::Builder().Collapse(start).Extend(end).Build();
EXPECT_EQ(
selection,
SelectionInDOMTree::Builder().SetAsForwardSelection(range).Build());
EXPECT_TRUE(selection.IsCaret());
EXPECT_EQ(range, selection.ComputeRange());
EXPECT_EQ(start, selection.Base());
EXPECT_EQ(start, selection.Extent());
}
}
} // namespace blink
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