v8/test/mjsunit/wasm/streaming-api.js

// Copyright 2019 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: --wasm-test-streaming

load("test/mjsunit/wasm/wasm-module-builder.js");

(function TestCompileStreaming() {
  print(arguments.callee.name);
  let builder = new WasmModuleBuilder();
  builder.addFunction("main", kSig_i_i)
         .addBody([kExprGetLocal, 0])
         .exportAs("main");
  let bytes = builder.toBuffer();
  assertPromiseResult(WebAssembly.compileStreaming(Promise.resolve(bytes)).then(
    module => WebAssembly.instantiate(module)).then(
      instance => assertEquals(5, instance.exports.main(5))));
})();

(function TestInstantiateStreaming() {
  print(arguments.callee.name);
  let builder = new WasmModuleBuilder();
  builder.addFunction("main", kSig_i_i)
         .addBody([kExprGetLocal, 0])
         .exportAs("main");
  let bytes = builder.toBuffer();
  assertPromiseResult(WebAssembly.instantiateStreaming(Promise.resolve(bytes)).then(
    ({module, instance}) => assertEquals(5, instance.exports.main(5))));
})();

(function TestCompileStreamingRejectedInputPromise() {
  print(arguments.callee.name);
  assertPromiseResult(WebAssembly.compileStreaming(Promise.reject("myError")),
    assertUnreachable,
    error => assertEquals(error, "myError"));
})();

(function TestInstantiateStreamingRejectedInputPromise() {
  print(arguments.callee.name);
  assertPromiseResult(WebAssembly.instantiateStreaming(Promise.reject("myError")),
    assertUnreachable,
    error => assertEquals(error, "myError"));
})();

(function TestStreamingErrorMessage() {
  print(arguments.callee.name);
  let builder = new WasmModuleBuilder();
  builder.addFunction("main", kSig_i_i)
         .addBody([kExprGetLocal, 0,
                   kExprGetLocal, 0,
                   kExprF32Mul])
         .exportAs("main");
  let bytes = builder.toBuffer();
  assertPromiseResult(WebAssembly.compileStreaming(Promise.resolve(bytes)),
    assertUnreachable,
    error => assertEquals("WebAssembly.compileStreaming(): Compiling " +
                          "function #0:\"main\" failed: f32.mul[1] expected " +
                          "type f32, found get_local of type i32 @+37",
                          error.message));
  assertPromiseResult(WebAssembly.instantiateStreaming(Promise.resolve(bytes)),
    assertUnreachable,
    error => assertEquals("WebAssembly.instantiateStreaming(): Compiling " +
                          "function #0:\"main\" failed: f32.mul[1] expected " +
                          "type f32, found get_local of type i32 @+37",
                          error.message));
})();