first version of sample.component finished

src/app/error/error.component.html

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+<rb-alert alertTitle="Error" type="error" okBtnLabel="Discard">
+  {{message}}
+</rb-alert>

src/app/error/error.component.spec.ts

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+import { async, ComponentFixture, TestBed } from '@angular/core/testing';
+
+import { ErrorComponent } from './error.component';
+import {ModalService, RbUiComponentsModule} from '@inst-iot/bosch-angular-ui-components';
+import {By} from '@angular/platform-browser';
+
+describe('ErrorComponent', () => {
+  let component: ErrorComponent;
+  let fixture: ComponentFixture<ErrorComponent>;
+  let css;   // get native element by css selector
+
+  beforeEach(async(() => {
+    TestBed.configureTestingModule({
+      declarations: [ ErrorComponent ],
+      imports: [
+        RbUiComponentsModule,
+      ],
+      providers: [
+        ModalService
+      ]
+    })
+    .compileComponents();
+  }));
+
+  beforeEach(() => {
+    fixture = TestBed.createComponent(ErrorComponent);
+    component = fixture.componentInstance;
+    fixture.detectChanges();
+    css = (selector) => fixture.debugElement.query(By.css(selector)).nativeElement;
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+
+  it('should show the alert', () => {
+    expect(css('rb-alert')).toBeTruthy();
+  });
+
+  it('should have the right message', () => {
+    component.message = 'test';
+    fixture.detectChanges();
+    expect(css('.dialog-text').innerText).toBe('test');
+  });
+});

src/app/error/error.component.ts

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+import { Component, OnInit } from '@angular/core';
+
+@Component({
+  selector: 'app-error',
+  templateUrl: './error.component.html',
+  styleUrls: ['./error.component.scss']
+})
+export class ErrorComponent implements OnInit {
+
+  message = '';
+
+  constructor() { }
+
+  ngOnInit(): void {
+  }
+
+}