| <!doctype html> |
| <title>Preload source phase modules</title> |
| |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <body> |
| <script> |
| function verifyNumberOfDownloads(url, number, allowTransferSizeOfZero = false) { |
| var numDownloads = 0; |
| let absoluteURL = new URL(url, location.href).href; |
| performance.getEntriesByName(absoluteURL).forEach(entry => { |
| if (entry.transferSize > 0 || allowTransferSizeOfZero) { |
| numDownloads++; |
| } |
| }); |
| assert_equals(numDownloads, number, url); |
| } |
| |
| function attachAndWaitForLoad(element) { |
| return new Promise((resolve, reject) => { |
| element.onload = resolve; |
| element.onerror = reject; |
| document.body.appendChild(element); |
| }); |
| } |
| |
| promise_test(function(t) { |
| var link = document.createElement('link'); |
| link.rel = 'modulepreload'; |
| link.href = 'resources/exported-names.wasm'; |
| return attachAndWaitForLoad(link).then(() => { |
| verifyNumberOfDownloads('resources/exported-names.wasm', 1); |
| let promise = new Promise((resolve) => {window.resolveStatic = resolve}); |
| // Verify that <script> doesn't fetch the module again. |
| var script = document.createElement('script'); |
| script.type = 'module'; |
| script.text = "import source exportedNamesSource from './resources/exported-names.wasm'; window.resolveStatic()"; |
| document.body.appendChild(script); |
| return promise; |
| }).then(() => { |
| verifyNumberOfDownloads('resources/exported-names.wasm', 1); |
| }) |
| }, 'Static source phase import.'); |
| |
| promise_test(function(t) { |
| var link = document.createElement('link'); |
| link.rel = 'modulepreload'; |
| link.href = 'resources/execute-start.wasm'; |
| return attachAndWaitForLoad(link).then(() => { |
| verifyNumberOfDownloads('resources/execute-start.wasm', 1); |
| let promise = new Promise((resolve) => {window.resolveDynamic = resolve}); |
| // Verify that <script> doesn't fetch the module again. |
| var script = document.createElement('script'); |
| script.type = 'module'; |
| script.text = "await import.source('./resources/execute-start.wasm'); window.resolveDynamic();"; |
| document.body.appendChild(script); |
| return promise; |
| }).then(() => { |
| verifyNumberOfDownloads('resources/execute-start.wasm', 1); |
| }) |
| }, 'Dynamic source phase import.'); |
| |
| </script> |
| </body> |
