How to use streamAndReader method in wpt

Best JavaScript code snippet using wpt

rs-test-templates.js

Source:rs-test-templates.js

1'use strict';2// These tests can be run against any readable stream produced by the web platform that meets the given descriptions.3// For readable stream tests, the factory should return the stream. For reader tests, the factory should return a4// { stream, reader } object. (You can use this to vary the time at which you acquire a reader.)5self.templatedRSEmpty = (label, factory) => {6  test(() => {}, 'Running templatedRSEmpty with ' + label);7  test(() => {8    const rs = factory();9    assert_equals(typeof rs.locked, 'boolean', 'has a boolean locked getter');10    assert_equals(typeof rs.cancel, 'function', 'has a cancel method');11    assert_equals(typeof rs.getReader, 'function', 'has a getReader method');12    assert_equals(typeof rs.pipeThrough, 'function', 'has a pipeThrough method');13    assert_equals(typeof rs.pipeTo, 'function', 'has a pipeTo method');14    assert_equals(typeof rs.tee, 'function', 'has a tee method');15  }, label + ': instances have the correct methods and properties');16  test(() => {17    const rs = factory();18    assert_throws(new RangeError(), () => rs.getReader({ mode: '' }), 'empty string mode should throw');19    assert_throws(new RangeError(), () => rs.getReader({ mode: null }), 'null mode should throw');20    assert_throws(new RangeError(), () => rs.getReader({ mode: 'asdf' }), 'asdf mode should throw');21    assert_throws(new TypeError(), () => rs.getReader(null), 'null should throw');22  }, label + ': calling getReader with invalid arguments should throw appropriate errors');23};24self.templatedRSClosed = (label, factory) => {25  test(() => {}, 'Running templatedRSClosed with ' + label);26  promise_test(() => {27    const rs = factory();28    const cancelPromise1 = rs.cancel();29    const cancelPromise2 = rs.cancel();30    assert_not_equals(cancelPromise1, cancelPromise2, 'cancel() calls should return distinct promises');31    return Promise.all([32      cancelPromise1.then(v => assert_equals(v, undefined, 'first cancel() call should fulfill with undefined')),33      cancelPromise2.then(v => assert_equals(v, undefined, 'second cancel() call should fulfill with undefined'))34    ]);35  }, label + ': cancel() should return a distinct fulfilled promise each time');36  test(() => {37    const rs = factory();38    assert_false(rs.locked, 'locked getter should return false');39  }, label + ': locked should be false');40  test(() => {41    const rs = factory();42    rs.getReader(); // getReader() should not throw.43  }, label + ': getReader() should be OK');44  test(() => {45    const rs = factory();46    const reader = rs.getReader();47    reader.releaseLock();48    const reader2 = rs.getReader(); // Getting a second reader should not throw.49    reader2.releaseLock();50    rs.getReader(); // Getting a third reader should not throw.51  }, label + ': should be able to acquire multiple readers if they are released in succession');52  test(() => {53    const rs = factory();54    rs.getReader();55    assert_throws(new TypeError(), () => rs.getReader(), 'getting a second reader should throw');56    assert_throws(new TypeError(), () => rs.getReader(), 'getting a third reader should throw');57  }, label + ': should not be able to acquire a second reader if we don\'t release the first one');58};59self.templatedRSErrored = (label, factory, error) => {60  test(() => {}, 'Running templatedRSErrored with ' + label);61  promise_test(t => {62    const rs = factory();63    const reader = rs.getReader();64    return Promise.all([65      promise_rejects(t, error, reader.closed),66      promise_rejects(t, error, reader.read())67    ]);68  }, label + ': getReader() should return a reader that acts errored');69  promise_test(t => {70    const rs = factory();71    const reader = rs.getReader();72    return Promise.all([73      promise_rejects(t, error, reader.read()),74      promise_rejects(t, error, reader.read()),75      promise_rejects(t, error, reader.closed)76    ]);77  }, label + ': read() twice should give the error each time');78  test(() => {79    const rs = factory();80    assert_false(rs.locked, 'locked getter should return false');81  }, label + ': locked should be false');82};83self.templatedRSErroredSyncOnly = (label, factory, error) => {84  test(() => {}, 'Running templatedRSErroredSyncOnly with ' + label);85  promise_test(t => {86    const rs = factory();87    rs.getReader().releaseLock();88    const reader = rs.getReader(); // Calling getReader() twice does not throw (the stream is not locked).89    return promise_rejects(t, error, reader.closed);90  }, label + ': should be able to obtain a second reader, with the correct closed promise');91  test(() => {92    const rs = factory();93    rs.getReader();94    assert_throws(new TypeError(), () => rs.getReader(), 'getting a second reader should throw a TypeError');95    assert_throws(new TypeError(), () => rs.getReader(), 'getting a third reader should throw a TypeError');96  }, label + ': should not be able to obtain additional readers if we don\'t release the first lock');97  promise_test(t => {98    const rs = factory();99    const cancelPromise1 = rs.cancel();100    const cancelPromise2 = rs.cancel();101    assert_not_equals(cancelPromise1, cancelPromise2, 'cancel() calls should return distinct promises');102    return Promise.all([103      promise_rejects(t, error, cancelPromise1),104      promise_rejects(t, error, cancelPromise2)105    ]);106  }, label + ': cancel() should return a distinct rejected promise each time');107  promise_test(t => {108    const rs = factory();109    const reader = rs.getReader();110    const cancelPromise1 = reader.cancel();111    const cancelPromise2 = reader.cancel();112    assert_not_equals(cancelPromise1, cancelPromise2, 'cancel() calls should return distinct promises');113    return Promise.all([114      promise_rejects(t, error, cancelPromise1),115      promise_rejects(t, error, cancelPromise2)116    ]);117  }, label + ': reader cancel() should return a distinct rejected promise each time');118};119self.templatedRSEmptyReader = (label, factory) => {120  test(() => {}, 'Running templatedRSEmptyReader with ' + label);121  test(() => {122    const reader = factory().reader;123    assert_true('closed' in reader, 'has a closed property');124    assert_equals(typeof reader.closed.then, 'function', 'closed property is thenable');125    assert_equals(typeof reader.cancel, 'function', 'has a cancel method');126    assert_equals(typeof reader.read, 'function', 'has a read method');127    assert_equals(typeof reader.releaseLock, 'function', 'has a releaseLock method');128  }, label + ': instances have the correct methods and properties');129  test(() => {130    const stream = factory().stream;131    assert_true(stream.locked, 'locked getter should return true');132  }, label + ': locked should be true');133  promise_test(t => {134    const reader = factory().reader;135    reader.read().then(136      t.unreached_func('read() should not fulfill'),137      t.unreached_func('read() should not reject')138    );139    return delay(500);140  }, label + ': read() should never settle');141  promise_test(t => {142    const reader = factory().reader;143    reader.read().then(144      t.unreached_func('read() should not fulfill'),145      t.unreached_func('read() should not reject')146    );147    reader.read().then(148      t.unreached_func('read() should not fulfill'),149      t.unreached_func('read() should not reject')150    );151    return delay(500);152  }, label + ': two read()s should both never settle');153  test(() => {154    const reader = factory().reader;155    assert_not_equals(reader.read(), reader.read(), 'the promises returned should be distinct');156  }, label + ': read() should return distinct promises each time');157  test(() => {158    const stream = factory().stream;159    assert_throws(new TypeError(), () => stream.getReader(), 'stream.getReader() should throw a TypeError');160  }, label + ': getReader() again on the stream should fail');161  promise_test(t => {162    const streamAndReader = factory();163    const stream = streamAndReader.stream;164    const reader = streamAndReader.reader;165    reader.read().then(166      t.unreached_func('first read() should not fulfill'),167      t.unreached_func('first read() should not reject')168    );169    reader.read().then(170      t.unreached_func('second read() should not fulfill'),171      t.unreached_func('second read() should not reject')172    );173    reader.closed.then(174      t.unreached_func('closed should not fulfill'),175      t.unreached_func('closed should not reject')176    );177    assert_throws(new TypeError(), () => reader.releaseLock(), 'releaseLock should throw a TypeError');178    assert_true(stream.locked, 'the stream should still be locked');179    return delay(500);180  }, label + ': releasing the lock with pending read requests should throw but the read requests should stay pending');181  promise_test(t => {182    const reader = factory().reader;183    reader.releaseLock();184    return Promise.all([185      promise_rejects(t, new TypeError(), reader.read()),186      promise_rejects(t, new TypeError(), reader.read())187    ]);188  }, label + ': releasing the lock should cause further read() calls to reject with a TypeError');189  promise_test(t => {190    const reader = factory().reader;191    const closedBefore = reader.closed;192    reader.releaseLock();193    const closedAfter = reader.closed;194    assert_equals(closedBefore, closedAfter, 'the closed promise should not change identity');195    return promise_rejects(t, new TypeError(), closedBefore);196  }, label + ': releasing the lock should cause closed calls to reject with a TypeError');197  test(() => {198    const streamAndReader = factory();199    const stream = streamAndReader.stream;200    const reader = streamAndReader.reader;201    reader.releaseLock();202    assert_false(stream.locked, 'locked getter should return false');203  }, label + ': releasing the lock should cause locked to become false');204  promise_test(() => {205    const reader = factory().reader;206    reader.cancel();207    return reader.read().then(r => {208      assert_object_equals(r, { value: undefined, done: true }, 'read()ing from the reader should give a done result');209    });210  }, label + ': canceling via the reader should cause the reader to act closed');211  promise_test(t => {212    const stream = factory().stream;213    return promise_rejects(t, new TypeError(), stream.cancel());214  }, label + ': canceling via the stream should fail');215};216self.templatedRSClosedReader = (label, factory) => {217  test(() => {}, 'Running templatedRSClosedReader with ' + label);218  promise_test(() => {219    const reader = factory().reader;220    return reader.read().then(v => {221      assert_object_equals(v, { value: undefined, done: true }, 'read() should fulfill correctly');222    });223  }, label + ': read() should fulfill with { value: undefined, done: true }');224  promise_test(() => {225    const reader = factory().reader;226    return Promise.all([227      reader.read().then(v => {228        assert_object_equals(v, { value: undefined, done: true }, 'read() should fulfill correctly');229      }),230      reader.read().then(v => {231        assert_object_equals(v, { value: undefined, done: true }, 'read() should fulfill correctly');232      })233    ]);234  }, label + ': read() multiple times should fulfill with { value: undefined, done: true }');235  promise_test(() => {236    const reader = factory().reader;237    return reader.read().then(() => reader.read()).then(v => {238      assert_object_equals(v, { value: undefined, done: true }, 'read() should fulfill correctly');239    });240  }, label + ': read() should work when used within another read() fulfill callback');241  promise_test(() => {242    const reader = factory().reader;243    return reader.closed.then(v => assert_equals(v, undefined, 'reader closed should fulfill with undefined'));244  }, label + ': closed should fulfill with undefined');245  promise_test(t => {246    const reader = factory().reader;247    const closedBefore = reader.closed;248    reader.releaseLock();249    const closedAfter = reader.closed;250    assert_not_equals(closedBefore, closedAfter, 'the closed promise should change identity');251    return Promise.all([252      closedBefore.then(v => assert_equals(v, undefined, 'reader.closed acquired before release should fulfill')),253      promise_rejects(t, new TypeError(), closedAfter)254    ]);255  }, label + ': releasing the lock should cause closed to reject and change identity');256  promise_test(() => {257    const reader = factory().reader;258    const cancelPromise1 = reader.cancel();259    const cancelPromise2 = reader.cancel();260    const closedReaderPromise = reader.closed;261    assert_not_equals(cancelPromise1, cancelPromise2, 'cancel() calls should return distinct promises');262    assert_not_equals(cancelPromise1, closedReaderPromise, 'cancel() promise 1 should be distinct from reader.closed');263    assert_not_equals(cancelPromise2, closedReaderPromise, 'cancel() promise 2 should be distinct from reader.closed');264    return Promise.all([265      cancelPromise1.then(v => assert_equals(v, undefined, 'first cancel() should fulfill with undefined')),266      cancelPromise2.then(v => assert_equals(v, undefined, 'second cancel() should fulfill with undefined'))267    ]);268  }, label + ': cancel() should return a distinct fulfilled promise each time');269};270self.templatedRSErroredReader = (label, factory, error) => {271  test(() => {}, 'Running templatedRSErroredReader with ' + label);272  promise_test(t => {273    const reader = factory().reader;274    return promise_rejects(t, error, reader.closed);275  }, label + ': closed should reject with the error');276  promise_test(t => {277    const reader = factory().reader;278    const closedBefore = reader.closed;279    return promise_rejects(t, error, closedBefore).then(() => {280      reader.releaseLock();281      const closedAfter = reader.closed;282      assert_not_equals(closedBefore, closedAfter, 'the closed promise should change identity');283      return promise_rejects(t, new TypeError(), closedAfter);284    });285  }, label + ': releasing the lock should cause closed to reject and change identity');286  promise_test(t => {287    const reader = factory().reader;288    return promise_rejects(t, error, reader.read());289  }, label + ': read() should reject with the error');290};291self.templatedRSTwoChunksOpenReader = (label, factory, chunks) => {292  test(() => {}, 'Running templatedRSTwoChunksOpenReader with ' + label);293  promise_test(() => {294    const reader = factory().reader;295    return Promise.all([296      reader.read().then(r => {297        assert_object_equals(r, { value: chunks[0], done: false }, 'first result should be correct');298      }),299      reader.read().then(r => {300        assert_object_equals(r, { value: chunks[1], done: false }, 'second result should be correct');301      })302    ]);303  }, label + ': calling read() twice without waiting will eventually give both chunks (sequential)');304  promise_test(() => {305    const reader = factory().reader;306    return reader.read().then(r => {307      assert_object_equals(r, { value: chunks[0], done: false }, 'first result should be correct');308      return reader.read().then(r2 => {309        assert_object_equals(r2, { value: chunks[1], done: false }, 'second result should be correct');310      });311    });312  }, label + ': calling read() twice without waiting will eventually give both chunks (nested)');313  test(() => {314    const reader = factory().reader;315    assert_not_equals(reader.read(), reader.read(), 'the promises returned should be distinct');316  }, label + ': read() should return distinct promises each time');317  promise_test(() => {318    const reader = factory().reader;319    const promise1 = reader.closed.then(v => {320      assert_equals(v, undefined, 'reader closed should fulfill with undefined');321    });322    const promise2 = reader.read().then(r => {323      assert_object_equals(r, { value: chunks[0], done: false },324                           'promise returned before cancellation should fulfill with a chunk');325    });326    reader.cancel();327    const promise3 = reader.read().then(r => {328      assert_object_equals(r, { value: undefined, done: true },329                           'promise returned after cancellation should fulfill with an end-of-stream signal');330    });331    return Promise.all([promise1, promise2, promise3]);332  }, label + ': cancel() after a read() should still give that single read result');333};334self.templatedRSTwoChunksClosedReader = function (label, factory, chunks) {335  test(() => {}, 'Running templatedRSTwoChunksClosedReader with ' + label);336  promise_test(() => {337    const reader = factory().reader;338    return Promise.all([339      reader.read().then(r => {340        assert_object_equals(r, { value: chunks[0], done: false }, 'first result should be correct');341      }),342      reader.read().then(r => {343        assert_object_equals(r, { value: chunks[1], done: false }, 'second result should be correct');344      }),345      reader.read().then(r => {346        assert_object_equals(r, { value: undefined, done: true }, 'third result should be correct');347      })348    ]);349  }, label + ': third read(), without waiting, should give { value: undefined, done: true } (sequential)');350  promise_test(() => {351    const reader = factory().reader;352    return reader.read().then(r => {353      assert_object_equals(r, { value: chunks[0], done: false }, 'first result should be correct');354      return reader.read().then(r2 => {355        assert_object_equals(r2, { value: chunks[1], done: false }, 'second result should be correct');356        return reader.read().then(r3 => {357          assert_object_equals(r3, { value: undefined, done: true }, 'third result should be correct');358        });359      });360    });361  }, label + ': third read(), without waiting, should give { value: undefined, done: true } (nested)');362  promise_test(() => {363    const streamAndReader = factory();364    const stream = streamAndReader.stream;365    const reader = streamAndReader.reader;366    assert_true(stream.locked, 'stream should start locked');367    const promise = reader.closed.then(v => {368      assert_equals(v, undefined, 'reader closed should fulfill with undefined');369      assert_true(stream.locked, 'stream should remain locked');370    });371    reader.read();372    reader.read();373    return promise;374  }, label +375     ': draining the stream via read() should cause the reader closed promise to fulfill, but locked stays true');376  promise_test(() => {377    const streamAndReader = factory();378    const stream = streamAndReader.stream;379    const reader = streamAndReader.reader;380    const promise = reader.closed.then(() => {381      assert_true(stream.locked, 'the stream should start locked');382      reader.releaseLock(); // Releasing the lock after reader closed should not throw.383      assert_false(stream.locked, 'the stream should end unlocked');384    });385    reader.read();386    reader.read();387    return promise;388  }, label + ': releasing the lock after the stream is closed should cause locked to become false');389  promise_test(t => {390    const reader = factory().reader;391    reader.releaseLock();392    return Promise.all([393      promise_rejects(t, new TypeError(), reader.read()),394      promise_rejects(t, new TypeError(), reader.read()),395      promise_rejects(t, new TypeError(), reader.read())396    ]);397  }, label + ': releasing the lock should cause further read() calls to reject with a TypeError');398  promise_test(() => {399    const streamAndReader = factory();400    const stream = streamAndReader.stream;401    const reader = streamAndReader.reader;402    const readerClosed = reader.closed;403    assert_equals(reader.closed, readerClosed, 'accessing reader.closed twice in succession gives the same value');404    const promise = reader.read().then(() => {405      assert_equals(reader.closed, readerClosed, 'reader.closed is the same after read() fulfills');406      reader.releaseLock();407      assert_equals(reader.closed, readerClosed, 'reader.closed is the same after releasing the lock');408      const newReader = stream.getReader();409      return newReader.read();410    });411    assert_equals(reader.closed, readerClosed, 'reader.closed is the same after calling read()');412    return promise;413  }, label + ': reader\'s closed property always returns the same promise');...

Using AI Code Generation

1var wptools = require('wptools');2var fs = require('fs');3var path = require('path');4var stream = fs.createWriteStream(path.join(__dirname, 'output.txt'));5var reader = wptools.streamAndReader(stream);6wptools.page('Albert Einstein').get().then(function(page) {7    page.links().then(reader);8});

Using AI Code Generation

1var wptools = require('wptools');2var wiki = wptools.page('Barack Obama');3wiki.streamAndReader(function(err, stream, reader) {4    stream.on('data', function(chunk) {5        console.log(chunk);6    });7    reader.on('end', function() {8        console.log('done');9    });10});11var wptools = require('wptools');12var wiki = wptools.page('Barack Obama');13wiki.streamAndReader(function(err, stream, reader) {14    stream.on('data', function(chunk) {15        console.log(chunk);16    });17    reader.on('end', function() {18        console.log('done');19    });20});21var wptools = require('wptools');22var wiki = wptools.page('Barack Obama');23wiki.streamAndReader(function(err, stream, reader) {24    stream.on('data', function(chunk) {25        console.log(chunk);26    });27    reader.on('end', function() {28        console.log('done');29    });30});31var wptools = require('wptools');32var wiki = wptools.page('Barack Obama');33wiki.streamAndReader(function(err, stream, reader) {34    stream.on('data', function(chunk) {35        console.log(chunk);36    });37    reader.on('end', function() {38        console.log('done');39    });40});41var wptools = require('wptools');42var wiki = wptools.page('Barack Obama');43wiki.streamAndReader(function(err, stream, reader) {44    stream.on('data', function(chunk) {45        console.log(chunk);46    });47    reader.on('end', function() {48        console.log('done');49    });50});51var wptools = require('wptools');52var wiki = wptools.page('Barack Obama');53wiki.streamAndReader(function(err, stream, reader) {54    stream.on('data', function(chunk) {55        console.log(chunk);56    });

Using AI Code Generation

1var wpt = require('./lib/webpagetest');2var wpt = new wpt('www.webpagetest.org');3var fs = require('fs');4var path = require('path');5var util = require('util');6var stream = require('stream');7  if(err) return console.log(err);8  console.log('Test status: ' + data.statusText);9  console.log('Test ID: ' + data.data.testId);10  console.log('Test URL: ' + data.data.summary);11  console.log('Test results: ' + data.data.userUrl);12});13test.on('done', function(data) {14  console.log('Test completed');15  console.log('Test ID: ' + data.data.testId);16  console.log('Test results: ' + data.data.summary);17  console.log('Test results: ' + data.data.userUrl);18  var testId = data.data.testId;19  var testUrl = data.data.userUrl;20  var testResults = data.data.summary;21  var testJson = data.data.jsonUrl;22  var testXml = data.data.xmlUrl;23  var testZip = data.data.zipUrl;24  var testPng = data.data.pngUrl;25  var testPagespeed = data.data.pagespeedUrl;26  var testHar = data.data.harUrl;27  var testVideo = data.data.videoUrl;28  var testVideoFull = data.data.videoFullUrl;29  var testVideoWaterfall = data.data.videoWaterfallUrl;30  var testPageData = data.data.pageDataUrl;

Using AI Code Generation

1var wptools = require('wptools');2var fs = require('fs');3var stream = fs.createWriteStream("test1.txt");4var reader = fs.createReadStream("test1.txt");5var page = wptools.page('Barack Obama');6page.streamAndReader(stream, reader, {lang:'es'}, function(err, resp) {7  console.log(resp);8});

Using AI Code Generation

1var wptools = require('wptools');2var fs = require('fs');3var stream = fs.createWriteStream("file.txt");4var reader = fs.createReadStream("file.txt");5var wiki = new wptools.page('Albert Einstein');6wiki.streamAndReader(stream, reader, function(err, resp) {7    if (err) {8        console.log(err);9    }10    console.log(resp);11});

Using AI Code Generation

1var wptoolbox = require('./wptoolbox.js');2var fs = require('fs');3var input = 'test.txt';4var output = 'output.txt';5var encoding = 'utf8';6var callback = function(err){7	if (err) throw err;8	console.log('It\'s saved!');9};10wptoolbox.streamAndReader(input, output, encoding, callback);

Using AI Code Generation

1var wpt = require('webpagetest');2var options = {3};4var webpagetest = new wpt(options);5webpagetest.runTest(testUrl, function(err, data) {6  if (err) return console.error(err);7  console.log('Test initiated for ' + testUrl + ': ' + data.data.testId);8  webpagetest.streamAndReader(data.data.testId, function(err, data) {9    if (err) return console.error(err);10    console.log('Test completed for ' + testUrl + ': ' + data.data.testId);11  });12});13var wpt = require('webpagetest');14var options = {15};16var webpagetest = new wpt(options);17webpagetest.runTest(testUrl, function(err, data) {18  if (err) return console.error(err);19  console.log('Test initiated for ' + testUrl + ': ' + data.data.testId);20  webpagetest.streamAndReader(data.data.testId, function(err, data) {21    if (err) return console.error(err);22    console.log('Test completed for ' + testUrl + ': ' + data.data.testId);23  });24});25var wpt = require('webpagetest');26var options = {

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.