testing/mochitest/tests/browser/browser_fail_add_task.js

changeset 0
6474c204b198
     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/testing/mochitest/tests/browser/browser_fail_add_task.js	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,57 @@
     1.4 +/* Any copyright is dedicated to the Public Domain.
     1.5 + * http://creativecommons.org/publicdomain/zero/1.0/ */
     1.6 +
     1.7 +"use strict";
     1.8 +
     1.9 +// This test is designed to fail.
    1.10 +// It ensures that throwing an asynchronous error from add_task will
    1.11 +// fail the test.
    1.12 +
    1.13 +let passedTests = 0;
    1.14 +
    1.15 +function rejectWithTimeout(error = undefined) {
    1.16 +  let deferred = Promise.defer();
    1.17 +  executeSoon(function() {
    1.18 +    ok(true, "we get here after a timeout");
    1.19 +    deferred.reject(error);
    1.20 +  });
    1.21 +  return deferred.promise;
    1.22 +}
    1.23 +
    1.24 +add_task(function failWithoutError() {
    1.25 +  try {
    1.26 +    yield rejectWithTimeout();
    1.27 +  } finally {
    1.28 +    ++passedTests;
    1.29 +  }
    1.30 +});
    1.31 +
    1.32 +add_task(function failWithString() {
    1.33 +  try {
    1.34 +    yield rejectWithTimeout("Meaningless error");
    1.35 +  } finally {
    1.36 +    ++passedTests;
    1.37 +  }
    1.38 +});
    1.39 +
    1.40 +add_task(function failWithoutInt() {
    1.41 +  try {
    1.42 +    yield rejectWithTimeout(42);
    1.43 +  } finally {
    1.44 +    ++passedTests;
    1.45 +  }
    1.46 +});
    1.47 +
    1.48 +
    1.49 +// This one should display a stack trace
    1.50 +add_task(function failWithError() {
    1.51 +  try {
    1.52 +    yield rejectWithTimeout(new Error("This is an error"));
    1.53 +  } finally {
    1.54 +    ++passedTests;
    1.55 +  }
    1.56 +});
    1.57 +
    1.58 +add_task(function done() {
    1.59 +  is(passedTests, 4, "Passed all tests");
    1.60 +});

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