// Copyright 2017 the V8 project authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. // Flags: --expose-wasm --allow-natives-syntax load("test/mjsunit/wasm/wasm-constants.js"); load("test/mjsunit/wasm/wasm-module-builder.js"); function assertCompiles(buffer) { return assertPromiseResult( WebAssembly.compile(buffer), module => assertTrue(module instanceof WebAssembly.Module), ex => assertUnreachable); } function assertCompileError(buffer) { return assertPromiseResult( WebAssembly.compile(buffer), module => assertUnreachable, ex => assertTrue(ex instanceof WebAssembly.CompileError)); } assertPromiseResult(async function basicCompile() { let ok_buffer = (() => { var builder = new WasmModuleBuilder(); builder.addFunction('f', kSig_i_v) .addBody([kExprI32Const, 42]) .exportAs('f'); return builder.toBuffer(); })(); // The OK buffer validates and can be made into a module. assertTrue(WebAssembly.validate(ok_buffer)); let ok_module = new WebAssembly.Module(ok_buffer); assertTrue(ok_module instanceof WebAssembly.Module); // The bad buffer does not validate and cannot be made into a module. let bad_buffer = new ArrayBuffer(0); assertFalse(WebAssembly.validate(bad_buffer)); assertThrows( () => new WebAssembly.Module(bad_buffer), WebAssembly.CompileError); let kNumCompiles = 3; // Three compilations of the OK module should succeed. for (var i = 0; i < kNumCompiles; i++) { await assertCompiles(ok_buffer); } // Three compilations of the bad module should fail. for (var i = 0; i < kNumCompiles; i++) { await assertCompileError(bad_buffer); } }()); assertPromiseResult(async function badFunctionInTheMiddle() { // We had an error where an exception was generated by a background task and // later thrown in a foreground task. The handle to the exception died // inbetween, since the HandleScope was left. // This test reproduced that error. let builder = new WasmModuleBuilder(); let sig = builder.addType(kSig_i_v); for (var i = 0; i < 10; ++i) { builder.addFunction('a' + i, sig).addBody([kExprI32Const, 42]); } builder.addFunction('bad', sig).addBody([]); for (var i = 0; i < 10; ++i) { builder.addFunction('b' + i, sig).addBody([kExprI32Const, 42]); } let buffer = builder.toBuffer(); await assertCompileError(buffer); }());