angular - Angular2 / Jasmine: Testing Service with another Service as a dependency -


setup: app_initializer service configurationservice, loads config data, being used across app components , services. when unit testing components, reads config file , evaluates correctly. when unit testing services, use configuration, fails.

it set follows:

app.module.ts

export function configurationfactory( config: configurationservice ): {   // line triggers loading of config file     return () => config.load();  }  @ngmodule({   bootrstrap: {},   ...,   providers : [     configurationservice,     {       deps: [ configurationservice ],       multi: true,       provide: app_initializer,       usefactory: configurationfactory,        }   ] })

configurationservice.ts

@injectable() export class configurationservice {    // error holder   public error: boolean = false;   // data holder   public data: = {};   // config file url   private configurl: string = './assets/config/config.json';    constructor( private http: http ) {   }   /**    * reads config file    */   public load(): promise<any> {     return this.http.get( this.configurl )       .map( ( response: ) => response.json() )       .topromise()       .then( ( data: ) => this.data = data )       .catch( ( err: ) => promise.resolve() );   }  }

here testableservice.service.ts uses config service, too

@injectable() export class testableservice extends someabstracthttpservice {   constructor( http: http,                private config: configurationservice ) {     super( http );   }    public setrequest( sessionid: string, isident: boolean ): void {     if ( isident ) {       this.resourceurl = `${ this.config.data.contextrootrest}/documents/ident/${sessionid}`;     } else {       this.resourceurl = `${ this.config.data.contextrootrest}/documents/noident/${sessionid}`;     }     this.headers = new headers();     this.headers.append( 'content-type', 'application/json' );     this.headers.append( 'accept', 'application/json, application/pdf' );     this.requestoptions = new requestoptions( {       headers: this.headers,       responsetype: responsecontenttype.blob     } );   } }

now spec file, testableservice.service.spec.ts

export function configurationfactory( config: configurationservice ): {   return () => config.load(); }  describe( 'testableservice', () => {    // not ideal hardcode here, prefer using same config file, used across app!   let mockconfig: = {contextrootrest: 'rest/'};   let theservice: testableservice;     beforeeach( async(() => {     testbed.configuretestingmodule( {       imports: [         httpmodule,       ],       providers: [         testableservice,         mockdataservice,         { provide: xhrbackend, useclass: mockbackend },         configurationservice,         {           // provider app_initializer           deps: [ configurationservice ],           multi: true,           provide: app_initializer,           usefactory: configurationfactory,         },       ]     } );   } ) );    // suspect, using app_initializer @ stage goofy,    // not in fact instantiate app, service.    // correct way here?    beforeeach( inject( [ testableservice, xhrbackend ], ( service: testableservice, backend: mockbackend ) => {     theservice = service;     mockbackend = backend;   } ) );      it( 'should set request correctly', ( ) => {     theservice.setrequest( '1234567890', true );     expect( theservice.resourceurl )         .toequal( `${ mockconfig.contextrootrest }/documents/ident/1234567890` );   }); });

and fails expected 'undefined/documents/ident/1234567890' equal 'rest/documents/ident/1234567890' - means, config service has not been loaded @ testableservice @ all. ideas?

the code above bad. figured out way couple of hours later , here cleaner , better solution.

so, config file in our assets directory, can import directly spec file. have used mocked provider configurationservice , that's it. here spec.ts file

import { configurationservice } '../../common/config/configuration.service'; import * config '../../../assets/config/config.json';  const mockconfig: = config;  export class configurationfactory {   // no methods in original configurationservice, object var   public data: = mockconfig; }  describe( 'testableservice', () => {    let theservice: testableservice;    beforeeach( () => {     testbed.configuretestingmodule( {       providers: [         testableservice, ...         { provide: configurationservice, useclass: configurationfactory },       ]     } );   } );    beforeeach( inject( [ testableservice ],       ( service: testableservice ) => {         theservice = service;   } ) );    it( 'should set request correctly', ( ) => {     theservice.setrequest( '1234567890', true );     expect( theservice.resourceurl )         .toequal( `${ mockconfig.contextrootrest }/documents/ident/1234567890` );   }); }

another example of things being solved in ways complicated simpler solution on surface... :/


Comments

Post a Comment

Popular posts from this blog

angular - Ionic slides - dynamically add slides before and after -

hi i'm using ngfor create set of 3 slides while starting in middle i'm guaranteed able slide left or right on start. when slide right can simple listen reachedend , push slide array i'm looping. but have problem adding slide beginning. if same above , use e.g. array.unshift() or spread add item beginning, view think it's on position 0 , snaps view new slide. the code below work animates slide change index 1. slide = [0,1,2] //example loop slidechanged(event) { if(this.slides.isbeginning()){ this.slide = [this.slide[0]-1, ...this.slide]; this.slides.update(); this.slides.slideto(1) } } <ion-slides [initialslide]="1" (ionslidedidchange)="slidechanged($event)"> <ion-slide *ngfor="let item of slide"> <h1>slide {{item}}</h1> </ion-slide> </ion-slides> any appreciated! you can using ionslidenextend , ionslideprevend events slides . please...
Read more

Add a dynamic header in angular 2 http provider -

i have http interceptor built via tutorial https://scotch.io/@kashyapmukkamala/using-http-interceptor-with-angular2 the problem need have dynamic header changes automatically once changes 'mode' in app. service able tell interceptor change header, or have interceptor pull header (which string)from service each request. able throwing away patch method, call http.patch('new header string') set header string. call in service controls 'mode' setting. wondering if there way interceptor pull recent value service each request or if can add method http provider via interceptor? i've tried call service in interceptor each request returns undefined. because creating new instance of service or copying value before service fired , loaded/changed data. i don't want pass header string every http provider call because defeats purpose of having interceptor, id able set once changes or have provider fetch service before makes request. tl;dr : need add autom...
Read more

minify - Minimizing css files -

i want know how css files can minimized. currently, using external sites css minifier compress css files. however, after removing whitespaces, comments, etc, file sizes reduced 10-15%. how frameworks bootstrap manage make minimized versions kilobytes. as example, css is: body { background-color: #ff0; } the reduction goes 28 bytes 22 bytes other css files have lot more characters still smaller this. actually minifying code means it's remove thing code white space characters new line characters comments block delimiters it reduces amount of code has transferred on web , speed site load fastly.but unreadable format.
Read more