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// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/ui/tabs/tab_strip_model_selection_state.h"
#include <memory>
#include <unordered_set>
#include "components/tabs/public/mock_tab_interface.h"
#include "components/tabs/public/tab_interface.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace tabs {
class TabStripModelSelectionStateTest : public testing::Test {
public:
void SetUp() override {
tab1_ = std::make_unique<MockTabInterface>();
tab2_ = std::make_unique<MockTabInterface>();
tab3_ = std::make_unique<MockTabInterface>();
}
protected:
std::unique_ptr<MockTabInterface> tab1_;
std::unique_ptr<MockTabInterface> tab2_;
std::unique_ptr<MockTabInterface> tab3_;
};
TEST_F(TabStripModelSelectionStateTest, InitialState) {
TabStripModelSelectionState selection_state({}, nullptr, nullptr);
EXPECT_TRUE(selection_state.selected_tabs().empty());
EXPECT_EQ(nullptr, selection_state.active_tab());
EXPECT_EQ(nullptr, selection_state.anchor_tab());
EXPECT_TRUE(selection_state.Valid());
}
TEST_F(TabStripModelSelectionStateTest, Constructor) {
std::unordered_set<raw_ptr<TabInterface>> selected_tabs = {tab1_.get(),
tab2_.get()};
TabStripModelSelectionState selection_state(selected_tabs, tab1_.get(),
tab2_.get());
EXPECT_EQ(2u, selection_state.selected_tabs().size());
EXPECT_TRUE(selection_state.IsSelected(tab1_.get()));
EXPECT_TRUE(selection_state.IsSelected(tab2_.get()));
EXPECT_EQ(tab1_.get(), selection_state.active_tab());
EXPECT_EQ(tab2_.get(), selection_state.anchor_tab());
EXPECT_TRUE(selection_state.Valid());
}
TEST_F(TabStripModelSelectionStateTest, IsSelected) {
std::unordered_set<raw_ptr<TabInterface>> selected_tabs = {tab1_.get()};
TabStripModelSelectionState selection_state(selected_tabs, tab1_.get(),
tab1_.get());
EXPECT_TRUE(selection_state.IsSelected(tab1_.get()));
EXPECT_FALSE(selection_state.IsSelected(tab2_.get()));
}
TEST_F(TabStripModelSelectionStateTest, AddAndRemoveTabFromSelection) {
TabStripModelSelectionState selection_state({tab1_.get()}, tab1_.get(),
tab1_.get());
EXPECT_TRUE(selection_state.IsSelected(tab1_.get()));
EXPECT_FALSE(selection_state.IsSelected(tab2_.get()));
selection_state.AddTabToSelection(tab2_.get());
EXPECT_TRUE(selection_state.IsSelected(tab2_.get()));
EXPECT_EQ(2u, selection_state.selected_tabs().size());
// Adding again should do nothing.
selection_state.AddTabToSelection(tab2_.get());
EXPECT_EQ(2u, selection_state.selected_tabs().size());
selection_state.RemoveTabFromSelection(tab1_.get());
EXPECT_FALSE(selection_state.IsSelected(tab1_.get()));
EXPECT_EQ(1u, selection_state.selected_tabs().size());
}
TEST_F(TabStripModelSelectionStateTest, SetActiveTab) {
TabStripModelSelectionState selection_state({tab1_.get()}, tab1_.get(),
tab1_.get());
selection_state.SetActiveTab(tab2_.get());
EXPECT_EQ(tab2_.get(), selection_state.active_tab());
EXPECT_TRUE(selection_state.IsSelected(tab2_.get()));
EXPECT_EQ(2u, selection_state.selected_tabs().size());
EXPECT_TRUE(selection_state.Valid());
}
TEST_F(TabStripModelSelectionStateTest, SetAnchorTab) {
TabStripModelSelectionState selection_state({tab1_.get()}, tab1_.get(),
tab1_.get());
selection_state.SetAnchorTab(tab2_.get());
EXPECT_EQ(tab2_.get(), selection_state.anchor_tab());
EXPECT_TRUE(selection_state.IsSelected(tab2_.get()));
EXPECT_EQ(2u, selection_state.selected_tabs().size());
EXPECT_TRUE(selection_state.Valid());
}
TEST_F(TabStripModelSelectionStateTest, AppendTabsToSelection) {
TabStripModelSelectionState selection_state({tab1_.get()}, tab1_.get(),
tab1_.get());
std::unordered_set<TabInterface*> new_tabs = {tab2_.get(), tab3_.get()};
EXPECT_TRUE(selection_state.AppendTabsToSelection(new_tabs));
EXPECT_EQ(3u, selection_state.selected_tabs().size());
EXPECT_TRUE(selection_state.IsSelected(tab1_.get()));
EXPECT_TRUE(selection_state.IsSelected(tab2_.get()));
EXPECT_TRUE(selection_state.IsSelected(tab3_.get()));
// Appending same tabs again should return false.
EXPECT_FALSE(selection_state.AppendTabsToSelection(new_tabs));
}
TEST_F(TabStripModelSelectionStateTest, SetSelectedTabs) {
TabStripModelSelectionState selection_state({tab1_.get()}, tab1_.get(),
tab1_.get());
std::unordered_set<TabInterface*> new_tabs = {tab2_.get(), tab3_.get()};
selection_state.SetSelectedTabs(new_tabs, tab2_.get(), tab3_.get());
EXPECT_EQ(2u, selection_state.selected_tabs().size());
EXPECT_FALSE(selection_state.IsSelected(tab1_.get()));
EXPECT_TRUE(selection_state.IsSelected(tab2_.get()));
EXPECT_TRUE(selection_state.IsSelected(tab3_.get()));
EXPECT_EQ(tab2_.get(), selection_state.active_tab());
EXPECT_EQ(tab3_.get(), selection_state.anchor_tab());
EXPECT_TRUE(selection_state.Valid());
}
TEST_F(TabStripModelSelectionStateTest, SetSelectedTabsDefaultActiveAnchor) {
TabStripModelSelectionState selection_state({tab1_.get()}, tab1_.get(),
tab1_.get());
std::unordered_set<TabInterface*> new_tabs = {tab2_.get(), tab3_.get()};
selection_state.SetSelectedTabs(new_tabs);
EXPECT_EQ(2u, selection_state.selected_tabs().size());
EXPECT_FALSE(selection_state.IsSelected(tab1_.get()));
EXPECT_TRUE(selection_state.IsSelected(tab2_.get()));
EXPECT_TRUE(selection_state.IsSelected(tab3_.get()));
// Active and anchor should be one of the new tabs.
EXPECT_TRUE(selection_state.IsSelected(selection_state.active_tab()));
EXPECT_TRUE(selection_state.IsSelected(selection_state.anchor_tab()));
EXPECT_TRUE(selection_state.Valid());
}
TEST_F(TabStripModelSelectionStateTest, Valid) {
// Empty is valid.
TabStripModelSelectionState selection_state_empty({}, nullptr, nullptr);
EXPECT_TRUE(selection_state_empty.Valid());
// Non-empty with active and anchor is valid.
TabStripModelSelectionState selection_state_valid({tab1_.get()}, tab1_.get(),
tab1_.get());
EXPECT_TRUE(selection_state_valid.Valid());
}
TEST_F(TabStripModelSelectionStateTest, InvalidStates) {
// Empty selection with active tab is invalid.
EXPECT_FALSE(TabStripModelSelectionState({}, tab1_.get(), nullptr).Valid());
// Empty selection with anchor tab is invalid.
EXPECT_FALSE(TabStripModelSelectionState({}, nullptr, tab1_.get()).Valid());
// Non-empty selection with null active tab is invalid.
EXPECT_FALSE(
TabStripModelSelectionState({tab1_.get()}, nullptr, tab1_.get()).Valid());
// Non-empty selection with null anchor tab is invalid.
EXPECT_FALSE(
TabStripModelSelectionState({tab1_.get()}, tab1_.get(), nullptr).Valid());
// Active tab not in selection is invalid.
EXPECT_FALSE(
TabStripModelSelectionState({tab1_.get()}, tab2_.get(), tab1_.get())
.Valid());
// Anchor tab not in selection is invalid.
EXPECT_FALSE(
TabStripModelSelectionState({tab1_.get()}, tab1_.get(), tab2_.get())
.Valid());
}
} // namespace tabs
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