Best JavaScript code snippet using chai
configuration.js
Source:configuration.js  
...63      }64      function badMethodAssertion() {65        expect(42).to.equal(false);66      }67      function badOverwrittenMethodAssertion() {68        expect(42).tmpMethod();69      }70      function badChainableMethodAssertion() {71        expect(42).to.be.a('string');72      }73      function badOverwrittenChainableMethodAssertion() {74        expect(42).tmpChainableMethod();75      }76      describe('when true', function () {77        describe('failed property assertions', function () {78          var caughtErr = '__PRETEST__';79          before(function () {80            chai.config.includeStack = true;81            try {82              badPropertyAssertion();83            } catch (err) {84              caughtErr = err;85            }86          });87          it('should include Chai frames in stack trace', function () {88            expect(caughtErr.stack).to.contain('propertyGetter');89            if (typeof Proxy !== 'undefined' && typeof Reflect !== 'undefined') {90              expect(caughtErr.stack).to.contain('proxyGetter');91            }92          });93          it('should include user frames in stack trace', function () {94            expect(caughtErr.stack).to.contain('badPropertyAssertion');95          });96        });97        describe('failed overwritten property assertions', function () {98          var caughtErr = '__PRETEST__';99          before(function () {100            chai.config.includeStack = true;101            try {102              badOverwrittenPropertyAssertion();103            } catch (err) {104              caughtErr = err;105            }106          });107          it('should include Chai frames in stack trace', function () {108            expect(caughtErr.stack).to.contain('overwritingPropertyGetter');109            if (typeof Proxy !== 'undefined' && typeof Reflect !== 'undefined') {110              expect(caughtErr.stack).to.contain('proxyGetter');111            }112          });113          it('should include user frames in stack trace', function () {114            expect(caughtErr.stack).to.contain('badOverwrittenPropertyAssertion');115          });116        });117        describe('failed method assertions', function () {118          var caughtErr = '__PRETEST__';119          before(function () {120            chai.config.includeStack = true;121            try {122              badMethodAssertion();123            } catch (err) {124              caughtErr = err;125            }126          });127          it('should include Chai frames in stack trace', function () {128            expect(caughtErr.stack).to.contain('methodWrapper');129          });130          it('should include user frames in stack trace', function () {131            expect(caughtErr.stack).to.contain('badMethodAssertion');132          });133        });134        describe('failed overwritten method assertions', function () {135          var caughtErr = '__PRETEST__';136          before(function () {137            chai.config.includeStack = true;138            try {139              badOverwrittenMethodAssertion();140            } catch (err) {141              caughtErr = err;142            }143          });144          it('should include Chai frames in stack trace', function () {145            expect(caughtErr.stack).to.contain('overwritingMethodWrapper');146          });147          it('should include user frames in stack trace', function () {148            expect(caughtErr.stack).to.contain('badOverwrittenMethodAssertion');149          });150        });151        describe('failed chainable method assertions', function () {152          var caughtErr = '__PRETEST__';153          before(function () {154            chai.config.includeStack = true;155            try {156              badChainableMethodAssertion();157            } catch (err) {158              caughtErr = err;159            }160          });161          it('should include Chai frames in stack trace', function () {162            expect(caughtErr.stack).to.contain('chainableMethodWrapper');163          });164          it('should include user frames in stack trace', function () {165            expect(caughtErr.stack).to.contain('badChainableMethodAssertion');166          });167        });168        describe('failed overwritten chainable method assertions', function () {169          var caughtErr = '__PRETEST__';170          before(function () {171            chai.config.includeStack = true;172            try {173              badOverwrittenChainableMethodAssertion();174            } catch (err) {175              caughtErr = err;176            }177          });178          it('should include Chai frames in stack trace', function () {179            expect(caughtErr.stack).to.contain('overwritingChainableMethodWrapper');180          });181          it('should include user frames in stack trace', function () {182            expect(caughtErr.stack).to.contain('badOverwrittenChainableMethodAssertion');183          });184        });185      });186      describe('when false', function () {187        describe('failed property assertions', function () {188          var caughtErr = '__PRETEST__';189          before(function () {190            chai.config.includeStack = false;191            try {192              badPropertyAssertion();193            } catch (err) {194              caughtErr = err;195            }196          });197          it('should not include Chai frames in stack trace', function () {198            expect(caughtErr.stack).to.not.contain('propertyGetter');199            if (typeof Proxy !== 'undefined' && typeof Reflect !== 'undefined') {200              expect(caughtErr.stack).to.not.contain('proxyGetter');201            }202          });203          it('should include user frames in stack trace', function () {204            expect(caughtErr.stack).to.contain('badPropertyAssertion');205          });206        });207        describe('failed overwritten property assertions', function () {208          var caughtErr = '__PRETEST__';209          before(function () {210            chai.config.includeStack = false;211            try {212              badOverwrittenPropertyAssertion();213            } catch (err) {214              caughtErr = err;215            }216          });217          it('should not include Chai frames in stack trace', function () {218            expect(caughtErr.stack).to.not.contain('overwritingPropertyGetter');219            if (typeof Proxy !== 'undefined' && typeof Reflect !== 'undefined') {220              expect(caughtErr.stack).to.not.contain('proxyGetter');221            }222          });223          it('should include user frames in stack trace', function () {224            expect(caughtErr.stack).to.contain('badOverwrittenPropertyAssertion');225          });226        });227        describe('failed method assertions', function () {228          var caughtErr = '__PRETEST__';229          before(function () {230            chai.config.includeStack = false;231            try {232              badMethodAssertion();233            } catch (err) {234              caughtErr = err;235            }236          });237          it('should not include Chai frames in stack trace', function () {238            expect(caughtErr.stack).to.not.contain('methodWrapper');239          });240          it('should include user frames in stack trace', function () {241            expect(caughtErr.stack).to.contain('badMethodAssertion');242          });243        });244        describe('failed overwritten method assertions', function () {245          var caughtErr = '__PRETEST__';246          before(function () {247            chai.config.includeStack = false;248            try {249              badOverwrittenMethodAssertion();250            } catch (err) {251              caughtErr = err;252            }253          });254          it('should not include Chai frames in stack trace', function () {255            expect(caughtErr.stack).to.not.contain('overwritingMethodWrapper');256          });257          it('should include user frames in stack trace', function () {258            expect(caughtErr.stack).to.contain('badOverwrittenMethodAssertion');259          });260        });261        describe('failed chainable method assertions', function () {262          var caughtErr = '__PRETEST__';263          before(function () {264            chai.config.includeStack = false;265            try {266              badChainableMethodAssertion();267            } catch (err) {268              caughtErr = err;269            }270          });271          it('should not include Chai frames in stack trace', function () {272            expect(caughtErr.stack).to.not.contain('chainableMethodWrapper');273          });274          it('should include user frames in stack trace', function () {275            expect(caughtErr.stack).to.contain('badChainableMethodAssertion');276          });277        });278        describe('failed overwritten chainable method assertions', function () {279          var caughtErr = '__PRETEST__';280          before(function () {281            chai.config.includeStack = false;282            try {283              badOverwrittenChainableMethodAssertion();284            } catch (err) {285              caughtErr = err;286            }287          });288          it('should not include Chai frames in stack trace', function () {289            expect(caughtErr.stack).to.not.contain('overwritingChainableMethodWrapper');290          });291          it('should include user frames in stack trace', function () {292            expect(caughtErr.stack).to.contain('badOverwrittenChainableMethodAssertion');293          });294        });295      });296    });297    describe('should interface', function () {298      // Functions that always throw an error299      function badPropertyAssertion() {300        (42).should.be.false;301      }302      function badOverwrittenPropertyAssertion() {303        (42).should.tmpProperty;304      }305      function badMethodAssertion() {306        (42).should.equal(false);307      }308      function badOverwrittenMethodAssertion() {309        (42).should.tmpMethod();310      }311      function badChainableMethodAssertion() {312        (42).should.be.a('string');313      }314      function badOverwrittenChainableMethodAssertion() {315        (42).should.tmpChainableMethod();316      }317      describe('when true', function () {318        describe('failed property assertions', function () {319          var caughtErr = '__PRETEST__';320          before(function () {321            chai.config.includeStack = true;322            try {323              badPropertyAssertion();324            } catch (err) {325              caughtErr = err;326            }327          });328          it('should include Chai frames in stack trace', function () {329            expect(caughtErr.stack).to.contain('propertyGetter');330            if (typeof Proxy !== 'undefined' && typeof Reflect !== 'undefined') {331              expect(caughtErr.stack).to.contain('proxyGetter');332            }333          });334          it('should include user frames in stack trace', function () {335            expect(caughtErr.stack).to.contain('badPropertyAssertion');336          });337        });338        describe('failed overwritten property assertions', function () {339          var caughtErr = '__PRETEST__';340          before(function () {341            chai.config.includeStack = true;342            try {343              badOverwrittenPropertyAssertion();344            } catch (err) {345              caughtErr = err;346            }347          });348          it('should include Chai frames in stack trace', function () {349            expect(caughtErr.stack).to.contain('overwritingPropertyGetter');350            if (typeof Proxy !== 'undefined' && typeof Reflect !== 'undefined') {351              expect(caughtErr.stack).to.contain('proxyGetter');352            }353          });354          it('should include user frames in stack trace', function () {355            expect(caughtErr.stack).to.contain('badOverwrittenPropertyAssertion');356          });357        });358        describe('failed method assertions', function () {359          var caughtErr = '__PRETEST__';360          before(function () {361            chai.config.includeStack = true;362            try {363              badMethodAssertion();364            } catch (err) {365              caughtErr = err;366            }367          });368          it('should include Chai frames in stack trace', function () {369            expect(caughtErr.stack).to.contain('methodWrapper');370          });371          it('should include user frames in stack trace', function () {372            expect(caughtErr.stack).to.contain('badMethodAssertion');373          });374        });375        describe('failed overwritten method assertions', function () {376          var caughtErr = '__PRETEST__';377          before(function () {378            chai.config.includeStack = true;379            try {380              badOverwrittenMethodAssertion();381            } catch (err) {382              caughtErr = err;383            }384          });385          it('should include Chai frames in stack trace', function () {386            expect(caughtErr.stack).to.contain('overwritingMethodWrapper');387          });388          it('should include user frames in stack trace', function () {389            expect(caughtErr.stack).to.contain('badOverwrittenMethodAssertion');390          });391        });392        describe('failed chainable method assertions', function () {393          var caughtErr = '__PRETEST__';394          before(function () {395            chai.config.includeStack = true;396            try {397              badChainableMethodAssertion();398            } catch (err) {399              caughtErr = err;400            }401          });402          it('should include Chai frames in stack trace', function () {403            expect(caughtErr.stack).to.contain('chainableMethodWrapper');404          });405          it('should include user frames in stack trace', function () {406            expect(caughtErr.stack).to.contain('badChainableMethodAssertion');407          });408        });409        describe('failed overwritten chainable method assertions', function () {410          var caughtErr = '__PRETEST__';411          before(function () {412            chai.config.includeStack = true;413            try {414              badOverwrittenChainableMethodAssertion();415            } catch (err) {416              caughtErr = err;417            }418          });419          it('should include Chai frames in stack trace', function () {420            expect(caughtErr.stack).to.contain('overwritingChainableMethodWrapper');421          });422          it('should include user frames in stack trace', function () {423            expect(caughtErr.stack).to.contain('badOverwrittenChainableMethodAssertion');424          });425        });426      });427      describe('when false', function () {428        describe('failed property assertions', function () {429          var caughtErr = '__PRETEST__';430          before(function () {431            chai.config.includeStack = false;432            try {433              badPropertyAssertion();434            } catch (err) {435              caughtErr = err;436            }437          });438          it('should not include Chai frames in stack trace', function () {439            expect(caughtErr.stack).to.not.contain('propertyGetter');440            if (typeof Proxy !== 'undefined' && typeof Reflect !== 'undefined') {441              expect(caughtErr.stack).to.not.contain('proxyGetter');442            }443          });444          it('should include user frames in stack trace', function () {445            expect(caughtErr.stack).to.contain('badPropertyAssertion');446          });447        });448        describe('failed overwritten property assertions', function () {449          var caughtErr = '__PRETEST__';450          before(function () {451            chai.config.includeStack = false;452            try {453              badOverwrittenPropertyAssertion();454            } catch (err) {455              caughtErr = err;456            }457          });458          it('should not include Chai frames in stack trace', function () {459            expect(caughtErr.stack).to.not.contain('overwritingPropertyGetter');460            if (typeof Proxy !== 'undefined' && typeof Reflect !== 'undefined') {461              expect(caughtErr.stack).to.not.contain('proxyGetter');462            }463          });464          it('should include user frames in stack trace', function () {465            expect(caughtErr.stack).to.contain('badOverwrittenPropertyAssertion');466          });467        });468        describe('failed method assertions', function () {469          var caughtErr = '__PRETEST__';470          before(function () {471            chai.config.includeStack = false;472            try {473              badMethodAssertion();474            } catch (err) {475              caughtErr = err;476            }477          });478          it('should not include Chai frames in stack trace', function () {479            expect(caughtErr.stack).to.not.contain('methodWrapper');480          });481          it('should include user frames in stack trace', function () {482            expect(caughtErr.stack).to.contain('badMethodAssertion');483          });484        });485        describe('failed overwritten method assertions', function () {486          var caughtErr = '__PRETEST__';487          before(function () {488            chai.config.includeStack = false;489            try {490              badOverwrittenMethodAssertion();491            } catch (err) {492              caughtErr = err;493            }494          });495          it('should not include Chai frames in stack trace', function () {496            expect(caughtErr.stack).to.not.contain('overwritingMethodWrapper');497          });498          it('should include user frames in stack trace', function () {499            expect(caughtErr.stack).to.contain('badOverwrittenMethodAssertion');500          });501        });502        describe('failed chainable method assertions', function () {503          var caughtErr = '__PRETEST__';504          before(function () {...Using AI Code Generation
1var chai = require('chai');2var assert = chai.assert;3var expect = chai.expect;4var should = chai.should();5var badOverwrittenMethodAssertion = require('bad-overwritten-method-assertion');6badOverwrittenMethodAssertion(chai, assert, expect, should);7var obj = {8    method: function() {9        return 'original';10    }11};12describe('badOverwrittenMethodAssertion', function() {13    it('should not fail when the method is not overwritten', function() {14        expect(obj.method()).to.equal('original');15    });16    it('should fail when the method is overwritten', function() {17        obj.method = function() {18            return 'overwritten';19        };20        expect(obj.method()).to.equal('original');21    });22});Using AI Code Generation
1var chai = require('chai');2var expect = chai.expect;3var assert = chai.assert;4var should = chai.should();5var chaiAsPromised = require('chai-as-promised');6chai.use(chaiAsPromised);7var chai = require('chai');8var expect = chai.expect;9var assert = chai.assert;10var should = chai.should();11var chaiAsPromised = require('chai-as-promised');12chai.use(chaiAsPromised);13var chai = require('chai');14var expect = chai.expect;15var assert = chai.assert;16var should = chai.should();17var chaiAsPromised = require('chai-as-promised');18chai.use(chaiAsPromised);19var chai = require('chai');20var expect = chai.expect;21var assert = chai.assert;22var should = chai.should();23var chaiAsPromised = require('chai-as-promised');24chai.use(chaiAsPromised);25var chaiAsPromised = require('chai-as-promised');26chai.use(chaiAsPromised);27var chai = require('chai');28var expect = chai.expect;29var assert = chai.assert;30var should = chai.should();31var chaiAsPromised = require('chai-as-promised');32chai.use(chaiAsPromised);33var chai = require('chai');34var expect = chai.expect;35var assert = chai.assert;36var should = chai.should();37var chaiAsPromised = require('chai-as-promised');38chai.use(chaiAsPromised);39var chai = require('chai');40var expect = chai.expect;41var assert = chai.assert;42var should = chai.should();43var chaiAsPromised = require('chai-as-promised');44chai.use(chaiAsPromised);45var chai = require('chai');46var expect = chai.expect;47var assert = chai.assert;48var should = chai.should();49var chaiAsPromised = require('chai-as-promised');50chai.use(chaiAsPromised);51var chai = require('Using AI Code Generation
1import chai from 'chai';2import chaiAsPromised from 'chai-as-promised';3chai.use(chaiAsPromised);4import {badOverwrittenMethodAssertion} from 'chai-as-promised';5chai.use(function (chai, utils) {6  var Assertion = chai.Assertion;7  Assertion.overwriteMethod('equal', badOverwrittenMethodAssertion);8});9import {expect} from 'chai';10import {somePromise} from './somePromise.js';11describe('somePromise', function () {12  it('should be rejected with error', function () {13    return expect(somePromise()).to.eventually.be.rejectedWith(Error);14  });15});16      at Assertion.overwriteMethod (node_modules/chai/lib/chai/utils/addMethod.js:95:56)17      at Object.<anonymous> (test/test.js:7:15)18export function badOverwrittenMethodAssertion(_super) {19  return function () {20    var result = _super.apply(this, arguments);21    this.assert(false, 'overwriting method is not supported', 'overwriting method is not supported');22    return result;23  };24}Using AI Code Generation
1var assert = require('chai').assert;2var badOverwrittenMethodAssertion = require('../badOverwrittenMethodAssertion');3var assert = require('chai').assert;4var badOverwrittenMethodAssertion = require('../badOverwrittenMethodAssertion');5var assert = require('chai').assert;6var badOverwrittenMethodAssertion = require('../badOverwrittenMethodAssertion');7describe('badOverwrittenMethodAssertion', function() {8  it('should return true when the method is overwritten', function() {9    var obj = {10      method: function() {}11    };12    var obj2 = {13      method: function() {}14    };15    assert.equal(badOverwrittenMethodAssertion(obj, obj2), true);16  });17  it('should return false when the method is not overwritten', function() {18    var obj = {19      method: function() {}20    };21    var obj2 = {22      method: function() {}23    };24    assert.equal(badOverwrittenMethodAssertion(obj, obj2), false);25  });26});Using AI Code Generation
1var chai = require('chai');2var assert = chai.assert;3var expect = chai.expect;4var should = chai.should();5describe('badOverwrittenMethodAssertion', function() {6  it('should return true', function() {7    badOverwrittenMethodAssertion().should.be.true;8  });9});10module.exports = badOverwrittenMethodAssertion;11function badOverwrittenMethodAssertion() {12  var obj = {13  };14  Object.defineProperty(obj, 'a', {15    get: function() {16      return 1;17    },18    set: function() {19      return 2;20    }21  });22  return obj.a === 1;23}24var chai = require('chai');25var assert = chai.assert;26var expect = chai.expect;27var should = chai.should();28describe('badOverwrittenMethodAssertion', function() {29  it('should return true', function() {30    badOverwrittenMethodAssertion().should.be.true;31  });32});33module.exports = badOverwrittenMethodAssertion;34function badOverwrittenMethodAssertion() {35  var obj = {36  };37  Object.defineProperty(obj, 'a', {38    get: function() {39      return 1;40    },41    set: function() {42      return 2;43    }44  });45  return obj.a === 1;46}47var chai = require('chai');48var assert = chai.assert;49var expect = chai.expect;50var should = chai.should();51describe('badOverwrittenMethodAssertion', function() {52  it('should return true', function() {Using AI Code Generation
1var chai = require('chai');2var expect = chai.expect;3var obj = {4  method: function() {5    return 1;6  }7};8expect(obj).to.have.property('method');9obj.method = function() {10  return 2;11};12expect(obj).to.have.property('method').that.is.a('function');13expect(obj).to.have.property('method').that.returns(1);14expect(obj).to.have.property('method').that.returns(2);15expect(obj).to.have.property('method').that.returns(3);16expect(obj).to.have.property('method').that.returns(4);17expect(obj).to.have.property('method').that.returns(5);18expect(obj).to.have.property('method').that.returns(6);19expect(obj).to.have.property('method').that.returns(7);20expect(obj).to.have.property('method').that.returns(8);21expect(obj).to.have.property('method').that.returns(9);22expect(obj).to.have.property('method').that.returns(10);23expect(obj).to.have.property('method').that.returns(11);24expect(obj).to.have.property('method').that.returns(12);25expect(obj).to.have.property('method').that.returns(13);26expect(obj).to.have.property('method').that.returns(14);27expect(obj).to.have.property('method').that.returns(15);28expect(obj).to.have.property('method').that.returns(16);29expect(obj).to.have.property('method').that.returns(17);30expect(obj).to.have.property('method').that.returns(18);31expect(obj).to.have.property('method').that.returns(19);32expect(obj).to.have.property('method').that.returns(20);33expect(obj).to.have.property('method').that.returns(21);34expect(obj).to.have.propertyUsing AI Code Generation
1const chai = require('chai');2const expect = chai.expect;3const assert = chai.assert;4const badOverwrittenMethodAssertion = require('../index');5describe('badOverwrittenMethodAssertion', function() {6  it('should throw error if method is overwritten', function() {7    const obj = {8      method: function() {9        return 'hello';10      }11    };12    expect(function() {13      badOverwrittenMethodAssertion(obj, 'method', 'hello');14    }).to.throw('method is overwritten');15  });16  it('should not throw error if method is not overwritten', function() {17    const obj = {18      method: function() {19        return 'hello';20      }21    };22    expect(function() {23      badOverwrittenMethodAssertion(obj, 'method', 'world');24    }).to.not.throw('method is overwritten');25  });26});Using AI Code Generation
1const chai = require("chai");2const chaiHttp = require("chai-http");3const server = require("../server");4const expect = chai.expect;5chai.use(chaiHttp);6chai.should();7describe("GET /", () => {8  it("should return 200 OK", (done) => {9      .request(server)10      .get("/")11      .end((err, res) => {12        res.should.have.status(200);13        done();14      });15  });16});Using AI Code Generation
1var assert = require('chai').assert;2var badOverwrittenMethodAssertion = require('../src/badOverwrittenMethodAssertion');3var myObject = {4   myMethod: function() {5       return 'hello world';6   }7};8assert.myMethod = function() {9   return 'hello world';10};11assert.overwriteMethod(myObject, 'myMethod', badOverwrittenMethodAssertion);12myObject.myMethod();Using AI Code Generation
1var chai = require('chai');2var should = chai.should();3var foo = {4  bar: function() {5    return 'bar';6  }7};8var foo2 = {9  bar: function() {10    return 'bar2';11  }12};13foo.should.have.property('bar').that.is.a('function');14var chai = require('chai');15var should = chai.should();16var foo = {17  bar: function() {18    return 'bar';19  }20};21var foo2 = {22  bar: function() {23    return 'bar2';24  }25};26foo.should.have.property('bar').that.is.a('function');27var chai = require('chai');28var should = chai.should();29var foo = {30  bar: function() {31    return 'bar';32  }33};34var foo2 = {35  bar: function() {36    return 'bar2';37  }38};39foo.should.have.property('bar').that.is.a('function');40var chai = require('chai');41var should = chai.should();42var foo = {43  bar: function() {44    return 'bar';45  }46};47var foo2 = {48  bar: function() {49    return 'bar2';50  }51};52foo.should.have.property('bar').that.is.a('function');53chai.assert.badOverwrittenMethod(fooLearn 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.
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