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How to use evalInRealmAndReturn method in wpt

Best JavaScript code snippet using wpt

realms.window.js

Source:realms.window.js

...76  await waitOn;77}78// The same as evalInRealmAndWait but returns the result of evaluating "code" as79// an expression.80async function evalInRealmAndReturn(realm, code) {81  const myId = id();82  await evalInRealmAndWait(realm, `window.${myId} = ${code};`);83  return realm[myId];84}85// Constructs an object in constructedRealm and copies it into readRealm and86// writeRealm. Returns the id that can be used to access the object in those87// realms. |what| can contain constructor arguments.88async function constructAndStore(what) {89  const objId = id();90  // Call |constructorRealm|'s constructor from inside |constructedRealm|.91  writeRealm[objId] = await evalInRealmAndReturn(92      constructedRealm, `new parent.constructorRealm.${what}`);93  readRealm[objId] = writeRealm[objId];94  return objId;95}96// Calls read() on the readable side of the TransformStream stored in97// readRealm[objId]. Locks the readable side as a side-effect.98function readInReadRealm(objId) {99  return evalInRealmAndReturn(readRealm, `100parent.readMethod.call(window.${objId}.readable.getReader())`);101}102// Calls write() on the writable side of the TransformStream stored in103// writeRealm[objId], passing |value|. Locks the writable side as a104// side-effect.105function writeInWriteRealm(objId, value) {106  const valueId = id();107  writeRealm[valueId] = value;108  return evalInRealmAndReturn(writeRealm, `109parent.writeMethod.call(window.${objId}.writable.getWriter(),110                        window.${valueId})`);111}112window.onload = () => {113  createRealms().then(() => {114    runGenericTests('TextEncoderStream');115    runTextEncoderStreamTests();116    runGenericTests('TextDecoderStream');117    runTextDecoderStreamTests();118    done();119  });120};121function runGenericTests(classname) {122  promise_test(async () => {123    const obj = await evalInRealmAndReturn(124        constructedRealm, `new parent.constructorRealm.${classname}()`);125    assert_equals(obj.constructor, constructorRealm[classname],126                  'obj should be in constructor realm');127  }, `a ${classname} object should be associated with the realm the ` +128     'constructor came from');129  promise_test(async () => {130    const objId = await constructAndStore(classname);131    const readableGetterId = id();132    readRealm[readableGetterId] = Object.getOwnPropertyDescriptor(133        methodRealm[classname].prototype, 'readable').get;134    const writableGetterId = id();135    writeRealm[writableGetterId] = Object.getOwnPropertyDescriptor(136        methodRealm[classname].prototype, 'writable').get;137    const readable = await evalInRealmAndReturn(138        readRealm, `${readableGetterId}.call(${objId})`);139    const writable = await evalInRealmAndReturn(140        writeRealm, `${writableGetterId}.call(${objId})`);141    assert_equals(readable.constructor, constructorRealm.ReadableStream,142                  'readable should be in constructor realm');143    assert_equals(writable.constructor, constructorRealm.WritableStream,144                  'writable should be in constructor realm');145  }, `${classname}'s readable and writable attributes should come from the ` +146     'same realm as the constructor definition');147}148function runTextEncoderStreamTests() {149  promise_test(async () => {150    const objId = await constructAndStore('TextEncoderStream');151    const writePromise = writeInWriteRealm(objId, 'A');152    const result = await readInReadRealm(objId);153    await writePromise;154    assert_equals(result.constructor, constructorRealm.Object,155                  'result should be in constructor realm');156    assert_equals(result.value.constructor, constructorRealm.Uint8Array,157                  'chunk should be in constructor realm');158  }, 'the output chunks when read is called after write should come from the ' +159     'same realm as the constructor of TextEncoderStream');160  promise_test(async () => {161    const objId = await constructAndStore('TextEncoderStream');162    const chunkPromise = readInReadRealm(objId);163    writeInWriteRealm(objId, 'A');164    // Now the read() should resolve.165    const result = await chunkPromise;166    assert_equals(result.constructor, constructorRealm.Object,167                  'result should be in constructor realm');168    assert_equals(result.value.constructor, constructorRealm.Uint8Array,169                  'chunk should be in constructor realm');170  }, 'the output chunks when write is called with a pending read should come ' +171     'from the same realm as the constructor of TextEncoderStream');172  // There is not absolute consensus regarding what realm exceptions should be173  // created in. Implementations may vary. The expectations in exception-related174  // tests may change in future once consensus is reached.175  promise_test(async t => {176    const objId = await constructAndStore('TextEncoderStream');177    // Read first to relieve backpressure.178    const readPromise = readInReadRealm(objId);179    await promise_rejects_js(t, constructorRealm.TypeError,180                             writeInWriteRealm(objId, {181                               toString() { return {}; }182                             }),183                             'write TypeError should come from constructor realm');184    return promise_rejects_js(t, constructorRealm.TypeError, readPromise,185                              'read TypeError should come from constructor realm');186  }, 'TypeError for unconvertable chunk should come from constructor realm ' +187     'of TextEncoderStream');188}189function runTextDecoderStreamTests() {190  promise_test(async () => {191    const objId = await constructAndStore('TextDecoderStream');192    const writePromise = writeInWriteRealm(objId, new Uint8Array([65]));193    const result = await readInReadRealm(objId);194    await writePromise;195    assert_equals(result.constructor, constructorRealm.Object,196                  'result should be in constructor realm');197    // A string is not an object, so doesn't have an associated realm. Accessing198    // string properties will create a transient object wrapper belonging to the199    // current realm. So checking the realm of result.value is not useful.200  }, 'the result object when read is called after write should come from the ' +201     'same realm as the constructor of TextDecoderStream');202  promise_test(async () => {203    const objId = await constructAndStore('TextDecoderStream');204    const chunkPromise = readInReadRealm(objId);205    writeInWriteRealm(objId, new Uint8Array([65]));206    // Now the read() should resolve.207    const result = await chunkPromise;208    assert_equals(result.constructor, constructorRealm.Object,209                  'result should be in constructor realm');210    // A string is not an object, so doesn't have an associated realm. Accessing211    // string properties will create a transient object wrapper belonging to the212    // current realm. So checking the realm of result.value is not useful.213  }, 'the result object when write is called with a pending ' +214     'read should come from the same realm as the constructor of TextDecoderStream');215  promise_test(async t => {216    const objId = await constructAndStore('TextDecoderStream');217    // Read first to relieve backpressure.218    const readPromise = readInReadRealm(objId);219    await promise_rejects_js(220      t, constructorRealm.TypeError,221      writeInWriteRealm(objId, {}),222      'write TypeError should come from constructor realm'223    );224    return promise_rejects_js(225      t, constructorRealm.TypeError, readPromise,226      'read TypeError should come from constructor realm'227    );228  }, 'TypeError for chunk with the wrong type should come from constructor ' +229     'realm of TextDecoderStream');230  promise_test(async t => {231    const objId =232          await constructAndStore(`TextDecoderStream('utf-8', {fatal: true})`);233    // Read first to relieve backpressure.234    const readPromise = readInReadRealm(objId);235    await promise_rejects_js(236      t, constructorRealm.TypeError,237      writeInWriteRealm(objId, new Uint8Array([0xff])),238      'write TypeError should come from constructor realm'239    );240    return promise_rejects_js(241      t, constructorRealm.TypeError, readPromise,242      'read TypeError should come from constructor realm'243    );244  }, 'TypeError for invalid chunk should come from constructor realm ' +245     'of TextDecoderStream');246  promise_test(async t => {247    const objId =248          await constructAndStore(`TextDecoderStream('utf-8', {fatal: true})`);249    // Read first to relieve backpressure.250    readInReadRealm(objId);251    // Write an unfinished sequence of bytes.252    const incompleteBytesId = id();253    writeRealm[incompleteBytesId] = new Uint8Array([0xf0]);254    return promise_rejects_js(255      t, constructorRealm.TypeError,256      // Can't use writeInWriteRealm() here because it doesn't make it possible257      // to reuse the writer.258      evalInRealmAndReturn(writeRealm, `259(() => {260  const writer = window.${objId}.writable.getWriter();261  parent.writeMethod.call(writer, window.${incompleteBytesId});262  return parent.methodRealm.WritableStreamDefaultWriter.prototype263    .close.call(writer);264})();265`),266      'close TypeError should come from constructor realm'267    );268  }, 'TypeError for incomplete input should come from constructor realm ' +269     'of TextDecoderStream');...

aflprep_realms.window.js

Source:aflprep_realms.window.js

...54  evalInRealm(realm, code);55  evalInRealm(realm, `${resolve}();`);56  await waitOn;57}58async function evalInRealmAndReturn(realm, code) {59  const myId = id();60  await evalInRealmAndWait(realm, `window.${myId} = ${code};`);61  return realm[myId];62}63async function constructAndStore(what) {64  const objId = id();65  writeRealm[objId] = await evalInRealmAndReturn(66      constructedRealm, `new parent.constructorRealm.${what}`);67  readRealm[objId] = writeRealm[objId];68  return objId;69}70function readInReadRealm(objId) {71  return evalInRealmAndReturn(readRealm, `72parent.readMethod.call(window.${objId}.readable.getReader())`);73}74function writeInWriteRealm(objId, value) {75  const valueId = id();76  writeRealm[valueId] = value;77  return evalInRealmAndReturn(writeRealm, `78parent.writeMethod.call(window.${objId}.writable.getWriter(),79                        window.${valueId})`);80}81window.onload = () => {82  createRealms().then(() => {83    runGenericTests('TextEncoderStream');84    runTextEncoderStreamTests();85    runGenericTests('TextDecoderStream');86    runTextDecoderStreamTests();87    done();88  });89};90function runGenericTests(classname) {91  promise_test(async () => {92    const obj = await evalInRealmAndReturn(93        constructedRealm, `new parent.constructorRealm.${classname}()`);94    assert_equals(obj.constructor, constructorRealm[classname],95                  'obj should be in constructor realm');96  }, `a ${classname} object should be associated with the realm the ` +97     'constructor came from');98  promise_test(async () => {99    const objId = await constructAndStore(classname);100    const readableGetterId = id();101    readRealm[readableGetterId] = Object.getOwnPropertyDescriptor(102        methodRealm[classname].prototype, 'readable').get;103    const writableGetterId = id();104    writeRealm[writableGetterId] = Object.getOwnPropertyDescriptor(105        methodRealm[classname].prototype, 'writable').get;106    const readable = await evalInRealmAndReturn(107        readRealm, `${readableGetterId}.call(${objId})`);108    const writable = await evalInRealmAndReturn(109        writeRealm, `${writableGetterId}.call(${objId})`);110    assert_equals(readable.constructor, constructorRealm.ReadableStream,111                  'readable should be in constructor realm');112    assert_equals(writable.constructor, constructorRealm.WritableStream,113                  'writable should be in constructor realm');114  }, `${classname}'s readable and writable attributes should come from the ` +115     'same realm as the constructor definition');116}117function runTextEncoderStreamTests() {118  promise_test(async () => {119    const objId = await constructAndStore('TextEncoderStream');120    const writePromise = writeInWriteRealm(objId, 'A');121    const result = await readInReadRealm(objId);122    await writePromise;123    assert_equals(result.constructor, constructorRealm.Object,124                  'result should be in constructor realm');125    assert_equals(result.value.constructor, constructorRealm.Uint8Array,126                  'chunk should be in constructor realm');127  }, 'the output chunks when read is called after write should come from the ' +128     'same realm as the constructor of TextEncoderStream');129  promise_test(async () => {130    const objId = await constructAndStore('TextEncoderStream');131    const chunkPromise = readInReadRealm(objId);132    writeInWriteRealm(objId, 'A');133    const result = await chunkPromise;134    assert_equals(result.constructor, constructorRealm.Object,135                  'result should be in constructor realm');136    assert_equals(result.value.constructor, constructorRealm.Uint8Array,137                  'chunk should be in constructor realm');138  }, 'the output chunks when write is called with a pending read should come ' +139     'from the same realm as the constructor of TextEncoderStream');140  promise_test(async t => {141    const objId = await constructAndStore('TextEncoderStream');142    const readPromise = readInReadRealm(objId);143    await promise_rejects_js(t, constructorRealm.TypeError,144                             writeInWriteRealm(objId, {145                               toString() { return {}; }146                             }),147                             'write TypeError should come from constructor realm');148    return promise_rejects_js(t, constructorRealm.TypeError, readPromise,149                              'read TypeError should come from constructor realm');150  }, 'TypeError for unconvertable chunk should come from constructor realm ' +151     'of TextEncoderStream');152}153function runTextDecoderStreamTests() {154  promise_test(async () => {155    const objId = await constructAndStore('TextDecoderStream');156    const writePromise = writeInWriteRealm(objId, new Uint8Array([65]));157    const result = await readInReadRealm(objId);158    await writePromise;159    assert_equals(result.constructor, constructorRealm.Object,160                  'result should be in constructor realm');161  }, 'the result object when read is called after write should come from the ' +162     'same realm as the constructor of TextDecoderStream');163  promise_test(async () => {164    const objId = await constructAndStore('TextDecoderStream');165    const chunkPromise = readInReadRealm(objId);166    writeInWriteRealm(objId, new Uint8Array([65]));167    const result = await chunkPromise;168    assert_equals(result.constructor, constructorRealm.Object,169                  'result should be in constructor realm');170  }, 'the result object when write is called with a pending ' +171     'read should come from the same realm as the constructor of TextDecoderStream');172  promise_test(async t => {173    const objId = await constructAndStore('TextDecoderStream');174    const readPromise = readInReadRealm(objId);175    await promise_rejects_js(176      t, constructorRealm.TypeError,177      writeInWriteRealm(objId, {}),178      'write TypeError should come from constructor realm'179    );180    return promise_rejects_js(181      t, constructorRealm.TypeError, readPromise,182      'read TypeError should come from constructor realm'183    );184  }, 'TypeError for chunk with the wrong type should come from constructor ' +185     'realm of TextDecoderStream');186  promise_test(async t => {187    const objId =188          await constructAndStore(`TextDecoderStream('utf-8', {fatal: true})`);189    const readPromise = readInReadRealm(objId);190    await promise_rejects_js(191      t, constructorRealm.TypeError,192      writeInWriteRealm(objId, new Uint8Array([0xff])),193      'write TypeError should come from constructor realm'194    );195    return promise_rejects_js(196      t, constructorRealm.TypeError, readPromise,197      'read TypeError should come from constructor realm'198    );199  }, 'TypeError for invalid chunk should come from constructor realm ' +200     'of TextDecoderStream');201  promise_test(async t => {202    const objId =203          await constructAndStore(`TextDecoderStream('utf-8', {fatal: true})`);204    readInReadRealm(objId);205    const incompleteBytesId = id();206    writeRealm[incompleteBytesId] = new Uint8Array([0xf0]);207    return promise_rejects_js(208      t, constructorRealm.TypeError,209      evalInRealmAndReturn(writeRealm, `210(() => {211  const writer = window.${objId}.writable.getWriter();212  parent.writeMethod.call(writer, window.${incompleteBytesId});213  return parent.methodRealm.WritableStreamDefaultWriter.prototype214    .close.call(writer);215})();216`),217      'close TypeError should come from constructor realm'218    );219  }, 'TypeError for incomplete input should come from constructor realm ' +220     'of TextDecoderStream');...

Using AI Code Generation

1var wptRunner = require("wpt-runner");2var wpt = new wptRunner();3var realm = wpt.createRealm();4var result = wpt.evalInRealmAndReturn(realm, "var a = 10; a + 20;");5var wptRunner = require("wpt-runner");6var wpt = new wptRunner();7var realm = wpt.createRealm();8var result = wpt.evalInRealmAndReturn(realm, "var a = 10; a + 20;");9var wptRunner = require("wpt-runner");10var wpt = new wptRunner();11var realm = wpt.createRealm();12var result = wpt.evalInRealmAndReturn(realm, "var a = 10; a + 20;");13var wptRunner = require("wpt-runner");14var wpt = new wptRunner();15var realm = wpt.createRealm();16var result = wpt.evalInRealmAndReturn(realm, "var a = 10; a + 20;");17var wptRunner = require("wpt-runner");18var wpt = new wptRunner();19var realm = wpt.createRealm();20var result = wpt.evalInRealmAndReturn(realm, "var a = 10; a + 20;");21var wptRunner = require("wpt-runner");22var wpt = new wptRunner();23var realm = wpt.createRealm();24var result = wpt.evalInRealmAndReturn(realm, "var a = 10; a + 20;");25var wptRunner = require("wpt-runner");26var wpt = new wptRunner();27var realm = wpt.createRealm();28var result = wpt.evalInRealmAndReturn(realm, "var a = 10

Using AI Code Generation

1var realm = new Reflect.Realm();2var global = realm.global;3var code = "function foo() { return 'foo'; }";4var result = evalInRealmAndReturn(realm, code);5assert_equals(result, 'foo');6var realm = new Reflect.Realm();7var global = realm.global;8var code = "function foo() { return 'foo'; }";9var result = evalInRealm(realm, code);10assert_equals(result, 'foo');11var realm = new Reflect.Realm();12var global = realm.global;13var code = "function foo() { return 'foo'; }";14var result = evalInRealm(realm, code);15assert_equals(result, 'foo');

Using AI Code Generation

1var result = evalInRealmAndReturn(function() {2    var a = 10;3    var b = 20;4    return a + b;5});6var result = evalInRealmAndReturn(function(a, b) {7    return a + b;8}, [10, 20]);9var result = evalInRealmAndReturn(function(a, b) {10    return a + b;11}, [10, function() {12    return 20;13}]);14var result = evalInRealmAndReturn(function(a, b) {15    return a + b;16}, [10, function() {17    return 20;18}]);19var result = evalInRealmAndReturn(function(a, b) {20    return a + b;21}, [10, function() {22    return 20;23}]);24var result = evalInRealmAndReturn(function(a, b) {

Using AI Code Generation

1var realm = evalInRealmAndReturn(`2  var realm = {};3  realm.a = 1;4  realm.b = 2;5  realm.add = function() {6    return this.a + this.b;7  }8`);9var result = realm.add();

Using AI Code Generation

1var result = evalInRealmAndReturn("var x = 5; x");2assert_equals(result, 5, "result of script in new realm should be 5");3var result = evalInRealmAndReturn("var x = 5; x");4assert_equals(result, 5, "result of script in new realm should be 5");5var result = evalInRealmAndReturn("var x = 5; x");6assert_equals(result, 5, "result of script in new realm should be 5");7var result = evalInRealmAndReturn("var x = 5; x");8assert_equals(result, 5, "result of script in new realm should be 5");9var result = evalInRealmAndReturn("var x = 5; x");10assert_equals(result, 5, "result of script in new realm should be 5");11var result = evalInRealmAndReturn("var x = 5; x");12assert_equals(result, 5, "result of script in new realm should be 5");13var result = evalInRealmAndReturn("var x = 5; x");14assert_equals(result,

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