Angular 2 unit test compilation failed jasmine/karma - unit-testing

Question

could somebody provide their thoughts about the error on compilation unit test for angular2 project?
14 04 2017 22:32:56.591:WARN [karma]: No captured browser, open http://localhost:9876/
14 04 2017 22:32:56.627:INFO [karma]: Karma v1.6.0 server started at http://0.0.0.0:9876/
14 04 2017 22:32:56.628:INFO [launcher]: Launching browser Chrome with unlimited concurrency
14 04 2017 22:32:56.678:INFO [launcher]: Starting browser Chrome
14 04 2017 22:33:00.850:INFO [Chrome 57.0.2987 (Windows 10 0.0.0)]: Connected on socket g9NBqcx7uGTZdJXBAAAA with id 58214193
14 04 2017 22:33:01.748:WARN [web-server]: 404: /base/systemjs.config.extras.js
14 04 2017 22:33:03.178:WARN [web-server]: 404: /base/node_modules/rxjs/RX.js
Chrome 57.0.2987 (Windows 10 0.0.0) ERROR
{
"originalErr": {}
}
My configuration are:
karma-test-shim.js
// #docregion
// /*global jasmine, __karma__, window*/
Error.stackTraceLimit = 0; // "No stacktrace"" is usually best for app testing.
// Uncomment to get full stacktrace output. Sometimes helpful, usually not.
//Error.stackTraceLimit = Infinity;
jasmine.DEFAULT_TIMEOUT_INTERVAL = 1000;
var builtPath = '/base/';
__karma__.loaded = function () { };
function isJsFile(path) {
return path.slice(-3) == '.js';
}
function isSpecFile(path) {
return /\.spec\.(.*\.)?js$/.test(path);
}
function isBuiltFile(path) {
return isJsFile(path) && (path.substr(0, builtPath.length) == builtPath);
}
var allSpecFiles = Object.keys(window.__karma__.files)
.filter(isSpecFile)
.filter(isBuiltFile);
System.config({
baseURL: 'base',
// Extend usual application package list with test folder
packages: { 'testing': { main: 'index.js', defaultExtension: 'js' } },
// Assume npm: is set in `paths` in systemjs.config
// Map the angular testing umd bundles
map: {
'#angular/core/testing': 'npm:#angular/core/bundles/core-testing.umd.js',
'#angular/common/testing': 'npm:#angular/common/bundles/common-testing.umd.js',
'#angular/compiler/testing': 'npm:#angular/compiler/bundles/compiler-testing.umd.js',
'#angular/platform-browser/testing': 'npm:#angular/platform-browser/bundles/platform-browser-testing.umd.js',
'#angular/platform-browser-dynamic/testing': 'npm:#angular/platform-browser-dynamic/bundles/platform-browser-dynamic-testing.umd.js',
'#angular/http/testing': 'npm:#angular/http/bundles/http-testing.umd.js',
'#angular/router/testing': 'npm:#angular/router/bundles/router-testing.umd.js',
'#angular/forms/testing': 'npm:#angular/forms/bundles/forms-testing.umd.js',
},
});
System.import('systemjs.config.js')
.then(importSystemJsExtras)
.then(initTestBed)
.then(initTesting);
/** Optional SystemJS configuration extras. Keep going w/o it */
function importSystemJsExtras(){
return System.import('systemjs.config.extras.js')
.catch(function(reason) {
console.log(
'Warning: System.import could not load the optional "systemjs.config.extras.js". Did you omit it by accident? Continuing without it.'
);
console.log(reason);
});
}
function initTestBed(){
return Promise.all([
System.import('#angular/core/testing'),
System.import('#angular/platform-browser-dynamic/testing')
])
.then(function (providers) {
var coreTesting = providers[0];
var browserTesting = providers[1];
coreTesting.TestBed.initTestEnvironment(
browserTesting.BrowserDynamicTestingModule,
browserTesting.platformBrowserDynamicTesting());
})
}
// Import all spec files and start karma
function initTesting () {
return Promise.all(
allSpecFiles.map(function (moduleName) {
return System.import(moduleName);
})
)
.then(__karma__.start, __karma__.error);
}
karma.conf.js
// Karma configuration
module.exports = function(config) {
var appBase = 'app/'; // transpiled app JS and map files
var appSrcBase = 'app/'; // app source TS files
var appAssets = '/base/app/'; // component assets fetched by Angular's compiler. all assets served up at http://localhost/base/
config.set({
basePath: '',
frameworks: ['jasmine'],
plugins: [
require('karma-jasmine'),
require('karma-chrome-launcher'),
],
files: [
'node_modules/systemjs/dist/system.src.js',
// Polyfills
'node_modules/core-js/client/shim.js',
'node_modules/reflect-metadata/Reflect.js',
// zone.js
'node_modules/zone.js/dist/zone.js',
'node_modules/zone.js/dist/long-stack-trace-zone.js',
'node_modules/zone.js/dist/proxy.js',
'node_modules/zone.js/dist/sync-test.js',
'node_modules/zone.js/dist/jasmine-patch.js',
'node_modules/zone.js/dist/async-test.js',
'node_modules/zone.js/dist/fake-async-test.js',
// RxJs
{ pattern: 'node_modules/rxjs/**/*.js', included: false, watched: false },
{ pattern: 'node_modules/rxjs/**/*.js.map', included: false, watched: false },
// Paths loaded via module imports:
// Angular itself
{ pattern: 'node_modules/#angular/**/*.js', included: false, watched: false },
{ pattern: 'node_modules/#angular/**/*.js.map', included: false, watched: false },
{ pattern: 'systemjs.config.js', included: false, watched: false },
'karma-test-shim.js',
// transpiled application & spec code paths loaded via module imports
{ pattern: appBase + '**/*.js', included: false, watched: true },
// Asset (HTML & CSS) paths loaded via Angular's component compiler
// (these paths need to be rewritten, see proxies section)
{ pattern: appBase + '**/*.html', included: false, watched: true },
{ pattern: appBase + '**/*.css', included: false, watched: true },
// Paths for debugging with source maps in dev tools
{ pattern: appSrcBase + '**/*.ts', included: false, watched: false },
{ pattern: appBase + '**/*.js.map', included: false, watched: false },
],
proxies: {
// required for component assets fetched by Angular's compiler
"/app/": appAssets
},
exclude: [
],
preprocessors: {
},
reporters: ['progress'],
port: 9876,
colors: true,
logLevel: config.LOG_INFO,
autoWatch: true,
browsers: ['Chrome'],
singleRun: false,
concurrency: Infinity
})
}
systemjs.config.js
(function (global) {
System.config({
paths: {
// paths serve as alias
'npm:': 'node_modules/'
},
// map tells the System loader where to look for things
map: {
// our app is within the app folder
app: 'app',
// angular bundles
'#angular/core': 'npm:#angular/core/bundles/core.umd.js',
'#angular/common': 'npm:#angular/common/bundles/common.umd.js',
'#angular/compiler': 'npm:#angular/compiler/bundles/compiler.umd.js',
'#angular/platform-browser': 'npm:#angular/platform-browser/bundles/platform-browser.umd.js',
'#angular/platform-browser-dynamic': 'npm:#angular/platform-browser-dynamic/bundles/platform-browser-dynamic.umd.js',
'#angular/http': 'npm:#angular/http/bundles/http.umd.js',
'#angular/router': 'npm:#angular/router/bundles/router.umd.js',
'#angular/forms': 'npm:#angular/forms/bundles/forms.umd.js',
// other libraries
'rxjs': 'npm:rxjs'
},
// packages tells the System loader how to load when no filename and/or no extension
packages: {
app: {
main: './main.js',
defaultExtension: 'js'
},
rxjs: {
defaultExtension: 'js'
}
}
});
})(this);
If I tried to write a test for the component, I gather error above. Thank you.

Answer 1

Try adding the below property in the proxies Object so that you can alias the nodeModules folder with base added before it.
proxies: {
// required for component assets fetched by Angular's compiler
"/app/": appAssets,
"/node_modules":'/base/node_modules/'
},