a) Sie können dem Karma-Startbefehl ein Muster übergeben, das Ihre einzelne Datei als Befehlszeilenargument beschreibt:
# build and run all tests
$ karma start
# build and run only those tests that are in this dir
$ karma start --grep app/modules/sidebar/tests
# build and run only this test file
$ karma start --grep app/modules/sidebar/tests/animation_test.js
Quelle: https://gist.github.com/KidkArolis/fd5c0da60a5b748d54b2
b) Sie können eine Gulp- (oder Grunz-) Aufgabe verwenden, die Karma für Sie startet. Dies gibt Ihnen mehr Flexibilität bei der Ausführung von Karma. Sie können beispielsweise benutzerdefinierte Befehlszeilenargumente an diese Aufgaben übergeben. Diese Strategie ist auch nützlich, wenn Sie einen Überwachungsmodus implementieren möchten, der nur die geänderten Tests ausführt. (Der Karma-Überwachungsmodus führt alle Tests aus.) Ein weiterer Anwendungsfall besteht darin, nur Tests für Dateien mit lokalen Änderungen auszuführen, bevor Sie ein Commit durchführen. Siehe auch Gulp-Beispiele unten.
c) Wenn Sie VisualStudio verwenden, möchten Sie möglicherweise einen externen Tool-Befehl zum Kontextmenü des Solution Explorers hinzufügen. Auf diese Weise können Sie den Test über dieses Kontextmenü starten, anstatt die Konsole zu verwenden. Siehe auch
Wie führe ich benutzerdefinierte dateispezifische Befehle / Aufgaben in Visual Studio aus?
Beispiel Gulp-Datei
//This gulp file is used to execute the Karma test runner
//Several tasks are available, providing different work flows
//for using Karma.
var gulp = require('gulp');
var karma = require('karma');
var KarmaServerConstructor = karma.Server;
var karmaStopper = karma.stopper;
var watch = require('gulp-watch');
var commandLineArguments = require('yargs').argv;
var svn = require('gulp-svn');
var exec = require('child_process').exec;
var fs = require('fs');
//Executes all tests, based on the specifications in karma.conf.js
//Example usage: gulp all
gulp.task('all', function (done) {
var karmaOptions = { configFile: __dirname + '/karma.conf.js' };
var karmaServer = new KarmaServerConstructor(karmaOptions, done);
karmaServer.on('browsers_change', stopServerIfAllBrowsersAreClosed); //for a full list of events see http://karma-runner.github.io/1.0/dev/public-api.html
karmaServer.start();
});
//Executes only one test which has to be passed as command line argument --filePath
//The option --browser also has to be passed as command line argument.
//Example usage: gulp single --browser="Chrome_With_Saved_DevTools_Settings" --filePath="C:\myTest.spec.js"
gulp.task('single', function (done) {
var filePath = commandLineArguments.filePath.replace(/\\/g, "/");
var karmaOptions = {
configFile: __dirname + '/karma.conf.js',
action: 'start',
browsers: [commandLineArguments.browser],
files: [
'./Leen.Managementsystem/bower_components/jquery/dist/jquery.js',
'./Leen.Managementsystem/bower_components/globalize/lib/globalize.js',
{ pattern: './Leen.Managementsystem/bower_components/**/*.js', included: false },
{ pattern: './Leen.Managementsystem.Tests/App/test/mockFactory.js', included: false },
{ pattern: './Leen.Managementsystem/App/**/*.js', included: false },
{ pattern: './Leen.Managementsystem.Tests/App/test/*.js', included: false },
{ pattern: filePath, included: false },
'./Leen.Managementsystem.Tests/App/test-main.js',
'./switchKarmaToDebugTab.js' //also see /programming/33023535/open-karma-debug-html-page-on-startup
]
};
var karmaServer = new KarmaServerConstructor(karmaOptions, done);
karmaServer.on('browsers_change', stopServerIfAllBrowsersAreClosed);
karmaServer.start();
});
//Starts a watch mode for all *.spec.js files. Executes a test whenever it is saved with changes.
//The original Karma watch mode would execute all tests. This watch mode only executes the changed test.
//Example usage: gulp watch
gulp.task('watch', function () {
return gulp //
.watch('Leen.Managementsystem.Tests/App/**/*.spec.js', handleFileChanged)
.on('error', handleGulpError);
function handleFileChange(vinyl) {
var pathForChangedFile = "./" + vinyl.replace(/\\/g, "/");
var karmaOptions = {
configFile: __dirname + '/karma.conf.js',
action: 'start',
browsers: ['PhantomJS'],
singleRun: true,
files: [
'./Leen.Managementsystem/bower_components/jquery/dist/jquery.js',
'./Leen.Managementsystem/bower_components/globalize/lib/globalize.js',
{ pattern: './Leen.Managementsystem/bower_components/**/*.js', included: false },
{ pattern: './Leen.Managementsystem.Tests/App/test/mockFactory.js', included: false },
{ pattern: './Leen.Managementsystem/App/**/*.js', included: false },
{ pattern: './Leen.Managementsystem.Tests/App/test/*.js', included: false },
{ pattern: pathForChangedFile, included: false },
'./Leen.Managementsystem.Tests/App/test-main.js'
]
};
var karmaServer = new KarmaServerConstructor(karmaOptions);
karmaServer.start();
}
});
//Executes only tests for files that have local changes
//The option --browser has to be passed as command line arguments.
//Example usage: gulp localChanges --browser="Chrome_With_Saved_DevTools_Settings"
gulp.task('localChanges', function (done) {
exec('svn status -u --quiet --xml', handleSvnStatusOutput);
function handleSvnStatusOutput(error, stdout, stderr) {
if (error) {
throw error;
}
var changedJsFiles = getJavaScriptFiles(stdout);
var specFiles = getSpecFiles(changedJsFiles);
if(specFiles.length>0){
console.log('--- Following tests need to be executed for changed files: ---');
specFiles.forEach(function (file) {
console.log(file);
});
console.log('--------------------------------------------------------------');
} else{
console.log('Finsihed: No modified files need to be tested.');
return;
}
var files = [
'./Leen.Managementsystem/bower_components/jquery/dist/jquery.js',
'./Leen.Managementsystem/bower_components/globalize/lib/globalize.js',
{ pattern: './Leen.Managementsystem/bower_components/**/*.js', included: false },
{ pattern: './Leen.Managementsystem.Tests/App/test/mockFactory.js', included: false },
{ pattern: './Leen.Managementsystem/App/**/*.js', included: false },
{ pattern: './Leen.Managementsystem.Tests/App/test/*.js', included: false }];
specFiles.forEach(function (file) {
var pathForChangedFile = "./" + file.replace(/\\/g, "/");
files = files.concat([{ pattern: pathForChangedFile, included: false }]);
});
files = files.concat([ //
'./Leen.Managementsystem.Tests/App/test-main.js', //
'./switchKarmaToDebugTab.js'
]);
var karmaOptions = {
configFile: __dirname + '/karma.conf.js',
action: 'start',
singleRun: false,
browsers: [commandLineArguments.browser],
files: files
};
var karmaServer = new KarmaServerConstructor(karmaOptions, done);
karmaServer.on('browsers_change', stopServerIfAllBrowsersAreClosed);
karmaServer.start();
}
});
function getJavaScriptFiles(stdout) {
var jsFiles = [];
var lines = stdout.toString().split('\n');
lines.forEach(function (line) {
if (line.includes('js">')) {
var filePath = line.substring(9, line.length - 3);
jsFiles.push(filePath);
}
});
return jsFiles;
}
function getSpecFiles(jsFiles) {
var specFiles = [];
jsFiles.forEach(function (file) {
if (file.endsWith('.spec.js')) {
specFiles.push(file);
} else {
if (file.startsWith('Leen\.Managementsystem')) {
var specFile = file.replace('Leen\.Managementsystem\\', 'Leen.Managementsystem.Tests\\').replace('\.js', '.spec.js');
if (fs.existsSync(specFile)) {
specFiles.push(specFile);
} else {
console.error('Missing test: ' + specFile);
}
}
}
});
return specFiles;
}
function stopServerIfAllBrowsersAreClosed(browsers) {
if (browsers.length === 0) {
karmaStopper.stop();
}
}
function handleGulpError(error) {
throw error;
}
Beispieleinstellungen für ExternalToolCommand in VisualStudio:
Titel: Führen Sie Karma mit Chrome aus
Befehl: cmd.exe
Argumente: / c gulp single --browser = "Chrome_With_Saved_DevTools_Settings" --filePath = $ (ItemPath)
Anfangsverzeichnis: $ (SolutionDir)
Ausgabefenster verwenden: true
