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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/browser_list_enumerator.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/browser/ui/browser_list.h"
#include "chrome/test/base/in_process_browser_test.h"
#include "content/public/test/browser_test.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
using BrowserListIteratorBrowserTest = InProcessBrowserTest;
IN_PROC_BROWSER_TEST_F(BrowserListIteratorBrowserTest, BasicIterator) {
Browser* browser1 = browser();
Browser* browser2 = CreateBrowser(browser()->profile());
Browser* browser3 = CreateBrowser(browser()->profile());
EXPECT_EQ(3u, BrowserList::GetInstance()->size());
std::set<Browser*> visited;
BrowserListEnumerator enumerator;
while (!enumerator.empty()) {
visited.insert(enumerator.Next());
}
EXPECT_THAT(visited,
testing::UnorderedElementsAre(browser1, browser2, browser3));
}
IN_PROC_BROWSER_TEST_F(BrowserListIteratorBrowserTest, IteratorWithInsertions) {
Browser* browser1 = browser();
Browser* browser2 = CreateBrowser(browser()->profile());
EXPECT_EQ(2u, BrowserList::GetInstance()->size());
// Start to scan the list.
constexpr bool kEnumerateNewBrowser = true;
BrowserListEnumerator enumerator(kEnumerateNewBrowser);
std::set<Browser*> visited;
if (!enumerator.empty()) {
visited.insert(enumerator.Next());
}
// Insert a browser while the list is scanned.
Browser* browser3 = CreateBrowser(browser()->profile());
while (!enumerator.empty()) {
visited.insert(enumerator.Next());
}
EXPECT_THAT(visited,
testing::UnorderedElementsAre(browser1, browser2, browser3));
}
IN_PROC_BROWSER_TEST_F(BrowserListIteratorBrowserTest,
IteratorWithSkipInsertions) {
Browser* browser1 = browser();
Browser* browser2 = CreateBrowser(browser()->profile());
EXPECT_EQ(2u, BrowserList::GetInstance()->size());
// Start to scan the list.
constexpr bool kEnumerateNewBrowser = false;
BrowserListEnumerator enumerator(kEnumerateNewBrowser);
std::set<Browser*> visited;
if (!enumerator.empty()) {
visited.insert(enumerator.Next());
}
// Insert a browser while the list is scanned.
CreateBrowser(browser()->profile());
while (!enumerator.empty()) {
visited.insert(enumerator.Next());
}
EXPECT_THAT(visited, testing::UnorderedElementsAre(browser1, browser2));
}
IN_PROC_BROWSER_TEST_F(BrowserListIteratorBrowserTest, IteratorWithRemovals) {
Browser* browser1 = browser();
Browser* browser2 = CreateBrowser(browser()->profile());
Browser* browser3 = CreateBrowser(browser()->profile());
EXPECT_EQ(3u, BrowserList::GetInstance()->size());
// Start to scan the list.
BrowserListEnumerator enumerator;
std::set<Browser*> visited;
if (!enumerator.empty()) {
visited.insert(enumerator.Next());
}
// Remove a browser while the list is scanned.
CloseBrowserSynchronously(browser2);
while (!enumerator.empty()) {
visited.insert(enumerator.Next());
}
EXPECT_THAT(visited, testing::UnorderedElementsAre(browser1, browser3));
}
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