KaneAI - World’s First E2E Software Testing Agent.Book a Demo Join TestMu Conference

How to use onUnhandledFail method in wpt

Best JavaScript code snippet using wpt

promise-rejection-events.js

Source:promise-rejection-events.js

...131//132async_test(function(t) {133  var e = new Error();134  var p;135  onUnhandledFail(t, function() { return p; });136  var unreached = t.unreached_func('promise should not be fulfilled');137  p = Promise.reject(e).then(unreached, function() {});138}, 'no unhandledrejection/rejectionhandled: rejection handler attached synchronously to a promise from Promise.reject');139async_test(function(t) {140  var e = new Error();141  var p;142  onUnhandledFail(t, function() { return p; });143  var unreached = t.unreached_func('promise should not be fulfilled');144  p = Promise.all([Promise.reject(e)]).then(unreached, function() {});145}, 'no unhandledrejection/rejectionhandled: rejection handler attached synchronously to a promise from ' +146   'Promise.reject, indirecting through Promise.all');147async_test(function(t) {148  var e = new Error();149  var p;150  onUnhandledFail(t, function() { return p; });151  var unreached = t.unreached_func('promise should not be fulfilled');152  p = new Promise(function(_, reject) {153    reject(e);154  }).then(unreached, function() {});155}, 'no unhandledrejection/rejectionhandled: rejection handler attached synchronously to a synchronously-rejected ' +156   'promise created with new Promise');157async_test(function(t) {158  var e = new Error();159  var p;160  onUnhandledFail(t, function() { return p; });161  var unreached = t.unreached_func('promise should not be fulfilled');162  p = Promise.resolve().then(function() {163    throw e;164  }).then(unreached, function(reason) {165    t.step(function() {166      assert_equals(reason, e);167    });168  });169}, 'no unhandledrejection/rejectionhandled: rejection handler attached synchronously to a promise created from ' +170   'throwing in a fulfillment handler');171async_test(function(t) {172  var e = new Error();173  var p;174  onUnhandledFail(t, function() { return p; });175  var unreached = t.unreached_func('promise should not be fulfilled');176  p = Promise.resolve().then(function() {177    return Promise.reject(e);178  }).then(unreached, function(reason) {179    t.step(function() {180      assert_equals(reason, e);181    });182  });183}, 'no unhandledrejection/rejectionhandled: rejection handler attached synchronously to a promise created from ' +184   'returning a Promise.reject-created promise in a fulfillment handler');185async_test(function(t) {186  var e = new Error();187  var p;188  onUnhandledFail(t, function() { return p; });189  var unreached = t.unreached_func('promise should not be fulfilled');190  p = Promise.resolve().then(function() {191    return new Promise(function(_, reject) {192      setTimeout(function() {193        reject(e);194      }, 1);195    });196  }).then(unreached, function(reason) {197    t.step(function() {198      assert_equals(reason, e);199    });200  });201}, 'no unhandledrejection/rejectionhandled: rejection handler attached synchronously to a promise created from ' +202   'returning a setTimeout-delayed rejection in a fulfillment handler');203async_test(function(t) {204  var e = new Error();205  var p;206  onUnhandledFail(t, function() { return p; });207  postMessageTask(function() {208    p = Promise.resolve().then(function() {209      return Promise.reject(e);210    })211    .catch(function() {});212  });213}, 'no unhandledrejection/rejectionhandled: all inside a queued task, a rejection handler attached synchronously to ' +214   'a promise created from returning a Promise.reject-created promise in a fulfillment handler');215//216// Negative unhandledrejection/rejectionhandled tests with microtask-delayed attachment217//218async_test(function(t) {219  var e = new Error();220  var p;221  onUnhandledFail(t, function() { return p; });222  p = Promise.reject(e);223  mutationObserverMicrotask(function() {224    var unreached = t.unreached_func('promise should not be fulfilled');225    p.then(unreached, function() {});226  });227}, 'delayed handling: a microtask delay before attaching a handler prevents both events (Promise.reject-created ' +228   'promise)');229async_test(function(t) {230  var e = new Error();231  var p;232  onUnhandledFail(t, function() { return p; });233  p = new Promise(function(_, reject) {234    reject(e);235  });236  mutationObserverMicrotask(function() {237    var unreached = t.unreached_func('promise should not be fulfilled');238    p.then(unreached, function() {});239  });240}, 'delayed handling: a microtask delay before attaching a handler prevents both events (immediately-rejected new ' +241   'Promise-created promise)');242async_test(function(t) {243  var e = new Error();244  var p1;245  var p2;246  onUnhandledFail(t, function() { return p1; });247  onUnhandledFail(t, function() { return p2; });248  p1 = new Promise(function(_, reject) {249    mutationObserverMicrotask(function() {250      reject(e);251    });252  });253  p2 = Promise.all([p1]);254  mutationObserverMicrotask(function() {255    var unreached = t.unreached_func('promise should not be fulfilled');256    p2.then(unreached, function() {});257  });258}, 'delayed handling: a microtask delay before attaching the handler, and before rejecting the promise, indirected ' +259   'through Promise.all');260//261// Negative unhandledrejection/rejectionhandled tests with nested-microtask-delayed attachment262//263async_test(function(t) {264  var e = new Error();265  var p;266  onUnhandledFail(t, function() { return p; });267  p = Promise.reject(e);268  mutationObserverMicrotask(function() {269    Promise.resolve().then(function() {270      mutationObserverMicrotask(function() {271        Promise.resolve().then(function() {272          p.catch(function() {});273        });274      });275    });276  });277}, 'microtask nesting: attaching a handler inside a combination of mutationObserverMicrotask + promise microtasks');278async_test(function(t) {279  var e = new Error();280  var p;281  onUnhandledFail(t, function() { return p; });282  postMessageTask(function() {283    p = Promise.reject(e);284    mutationObserverMicrotask(function() {285      Promise.resolve().then(function() {286        mutationObserverMicrotask(function() {287          Promise.resolve().then(function() {288            p.catch(function() {});289          });290        });291      });292    });293  });294}, 'microtask nesting: attaching a handler inside a combination of mutationObserverMicrotask + promise microtasks, ' +295   'all inside a postMessageTask');296async_test(function(t) {297  var e = new Error();298  var p;299  onUnhandledFail(t, function() { return p; });300  setTimeout(function() {301    p = Promise.reject(e);302    mutationObserverMicrotask(function() {303      Promise.resolve().then(function() {304        mutationObserverMicrotask(function() {305          Promise.resolve().then(function() {306            p.catch(function() {});307          });308        });309      });310    });311  }, 0);312}, 'microtask nesting: attaching a handler inside a combination of mutationObserverMicrotask + promise microtasks, ' +313   'all inside a setTimeout');314async_test(function(t) {315  var e = new Error();316  var p;317  onUnhandledFail(t, function() { return p; });318  p = Promise.reject(e);319  Promise.resolve().then(function() {320    mutationObserverMicrotask(function() {321      Promise.resolve().then(function() {322        mutationObserverMicrotask(function() {323          p.catch(function() {});324        });325      });326    });327  });328}, 'microtask nesting: attaching a handler inside a combination of promise microtasks + mutationObserverMicrotask');329async_test(function(t) {330  var e = new Error();331  var p;332  onUnhandledFail(t, function() { return p; });333  postMessageTask(function() {334    p = Promise.reject(e);335    Promise.resolve().then(function() {336      mutationObserverMicrotask(function() {337        Promise.resolve().then(function() {338          mutationObserverMicrotask(function() {339            p.catch(function() {});340          });341        });342      });343    });344  });345}, 'microtask nesting: attaching a handler inside a combination of promise microtasks + mutationObserverMicrotask, ' +346   'all inside a postMessageTask');347async_test(function(t) {348  var e = new Error();349  var p;350  onUnhandledFail(t, function() { return p; });351  setTimeout(function() {352    p = Promise.reject(e);353    Promise.resolve().then(function() {354      mutationObserverMicrotask(function() {355        Promise.resolve().then(function() {356          mutationObserverMicrotask(function() {357            p.catch(function() {});358          });359        });360      });361    });362  }, 0);363}, 'microtask nesting: attaching a handler inside a combination of promise microtasks + mutationObserverMicrotask, ' +364   'all inside a setTimeout');365// For workers, postMessageTask() involves posting tasks to other threads, so366// the following tests don't work there.367if ('document' in self) {368  //369  // Negative unhandledrejection/rejectionhandled tests with task-delayed attachment370  //371  async_test(function(t) {372    var e = new Error();373    var p;374    onUnhandledFail(t, function() { return p; });375    var _reject;376    p = new Promise(function(_, reject) {377      _reject = reject;378    });379    _reject(e);380    postMessageTask(function() {381      var unreached = t.unreached_func('promise should not be fulfilled');382      p.then(unreached, function() {});383    });384  }, 'delayed handling: a task delay before attaching a handler prevents unhandledrejection');385  async_test(function(t) {386    var e = new Error();387    var p;388    onUnhandledFail(t, function() { return p; });389    p = Promise.reject(e);390    postMessageTask(function() {391      Promise.resolve().then(function() {392        p.catch(function() {});393      });394    });395  }, 'delayed handling: postMessageTask after promise creation/rejection, plus promise microtasks, is not too late to ' +396     'attach a rejection handler');397  async_test(function(t) {398    var e = new Error();399    var p;400    onUnhandledFail(t, function() { return p; });401    postMessageTask(function() {402      Promise.resolve().then(function() {403        Promise.resolve().then(function() {404          Promise.resolve().then(function() {405            Promise.resolve().then(function() {406              p.catch(function() {});407            });408          });409        });410      });411    });412    p = Promise.reject(e);413  }, 'delayed handling: postMessageTask before promise creation/rejection, plus many promise microtasks, is not too ' +414     'late to attach a rejection handler');415  async_test(function(t) {416    var e = new Error();417    var p;418    onUnhandledFail(t, function() { return p; });419    p = Promise.reject(e);420    postMessageTask(function() {421      Promise.resolve().then(function() {422        Promise.resolve().then(function() {423          Promise.resolve().then(function() {424            Promise.resolve().then(function() {425              p.catch(function() {});426            });427          });428        });429      });430    });431  }, 'delayed handling: postMessageTask after promise creation/rejection, plus many promise microtasks, is not too ' +432     'late to attach a rejection handler');433}434//435// Positive unhandledrejection/rejectionhandled tests with delayed attachment436//437async_test(function(t) {438  var e = new Error();439  var p;440  onUnhandledSucceed(t, e, function() { return p; });441  var _reject;442  p = new Promise(function(_, reject) {443    _reject = reject;444  });445  _reject(e);446  postMessageTask(function() {447    postMessageTask(function() {448      var unreached = t.unreached_func('promise should not be fulfilled');449      p.then(unreached, function() {});450    });451  });452}, 'delayed handling: a nested-task delay before attaching a handler causes unhandledrejection');453async_test(function(t) {454  var e = new Error();455  var p;456  onUnhandledSucceed(t, e, function() { return p; });457  p = Promise.reject(e);458  postMessageTask(function() {459    postMessageTask(function() {460      Promise.resolve().then(function() {461        p.catch(function() {});462      });463    });464  });465}, 'delayed handling: a nested-postMessageTask after promise creation/rejection, plus promise microtasks, is too ' +466   'late to attach a rejection handler');467async_test(function(t) {468  var e = new Error();469  var p;470  onUnhandledSucceed(t, e, function() { return p; });471  postMessageTask(function() {472    postMessageTask(function() {473      Promise.resolve().then(function() {474        Promise.resolve().then(function() {475          Promise.resolve().then(function() {476            Promise.resolve().then(function() {477              p.catch(function() {});478            });479          });480        });481      });482    });483  });484  p = Promise.reject(e);485}, 'delayed handling: a nested-postMessageTask before promise creation/rejection, plus many promise microtasks, is ' +486   'too late to attach a rejection handler');487async_test(function(t) {488  var e = new Error();489  var p;490  onUnhandledSucceed(t, e, function() { return p; });491  p = Promise.reject(e);492  postMessageTask(function() {493    postMessageTask(function() {494      Promise.resolve().then(function() {495        Promise.resolve().then(function() {496          Promise.resolve().then(function() {497            Promise.resolve().then(function() {498              p.catch(function() {});499            });500          });501        });502      });503    });504  });505}, 'delayed handling: a nested-postMessageTask after promise creation/rejection, plus many promise microtasks, is ' +506   'too late to attach a rejection handler');507async_test(function(t) {508  var unhandledPromises = [];509  var unhandledReasons = [];510  var e = new Error();511  var p;512  var unhandled = function(ev) {513    if (ev.promise === p) {514      t.step(function() {515        unhandledPromises.push(ev.promise);516        unhandledReasons.push(ev.reason);517      });518    }519  };520  var handled = function(ev) {521    if (ev.promise === p) {522      t.step(function() {523        assert_array_equals(unhandledPromises, [p]);524        assert_array_equals(unhandledReasons, [e]);525        assert_equals(ev.promise, p);526        assert_equals(ev.reason, e);527      });528    }529  };530  addEventListener('unhandledrejection', unhandled);531  addEventListener('rejectionhandled', handled);532  ensureCleanup(t, unhandled, handled);533  p = new Promise(function() {534    throw e;535  });536  setTimeout(function() {537    var unreached = t.unreached_func('promise should not be fulfilled');538    p.then(unreached, function(reason) {539      assert_equals(reason, e);540      setTimeout(function() { t.done(); }, 10);541    });542  }, 10);543}, 'delayed handling: delaying handling by setTimeout(,10) will cause both events to fire');544//545// Miscellaneous tests about integration with the rest of the platform546//547async_test(function(t) {548  var e = new Error();549  var l = function(ev) {550    var order = [];551    mutationObserverMicrotask(function() {552      order.push(1);553    });554    setTimeout(function() {555      order.push(2);556      t.step(function() {557        assert_array_equals(order, [1, 2]);558      });559      t.done();560    }, 1);561  };562  addEventListener('unhandledrejection', l);563  ensureCleanup(t, l);564  Promise.reject(e);565}, 'mutationObserverMicrotask vs. postMessageTask ordering is not disturbed inside unhandledrejection events');566// For workers, postMessageTask() involves posting tasks to other threads, so567// the following tests don't work there.568if ('document' in self) {569  // For the next two see https://github.com/domenic/unhandled-rejections-browser-spec/issues/2#issuecomment-121121695570  // and the following comments.571  async_test(function(t) {572    var sequenceOfEvents = [];573    addEventListener('unhandledrejection', l);574    ensureCleanup(t, l);575    var p1 = Promise.reject();576    var p2;577    postMessageTask(function() {578      p2 = Promise.reject();579      postMessageTask(function() {580        sequenceOfEvents.push('postMessageTask');581        checkSequence();582      });583    });584    function l(ev) {585      if (ev.promise === p1 || ev.promise === p2) {586        sequenceOfEvents.push(ev.promise);587        checkSequence();588      }589    }590    function checkSequence() {591      if (sequenceOfEvents.length === 3) {592        t.step(function() {593          assert_array_equals(sequenceOfEvents, [p1, 'postMessageTask', p2]);594        });595        t.done();596      }597    }598  }, 'postMessageTask ordering vs. the task queued for unhandled rejection notification (1)');599  async_test(function(t) {600    var sequenceOfEvents = [];601    addEventListener('unhandledrejection', l);602    ensureCleanup(t, l);603    var p2;604    postMessageTask(function() {605      p2 = Promise.reject();606      postMessageTask(function() {607        sequenceOfEvents.push('postMessageTask');608        checkSequence();609      });610    });611    function l(ev) {612      if (ev.promise == p2) {613        sequenceOfEvents.push(ev.promise);614        checkSequence();615      }616    }617    function checkSequence() {618      if (sequenceOfEvents.length === 2) {619        t.step(function() {620          assert_array_equals(sequenceOfEvents, ['postMessageTask', p2]);621        });622        t.done();623      }624    }625  }, 'postMessageTask ordering vs. the task queued for unhandled rejection notification (2)');626  async_test(function(t) {627    var sequenceOfEvents = [];628    addEventListener('unhandledrejection', unhandled);629    addEventListener('rejectionhandled', handled);630    ensureCleanup(t, unhandled, handled);631    var p = Promise.reject();632    setTimeout(function() {633      postMessageTask(function() {634        sequenceOfEvents.push('task before catch');635        checkSequence();636      });637      p.catch(function() {638        sequenceOfEvents.push('catch');639        checkSequence();640      });641      postMessageTask(function() {642        sequenceOfEvents.push('task after catch');643        checkSequence();644      });645      sequenceOfEvents.push('after catch');646      checkSequence();647    }, 10);648    function unhandled(ev) {649      if (ev.promise === p) {650        sequenceOfEvents.push('unhandled');651        checkSequence();652      }653    }654    function handled(ev) {655      if (ev.promise === p) {656        sequenceOfEvents.push('handled');657        checkSequence();658      }659    }660    function checkSequence() {661      if (sequenceOfEvents.length === 6) {662        t.step(function() {663          assert_array_equals(sequenceOfEvents,664            ['unhandled', 'after catch', 'catch', 'task before catch', 'handled', 'task after catch']);665        });666        t.done();667      }668    }669  }, 'rejectionhandled is dispatched from a queued task, and not immediately');670}671//672// HELPERS673//674var globalPostMessageCounter = 0;675function postMessageTask(f) {676  if ('document' in self) {677    var message = 'abusingpostmessageforfunandprofit' + globalPostMessageCounter;678    globalPostMessageCounter++;679    var l = function(ev) {680      if (ev.data === message) {681        removeEventListener('message', l);682        f();683      }684    };685    addEventListener('message', l);686    postMessage(message, '*');687  } else {688    var channel = new MessageChannel();689    channel.port1.onmessage = function() { channel.port1.close(); f(); };690    channel.port2.postMessage('abusingpostmessageforfunandprofit');691    channel.port2.close();692  }693}694function mutationObserverMicrotask(f) {695  if ('document' in self) {696    var observer = new MutationObserver(function() { f(); });697    var node = document.createTextNode('');698    observer.observe(node, { characterData: true });699    node.data = 'foo';700  } else {701    // We don't have mutation observers on workers, so just post a promise-based702    // microtask.703    Promise.resolve().then(function() { f(); });704  }705}706function onUnhandledSucceed(t, expectedReason, expectedPromiseGetter) {707  var l = function(ev) {708    if (ev.promise === expectedPromiseGetter()) {709      t.step(function() {710        assert_equals(ev.reason, expectedReason);711        assert_equals(ev.promise, expectedPromiseGetter());712      });713      t.done();714    }715  };716  addEventListener('unhandledrejection', l);717  ensureCleanup(t, l);718}719function onUnhandledFail(t, expectedPromiseGetter) {720  var unhandled = function(evt) {721    if (evt.promise === expectedPromiseGetter()) {722      t.step(function() {723        assert_unreached('unhandledrejection event is not supposed to be triggered');724      });725    }726  };727  var handled = function(evt) {728    if (evt.promise === expectedPromiseGetter()) {729      t.step(function() {730        assert_unreached('rejectionhandled event is not supposed to be triggered');731      });732    }733  };...

Using AI Code Generation

1var wpt = require('wpt-api');2var wpt = new WebPageTest('www.webpagetest.org','API_KEY');3}, function(err, data) {4  if (err) {5    console.error(err);6  } else {7    console.log(data);8  }9});10test.onUnhandledFail(function(data) {11  console.log('unhandledFail', data);12});13var wpt = require('wpt-api');14var wpt = new WebPageTest('www.webpagetest.org','API_KEY');15}, function(err, data) {16  if (err) {17    console.error(err);18  } else {19    console.log(data);20  }21});22test.onTestProgress(function(data) {23  console.log('testProgress', data);24});25var wpt = require('wpt-api');26var wpt = new WebPageTest('www.webpagetest.org','API_KEY');27}, function(err, data) {28  if (err) {29    console.error(err);30  } else {31    console.log(data);32  }33});34test.onTestComplete(function(data) {35  console.log('testComplete', data);36});37var wpt = require('wpt-api');38var wpt = new WebPageTest('www.webpagetest.org','API_KEY');

Using AI Code Generation

1const wpt = require('wpt-api');2const testId = '200827_3R_8e7a6c9d6d9e6f4b1e7b6f4d6e3b6e4c';3wptClient.onUnhandledFail(testId, (err, data) => {4  if (err) {5    console.log(err);6  } else {7    console.log(data);8  }9});10{11  data: {12    data: {13      median: {14        firstView: {

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.