LayoutTests/http/tests/cookies/private-cookie-storage.html

<script src="resources/cookies-test-pre.js"></script>
<script>
description("This test checks that cookies set from a Set-Cookie header in private browsing mode are stored in the same cookie storage as cookies set with document.cookie.");
jsTestIsAsync = true;

function runTest() {
    if (window.location.search === "?stepTwo") {
        debug("Cookies after enabling private browsing (should be empty): " + document.cookie);
        if (!testCookies("")) { // We're using a different cookie storage now.  key1=value1 is still in the default cookie storage.
            finishJSTest();
            return;
        }
        document.cookie = "key2=value2";
        debug("Cookies after setting in private browsing (should be key2=value2):" + document.cookie);
        if (!testCookies("key2=value2")) {
            finishJSTest();
            return;
        }
        clearCookies();

        if (window.testRunner)
            testRunner.setShouldSwapToDefaultSessionOnNextNavigation(true);
        window.location = "/cookies/private-cookie-storage.html?stepThree";
    } else if (window.location.search === "?stepThree") {
        debug("Cookies after disabling private browsing (should be key1=value1):" + document.cookie);
        testCookies("key1=value1");
        finishJSTest();
    } else {
        debug("Cookies before setting (should be empty):" + document.cookie);

        document.cookie = "key1=value1";
        debug("Cookies before enabling private browsing (should be key1=value1):" + document.cookie);
        if (!testCookies("key1=value1")) {
            finishJSTest();
            return;
        }
    
        if (window.testRunner)
            testRunner.setShouldSwapToEphemeralSessionOnNextNavigation(true);
        window.location = "/cookies/private-cookie-storage.html?stepTwo";
    }
}

onload = runTest;
</script>
<script src="resources/cookies-test-post.js"></script>