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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 <memory>
#include <utility>
#include "base/types/pass_key.h"
#include "chrome/browser/ui/tabs/tab_group_desktop.h"
#include "chrome/browser/ui/tabs/tab_model.h"
#include "chrome/browser/ui/tabs/tab_strip_model.h"
#include "chrome/browser/ui/tabs/test_tab_strip_model_delegate.h"
#include "chrome/browser/ui/tabs/test_util.h"
#include "chrome/test/base/testing_profile.h"
#include "components/tabs/public/split_tab_collection.h"
#include "components/tabs/public/split_tab_visual_data.h"
#include "components/tabs/public/tab_collection.h"
#include "components/tabs/public/tab_group_tab_collection.h"
#include "components/tabs/public/unpinned_tab_collection.h"
#include "content/public/browser/web_contents.h"
#include "content/public/test/browser_task_environment.h"
#include "content/public/test/test_renderer_host.h"
#include "testing/gtest/include/gtest/gtest.h"
class TabCollectionIteratorTest : public ::testing::Test {
public:
TabCollectionIteratorTest() {
testing_profile_ = std::make_unique<TestingProfile>();
tab_strip_model_delegate_ = std::make_unique<TestTabStripModelDelegate>();
tab_strip_model_ = std::make_unique<TabStripModel>(
tab_strip_model_delegate_.get(), testing_profile_.get());
collection_ = std::make_unique<tabs::UnpinnedTabCollection>();
}
~TabCollectionIteratorTest() override { collection_.reset(); }
TabCollectionIteratorTest(const TabCollectionIteratorTest&) = delete;
TabCollectionIteratorTest& operator=(const TabCollectionIteratorTest&) =
delete;
std::unique_ptr<content::WebContents> MakeWebContents() {
return content::WebContents::Create(
content::WebContents::CreateParams(testing_profile_.get()));
}
tabs::UnpinnedTabCollection* collection() { return collection_.get(); }
TabStripModel* GetTabStripModel() { return tab_strip_model_.get(); }
Profile* profile() { return testing_profile_.get(); }
private:
content::BrowserTaskEnvironment task_environment_;
content::RenderViewHostTestEnabler test_enabler_;
// Use unpinned collection as it can have tabs and collection as children.
std::unique_ptr<tabs::UnpinnedTabCollection> collection_;
std::unique_ptr<Profile> testing_profile_;
std::unique_ptr<TestTabStripModelDelegate> tab_strip_model_delegate_;
std::unique_ptr<TabStripModel> tab_strip_model_;
tabs::PreventTabFeatureInitialization prevent_;
};
TEST_F(TabCollectionIteratorTest, TabIteratorWithoutChildren) {
EXPECT_EQ(*collection()->begin(), nullptr);
EXPECT_EQ(*collection()->end(), nullptr);
EXPECT_EQ(std::distance(collection()->begin(), collection()->end()), 0);
}
TEST_F(TabCollectionIteratorTest, TabIteratorWithOnlyCollection) {
TabGroupDesktop::Factory factory(profile());
collection()->AddCollection(
std::make_unique<tabs::TabGroupTabCollection>(
factory, tab_groups::TabGroupId::GenerateNew(),
tab_groups::TabGroupVisualData()),
0);
collection()->AddCollection(
std::make_unique<tabs::TabGroupTabCollection>(
factory, tab_groups::TabGroupId::GenerateNew(),
tab_groups::TabGroupVisualData()),
0);
EXPECT_EQ(*collection()->begin(), nullptr);
EXPECT_EQ(*collection()->end(), nullptr);
EXPECT_EQ(std::distance(collection()->begin(), collection()->end()), 0);
}
TEST_F(TabCollectionIteratorTest, TabIteratorWithOnlyTabs) {
for (int i = 0; i < 5; i++) {
collection()->AddTab(
std::make_unique<tabs::TabModel>(MakeWebContents(), GetTabStripModel()),
0);
}
EXPECT_EQ(*collection()->begin(), collection()->GetTabAtIndexRecursive(0));
EXPECT_EQ(*collection()->end(), nullptr);
EXPECT_EQ(std::distance(collection()->begin(), collection()->end()), 5);
}
TEST_F(TabCollectionIteratorTest, TabIteratorWithMixedTabsAndCollections) {
// Add a group with two tabs.
TabGroupDesktop::Factory factory(profile());
std::unique_ptr<tabs::TabGroupTabCollection> group_one =
std::make_unique<tabs::TabGroupTabCollection>(
factory, tab_groups::TabGroupId::GenerateNew(),
tab_groups::TabGroupVisualData());
group_one->AddTab(
std::make_unique<tabs::TabModel>(MakeWebContents(), GetTabStripModel()),
0);
group_one->AddTab(
std::make_unique<tabs::TabModel>(MakeWebContents(), GetTabStripModel()),
0);
collection()->AddCollection(std::move(group_one), 0);
// Add five tabs.
for (int i = 0; i < 5; i++) {
collection()->AddTab(
std::make_unique<tabs::TabModel>(MakeWebContents(), GetTabStripModel()),
collection()->ChildCount());
}
// Add another group containing a tab and a split collection with two tabs.
std::unique_ptr<tabs::TabGroupTabCollection> group_two =
std::make_unique<tabs::TabGroupTabCollection>(
factory, tab_groups::TabGroupId::GenerateNew(),
tab_groups::TabGroupVisualData());
group_two->AddTab(
std::make_unique<tabs::TabModel>(MakeWebContents(), GetTabStripModel()),
0);
std::unique_ptr<tabs::SplitTabCollection> split_collection =
std::make_unique<tabs::SplitTabCollection>(
split_tabs::SplitTabId::GenerateNew(),
split_tabs::SplitTabVisualData());
split_collection->AddTab(
std::make_unique<tabs::TabModel>(MakeWebContents(), GetTabStripModel()),
0);
split_collection->AddTab(
std::make_unique<tabs::TabModel>(MakeWebContents(), GetTabStripModel()),
0);
group_two->AddCollection(std::move(split_collection), 1);
collection()->AddCollection(std::move(group_two), collection()->ChildCount());
EXPECT_EQ(*collection()->end(), nullptr);
EXPECT_EQ(std::distance(collection()->begin(), collection()->end()), 10);
int index = 0;
for (auto it = collection()->begin(); it != collection()->end();
it++, index++) {
EXPECT_EQ(*it, collection()->GetTabAtIndexRecursive(index));
}
}
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