Tools/TestWebKitAPI/Tests/WebKitCocoa/CustomUserAgent.mm

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#include "config.h"

#import "PlatformUtilities.h"
#import "TestNavigationDelegate.h"
#import <WebKit/WebKit.h>
#import <wtf/RetainPtr.h>

static bool done = false;

TEST(CustomUserAgent, UpdateCachedNavigatorUserAgent)
{
    auto webView = adoptNS([[WKWebView alloc] initWithFrame:NSMakeRect(0, 0, 800, 600)]);
    [webView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@"about:blank"]]];

    [webView _test_waitForDidFinishNavigation];

    // Query navigator.userAgent once so it gets cached.
    [webView evaluateJavaScript:@"navigator.userAgent;" completionHandler:^(id _Nullable response, NSError * _Nullable error) {
        ASSERT_TRUE(!error);
        NSString *userAgent = (NSString *)response;
        ASSERT_TRUE(!!userAgent);
        // Override user agent with a custom one.
        webView.get().customUserAgent = @"Custom UserAgent";
        done = true;
    }];
    TestWebKitAPI::Util::run(&done);
    done = false;

    // Query navigator.userAgent again to make sure its cache was invalidated and it returns the updated value.
    [webView evaluateJavaScript:@"navigator.userAgent;" completionHandler:^(id _Nullable response, NSError * _Nullable error) {
        ASSERT_TRUE(!error);
        NSString *userAgent = (NSString *)response;
        ASSERT_TRUE(!!userAgent);
        EXPECT_WK_STREQ(@"Custom UserAgent", userAgent);
        done = true;
    }];
    TestWebKitAPI::Util::run(&done);
    done = false;
}