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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
"use strict";
const EXPORTED_SYMBOLS = [
"request_count_checking",
"test_hint_preload",
"test_hint_preload_internal",
"test_preload_hint_and_request",
];
const { Assert } = ChromeUtils.importESModule(
"resource://testing-common/Assert.sys.mjs"
);
const { BrowserTestUtils } = ChromeUtils.importESModule(
"resource://testing-common/BrowserTestUtils.sys.mjs"
);
const { gBrowser } = Services.wm.getMostRecentWindow("navigator:browser");
async function request_count_checking(testName, got, expected) {
// stringify to pretty print assert output
let g = JSON.stringify(got);
let e = JSON.stringify(expected);
// each early hint request can starts one hinted request, but doesn't yet
// complete the early hint request during the test case
Assert.ok(
got.hinted == expected.hinted,
`${testName}: unexpected amount of hinted request made expected ${expected.hinted} (${e}), got ${got.hinted} (${g})`
);
// when the early hint request doesn't complete fast enough, another request
// is currently sent from the main document
let expected_normal = expected.normal;
Assert.ok(
got.normal == expected_normal,
`${testName}: unexpected amount of normal request made expected ${expected_normal} (${e}), got ${got.normal} (${g})`
);
}
async function test_hint_preload(
testName,
requestFrom,
imgUrl,
expectedRequestCount,
uuid = undefined
) {
// generate a uuid if none were passed
if (uuid == undefined) {
uuid = Services.uuid.generateUUID();
}
await test_hint_preload_internal(
testName,
requestFrom,
[[imgUrl, uuid.toString()]],
expectedRequestCount
);
}
// - testName is just there to be printed during Asserts when failing
// - the baseUrl can't have query strings, because they are currently used to pass
// the early hint the server responds with
// - urls are in the form [[url1, uuid1], ...]. The uuids are there to make each preload
// unique and not available in the cache from other test cases
// - expectedRequestCount is the sum of all requested objects { normal: count, hinted: count }
async function test_hint_preload_internal(
testName,
requestFrom,
imgUrls,
expectedRequestCount
) {
// reset the count
let headers = new Headers();
headers.append("X-Early-Hint-Count-Start", "");
await fetch(
"http://example.com/browser/netwerk/test/browser/early_hint_pixel_count.sjs",
{ headers }
);
let requestUrl =
requestFrom +
"/browser/netwerk/test/browser/early_hint_main_html.sjs?" +
new URLSearchParams(imgUrls).toString(); // encode the hinted images as query string
await BrowserTestUtils.withNewTab(
{
gBrowser,
url: requestUrl,
waitForLoad: true,
},
async function() {}
);
let gotRequestCount = await fetch(
"http://example.com/browser/netwerk/test/browser/early_hint_pixel_count.sjs"
).then(response => response.json());
await request_count_checking(testName, gotRequestCount, expectedRequestCount);
}
// Verify that CSP policies in both the 103 response as well as the main response are respected.
// e.g.
// 103 Early Hint
// Content-Security-Policy: style-src: self;
// Link: </style.css>; rel=preload; as=style
// 200 OK
// Content-Security-Policy: style-src: none;
// Link: </font.ttf>; rel=preload; as=font
// Server-side we verify that:
// - the hinted preload request was made as expected
// - the load request request was made as expected
// Client-side, we verify that the image was loaded or not loaded, depending on the scenario
// This verifies preload hints and requests
async function test_preload_hint_and_request(input, expected_results) {
// reset the count
let headers = new Headers();
headers.append("X-Early-Hint-Count-Start", "");
await fetch(
"https://example.com/browser/netwerk/test/browser/early_hint_pixel_count.sjs",
{ headers }
);
let requestUrl = `https://example.com/browser/netwerk/test/browser/early_hint_csp_options_html.sjs?as=${
input.resource_type
}&hinted=${input.hinted ? "1" : "0"}${input.csp ? "&csp=" + input.csp : ""}${
input.csp_in_early_hint
? "&csp_in_early_hint=" + input.csp_in_early_hint
: ""
}${input.host ? "&host=" + input.host : ""}`;
await BrowserTestUtils.openNewForegroundTab(gBrowser, requestUrl, true);
let gotRequestCount = await fetch(
"https://example.com/browser/netwerk/test/browser/early_hint_pixel_count.sjs"
).then(response => response.json());
await Assert.deepEqual(gotRequestCount, expected_results, input.test_name);
gBrowser.removeCurrentTab();
Services.cache2.clear();
}
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