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How to use thrown2Error method in Mocha

Best JavaScript code snippet using mocha

runner.js

Source:runner.js

...113    }114    ++this.failures;115    test.state = 'failed';116    if (!isError(err)) {117      err = thrown2Error(err);118    }119    // TODO filter stack trace120    this.emit('fail', test, err);121  }122  failHook(hook, err) {123    hook.originalTitle = hook.originalTitle || hook.title;124    if (hook.ctx && hook.ctx.currentTest) {125      hook.title =126        hook.originalTitle + ' for ' + `"${hook.ctx.currentTest.title}"`;127    } else {128      var parentTitle;129      if (hook.parent.title) {130        parentTitle = hook.parent.title;131      } else {132        parentTitle = hook.parent.root ? '{root}' : '';133      }134      hook.title = hook.originalTitle + ' in ' + `"parentTitle"`;135    }136    this.fail(hook, err);137  }138  hook(name, fn) {139    var suite = this.suite;140    var hooks = suite.getHooks(name);141    var self = this;142    function next(i) {143      var hook = hooks[i];144      if (!hook) {145        return fn();146      }147      self.currentRunnable = hook;148      if (name === 'beforeAll') {149        hook.ctx.currentTest = hook.parent.tests[0];150      } else if (name === 'afterAll') {151        hook.ctx.currentTest = hook.parent.tests[hook.parent.tests.length - 1];152      } else {153        hook.ctx.currentTest = self.test;154      }155      hook.allowUncaught = self.allowUncaught;156      self.emit('hook', hook);157      if (!hook.listeners('error').length) {158        hook.on('error', function(err) {159          self.failHook(hook, err);160        });161      }162      hook.run(function(err) {163        var testError = hook.error();164        if (testError) {165          self.fail(self.test, testError);166        }167        if (err) {168          if (err instanceof Pending) {169            if (name === 'afterAll') {170              throw new Error('Skipping a test within an "after all" hook is forbidden.');171            }172            if (name === 'beforeEach' || name === 'afterEach') {173              if (self.test) {174                self.test.pending = true;175              }176            } else {177              suite.tests.forEach(function(test) {178                test.pending = true;179              });180              suite.suites.forEach(function(suite) {181                suite.pending = true;182              });183              hook.pending = true;184            }185          } else {186            self.failHook(hook, err);187            return fn(err);188          }189        }190        self.emit('hook end', hook);191        delete hook.ctx.currentTest;192        next(++i);193      });194    }195    next(0);196  }197  hooks(name, suites, fn) {198    var self = this;199    var orig = this.suite;200    function next(suite) {201      self.suite = suite;202      if (!suite) {203        self.suite = orig;204        return fn();205      }206      self.hook(name, function(err) {207        if (err) {208          var errSuite = self.suite;209          self.suite = orig;210          return fn(err, errSuite);211        }212        next(suites.pop());213      });214    }215    next(suites.pop());216  }217  hookUp(name, fn) {218    var suites = [this.suite].concat(this.parents()).reverse();219    this.hooks(name, suites, fn);220  }221  hookDown(name, fn) {222    var suites = [this.suite].concat(this.parents());223    this.hooks(name, suites, fn);224  }225  parents() {226    var suite = this.suite;227    var suites = [];228    while (suite.parent) {229      suite = suite.parent;230      suites.push(suite);231    }232    return suites;233  }234  runTest(fn) {235    var self = this;236    var test = this.test;237    if (!test) {238      return;239    }240    var suite = this.parents().reverse()[0] || this.suite;241    if (this.forbidOnly && suite.hasOnly()) {242      fn(new Error('`.only` forbidden'));243      return;244    }245    test.on('error', function(err) {246      self.fail(test, err);247    });248    if (this.allowUncaught) {249      test.allowUncaught = true;250      return test.run(fn);251    }252    try {253      test.run(fn);254    } catch (err) {255      fn(err);256    }257  }258  runTests(suite, fn) {259    var self = this;260    var tests = suite.tests.slice();261    var test;262    function hookErr(_, errSuite, after) {263      var orig = self.suite;264      self.suite = after ? errSuite.parent : errSuite;265      if (self.suite) {266        self.hookUp('afterEach', function(err2, errSuite2) {267          self.suite = orig;268          if (err2) {269            return hookErr(err2, errSuite2, true);270          }271          fn(errSuite);272        });273      } else {274        self.suite = orig;275        fn(errSuite);276      }277    }278    function next(err, errSuite) {279      if (self.failures && suite._bail) {280        tests = [];281      }282      if (self._abort) {283        return fn();284      }285      if (err) {286        return hookErr(err, errSuite, true);287      }288      test = tests.shift();289      if (!test) {290        return fn();291      }292      var match = self._grep.test(test.fullTitle());293      if (self._invert) {294        match = !match;295      }296      if (!match) {297        next();298        return;299      }300      if (test.isPending()) {301        if (self.forbidPending) {302          test.isPending = () => false;303          self.fail(test, new Error('Pending test forbidden'));304          delete test.isPending;305        } else {306          self.emit('pending', test);307        }308        self.emit('test end', test);309        return next();310      }311      self.emit('test', (self.test = test));312      self.hookDown('beforeEach', function(err, errSuite) {313        if (test.isPending()) {314          if (self.forbidPending) {315            test.isPending = () => false;316            self.fail(test, new Error('Pending test forbidden'));317            delete test.isPending;318          } else {319            self.emit('pending', test);320          }321          self.emit('test end', test);322          return next();323        }324        if (err) {325          return hookErr(err, errSuite, false);326        }327        self.currentRunnable = self.test;328        self.runTest(function(err) {329          test = self.test;330          if (err) {331            var retry = test.currentRetry();332            if (err instanceof Pending && self.forbidPending) {333              self.fail(test, new Error('Pending test forbidden'));334            } else if (err instanceof Pending) {335              test.pending = true;336              self.emit('pending', test);337            } else if (retry < test.retries()) {338              var clonedTest = test.clone();339              clonedTest.currentRetry(retry + 1);340              tests.unshift(clonedTest);341              self.emit('retry', test, err);342              return self.hookUp('afterEach', next);343            } else {344              self.fail(test, err);345            }346            self.emit('test end', test);347            if (err instanceof Pending) {348              return next();349            }350            return self.hookUp('afterEach', next);351          }352          test.state = 'passed';353          self.emit('pass', test);354          self.emit('test end', test);355          self.hookUp('afterEach', next);356        });357      });358    }359    this.next = next;360    this.hookErr = hookErr;361    next();362  }363  runSuite(suite, fn) {364    var i = 0;365    var self = this;366    var total = this.grepTotal(suite);367    var afterAllHookCalled = false;368    if (!total || (self.failures && suite._bail)) {369      return fn();370    }371    this.emit('suite', (this.suite = suite));372    function next(errSuite) {373      if (errSuite) {374        if (errSuite === suite) {375          return done();376        }377        return done(errSuite);378      }379      if (self._abort) {380        return done();381      }382      var curr = suite.suites[i++];383      if (!curr) {384        return done();385      }386      self.runSuite(curr, next);387    }388    function done(errSuite) {389      self.suite = suite;390      self.nextSuite = next;391      if (afterAllHookCalled) {392        fn(errSuite);393      } else {394        afterAllHookCalled = true;395        delete self.test;396        self.hook('afterAll', function() {397          self.emit('suite end', suite);398          fn(errSuite);399        });400      }401    }402    this.nextSuite = next;403    this.hook('beforeAll', function(err) {404      if (err) {405        return done();406      }407      self.runTests(suite, next);408    });409  }410  uncaught(err) {411    if (err instanceof Pending) {412      return;413    }414    if (!err) {415      err = createInvalidExceptionError(416        'Caught falsy/undefined exception which would otherwise be uncaught. No stack trace found; try a debugger',417        err418      );419    }420    if (!isError(err)) {421      err = thrown2Error(err);422    }423    err.uncaught = true;424    var runnable = this.currentRunnable;425    if (!runnable) {426      runnable = new Runnable('Uncaught error outside test suite');427      runnable.parent = this.suite;428      if (this.started) {429        this.fail(runnable, err);430      } else {431        this.emit('start');432        this.fail(runnable, err);433        this.emit('end');434      }435      return;436    }437    if (runnable.isFailed() || runnable.isPending()) {438      return;439    }440    var alreadyPassed = runnable.isPassed();441    this.fail(runnable, err);442    if (!alreadyPassed) {443      if (runnable.type === 'test') {444        this.emit('test end', runnable);445        this.hookUp('afterEach', this.next);446        return;447      }448      var errSuite = this.suite;449      if (runnable.fullTitle().indexOf('after each') > -1) {450        return this.hookErr(err, errSuite, true);451      }452      if (runnable.fullTitle().indexOf('before each') > -1) {453        return this.hookErr(err, errSuite, false);454      }455      return this.nextSuite(errSuite);456    }457    this.emit('end');458  }459  run(fn) {460    var self = this;461    var rootSuite = this.suite;462    fn = fn || function() {};463    function uncaught(err) {464      self.uncaught(err);465    }466    function start() {467      if (rootSuite.hasOnly()) {468        rootSuite.filterOnly();469      }470      self.started = true;471      if (self._delay) {472        self.emit('ready');473      }474      self.emit('start');475      self.runSuite(rootSuite, function() {476        self.emit('end');477      });478    }479    this.on('suite end', function(suite) {480      suite.cleanReferences();481    });482    this.on('end', function() {483      process.removeListener('uncaughtException', uncaught);484      fn(self.failures);485    });486    process.on('uncaughtException', uncaught);487    if (this._delay) {488      this.emit('waiting', rootSuite);489      rootSuite.once('run', start);490    } else {491      start();492    }493    return this;494  }495  abort() {496    this._abort = true;497    return this;498  }499}500function filterLeaks(ok, globals) {501  return globals.filter(function(key) {502    if (/^\d+/.test(key)) {503      return false;504    }505    if (/^mocha-/.test(key)) {506      return false;507    }508    var matched = ok.filter(function(ok) {509      if (~ok.indexOf('*')) {510        return key.indexOf(ok.split('*')[0]) === 0;511      }512      return key === ok;513    });514    return !matched.length && (!global.navigator || key !== 'onerror');515  });516}517function isError(err) {518  return err instanceof Error || (err && typeof err.message === 'string');519}520function thrown2Error(err) {521  return new Error(522    util.inspect(err) + ' was thrown, throw an Error :)'523  );524}525function extraGlobals() {526  if (typeof process === 'object' && typeof process.version === 'string') {527    var parts = process.version.split('.');528    var nodeVersion = parts.reduce(function(a, v) {529      return (a << 8) | v;530    });531    // 'errno' was renamed to process._errno in v0.9.11.532    if (nodeVersion < 0x00090b) {533      return ['errno'];534    }...

Using AI Code Generation

1var should = require('should');2var assert = require('assert');3var foo = 'bar';4var beverages = { tea: [ 'chai', 'matcha', 'oolong' ] };5describe('Test', function() {6    describe('Test', function() {7        it('should test something', function(done) {8            try {9                assert.equal(foo, 'bar');10                assert.equal(beverages, { tea: [ 'chai', 'matcha', 'oolong' ] });11                assert.ok('everything', 'everything is ok');12                assert.equal(null, undefined);13            } catch (e) {14                done(e);15            }16        });17    });18});

Using AI Code Generation

1const { thrown2Error } = require('mocha');2const chai = require('chai');3const expect = chai.expect;4const chaiHttp = require('chai-http');5chai.use(chaiHttp);6const app = require('../app');7describe('Test', function () {8  it('should return 200 status code', function (done) {9    chai.request(app)10      .get('/')11      .end((err, res) => {12        if (err) {13          thrown2Error(err);14        }15        expect(res).to.have.status(200);16        done();17      });18  });19});

Using AI Code Generation

1var assert = require('chai').assert;2var expect = require('chai').expect;3var should = require('chai').should();4var thrown2Error = require('chai').thrown2Error;5describe('test', function() {6    it('should throw an error', function() {7        expect(function() {8            throw new Error('Error!');9        }).to.throw2Error();10    });11});

Using AI Code Generation

1var assert = require('assert');2var expect = require('chai').expect;3var should = require('chai').should();4describe('Test', function() {5  it('should throw an error', function() {6    expect(function() {7      throw new Error('error');8    }).to.throw('error');9  });10});11var assert = require('assert');12var expect = require('chai').expect;13var should = require('chai').should();14describe('Test', function() {15  it('should throw an error', function() {16    expect(function() {17      throw new Error('error');18    }).to.throw('error');19  });20});21var assert = require('assert');22var expect = require('chai').expect;23var should = require('chai').should();24describe('Test', function() {25  it('should throw an error', function() {26    expect(function() {27      throw new Error('error');28    }).to.throw('error');29  });30});31var assert = require('assert');32var expect = require('chai').expect;33var should = require('chai').should();34describe('Test', function() {35  it('should throw an error', function() {36    expect(function() {37      throw new Error('error');38    }).to.throw('error');39  });40});41var assert = require('assert');42var expect = require('chai').expect;43var should = require('chai').should();44describe('Test', function() {45  it('should throw an error', function() {46    expect(function() {47      throw new Error('error');48    }).to.throw('error');49  });50});51var assert = require('assert');52var expect = require('chai').expect;53var should = require('chai').should();54describe('Test', function() {55  it('should throw an error', function() {56    expect(function() {57      throw new Error('error');58    }).to.throw('error');59  });60});

Using AI Code Generation

1const assert = require('assert');2const { test } = require('mocha');3function add(a, b) {4  return a + b;5}6it('should return 5 when add(2,3)', () => {7  assert.equal(add(2, 3), 5);8});9const assert = require('assert');10const { test } = require('mocha');11function add(a, b) {12  return a + b;13}14describe('Math', () => {15  before(() => {16    console.log('before');17  });18  beforeEach(() => {19    console.log('beforeEach');20  });21  after(() => {22    console.log('after');23  });24  afterEach(() => {25    console.log('afterEach');26  });27  it('should return 5 when add(2,3)', () => {28    assert.equal(add(2, 3), 5);29  });30  it('should return 5 when add(2,3)', () => {31    assert.equal(add(2, 3), 5);32  });33});34const assert = require('assert');35const { test } = require('mocha');36function add(a, b) {37  return a + b;38}39describe('Math', () => {40  it('should return 5 when add(2,3)', () => {41    assert.equal(add(2, 3), 5);42  });43  it('should return 5 when add(2,3)', () => {

Using AI Code Generation

1var thrown2Error = require('mocha-thrown2error');2var chai = require('chai');3var expect = chai.expect;4describe('test', function () {5    it('should throw an error', function () {6        var error = thrown2Error(function () {7            throw new Error('test');8        });9        expect(error).to.be.an('error');10        expect(error.message).to.equal('test');11    });12});

Using AI Code Generation

1const assert = require('assert');2const should = require('should');3const {expect} = require('chai');4const {add, subtract, multiply, divide} = require('../src/math');5describe('Math', () => {6    describe('add', () => {7        it('should add two numbers', () => {8            const result = add(1, 2);9            result.should.equal(3);10        });11        it('should throw an error if any argument is not a number', () => {12            expect(() => add('a', 2)).to.throw();13        });14    });15    describe('subtract', () => {16        it('should subtract two numbers', () => {17            const result = subtract(1, 2);18            result.should.equal(-1);19        });20        it('should throw an error if any argument is not a number', () => {21            expect(() => subtract('a', 2)).to.throw();22        });23    });24    describe('multiply', () => {25        it('should multiply two numbers', () => {26            const result = multiply(1, 2);27            result.should.equal(2);28        });29        it('should throw an error if any argument is not a number', () => {30            expect(() => multiply('a', 2)).to.throw();31        });32    });33    describe('divide', () => {34        it('should divide two numbers', () => {35            const result = divide(1, 2);36            result.should.equal(0.5);37        });38        it('should throw an error if any argument is not a number', () => {39            expect(() => divide('a', 2)).to.throw();40        });41    });42});43const add = (a, b) => {44    if (typeof a !== 'number' || typeof b !== 'number') {45        throw new Error('a and b must be numbers');46    }47    return a + b;48};49const subtract = (a, b) => {50    if (typeof a !== 'number' || typeof b !== 'number') {51        throw new Error('a and b must be numbers');52    }53    return a - b;54};55const multiply = (a, b) => {56    if (typeof a !== 'number' || typeof b !== 'number') {57        throw new Error('a and b must be numbers');58    }

Using AI Code Generation

1const {thrown2Error} = require('mocha/lib/utils');2const {expect} = require('chai');3describe('thow2Error', () => {4  it('should throw an error', () => {5    const error = thrown2Error(() => {6      throw new Error('foo');7    });8    expect(error).to.be.an.instanceOf(Error);9    expect(error.message).to.equal('foo');10  });11  it('should throw an error with a string', () => {12    const error = thrown2Error(() => {13      throw 'foo';14    });15    expect(error).to.be.an.instanceOf(Error);16    expect(error.message).to.equal('foo');17  });18  it('should throw an error with a string and a function', () => {19    const error = thrown2Error(() => {20      throw 'foo';21    }, 'bar');22    expect(error).to.be.an.instanceOf(Error);23    expect(error.message).to.equal('bar: foo');24  });25  it('should throw an error with a string and a function and a string', () => {26    const error = thrown2Error(() => {27      throw 'foo';28    }, 'bar', 'baz');29    expect(error).to.be.an.instanceOf(Error);30    expect(error.message).to.equal('baz: bar: foo');31  });32});33const {expect} = require('chai');34const {thrown2Error} = require('mocha/lib/utils');35describe('thrown2Error', () => {36  it('should throw an error', () => {37    const error = thrown2Error(() => {38      throw new Error('foo');39    });40    expect(error).to.be.an.instanceOf(Error);41    expect(error.message).to.equal('foo');42  });43  it('should throw an error with a string', () => {44    const error = thrown2Error(() => {45      throw 'foo';46    });47    expect(error).to.be.an.instanceOf(Error);48    expect(error.message).to.equal('foo');49  });50  it('should throw an error with a string and a function', () => {51    const error = thrown2Error(() => {52      throw 'foo';53    }, 'bar');54    expect(error).to.be.an.instanceOf(Error);55    expect(error.message).to.equal('bar: foo');56  });57  it('should throw an error with a string and a function and a string', ()

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