| <!DOCTYPE html> |
| <!-- |
| Copyright 2023 The Cobalt Authors. All Rights Reserved. |
| |
| Licensed under the Apache License, Version 2.0 (the "License"); |
| you may not use this file except in compliance with the License. |
| You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| --> |
| |
| <head> |
| <title>Cobalt WASM Basic Test</title> |
| <script src='black_box_js_test_utils.js'></script> |
| </head> |
| |
| <body> |
| <script> |
| const fail = msg => { |
| if (msg) { |
| console.error(msg); |
| } |
| notReached(); |
| }; |
| const timeoutId = setTimeout(fail, 3000); |
| const success = () => { |
| clearTimeout(timeoutId); |
| onEndTest(); |
| }; |
| |
| const Module = {}; |
| |
| const noop = () => {}; |
| const wasmImports = { |
| emscripten_notify_memory_growth: () => { |
| if (!Module.asm || !Module.asm.memory) { |
| return; |
| } |
| Module.HEAPU8 = new Uint8Array(Module.asm.memory.buffer); |
| }, |
| fd_close: noop, |
| fd_seek: noop, |
| fd_write: noop, |
| proc_exit: noop, |
| }; |
| const importObject = { |
| env: wasmImports, |
| wasi_snapshot_preview1: wasmImports, |
| }; |
| |
| const stringFromHeap = stringPointer => { |
| const heap = Module.HEAPU8; |
| let endPointer = stringPointer; |
| // Find null terminating character. |
| while (heap[endPointer]) ++endPointer; |
| return (new TextDecoder('utf8')).decode(heap.subarray(stringPointer, endPointer)); |
| } |
| |
| fetch('wasm_basic_test.wasm') |
| .then(response => response.arrayBuffer()) |
| .then(bufferSource => WebAssembly.instantiate(bufferSource, importObject)) |
| .then(({instance}) => { |
| Module.asm = instance.exports; |
| wasmImports.emscripten_notify_memory_growth(); |
| assertEqual(3, Module.asm.add(1, 2)); |
| // Include space for null terminating byte. |
| const helloStringPointer = Module.asm.malloc(7); |
| Module.asm.getHello(helloStringPointer); |
| assertEqual("Hello.", stringFromHeap(helloStringPointer)); |
| Module.asm.free(helloStringPointer); |
| success(); |
| }) |
| .catch(fail); |
| |
| setupFinished(); |
| </script> |
| </body> |
