Let's make your life better testing Angular like writing jQuery code. It's inspired by https://github.com/airbnb/enzyme.

angular-test-helper-usage.ts

describe('Component', () => {
  let wrapper;

  beforeEach(() => {
    wrapper = build(Component);
    wrapper.set({
      data: 'value',
    });
  });
  
  it('should include data', () => {
    expect(wrapper.text).toMatch('value');
  });

});

angular-test-helper.ts

import { async, ComponentFixture, TestBed } from '@angular/core/testing';
import { By } from '@angular/platform-browser';

function createWrapper(fixture, debugElements) {
  const debugElement = debugElements[0];

  return {
    get fixture() {
      return fixture;
    },

    detectChanges() {
      fixture.detectChanges();
      return this;
    },

    get debugElement() {
      return debugElement;
    },

    get component() {
      // ensure the current element is the host of a component
      if (debugElement && this.element === debugElement._debugContext.componentRenderElement) {
        return debugElement.componentInstance;
      }
    },

    instance(token) {
      return debugElement.injector.get(token);
    },

    get element() {
      return debugElement && debugElement.nativeElement;
    },

    get text(): string {
      return this.element.textContent;
    },

    get length(): number {
      return debugElements.length;
    },

    attr(attribute) {
      return this.element.getAttribute(attribute);
    },

    hasClass(className): boolean {
      return this.element.classList.contains(className);
    },

    simulate(eventNameOrObject, options = {}) {
      if (typeof eventNameOrObject === 'object')  {
        this.element.dispatchEvent(eventNameOrObject);
      } else {
        this.element.dispatchEvent(new Event(eventNameOrObject, options));
      }
      this.detectChanges();
      return this;
    },

    at(index) {
      return createWrapper(fixture, [debugElements[index]]);
    },

    find(selector) {
      return createWrapper(fixture,
                           debugElement.queryAll(By.css(selector)));
    },

    get(property) {
      if (this.component) {
        return this.component[property];
      }
      return this.element[property];
    },

    set(properties) {
      if (this.component) {
        Object.assign(this.component, properties);
        this.detectChanges();
      } else {
        Object.assign(this.element, properties);
      }

      return this;
    },
  }
}

export function build(component) {
  const fixture = TestBed.createComponent(component);
  fixture.detectChanges();

  return createWrapper(fixture, [fixture.debugElement]);
}