| // META: global=window,dedicatedworker,jsshell |
| // META: script=/wasm/jsapi/wasm-module-builder.js |
| |
| test(() => { |
| const emptyModuleBinary = new WasmModuleBuilder().toBuffer(); |
| const module = new WebAssembly.Module(emptyModuleBinary); |
| const instance = new WebAssembly.Instance(module); |
| assert_class_string(instance, "WebAssembly.Instance"); |
| }, "Object.prototype.toString on an Instance"); |
| |
| test(() => { |
| assert_own_property(WebAssembly.Instance.prototype, Symbol.toStringTag); |
| |
| const propDesc = Object.getOwnPropertyDescriptor(WebAssembly.Instance.prototype, Symbol.toStringTag); |
| assert_equals(propDesc.value, "WebAssembly.Instance", "value"); |
| assert_equals(propDesc.configurable, true, "configurable"); |
| assert_equals(propDesc.enumerable, false, "enumerable"); |
| assert_equals(propDesc.writable, false, "writable"); |
| }, "@@toStringTag exists on the prototype with the appropriate descriptor"); |