| <!DOCTYPE html> |
| <title>script type="webbundle" reuses webbundle resources</title> |
| <link |
| rel="help" |
| href="https://github.com/WICG/webpackage/blob/main/explainers/subresource-loading.md" |
| /> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="../resources/test-helpers.js"></script> |
| |
| <body> |
| <script> |
| window.TEST_WEB_BUNDLE_ELEMENT_TYPE = "script"; |
| setup(() => { |
| assert_true(HTMLScriptElement.supports("webbundle")); |
| }); |
| |
| const wbn_url = "../resources/wbn/subresource.wbn"; |
| const resource1 = "root.js"; |
| const resource2 = "submodule.js"; |
| |
| const resource1_url = `../resources/wbn/${resource1}`; |
| const resource2_url = `../resources/wbn/${resource2}`; |
| |
| let script1; |
| let script2; |
| |
| function cleanUp() { |
| if (script1) { |
| script1.remove(); |
| } |
| if (script2) { |
| script2.remove(); |
| } |
| } |
| |
| async function assertResource1CanBeFetched() { |
| const response = await fetch(resource1_url); |
| const text = await response.text(); |
| assert_equals(text, "export * from './submodule.js';\n"); |
| } |
| |
| async function assertResource1CanNotBeFetched() { |
| const response = await fetch(resource1_url); |
| assert_equals(response.status, 404); |
| } |
| |
| async function assertResource2CanBeFetched() { |
| const response = await fetch(resource2_url); |
| const text = await response.text(); |
| assert_equals(text, "export const result = 'OK';\n"); |
| } |
| |
| function createScriptWebBundle1() { |
| return createWebBundleElement(wbn_url, /*resources=*/ [resource1]); |
| } |
| |
| function createScriptWebBundle2(options) { |
| return createWebBundleElement(wbn_url, /*resources=*/ [resource2], /*options=*/ options); |
| } |
| |
| async function appendScriptWebBundle1AndFetchResource1() { |
| clearWebBundleFetchCount(); |
| script1 = createScriptWebBundle1(); |
| document.body.append(script1); |
| await assertResource1CanBeFetched(); |
| assert_equals(webBundleFetchCount(), 1); |
| } |
| |
| function clearWebBundleFetchCount() { |
| performance.clearResourceTimings(); |
| } |
| |
| function webBundleFetchCount() { |
| return performance |
| .getEntriesByType("resource") |
| .filter((e) => e.name.endsWith("subresource.wbn")).length; |
| } |
| |
| promise_test(async (t) => { |
| t.add_cleanup(cleanUp); |
| await appendScriptWebBundle1AndFetchResource1(); |
| clearWebBundleFetchCount(); |
| |
| // Append script2 without removing script1. |
| // script2 should fetch the wbn again. |
| script2 = createScriptWebBundle2(); |
| document.body.appendChild(script2); |
| |
| await assertResource1CanBeFetched() |
| await assertResource2CanBeFetched(); |
| assert_equals(webBundleFetchCount(), 1); |
| }, "A webbundle should be fetched again when new script element is appended."); |
| |
| promise_test(async (t) => { |
| t.add_cleanup(cleanUp); |
| await appendScriptWebBundle1AndFetchResource1(); |
| clearWebBundleFetchCount(); |
| |
| // Remove script1, then append script2 |
| // script2 should reuse webbundle resources. |
| script1.remove(); |
| script2 = createScriptWebBundle2(); |
| document.body.append(script2); |
| |
| await assertResource1CanNotBeFetched(); |
| await assertResource2CanBeFetched(); |
| assert_equals(webBundleFetchCount(), 0); |
| }, "'remove(), then append()' should reuse webbundle resources"); |
| |
| promise_test(async (t) => { |
| t.add_cleanup(cleanUp); |
| await appendScriptWebBundle1AndFetchResource1(); |
| clearWebBundleFetchCount(); |
| |
| // Remove script1, then append script2 with an explicit 'same-origin' credentials mode. |
| script1.remove(); |
| script2 = createScriptWebBundle2({ credentials: "same-origin" }); |
| document.body.append(script2); |
| |
| await assertResource1CanNotBeFetched(); |
| await assertResource2CanBeFetched(); |
| assert_equals(webBundleFetchCount(), 0); |
| }, "Should reuse webbundle resources if a credential mode is same"); |
| |
| promise_test(async (t) => { |
| t.add_cleanup(cleanUp); |
| await appendScriptWebBundle1AndFetchResource1(); |
| clearWebBundleFetchCount(); |
| |
| // Remove script1, then append script2 with a different credentials mode. |
| script1.remove(); |
| script2 = createScriptWebBundle2({ credentials: "omit" }); |
| document.body.append(script2); |
| |
| await assertResource1CanNotBeFetched(); |
| await assertResource2CanBeFetched(); |
| assert_equals(webBundleFetchCount(), 1); |
| }, "Should not reuse webbundle resources if a credentials mode is different (same-origin vs omit)"); |
| |
| promise_test(async (t) => { |
| t.add_cleanup(cleanUp); |
| await appendScriptWebBundle1AndFetchResource1(); |
| clearWebBundleFetchCount(); |
| |
| // Remove script1, then append script2 with a different credentials mode. |
| script1.remove(); |
| script2 = createScriptWebBundle2({ credentials: "include" }); |
| document.body.append(script2); |
| |
| await assertResource1CanNotBeFetched(); |
| await assertResource2CanBeFetched(); |
| assert_equals(webBundleFetchCount(), 1); |
| }, "Should not reuse webbundle resources if a credential mode is different (same-origin vs include"); |
| |
| promise_test(async (t) => { |
| t.add_cleanup(cleanUp); |
| await appendScriptWebBundle1AndFetchResource1(); |
| clearWebBundleFetchCount(); |
| |
| // Remove script1, then append the removed one. |
| script1.remove(); |
| document.body.append(script1); |
| |
| await assertResource1CanNotBeFetched(); |
| assert_equals(webBundleFetchCount(), 0); |
| }, "'remove(), then append()' for the same element should reuse webbundle resources"); |
| |
| promise_test(async (t) => { |
| t.add_cleanup(cleanUp); |
| await appendScriptWebBundle1AndFetchResource1(); |
| clearWebBundleFetchCount(); |
| |
| // Multiple 'remove(), then append()' for the same element. |
| script1.remove(); |
| document.body.append(script1); |
| |
| script1.remove(); |
| document.body.append(script1); |
| |
| await assertResource1CanNotBeFetched(); |
| assert_equals(webBundleFetchCount(), 0); |
| }, "Multiple 'remove(), then append()' for the same element should reuse webbundle resources"); |
| |
| |
| promise_test(async (t) => { |
| t.add_cleanup(cleanUp); |
| await appendScriptWebBundle1AndFetchResource1(); |
| clearWebBundleFetchCount(); |
| |
| // Remove script1. |
| script1.remove(); |
| |
| // Then append script2 in a separet task. |
| await new Promise(resolve => t.step_timeout(resolve, 0)); |
| script2 = createScriptWebBundle2(); |
| document.body.append(script2); |
| |
| await assertResource1CanNotBeFetched(); |
| await assertResource2CanBeFetched(); |
| assert_equals(webBundleFetchCount(), 1); |
| }, "'remove(), then append() in a separate task' should not reuse webbundle resources"); |
| |
| |
| promise_test(async (t) => { |
| t.add_cleanup(cleanUp); |
| await appendScriptWebBundle1AndFetchResource1(); |
| clearWebBundleFetchCount(); |
| |
| // Use replaceWith() to replace script1 with script2. |
| // script2 should reuse webbundle resources. |
| script2 = createScriptWebBundle2(); |
| script1.replaceWith(script2); |
| |
| await assertResource1CanNotBeFetched(); |
| await assertResource2CanBeFetched(); |
| |
| assert_equals(webBundleFetchCount(), 0); |
| }, "replaceWith() should reuse webbundle resources."); |
| |
| promise_test(async (t) => { |
| t.add_cleanup(cleanUp); |
| await appendScriptWebBundle1AndFetchResource1(); |
| clearWebBundleFetchCount(); |
| |
| // Move script1 to another document. Then append script2. |
| // script2 should reuse webbundle resources. |
| const another_document = new Document(); |
| another_document.append(script1); |
| script2 = createScriptWebBundle2(); |
| document.body.append(script2); |
| |
| await assertResource1CanNotBeFetched(); |
| await assertResource2CanBeFetched(); |
| |
| assert_equals(webBundleFetchCount(), 0); |
| |
| // TODO: Test the following cases: |
| // - The resources are not loaded from the webbundle in the new Document |
| // (Probably better to use a <iframe>.contentDocument) |
| // - Even if we move the script element back to the original Document, |
| // even immediately, the resources are not loaded from the webbundle in the |
| // original Document. |
| }, "append() should reuse webbundle resoruces even if the old script was moved to another document."); |
| |
| </script> |
| </body> |
