// 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");