path: root/js/src/jit-test/tests/wasm/jsapi.js

load(libdir + 'wasm.js');

const WasmPage = 64 * 1024;

const emptyModuleBinary = wasmTextToBinary('(module)');
const exportingModuleBinary = wasmTextToBinary('(module (func (export "f") (result i32) (i32.const 42)))');
const importingModuleBinary = wasmTextToBinary('(module (func (import "" "f")))');

// 'WebAssembly' data property on global object
const wasmDesc = Object.getOwnPropertyDescriptor(this, 'WebAssembly');
assertEq(typeof wasmDesc.value, "object");
assertEq(wasmDesc.writable, true);
assertEq(wasmDesc.enumerable, false);
assertEq(wasmDesc.configurable, true);

// 'WebAssembly' object
assertEq(WebAssembly, wasmDesc.value);
assertEq(String(WebAssembly), "[object WebAssembly]");

// 'WebAssembly.(Compile|Runtime)Error' data property
const compileErrorDesc = Object.getOwnPropertyDescriptor(WebAssembly, 'CompileError');
const runtimeErrorDesc = Object.getOwnPropertyDescriptor(WebAssembly, 'RuntimeError');
assertEq(typeof compileErrorDesc.value, "function");
assertEq(typeof runtimeErrorDesc.value, "function");
assertEq(compileErrorDesc.writable, true);
assertEq(runtimeErrorDesc.writable, true);
assertEq(compileErrorDesc.enumerable, false);
assertEq(runtimeErrorDesc.enumerable, false);
assertEq(compileErrorDesc.configurable, true);
assertEq(runtimeErrorDesc.configurable, true);

// 'WebAssembly.(Compile|Runtime)Error' constructor function
const CompileError = WebAssembly.CompileError;
const RuntimeError = WebAssembly.RuntimeError;
assertEq(CompileError, compileErrorDesc.value);
assertEq(RuntimeError, runtimeErrorDesc.value);
assertEq(CompileError.length, 1);
assertEq(RuntimeError.length, 1);
assertEq(CompileError.name, "CompileError");
assertEq(RuntimeError.name, "RuntimeError");

// 'WebAssembly.(Compile|Runtime)Error' instance objects
const compileError = new CompileError;
const runtimeError = new RuntimeError;
assertEq(compileError instanceof CompileError, true);
assertEq(runtimeError instanceof RuntimeError, true);
assertEq(compileError instanceof Error, true);
assertEq(runtimeError instanceof Error, true);
assertEq(compileError instanceof TypeError, false);
assertEq(runtimeError instanceof TypeError, false);
assertEq(compileError.message, "");
assertEq(runtimeError.message, "");
assertEq(new CompileError("hi").message, "hi");
assertEq(new RuntimeError("hi").message, "hi");

// 'WebAssembly.Module' data property
const moduleDesc = Object.getOwnPropertyDescriptor(WebAssembly, 'Module');
assertEq(typeof moduleDesc.value, "function");
assertEq(moduleDesc.writable, true);
assertEq(moduleDesc.enumerable, false);
assertEq(moduleDesc.configurable, true);

// 'WebAssembly.Module' constructor function
const Module = WebAssembly.Module;
assertEq(Module, moduleDesc.value);
assertEq(Module.length, 1);
assertEq(Module.name, "Module");
assertErrorMessage(() => Module(), TypeError, /constructor without new is forbidden/);
assertErrorMessage(() => new Module(), TypeError, /requires more than 0 arguments/);
assertErrorMessage(() => new Module(undefined), TypeError, "first argument must be an ArrayBuffer or typed array object");
assertErrorMessage(() => new Module(1), TypeError, "first argument must be an ArrayBuffer or typed array object");
assertErrorMessage(() => new Module({}), TypeError, "first argument must be an ArrayBuffer or typed array object");
assertErrorMessage(() => new Module(new Uint8Array()), CompileError, /failed to match magic number/);
assertErrorMessage(() => new Module(new ArrayBuffer()), CompileError, /failed to match magic number/);
assertEq(new Module(emptyModuleBinary) instanceof Module, true);
assertEq(new Module(emptyModuleBinary.buffer) instanceof Module, true);

// 'WebAssembly.Module.prototype' data property
const moduleProtoDesc = Object.getOwnPropertyDescriptor(Module, 'prototype');
assertEq(typeof moduleProtoDesc.value, "object");
assertEq(moduleProtoDesc.writable, false);
assertEq(moduleProtoDesc.enumerable, false);
assertEq(moduleProtoDesc.configurable, false);

// 'WebAssembly.Module.prototype' object
const moduleProto = Module.prototype;
assertEq(moduleProto, moduleProtoDesc.value);
assertEq(String(moduleProto), "[object Object]");
assertEq(Object.getPrototypeOf(moduleProto), Object.prototype);

// 'WebAssembly.Module' instance objects
const emptyModule = new Module(emptyModuleBinary);
const importingModule = new Module(importingModuleBinary);
const exportingModule = new Module(exportingModuleBinary);
assertEq(typeof emptyModule, "object");
assertEq(String(emptyModule), "[object WebAssembly.Module]");
assertEq(Object.getPrototypeOf(emptyModule), moduleProto);

// 'WebAssembly.Module.imports' data property
const moduleImportsDesc = Object.getOwnPropertyDescriptor(Module, 'imports');
assertEq(typeof moduleImportsDesc.value, "function");
assertEq(moduleImportsDesc.writable, true);
assertEq(moduleImportsDesc.enumerable, false);
assertEq(moduleImportsDesc.configurable, true);

// 'WebAssembly.Module.imports' method
const moduleImports = moduleImportsDesc.value;
assertEq(moduleImports.length, 1);
assertErrorMessage(() => moduleImports(), TypeError, /requires more than 0 arguments/);
assertErrorMessage(() => moduleImports(undefined), TypeError, /first argument must be a WebAssembly.Module/);
assertErrorMessage(() => moduleImports({}), TypeError, /first argument must be a WebAssembly.Module/);
var arr = moduleImports(new Module(wasmTextToBinary('(module)')));
assertEq(arr instanceof Array, true);
assertEq(arr.length, 0);
var arr = moduleImports(new Module(wasmTextToBinary('(module (func (import "a" "b")) (memory (import "c" "d") 1) (table (import "e" "f") 1 anyfunc) (global (import "g" "⚡") i32))')));
assertEq(arr instanceof Array, true);
assertEq(arr.length, 4);
assertEq(arr[0].kind, "function");
assertEq(arr[0].module, "a");
assertEq(arr[0].name, "b");
assertEq(arr[1].kind, "memory");
assertEq(arr[1].module, "c");
assertEq(arr[1].name, "d");
assertEq(arr[2].kind, "table");
assertEq(arr[2].module, "e");
assertEq(arr[2].name, "f");
assertEq(arr[3].kind, "global");
assertEq(arr[3].module, "g");
assertEq(arr[3].name, "⚡");

// 'WebAssembly.Module.exports' data property
const moduleExportsDesc = Object.getOwnPropertyDescriptor(Module, 'exports');
assertEq(typeof moduleExportsDesc.value, "function");
assertEq(moduleExportsDesc.writable, true);
assertEq(moduleExportsDesc.enumerable, false);
assertEq(moduleExportsDesc.configurable, true);

// 'WebAssembly.Module.exports' method
const moduleExports = moduleExportsDesc.value;
assertEq(moduleExports.length, 1);
assertErrorMessage(() => moduleExports(), TypeError, /requires more than 0 arguments/);
assertErrorMessage(() => moduleExports(undefined), TypeError, /first argument must be a WebAssembly.Module/);
assertErrorMessage(() => moduleExports({}), TypeError, /first argument must be a WebAssembly.Module/);
var arr = moduleExports(emptyModule);
assertEq(arr instanceof Array, true);
assertEq(arr.length, 0);
var arr = moduleExports(new Module(wasmTextToBinary('(module (func (export "a")) (memory (export "b") 1) (table (export "c") 1 anyfunc) (global (export "⚡") i32 (i32.const 0)))')));
assertEq(arr instanceof Array, true);
assertEq(arr.length, 4);
assertEq(arr[0].kind, "function");
assertEq(arr[0].name, "a");
assertEq(arr[1].kind, "memory");
assertEq(arr[1].name, "b");
assertEq(arr[2].kind, "table");
assertEq(arr[2].name, "c");
assertEq(arr[3].kind, "global");
assertEq(arr[3].name, "⚡");

// 'WebAssembly.Instance' data property
const instanceDesc = Object.getOwnPropertyDescriptor(WebAssembly, 'Instance');
assertEq(typeof instanceDesc.value, "function");
assertEq(instanceDesc.writable, true);
assertEq(instanceDesc.enumerable, false);
assertEq(instanceDesc.configurable, true);

// 'WebAssembly.Instance' constructor function
const Instance = WebAssembly.Instance;
assertEq(Instance, instanceDesc.value);
assertEq(Instance.length, 1);
assertEq(Instance.name, "Instance");
assertErrorMessage(() => Instance(), TypeError, /constructor without new is forbidden/);
assertErrorMessage(() => new Instance(1), TypeError, "first argument must be a WebAssembly.Module");
assertErrorMessage(() => new Instance({}), TypeError, "first argument must be a WebAssembly.Module");
assertErrorMessage(() => new Instance(emptyModule, null), TypeError, "second argument must be an object");
assertEq(new Instance(emptyModule) instanceof Instance, true);
assertEq(new Instance(emptyModule, {}) instanceof Instance, true);

// 'WebAssembly.Instance.prototype' data property
const instanceProtoDesc = Object.getOwnPropertyDescriptor(Instance, 'prototype');
assertEq(typeof instanceProtoDesc.value, "object");
assertEq(instanceProtoDesc.writable, false);
assertEq(instanceProtoDesc.enumerable, false);
assertEq(instanceProtoDesc.configurable, false);

// 'WebAssembly.Instance.prototype' object
const instanceProto = Instance.prototype;
assertEq(instanceProto, instanceProtoDesc.value);
assertEq(String(instanceProto), "[object Object]");
assertEq(Object.getPrototypeOf(instanceProto), Object.prototype);

// 'WebAssembly.Instance' instance objects
const exportingInstance = new Instance(exportingModule);
assertEq(typeof exportingInstance, "object");
assertEq(String(exportingInstance), "[object WebAssembly.Instance]");
assertEq(Object.getPrototypeOf(exportingInstance), instanceProto);

// 'WebAssembly.Instance' 'exports' data property
const instanceExportsDesc = Object.getOwnPropertyDescriptor(exportingInstance, 'exports');
assertEq(typeof instanceExportsDesc.value, "object");
assertEq(instanceExportsDesc.writable, true);
assertEq(instanceExportsDesc.enumerable, true);
assertEq(instanceExportsDesc.configurable, true);

// 'WebAssembly.Instance' 'exports' object
const exportsObj = exportingInstance.exports;
assertEq(typeof exportsObj, "object");
assertEq(Object.isExtensible(exportsObj), false);
assertEq(Object.getPrototypeOf(exportsObj), null);
assertEq(Object.keys(exportsObj).join(), "f");
exportsObj.g = 1;
assertEq(Object.keys(exportsObj).join(), "f");
assertErrorMessage(() => Object.setPrototypeOf(exportsObj, {}), TypeError, /can't set prototype of this object/);
assertEq(Object.getPrototypeOf(exportsObj), null);
assertErrorMessage(() => Object.defineProperty(exportsObj, 'g', {}), TypeError, /Object is not extensible/);
assertEq(Object.keys(exportsObj).join(), "f");

// Exported WebAssembly functions
const f = exportsObj.f;
assertEq(f instanceof Function, true);
assertEq(f.length, 0);
assertEq('name' in f, true);
assertEq(Function.prototype.call.call(f), 42);
assertErrorMessage(() => new f(), TypeError, /is not a constructor/);

// 'WebAssembly.Memory' data property
const memoryDesc = Object.getOwnPropertyDescriptor(WebAssembly, 'Memory');
assertEq(typeof memoryDesc.value, "function");
assertEq(memoryDesc.writable, true);
assertEq(memoryDesc.enumerable, false);
assertEq(memoryDesc.configurable, true);

// 'WebAssembly.Memory' constructor function
const Memory = WebAssembly.Memory;
assertEq(Memory, memoryDesc.value);
assertEq(Memory.length, 1);
assertEq(Memory.name, "Memory");
assertErrorMessage(() => Memory(), TypeError, /constructor without new is forbidden/);
assertErrorMessage(() => new Memory(1), TypeError, "first argument must be a memory descriptor");
assertErrorMessage(() => new Memory({initial:{valueOf() { throw new Error("here")}}}), Error, "here");
assertErrorMessage(() => new Memory({initial:-1}), RangeError, /bad Memory initial size/);
assertErrorMessage(() => new Memory({initial:Math.pow(2,32)}), RangeError, /bad Memory initial size/);
assertErrorMessage(() => new Memory({initial:1, maximum: Math.pow(2,32)/Math.pow(2,14) }), RangeError, /bad Memory maximum size/);
assertErrorMessage(() => new Memory({initial:2, maximum:1 }), RangeError, /bad Memory maximum size/);
assertErrorMessage(() => new Memory({maximum: -1 }), RangeError, /bad Memory maximum size/);
assertEq(new Memory({initial:1}) instanceof Memory, true);
assertEq(new Memory({initial:1.5}).buffer.byteLength, WasmPage);

// 'WebAssembly.Memory.prototype' data property
const memoryProtoDesc = Object.getOwnPropertyDescriptor(Memory, 'prototype');
assertEq(typeof memoryProtoDesc.value, "object");
assertEq(memoryProtoDesc.writable, false);
assertEq(memoryProtoDesc.enumerable, false);
assertEq(memoryProtoDesc.configurable, false);

// 'WebAssembly.Memory.prototype' object
const memoryProto = Memory.prototype;
assertEq(memoryProto, memoryProtoDesc.value);
assertEq(String(memoryProto), "[object Object]");
assertEq(Object.getPrototypeOf(memoryProto), Object.prototype);

// 'WebAssembly.Memory' instance objects
const mem1 = new Memory({initial:1});
assertEq(typeof mem1, "object");
assertEq(String(mem1), "[object WebAssembly.Memory]");
assertEq(Object.getPrototypeOf(mem1), memoryProto);

// 'WebAssembly.Memory.prototype.buffer' accessor property
const bufferDesc = Object.getOwnPropertyDescriptor(memoryProto, 'buffer');
assertEq(typeof bufferDesc.get, "function");
assertEq(bufferDesc.set, undefined);
assertEq(bufferDesc.enumerable, false);
assertEq(bufferDesc.configurable, true);

// 'WebAssembly.Memory.prototype.buffer' getter
const bufferGetter = bufferDesc.get;
assertErrorMessage(() => bufferGetter.call(), TypeError, /called on incompatible undefined/);
assertErrorMessage(() => bufferGetter.call({}), TypeError, /called on incompatible Object/);
assertEq(bufferGetter.call(mem1) instanceof ArrayBuffer, true);
assertEq(bufferGetter.call(mem1).byteLength, WasmPage);

// 'WebAssembly.Memory.prototype.grow' data property
const memGrowDesc = Object.getOwnPropertyDescriptor(memoryProto, 'grow');
assertEq(typeof memGrowDesc.value, "function");
assertEq(memGrowDesc.enumerable, false);
assertEq(memGrowDesc.configurable, true);

// 'WebAssembly.Memory.prototype.grow' method
const memGrow = memGrowDesc.value;
assertEq(memGrow.length, 1);
assertErrorMessage(() => memGrow.call(), TypeError, /called on incompatible undefined/);
assertErrorMessage(() => memGrow.call({}), TypeError, /called on incompatible Object/);
assertErrorMessage(() => memGrow.call(mem1, -1), RangeError, /bad Memory grow delta/);
assertErrorMessage(() => memGrow.call(mem1, Math.pow(2,32)), RangeError, /bad Memory grow delta/);
var mem = new Memory({initial:1, maximum:2});
var buf = mem.buffer;
assertEq(buf.byteLength, WasmPage);
assertEq(mem.grow(0), 1);
assertEq(buf !== mem.buffer, true);
assertEq(buf.byteLength, 0);
buf = mem.buffer;
assertEq(buf.byteLength, WasmPage);
assertEq(mem.grow(1), 1);
assertEq(buf !== mem.buffer, true);
assertEq(buf.byteLength, 0);
buf = mem.buffer;
assertEq(buf.byteLength, 2 * WasmPage);
assertErrorMessage(() => mem.grow(1), Error, /failed to grow memory/);
assertEq(buf, mem.buffer);

// 'WebAssembly.Table' data property
const tableDesc = Object.getOwnPropertyDescriptor(WebAssembly, 'Table');
assertEq(typeof tableDesc.value, "function");
assertEq(tableDesc.writable, true);
assertEq(tableDesc.enumerable, false);
assertEq(tableDesc.configurable, true);

// 'WebAssembly.Table' constructor function
const Table = WebAssembly.Table;
assertEq(Table, tableDesc.value);
assertEq(Table.length, 1);
assertEq(Table.name, "Table");
assertErrorMessage(() => Table(), TypeError, /constructor without new is forbidden/);
assertErrorMessage(() => new Table(1), TypeError, "first argument must be a table descriptor");
assertErrorMessage(() => new Table({initial:1, element:1}), TypeError, /must be "anyfunc"/);
assertErrorMessage(() => new Table({initial:1, element:"any"}), TypeError, /must be "anyfunc"/);
assertErrorMessage(() => new Table({initial:1, element:{valueOf() { return "anyfunc" }}}), TypeError, /must be "anyfunc"/);
assertErrorMessage(() => new Table({initial:{valueOf() { throw new Error("here")}}, element:"anyfunc"}), Error, "here");
assertErrorMessage(() => new Table({initial:-1, element:"anyfunc"}), RangeError, /bad Table initial size/);
assertErrorMessage(() => new Table({initial:Math.pow(2,32), element:"anyfunc"}), RangeError, /bad Table initial size/);
assertErrorMessage(() => new Table({initial:2, maximum:1, element:"anyfunc"}), RangeError, /bad Table maximum size/);
assertErrorMessage(() => new Table({initial:2, maximum:Math.pow(2,32), element:"anyfunc"}), RangeError, /bad Table maximum size/);
assertEq(new Table({initial:1, element:"anyfunc"}) instanceof Table, true);
assertEq(new Table({initial:1.5, element:"anyfunc"}) instanceof Table, true);
assertEq(new Table({initial:1, maximum:1.5, element:"anyfunc"}) instanceof Table, true);
assertEq(new Table({initial:1, maximum:Math.pow(2,32)-1, element:"anyfunc"}) instanceof Table, true);

// 'WebAssembly.Table.prototype' data property
const tableProtoDesc = Object.getOwnPropertyDescriptor(Table, 'prototype');
assertEq(typeof tableProtoDesc.value, "object");
assertEq(tableProtoDesc.writable, false);
assertEq(tableProtoDesc.enumerable, false);
assertEq(tableProtoDesc.configurable, false);

// 'WebAssembly.Table.prototype' object
const tableProto = Table.prototype;
assertEq(tableProto, tableProtoDesc.value);
assertEq(String(tableProto), "[object Object]");
assertEq(Object.getPrototypeOf(tableProto), Object.prototype);

// 'WebAssembly.Table' instance objects
const tbl1 = new Table({initial:2, element:"anyfunc"});
assertEq(typeof tbl1, "object");
assertEq(String(tbl1), "[object WebAssembly.Table]");
assertEq(Object.getPrototypeOf(tbl1), tableProto);

// 'WebAssembly.Table.prototype.length' accessor data property
const lengthDesc = Object.getOwnPropertyDescriptor(tableProto, 'length');
assertEq(typeof lengthDesc.get, "function");
assertEq(lengthDesc.set, undefined);
assertEq(lengthDesc.enumerable, false);
assertEq(lengthDesc.configurable, true);

// 'WebAssembly.Table.prototype.length' getter
const lengthGetter = lengthDesc.get;
assertEq(lengthGetter.length, 0);
assertErrorMessage(() => lengthGetter.call(), TypeError, /called on incompatible undefined/);
assertErrorMessage(() => lengthGetter.call({}), TypeError, /called on incompatible Object/);
assertEq(typeof lengthGetter.call(tbl1), "number");
assertEq(lengthGetter.call(tbl1), 2);

// 'WebAssembly.Table.prototype.get' data property
const getDesc = Object.getOwnPropertyDescriptor(tableProto, 'get');
assertEq(typeof getDesc.value, "function");
assertEq(getDesc.enumerable, false);
assertEq(getDesc.configurable, true);

// 'WebAssembly.Table.prototype.get' method
const get = getDesc.value;
assertEq(get.length, 1);
assertErrorMessage(() => get.call(), TypeError, /called on incompatible undefined/);
assertErrorMessage(() => get.call({}), TypeError, /called on incompatible Object/);
assertEq(get.call(tbl1, 0), null);
assertEq(get.call(tbl1, 1), null);
assertEq(get.call(tbl1, 1.5), null);
assertErrorMessage(() => get.call(tbl1, 2), RangeError, /bad Table get index/);
assertErrorMessage(() => get.call(tbl1, 2.5), RangeError, /bad Table get index/);
assertErrorMessage(() => get.call(tbl1, -1), RangeError, /bad Table get index/);
assertErrorMessage(() => get.call(tbl1, Math.pow(2,33)), RangeError, /bad Table get index/);
assertErrorMessage(() => get.call(tbl1, {valueOf() { throw new Error("hi") }}), Error, "hi");

// 'WebAssembly.Table.prototype.set' data property
const setDesc = Object.getOwnPropertyDescriptor(tableProto, 'set');
assertEq(typeof setDesc.value, "function");
assertEq(setDesc.enumerable, false);
assertEq(setDesc.configurable, true);

// 'WebAssembly.Table.prototype.set' method
const set = setDesc.value;
assertEq(set.length, 2);
assertErrorMessage(() => set.call(), TypeError, /called on incompatible undefined/);
assertErrorMessage(() => set.call({}), TypeError, /called on incompatible Object/);
assertErrorMessage(() => set.call(tbl1, 0), TypeError, /requires more than 1 argument/);
assertErrorMessage(() => set.call(tbl1, 2, null), RangeError, /bad Table set index/);
assertErrorMessage(() => set.call(tbl1, -1, null), RangeError, /bad Table set index/);
assertErrorMessage(() => set.call(tbl1, Math.pow(2,33), null), RangeError, /bad Table set index/);
assertErrorMessage(() => set.call(tbl1, 0, undefined), TypeError, /can only assign WebAssembly exported functions to Table/);
assertErrorMessage(() => set.call(tbl1, 0, {}), TypeError, /can only assign WebAssembly exported functions to Table/);
assertErrorMessage(() => set.call(tbl1, 0, function() {}), TypeError, /can only assign WebAssembly exported functions to Table/);
assertErrorMessage(() => set.call(tbl1, 0, Math.sin), TypeError, /can only assign WebAssembly exported functions to Table/);
assertErrorMessage(() => set.call(tbl1, {valueOf() { throw Error("hai") }}, null), Error, "hai");
assertEq(set.call(tbl1, 0, null), undefined);
assertEq(set.call(tbl1, 1, null), undefined);

// 'WebAssembly.Table.prototype.grow' data property
const tblGrowDesc = Object.getOwnPropertyDescriptor(tableProto, 'grow');
assertEq(typeof tblGrowDesc.value, "function");
assertEq(tblGrowDesc.enumerable, false);
assertEq(tblGrowDesc.configurable, true);

// 'WebAssembly.Table.prototype.grow' method
const tblGrow = tblGrowDesc.value;
assertEq(tblGrow.length, 1);
assertErrorMessage(() => tblGrow.call(), TypeError, /called on incompatible undefined/);
assertErrorMessage(() => tblGrow.call({}), TypeError, /called on incompatible Object/);
assertErrorMessage(() => tblGrow.call(tbl1, -1), RangeError, /bad Table grow delta/);
assertErrorMessage(() => tblGrow.call(tbl1, Math.pow(2,32)), RangeError, /bad Table grow delta/);
var tbl = new Table({element:"anyfunc", initial:1, maximum:2});
assertEq(tbl.length, 1);
assertEq(tbl.grow(0), 1);
assertEq(tbl.length, 1);
assertEq(tbl.grow(1), 1);
assertEq(tbl.length, 2);
assertErrorMessage(() => tbl.grow(1), Error, /failed to grow table/);

// 'WebAssembly.compile' data property
const compileDesc = Object.getOwnPropertyDescriptor(WebAssembly, 'compile');
assertEq(typeof compileDesc.value, "function");
assertEq(compileDesc.writable, true);
assertEq(compileDesc.enumerable, false);
assertEq(compileDesc.configurable, true);

// 'WebAssembly.compile' function
const compile = WebAssembly.compile;
assertEq(compile, compileDesc.value);
assertEq(compile.length, 1);
assertEq(compile.name, "compile");
function assertCompileError(args, err, msg) {
    var error = null;
    compile(...args).catch(e => error = e);
    drainJobQueue();
    assertEq(error instanceof err, true);
    assertEq(Boolean(error.stack.match("jsapi.js")), true);
    assertEq(Boolean(error.message.match(msg)), true);
}
assertCompileError([], TypeError, /requires more than 0 arguments/);
assertCompileError([undefined], TypeError, /first argument must be an ArrayBuffer or typed array object/);
assertCompileError([1], TypeError, /first argument must be an ArrayBuffer or typed array object/);
assertCompileError([{}], TypeError, /first argument must be an ArrayBuffer or typed array object/);
assertCompileError([new Uint8Array()], CompileError, /failed to match magic number/);
assertCompileError([new ArrayBuffer()], CompileError, /failed to match magic number/);
function assertCompileSuccess(bytes) {
    var module = null;
    compile(bytes).then(m => module = m);
    drainJobQueue();
    assertEq(module instanceof Module, true);
}
assertCompileSuccess(emptyModuleBinary);
assertCompileSuccess(emptyModuleBinary.buffer);

// 'WebAssembly.instantiate' data property
const instantiateDesc = Object.getOwnPropertyDescriptor(WebAssembly, 'instantiate');
assertEq(typeof instantiateDesc.value, "function");
assertEq(instantiateDesc.writable, true);
assertEq(instantiateDesc.enumerable, false);
assertEq(instantiateDesc.configurable, true);

// 'WebAssembly.instantiate' function
const instantiate = WebAssembly.instantiate;
assertEq(instantiate, instantiateDesc.value);
assertEq(instantiate.length, 2);
assertEq(instantiate.name, "instantiate");
function assertInstantiateError(args, err, msg) {
    var error = null;
    instantiate(...args).catch(e => error = e);
    drainJobQueue();
    assertEq(error instanceof err, true);
    assertEq(Boolean(error.stack.match("jsapi.js")), true);
    assertEq(Boolean(error.message.match(msg)), true);
}
assertInstantiateError([], TypeError, /requires more than 0 arguments/);
assertInstantiateError([undefined], TypeError, /first argument must be a WebAssembly.Module, ArrayBuffer or typed array object/);
assertInstantiateError([1], TypeError, /first argument must be a WebAssembly.Module, ArrayBuffer or typed array object/);
assertInstantiateError([{}], TypeError, /first argument must be a WebAssembly.Module, ArrayBuffer or typed array object/);
assertInstantiateError([new Uint8Array()], CompileError, /failed to match magic number/);
assertInstantiateError([new ArrayBuffer()], CompileError, /failed to match magic number/);
assertInstantiateError([importingModule], TypeError, /second argument must be an object/);
assertInstantiateError([importingModule, null], TypeError, /second argument must be an object/);
assertInstantiateError([importingModuleBinary, null], TypeError, /second argument must be an object/);
function assertInstantiateSuccess(module, imports) {
    var result = null;
    instantiate(module, imports).then(r => result = r);
    drainJobQueue();
    if (module instanceof Module) {
        assertEq(result instanceof Instance, true);
    } else {
        assertEq(result.module instanceof Module, true);
        assertEq(result.instance instanceof Instance, true);
    }
}
assertInstantiateSuccess(emptyModule);
assertInstantiateSuccess(emptyModuleBinary);
assertInstantiateSuccess(emptyModuleBinary.buffer);
assertInstantiateSuccess(importingModule, {"":{f:()=>{}}});
assertInstantiateSuccess(importingModuleBinary, {"":{f:()=>{}}});
assertInstantiateSuccess(importingModuleBinary.buffer, {"":{f:()=>{}}});