javascript - start - TypeError: expect(…).to.be no es una función

karma start

Question

Estoy configurando mi marco Karma y mocha con gruñido en mi proyecto. Cuando estoy ejecutando karma start, obtengo el error que se menciona a continuación.

Recibo este error en mi consola mientras ejecuto el comando: Karma start

TypeError: expect(...).to.be is not a function

Mi karma.confjs

// Karma configuration
// Generated on Fri Nov 27 2015 11:48:47 GMT+0530 (India Standard Time)
module.exports = function(config) {
config.set({
// base path that will be used to resolve all patterns (eg. files, exclude)
basePath: '''',
// frameworks to use
// available frameworks: https://npmjs.org/browse/keyword/karma-adapter
frameworks: [''mocha'', ''chai''],
// list of files / patterns to load in the browser
files: [
''bower_components/angular/angular.js'',
''bower_components/angular-mocks/angular-mocks.js'',
''app/*.js'',
// ''test/specs/*.js'',
''test/specs/array.js'',
// ''test/specs/myCtlr-spec.js'',
//''test/*.js''
],
// list of files to exclude
exclude: [
],
// preprocess matching files before serving them to the browser
// available preprocessors: https://npmjs.org/browse/keyword/karma-preprocessor
preprocessors: {
},
// test results reporter to use
// possible values: ''dots'', ''progress''
// available reporters: https://npmjs.org/browse/keyword/karma-reporter
reporters: [''progress'',''coverage''],
preprocessors: {
''src/app/**/*.js'': [''coverage'']
},
coverageReporter: {
type: ''lcov'',
dir: ''coverage/''
},
// web server port
port: 9876,
// enable / disable colors in the output (reporters and logs)
colors: true,
// level of logging
// possible values: config.LOG_DISABLE || config.LOG_ERROR || config.LOG_WARN || config.LOG_INFO || config.LOG_DEBUG
logLevel: config.LOG_INFO,
// enable / disable watching file and executing tests whenever any file changes
autoWatch: true,
// start these browsers
// available browser launchers: https://npmjs.org/browse/keyword/karma-launcher
// browsers: [''PhantomJS'', ''Chrome''],
browsers: [''Chrome''],
// Continuous Integration mode
// if true, Karma captures browsers, runs the tests and exits
singleRun: false,
// Concurrency level
// how many browser should be started simultanous
concurrency: Infinity
})
}

Mi prueba array.js

// var expect = require(''chai'').expect;
describe("Mocha: The ''toBe'' matcher compares with ===", function() {
it("and has a positive case", function() {
expect(true).to.be(true);
});
it("and can have a negative case", function() {
expect(false).not.to.be(true);
});
});

Por favor, sugiera lo que me falta.

Answer 1

expect(true).to.be.equal(true) escribir expect(true).to.be.equal(true) the be es una cadena (objeto) no una función. O podrías escribir:

expect(true).to.be.true;
expect(false).to.be.false;