失败:模板解析错误:“ mat-card-title”不是已知元素

时间:2019-11-19 11:49:16

标签: angular typescript karma-jasmine angular-material-8

两个月前我开始了angular工作,设计了一个应用程序,然后进行ng测试,发现此错误:

失败:模板解析错误: “ mat-card-title”不是已知元素: 1.如果“ mat-card-title”是Angular组件,则请验证它是否属于此模块。 2.如果“ mat-card-title”是Web组件,则将“ CUSTOM_ELEMENTS_SCHEMA”添加到该组件的“ @ NgModule.schemas”以禁止显示此消息。 我不明白什么在我的代码中不起作用。

import { NgModule } from '@angular/core';

import { AppRoutingModule } from './app-routing.module';
import { AppComponent } from './app.component';
import { BrowserAnimationsModule } from '@angular/platform-browser/animations';
import { HeroService } from './hero.service';

import { AngularFireAuthModule } from '@angular/fire/auth';
import { AngularFireModule } from '@angular/fire';
import { AngularFirestoreModule } from '@angular/fire/firestore';
import { AngularFireStorageModule } from '@angular/fire/storage';
import { AngularMaterialModule } from './angular-material/angular-material.module';

import { environment } from 'src/environments/environment';

import { FormsModule } from '@angular/forms';

import { ToastrModule } from 'ngx-toastr';

import { HeroesListComponent } from './heroes-list/heroes-list.component';
import { HeroDetailComponent } from './hero-detail/hero-detail.component';
import { HeroSearchComponent } from './hero-search/hero-search.component';
import { HeroTableComponent } from './hero-table/hero-table.component';
import { LoginComponent } from './login/login.component';
import { NavbarHeroesComponent } from './navbar-heroes/navbar-heroes.component';
import { AddHeroesComponent } from './add-heroes/add-heroes.component';
import { HeroGridComponent } from './hero-grid/hero-grid.component';

import { FlexLayoutModule } from '@angular/flex-layout';



@NgModule({
declarations: [
  AppComponent,
  LoginComponent
],
imports: [
  BrowserModule,
  AppRoutingModule,
  BrowserAnimationsModule,
  FormsModule,
  AngularFireModule.initializeApp( environment.firebaseConfig ),
  AngularFirestoreModule,
  FlexLayoutModule,
  AngularFireAuthModule,
  AngularFireStorageModule,
  ToastrModule.forRoot(),
  AngularMaterialModule
],
providers: [
  HeroService
],
bootstrap: [AppComponent]
})
export class AppModule { }

这是AngularMaterialModule

 import { NgModule, CUSTOM_ELEMENTS_SCHEMA } from '@angular/core';
import { CommonModule } from '@angular/common';

import {
  MatButtonModule,
  MatTableModule,
  MatIconModule,
  MatFormFieldModule,
  MatSelectModule,
  MatInputModule,
  MatRadioModule,
  MatToolbarModule,
  MatCardModule,
  MatGridListModule,
  MatCheckboxModule,
 } from '@angular/material';

const moduleAngularMaterial = [
  MatButtonModule,
  MatIconModule,
  MatFormFieldModule,
  MatSelectModule,
  MatInputModule,
  MatTableModule,
  MatCheckboxModule,
  MatRadioModule,
  MatToolbarModule,
  MatCardModule,
  MatGridListModule
];


@NgModule({
  declarations: [
  ],
  imports: [
    moduleAngularMaterial,
    CommonModule
  ],
  exports: [
    moduleAngularMaterial
  ],
})
export class AngularMaterialModule { }

3 个答案:

答案 0 :(得分:2)

当组件模块为以下任何一种时,都会出现此类问题:

  1. 未导入声明和打算使用的模块中
  2. 未从声明使用Angular组件的组件的SharedModule中重新导出。

取决于项目的方案,或者:

  1. 将mat组件模块导入声明并打算使用的模块中,或者
  2. 从[YourCustom] Module中重新导出mat ui组件模块,该模块将为Angular导入mat Ui模块。

答案 1 :(得分:0)

传播数组值

imports: [...moduleAngularMaterial, CommonModule]

答案 2 :(得分:0)

Angular Docs中,请参阅:

Angular Material卡测试的API参考

从'@ angular / material / card / testing'导入{MatCardHarness};

这可能是您坚持测试的原因。