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// Copyright 2013 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_instant_controller.h"
#include <stddef.h>
#include <array>
#include <vector>
#include "base/gtest_prod_util.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/raw_ref.h"
#include "base/metrics/field_trial.h"
#include "base/run_loop.h"
#include "chrome/browser/search/instant_browsertest_base.h"
#include "chrome/browser/search/instant_service.h"
#include "chrome/browser/search/search.h"
#include "chrome/browser/signin/chrome_signin_client_factory.h"
#include "chrome/browser/signin/chrome_signin_client_test_util.h"
#include "chrome/browser/ui/tabs/tab_strip_model.h"
#include "chrome/common/url_constants.h"
#include "chrome/common/webui_url_constants.h"
#include "chrome/test/base/testing_profile.h"
#include "content/public/browser/navigation_handle.h"
#include "content/public/browser/reload_type.h"
#include "content/public/browser/render_frame_host.h"
#include "content/public/browser/render_process_host.h"
#include "content/public/browser/web_contents.h"
#include "content/public/browser/web_contents_observer.h"
#include "content/public/test/browser_test_utils.h"
namespace chrome {
namespace {
class BrowserInstantControllerTest : public InstantBrowserTestBase {
protected:
friend class FakeWebContentsObserver;
};
struct TabReloadTestCase {
const char* description;
const char* start_url;
bool start_in_instant_process;
bool end_in_ntp;
};
// Test cases for when Google is the initial, but not final provider.
const auto kTabReloadTestCasesFinalProviderNotGoogle =
std::to_array<TabReloadTestCase>({
{"NTP", chrome::kChromeUINewTabPageURL, false, true},
{"Remote SERP", "https://www.google.com/url?bar=search+terms", false,
false},
{"Other NTP", "https://bar.com/newtab", false, false},
});
class FakeWebContentsObserver : public content::WebContentsObserver {
public:
explicit FakeWebContentsObserver(content::WebContents* contents)
: WebContentsObserver(contents),
contents_(contents),
did_start_observer_(contents),
url_(contents->GetURL()) {}
void DidStartNavigation(content::NavigationHandle* navigation) override {
if (navigation->GetReloadType() == content::ReloadType::NONE) {
return;
}
if (*url_ == navigation->GetURL()) {
num_reloads_++;
}
current_url_ = navigation->GetURL();
}
const GURL& url() const { return *url_; }
const GURL& current_url() const { return contents_->GetURL(); }
int num_reloads() const { return num_reloads_; }
bool can_go_back() const { return contents_->GetController().CanGoBack(); }
void WaitForNavigationStart() { did_start_observer_.Wait(); }
protected:
friend class BrowserInstantControllerTest;
FRIEND_TEST_ALL_PREFIXES(BrowserInstantControllerTest,
DefaultSearchProviderChanged);
FRIEND_TEST_ALL_PREFIXES(BrowserInstantControllerTest, GoogleBaseURLUpdated);
private:
raw_ptr<content::WebContents> contents_;
content::DidStartNavigationObserver did_start_observer_;
const raw_ref<const GURL> url_;
GURL current_url_;
int num_reloads_ = 0;
};
// TODO(crbug.com/428088800): Test is flaky on Windows.
#if BUILDFLAG(IS_WIN)
#define MAYBE_DefaultSearchProviderChanged DISABLED_DefaultSearchProviderChanged
#else
#define MAYBE_DefaultSearchProviderChanged DefaultSearchProviderChanged
#endif
IN_PROC_BROWSER_TEST_F(BrowserInstantControllerTest,
MAYBE_DefaultSearchProviderChanged) {
size_t num_tests = std::size(kTabReloadTestCasesFinalProviderNotGoogle);
std::vector<std::unique_ptr<FakeWebContentsObserver>> observers;
for (size_t i = 0; i < num_tests; ++i) {
const TabReloadTestCase& test =
kTabReloadTestCasesFinalProviderNotGoogle[i];
ui_test_utils::NavigateToURLWithDisposition(
browser(), GURL(test.start_url),
WindowOpenDisposition::NEW_FOREGROUND_TAB,
ui_test_utils::BROWSER_TEST_WAIT_FOR_LOAD_STOP);
content::WebContents* contents =
browser()->tab_strip_model()->GetActiveWebContents();
// Validate initial instant state.
EXPECT_EQ(
test.start_in_instant_process,
instant_service_->IsInstantProcess(
contents->GetPrimaryMainFrame()->GetProcess()->GetDeprecatedID()))
<< test.description;
// Setup an observer to verify reload or absence thereof.
observers.push_back(std::make_unique<FakeWebContentsObserver>(contents));
// Tests for which tabs finish in the NTP should start in the default NTP
// before the provider is changed.
if (test.end_in_ntp) {
EXPECT_EQ(GURL(chrome::kChromeUINewTabPageURL),
observers.back()->current_url());
}
}
SetUserSelectedDefaultSearchProvider("https://bar.com/");
for (size_t i = 0; i < num_tests; ++i) {
FakeWebContentsObserver* observer = observers[i].get();
const TabReloadTestCase& test =
kTabReloadTestCasesFinalProviderNotGoogle[i];
// Ensure only the expected tabs(contents) reloaded.
// RunUntilIdle() ensures that tasks posted by TabReloader::Reload run.
base::RunLoop().RunUntilIdle();
if (observer->web_contents()->IsLoading()) {
// Ensure that we get DidStartNavigation, which can be dispatched
// asynchronously.
observer->WaitForNavigationStart();
}
if (test.end_in_ntp) {
EXPECT_EQ(GURL(chrome::kChromeUINewTabPageThirdPartyURL),
observer->current_url())
<< test.description;
}
}
}
} // namespace
} // namespace chrome
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