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I installed the following for testing:
"devDependencies": {
"jasmine-core": "^2.4.1",
"karma": "^0.13.22",
"karma-jasmine": "^0.3.7",
"karma-phantomjs-launcher": "^1.0.0"
}
After running karma start I get the following error:
Doing a search this is the first question with the same problem: karma start Cannot find module 'jasmine-core'
However I've tried both answers, installed jasmine-core globally and I already did npm install jasmine-core --save-dev :(
My test/index.html
<!DOCTYPE html>
<html lang="en">
<head>
<title>Jasmine Spec Runner</title>
<link href="testing.css" rel="stylesheet">
<script src="../app/assets/js/libs/vendors.min.js"></script>
<script src="../app/assets/js/bundle.js"></script>
</head>
<body>
<div>
<header>
<h1>Jasmine tests for Dashboard</h1>
</header>
</div>
</body>
</html>
My karma.conf.js
// Karma configuration
// Generated on Mon Mar 14 2016 11:56:04 GMT-0500 (CDT)
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: ['jasmine'],
// list of files / patterns to load in the browser
files: [
'app/assets/js/bundle.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'],
// 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: false,
// start these browsers
// available browser launchers: https://npmjs.org/browse/keyword/karma-launcher
browsers: ['PhantomJS'],
// Continuous Integration mode
// if true, Karma captures browsers, runs the tests and exits
singleRun: true,
// Concurrency level
// how many browser should be started simultaneous
concurrency: Infinity
})
}
714
When declaring karma in package.json, then it's installed as a local dependency within the node_modules directory of your project. But running karma start from the console executes your globally installed karma. So there are two versions of Karma (local & global) and both have a dependency to jasmine-core, which needs to get installed.
When getting Cannot find module 'jasmine-core' on karma start, then the globally installed Karma misses "jasmine-core". So make sure you have this also installed globally. Best is to run the following commands:
npm install -g karma
npm install -g jasmine-core
npm install -g karma-jasmine
Afterwards you should be able to run karma start on a directory which has a karma.conf.js file.
You can also use a locally installed Karma. All you need to do is to install it this way:
npm install --save-dev karma
npm install --save-dev jasmine-core
npm install --save-dev karma-jasmine
If you have done that, then make sure that you also execute it from it's path in node_modules:
./node_modules/karma/bin/karma start
Just a guess, but try cleaning the npm cache, removing the node_modules and reinstalling everything from scratch:
$ rm -rf node_modules
$ npm cache clean
$ npm i
$ sudo npm uninstall -g jasmine-core
$ sudo npm cache clean -f
$ sudo npm i -g jasmine-core
If you start karma on the command line within a local directory, you should install karma-cli globally instead of karma.
Reference
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