How to use impure method in ng-mocks

Best JavaScript code snippet using ng-mocks

index.mjs

Source:index.mjs

1const {2  URL,3  Reflect: { getOwnPropertyDescriptor, getPrototypeOf, apply, ownKeys },4  Error: { prototype: error_prototype },5  Infinity,6  Symbol,7  Symbol: { keyFor, for: symbolFor },8  WeakMap,9  Map,10  Set,11  String,12  undefined,13  Math: { min },14  Object: {15    prototype: object_prototype,16    prototype: { toString },17    fromEntries,18  },19  Array: { isArray },20  JSON: { stringify: stringifyJSON },21} = globalThis;22const { search: __search } = new URL(import.meta.url);23const { identity, hasOwnProperty, incrementCounter, createCounter } =24  await import(`../../util/index.mjs${__search}`);25const { logDebug, logGuardDebug } = await import(26  `../../log/index.mjs${__search}`27);28const noargs = [];29const empty = symbolFor("APPMAP_EMPTY_MARKER");30const isSymbol = (any) => typeof any === "symbol";31const isString = (any) => typeof any === "string";32const wellknown = new Set(33  ownKeys(Symbol)34    .map((key) => Symbol[key])35    .filter(isSymbol),36);37////////////////////38// Reflect Helper //39////////////////////40const getOwnKeyArrayImpure = (object) => {41  try {42    return ownKeys(object);43  } catch (error) {44    logDebug(45      "Reflect.ownKeys(%o) threw %O (this should only happen when the object is a proxy)",46      object,47      error,48    );49    return [];50  }51};52const getPrototypeImpure = (object) => {53  try {54    return getPrototypeOf(object);55  } catch (error) {56    logDebug(57      "Reflect.getPrototypeOf(%o) threw %O (this should only happen when the object is a proxy)",58      object,59      error,60    );61    return null;62  }63};64const getOwnPropertyDescriptorImpure = (object, key) => {65  try {66    return getOwnPropertyDescriptor(object, key);67  } catch (error) {68    logDebug(69      "Reflect.getOwnPropertyDescriptor(%o, %j) threw %O (this should only happen when the object is a proxy)",70      object,71      key,72      error,73    );74    return undefined;75  }76};77const hasPrototypeImpure = (object, prototype) => {78  while (object !== null) {79    if (object === prototype) {80      return true;81    }82    object = getPrototypeImpure(object);83  }84  return false;85};86const getDataPropertyImpure = (object, key) => {87  while (object !== null) {88    const descriptor = getOwnPropertyDescriptorImpure(object, key);89    if (descriptor !== undefined && hasOwnProperty(descriptor, "value")) {90      return descriptor.value;91    }92    object = getPrototypeImpure(object);93  }94  return undefined;95};96const getTypeTagPure = (any) => apply(toString, any, noargs);97const getTagPure = (any) => {98  const type_tag = getTypeTagPure(any);99  return type_tag.substring(type_tag.indexOf(" ") + 1, type_tag.length - 1);100};101const toStringImpure = (object) => {102  try {103    return object.toString();104  } catch (error) {105    logDebug("%o.toString() failure >> %O", object, error);106    return undefined;107  }108};109///////////110// Index //111///////////112const generateGetIndex =113  (name) =>114  ({ [name]: map, counter }, value) => {115    const index = map.get(value);116    if (index !== undefined) {117      return index;118    } else {119      const new_index = incrementCounter(counter);120      map.set(value, new_index);121      return new_index;122    }123  };124const getSymbolIndex = generateGetIndex("symbols");125const getReferenceIndex = generateGetIndex("references");126////////////////////////127// getConstructorName //128////////////////////////129const getConstructorName = ({ impure_constructor_naming }, object) => {130  if (impure_constructor_naming) {131    const _constructor = getDataPropertyImpure(object, "constructor");132    if (typeof _constructor === "function") {133      const name = getDataPropertyImpure(_constructor, "name");134      logGuardDebug(135        typeof name !== "string",136        "Constructor name of %o is not a string: %o",137        object,138        name,139      );140      return typeof name === "string" ? name : getTagPure(object);141    } else {142      return getTagPure(object);143    }144  } else {145    return getTagPure(object);146  }147};148///////////////149// stringify //150///////////////151const generatePrint =152  (printString) =>153  ({ impure_printing }, any) => {154    if (155      any === null ||156      any === undefined ||157      typeof any === "boolean" ||158      typeof any === "number"159    ) {160      return String(any);161    } else if (typeof any === "string") {162      return printString(any);163    } else if (typeof any === "bigint") {164      return `${String(any)}n`;165    } else if (typeof any === "symbol") {166      if (wellknown.has(any)) {167        return `well-known ${String(any)}`;168      } else if (keyFor(any) !== undefined) {169        return `global ${String(any)}`;170      } else {171        return String(any);172      }173    } else if (typeof any === "function") {174      if (impure_printing) {175        const name = getDataPropertyImpure(any, "name");176        if (getOwnPropertyDescriptorImpure(any, "prototype") !== undefined) {177          if (typeof name === "string" && name !== "") {178            return `function ${name} (...) { ... }`;179          } else {180            return `function (...) { ... }`;181          }182        } else {183          if (typeof name === "string" && name !== "") {184            return `${name} = (...) => { ... }`;185          } else {186            return `(...) => { ... }`;187          }188        }189      } else {190        return getTypeTagPure(any);191      }192    } else {193      if (impure_printing) {194        const representation = toStringImpure(any);195        logGuardDebug(196          typeof representation !== "string",197          "%o.toString() did not return a string, got: %o",198          any,199          representation,200        );201        return typeof representation === "string"202          ? representation203          : getTypeTagPure(any);204      } else {205        return getTypeTagPure(any);206      }207    }208  };209const print = generatePrint(stringifyJSON);210const show = generatePrint(identity);211//////////////////212// getSpecific  //213//////////////////214const getSpecific = (serialization, object) => {215  if (216    serialization.impure_error_inspection &&217    hasPrototypeImpure(object, error_prototype)218  ) {219    return {220      type: "error",221      name: show(serialization, getDataPropertyImpure(object, "name")),222      message: show(serialization, getDataPropertyImpure(object, "message")),223      stack: show(serialization, getDataPropertyImpure(object, "stack")),224    };225  } else if (serialization.impure_array_inspection && isArray(object)) {226    // Proxies cannot change array's length so we know it will be a number.227    return { type: "array", length: getDataPropertyImpure(object, "length") };228  } else if (229    serialization.impure_hash_inspection &&230    (getPrototypeImpure(object) === null ||231      getPrototypeImpure(object) === object_prototype)232  ) {233    const keys = getOwnKeyArrayImpure(object).filter(isString);234    const entries = [];235    const length = min(keys.length, serialization.maximum_properties_length);236    for (let index = 0; index < length; index += 1) {237      const key = keys[index];238      entries.push([239        key,240        getConstructorName(serialization, getDataPropertyImpure(object, key)),241      ]);242    }243    return {244      type: "hash",245      length,246      properties: fromEntries(entries),247    };248  } else {249    return null;250  }251};252const serializeNonEmpty = (serialization, value) => {253  const type = value === null ? "null" : typeof value;254  const representation = print(serialization, value);255  if (256    type === "null" ||257    type === "undefined" ||258    type === "boolean" ||259    type === "number" ||260    type === "string" ||261    type === "bigint"262  ) {263    return { type, print: representation };264  } else if (type === "symbol") {265    return {266      type,267      print: representation,268      index: getSymbolIndex(serialization, value),269    };270  } else {271    return {272      type,273      print: representation,274      index: getReferenceIndex(serialization, value),275      constructor: getConstructorName(serialization, value),276      specific: getSpecific(serialization, value),277    };278  }279};280export const createSerialization = ({281  serialization: {282    "maximum-print-length": maximum_print_length,283    "maximum-properties-length": maximum_properties_length,284    "impure-printing": impure_printing,285    "impure-constructor-naming": impure_constructor_naming,286    "impure-array-inspection": impure_array_inspection,287    "impure-error-inspection": impure_error_inspection,288    "impure-hash-inspection": impure_hash_inspection,289  },290}) => ({291  counter: createCounter(0),292  empty,293  symbols: new Map(),294  references: new WeakMap(),295  maximum_print_length:296    maximum_print_length === null ? Infinity : maximum_print_length,297  maximum_properties_length,298  impure_printing,299  impure_constructor_naming,300  impure_array_inspection,301  impure_error_inspection,302  impure_hash_inspection,303});304export const getSerializationEmptyValue = ({ empty }) => empty;305export const serialize = (serialization, value) => {306  if (value === serialization.empty) {307    return null;308  } else {309    const serial = serializeNonEmpty(serialization, value);310    if (serial.print.length > serialization.maximum_print_length) {311      return {312        ...serial,313        print: `${serial.print.substring(314          0,315          serialization.maximum_print_length - 4,316        )} ...`,317      };318    } else {319      return serial;320    }321  }...

flying-heroes.component.ts

Source:flying-heroes.component.ts

1// #docplaster2// #docregion3import { Component }              from '@angular/core';4import { HEROES }                 from './heroes';5@Component({6  selector: 'app-flying-heroes',7  templateUrl: './flying-heroes.component.html',8  styles: ['#flyers, #all {font-style: italic}']9})10// #docregion v111export class FlyingHeroesComponent {12  heroes: any[] = [];13  canFly = true;14// #enddocregion v115  mutate = true;16  title = 'Flying Heroes (pure pipe)';17// #docregion v118  constructor() { this.reset(); }19  addHero(name: string) {20    name = name.trim();21    if (!name) { return; }22    let hero = {name, canFly: this.canFly};23// #enddocregion v124    if (this.mutate) {25    // Pure pipe won't update display because heroes array reference is unchanged26    // Impure pipe will display27// #docregion v128// #docregion push29    this.heroes.push(hero);30// #enddocregion push31// #enddocregion v132    } else {33      // Pipe updates display because heroes array is a new object34// #docregion concat35      this.heroes = this.heroes.concat(hero);36// #enddocregion concat37    }38// #docregion v139  }40  reset() { this.heroes = HEROES.slice(); }41}42// #enddocregion v143////// Identical except for impure pipe //////44// #docregion impure-component45@Component({46  selector: 'app-flying-heroes-impure',47  templateUrl: './flying-heroes-impure.component.html',48// #enddocregion impure-component49  styles: ['.flyers, .all {font-style: italic}'],50// #docregion impure-component51})52export class FlyingHeroesImpureComponent extends FlyingHeroesComponent {53  title = 'Flying Heroes (impure pipe)';54}...

index.js

Source:index.js

1import { addItem } from './actions';2import { arrayReducerImpure, arrayReducerPure } from './reducer';3// Pure vs impure reducer4//   outputs5//   detecting changes6const pureVsImpure = () => {7  let statePure;8  statePure = arrayReducerPure(statePure, {});9  statePure = arrayReducerPure(statePure, addItem(1));10  statePure = arrayReducerPure(statePure, addItem(2));11  statePure = arrayReducerPure(statePure, addItem(3));12  console.log('pure reducer', statePure); // => [1, 2, 3]13  let stateImpure;14  stateImpure = arrayReducerImpure(stateImpure, {});15  stateImpure = arrayReducerImpure(stateImpure, addItem(1));16  stateImpure = arrayReducerImpure(stateImpure, addItem(2));17  stateImpure = arrayReducerImpure(stateImpure, addItem(3));18  console.log('impure reducer', stateImpure); // => [1, 2, 3]19  // Both returned the same, so what is the deal?20};21// pureVsImpure();22const pureVsImpureDifference = () => {23  let stateImpure;24  let prevStateImpure;25  stateImpure = arrayReducerImpure(prevStateImpure, {});26  prevStateImpure = stateImpure;27  stateImpure = arrayReducerImpure(prevStateImpure, addItem(1));28  console.log('impure reducer, state changed?', stateImpure !== prevStateImpure);29  let statePure;30  let prevStatePure;31  statePure = arrayReducerPure(prevStatePure, {});32  prevStatePure = statePure;33  statePure = arrayReducerPure(prevStatePure, addItem(1));34  console.log('pure reducer, state changed?', statePure !== prevStatePure);35};...

Using AI Code Generation

1import { MockBuilder, MockRender, ngMocks } from 'ng-mocks';2import { MockBuilder, MockRender } from 'ng-mocks';3import { ngMocks } from 'ng-mocks/dist/lib/mock-helper';4import { MockBuilder, MockRender, ngMocks } from 'ng-mocks';5import { MockBuilder, MockRender } from 'ng-mocks';6import { ngMocks } from 'ng-mocks/dist/lib/mock-helper';7import { MockBuilder, MockRender, ngMocks } from 'ng-mocks';8import { MockBuilder, MockRender } from 'ng-mocks';9import { ngMocks } from 'ng-mocks/dist/lib/mock-helper';10import { MockBuilder, MockRender, ngMocks } from 'ng-mocks';11import { MockBuilder, MockRender } from 'ng-mocks';12import { ngMocks } from 'ng-mocks/dist/lib/mock-helper';13import { MockBuilder, MockRender, ngMocks } from 'ng-mocks';14import { MockBuilder, MockRender } from 'ng-mocks';15import { ngMocks } from 'ng-mocks/dist/lib/mock-helper';16import { MockBuilder, MockRender, ngMocks } from 'ng-mocks';17import { MockBuilder, MockRender } from 'ng-mocks';18import { ngMocks } from 'ng-mocks/dist/lib/mock-helper';19import { MockBuilder, MockRender, ngMocks } from 'ng-mocks';20import { MockBuilder, MockRender } from 'ng-mocks';21import { ngMocks } from 'ng-mocks/dist/lib/mock-helper';22import { MockBuilder, MockRender, ngMocks } from 'ng-mocks

Using AI Code Generation

1import { mock } from 'ng-mocks';2import { MyService } from './my-service';3describe('MyService', () => {4  let service: MyService;5  beforeEach(() => {6    service = mock(MyService);7  });8  it('should be created', () => {9    expect(service).toBeTruthy();10  });11});124 import { mock } from 'ng-mocks';13For example, if the MyService is defined in the app.module.ts file, then the app.module.ts file should be imported into the test.ts file as shown below:14import './app/app.module';

Using AI Code Generation

1import { MockBuilder, MockRender } from 'ng-mocks';2import { AppModule } from './app.module';3import { AppComponent } from './app.component';4import { TestBed } from '@angular/core/testing';5import { AppModule } from './app.module';6import { AppComponent } from './app.component';7describe('AppComponent', () => {8  beforeEach(async () => {9    await MockBuilder(AppComponent, AppModule);10    await TestBed.configureTestingModule({ imports: [AppModule] }).compileComponents();11  });12  it('should create the app', () => {13    const fixture = MockRender(AppComponent);14    const app = fixture.point.componentInstance;15    const fixture = TestBed.createComponent(AppComponent);16    const app = fixture.componentInstance;17    expect(app).toBeTruthy();18  });19});20import { Component } from '@angular/core';21@Component({22})23export class AppComponent {}24import { NgModule } from '@angular/core';25import { BrowserModule } from '@angular/platform-browser';26import { AppComponent } from './app.component';27@NgModule({28  imports: [BrowserModule],29})30export class AppModule {}

Using AI Code Generation

1const mock = require('ng-mocks');2import { mock } from 'ng-mocks';3const mock = require('ng-mocks');4import { mock } from 'ng-mocks';5const mock = require('ng-mocks');6import { mock } from 'ng-mocks';7const mock = require('ng-mocks');8import { mock } from 'ng-mocks';9const mock = require('ng-mocks');10import { mock } from 'ng-mocks';11const mock = require('ng-mocks');12import { mock } from 'ng-mocks';13const mock = require('ng-mocks');14import { mock } from 'ng-mocks';15const mock = require('ng-mocks');16import { mock } from 'ng-mocks';17const mock = require('ng-mocks');18import { mock } from 'ng-mocks';19const mock = require('ng-mocks');20import { mock } from 'ng-mocks';21const mock = require('ng-mocks');22import { mock } from 'ng-mocks';23const mock = require('ng-mocks');24import { mock } from 'ng-mocks';

Using AI Code Generation

1import { TestBed } from '@angular/core/testing';2import { MockRender } from 'ng-mocks';3import { MockBuilder } from 'ng-mocks';4import { TestComponent } from './test.component';5describe('TestComponent', () => {6  it('should create', () => {7    TestBed.configureTestingModule({8    }).compileComponents();9    const fixture = TestBed.createComponent(TestComponent);10    const component = fixture.componentInstance;11    expect(component).toBeTruthy();12    const fixture = MockRender(TestComponent);13    const component = fixture.point.componentInstance;14    expect(component).toBeTruthy();15  });16});

Using AI Code Generation

1import {ngMocks} from 'ng-mocks';2import {MyComponent} from './my-component';3describe('MyComponent', () => {4  it('should have a title', () => {5    const fixture = ngMocks.faster(MyComponent);6    const component = fixture.componentInstance;7    expect(component.title).toEqual('my-app');8  });9});10import {Component} from '@angular/core';11@Component({12})13export class MyComponent {14  title = 'my-app';15}16import {TestBed} from '@angular/core/testing';17import {MyComponent} from './my-component';18describe('MyComponent', () => {19  beforeEach(async () => {20    await TestBed.configureTestingModule({21    }).compileComponents();22  });23  it('should create the app', () => {24    const fixture = TestBed.createComponent(MyComponent);25    const app = fixture.componentInstance;26    expect(app).toBeTruthy();27  });28  it('should have a title', () => {29    const fixture = TestBed.createComponent(MyComponent);30    const app = fixture.componentInstance;31    expect(app.title).toEqual('my-app');32  });33});34import {TestBed} from '@angular/core/testing';35import {MyComponent} from './my-component';36describe('MyComponent', () => {37  beforeEach(async () => {38    await TestBed.configureTestingModule({39    }).compileComponents();40  });41  it('should create the app', () => {42    const fixture = TestBed.createComponent(MyComponent);43    const app = fixture.componentInstance;44    expect(app).toBeTruthy();45  });46  it('should have a title', () => {47    const fixture = TestBed.createComponent(MyComponent);48    const app = fixture.componentInstance;49    expect(app.title).toEqual('my-app');50  });51});52import {TestBed} from '@angular/core/testing';53import {MyComponent} from './my-component';54describe('MyComponent', () => {55  beforeEach(async () => {56    await TestBed.configureTestingModule({57    }).compileComponents();58  });59  it('should create the app', () => {60    const fixture = TestBed.createComponent(MyComponent);61    const app = fixture.componentInstance;62    expect(app).toBeTruthy

Using AI Code Generation

1import {ngMocks} from 'ng-mocks';2ngMocks.faster();3import './test.js';4import {TestBed} from '@angular/core/testing';5import {AppComponent} from './app.component';6import {AppModule} from './app.module';7TestBed.configureTestingModule({imports: [AppModule]}).compileComponents();8const fixture = TestBed.createComponent(AppComponent);9const component = fixture.componentInstance;10fixture.detectChanges();

Using AI Code Generation

1import { mock } from 'ng-mocks';2class MockedClass {3  public method(): void {4    console.log('mocked');5  }6}7const mockedClass = mock(MockedClass);8import { NgModule } from '@angular/core';9import { MockedClass } from '../../test';10@NgModule({11    {12    },13})14export class AppModule {}15import { Component } from '@angular/core';16import { MockedClass } from '../../test';17@Component({18    <button (click)="mockedClass.method()"></button>19})20export class AppComponent {21  constructor(public mockedClass: MockedClass) {}22}23import { TestBed } from '@angular/core/testing';24import { MockedClass } from '../../test';25import { AppComponent } from './app.component';26describe('AppComponent', () => {27  let mockedClass: MockedClass;28  beforeEach(async () => {29    await TestBed.configureTestingModule({30        {31        },32    }).compileComponents();33  });34  it('should call mocked method', () => {35    const fixture = TestBed.createComponent(AppComponent);36    fixture.detectChanges();37    const app = fixture.componentInstance;38    const button = fixture.nativeElement.querySelector('button');39    button.click();40    expect(app.mockedClass.method).toHaveBeenCalled();41  });42});43import {

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