[wasm] include JS conformance tests in Wasm mjsunit tests

BUG=

Review-Url: https://codereview.chromium.org/2660903003
Cr-Commit-Position: refs/heads/master@{#42821}

.gitignore

@@ -98,3 +98,4 @@ v8.ignition_dispatches_table.json
 /test/fuzzer/wasm_asmjs.tar.gz
 /src/inspector/build/closure-compiler.tar.gz
 /src/inspector/build/closure-compiler
+/test/wasm-js

DEPS

@@ -40,6 +40,10 @@ deps = {
     Var("chromium_url") + "/external/github.com/test262-utils/test262-harness-py.git" + "@" + "0f2acdd882c84cff43b9d60df7574a1901e2cdcd",
   "v8/tools/clang":
     Var("chromium_url") + "/chromium/src/tools/clang.git" + "@" + "960cc3ec8c679adad9b6f9019f737c8cd9ad0a75",
+# TODO(eholk): once the Wasm JS API Conformance Suite is finalized, mirror it in
+# a chromium repo like the other deps.
+  "v8/test/wasm-js":
+    "https://github.com/bnjbvr/wasm-spec.git" + "@" + "190bd270e148a532082f6eb1b97dea5302800485",
 }
 
 deps_os = {

test/mjsunit/mjsunit.isolate

@@ -14,7 +14,8 @@
       '../../tools/profviz/composer.js',
       '../../tools/splaytree.js',
       '../../tools/tickprocessor.js',
-      '../../tools/dumpcpp.js'
+      '../../tools/dumpcpp.js',
+      '../wasm-js/',
     ],
   },
   'includes': [

test/mjsunit/wasm/jsapi-harness.js

@@ -0,0 +1,78 @@
+// 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.
+
+// TODO(eholk): Once we have stable test IDs, use those as the key instead.
+// See https://github.com/WebAssembly/spec/issues/415
+const known_failures = {
+  "'WebAssembly.Module.customSections' method":
+    'https://bugs.chromium.org/p/v8/issues/detail?id=5815',
+  "'WebAssembly.Table.prototype.get' method":
+    'https://bugs.chromium.org/p/v8/issues/detail?id=5507',
+  "'WebAssembly.Table.prototype.set' method":
+    'https://bugs.chromium.org/p/v8/issues/detail?id=5507',
+};
+
+let failures = [];
+
+let last_promise = new Promise((resolve, reject) => { resolve(); });
+
+function test(func, description) {
+  let maybeErr;
+  try { func(); }
+  catch(e) { maybeErr = e; }
+  if (typeof maybeErr !== 'undefined') {
+    print(`${description}: FAIL. ${maybeErr}`);
+    failures.push(description);
+  } else {
+    print(`${description}: PASS.`);
+  }
+}
+
+function promise_test(func, description) {
+  last_promise = last_promise.then(func)
+  .then(_ => { print(`${description}: PASS.`); })
+  .catch(err => {
+    print(`${description}: FAIL. ${err}`);
+    failures.push(description);
+  });
+}
+
+let assert_equals = assertEquals;
+let assert_true = assertEquals.bind(null, true);
+let assert_false = assertEquals.bind(null, false);
+
+function assert_unreached(description) {
+  throw new Error(`unreachable:\n${description}`);
+}
+
+function assertErrorMessage(f, ctor, test) {
+  try { f(); }
+  catch (e) {
+    assert_true(e instanceof ctor, "expected exception " + ctor.name + ", got " + e);
+    return;
+  }
+  assert_true(false, "expected exception " + ctor.name + ", no exception thrown");
+};
+
+load("test/wasm-js/test/lib/wasm-constants.js");
+load("test/wasm-js/test/lib/wasm-module-builder.js");
+load("test/wasm-js/test/js-api/jsapi.js");
+
+last_promise.then(_ => {
+  if (failures.length > 0) {
+    let unexpected = false;
+    print("Some tests FAILED:");
+    for (let i in failures) {
+      if (known_failures[failures[i]]) {
+        print(`  ${failures[i]} [KNOWN: ${known_failures[failures[i]]}]`);
+      } else {
+        print(`  ${failures[i]}`);
+        unexpected = true;
+      }
+    }
+    if (unexpected) {
+      quit(1);
+    }
+  }
+});