test(#298): additional case with pipes

tests/issue-298/pipes.spec.ts

@@ -0,0 +1,82 @@
+import { Component, Pipe, PipeTransform } from '@angular/core';
+import { By } from '@angular/platform-browser';
+import { MockBuilder, MockRender, ngMocks } from 'ng-mocks';
+
+@Pipe({
+  name: 'pipe',
+  pure: false,
+})
+class MyPipe implements PipeTransform {
+  public lastValue: any;
+
+  public transform(value: any): any {
+    this.lastValue = value;
+
+    return value;
+  }
+}
+
+@Component({
+  selector: 'app',
+  template: `
+    <div class="p1">{{ 'd1' | pipe }}</div>
+    <div class="p2">{{ 'd2' | pipe }}</div>
+    <div class="p3">{{ 'd3' | pipe }}</div>
+  `,
+})
+export class AppComponent {}
+
+describe('issue-298:pipes', () => {
+  beforeEach(() => MockBuilder(AppComponent).keep(MyPipe));
+
+  it('handles pipes via findInstance', () => {
+    const fixture = MockRender(AppComponent);
+
+    const instance1 = ngMocks.findInstance(
+      fixture.debugElement.query(By.css('.p1')),
+      MyPipe,
+    );
+    const instance2 = ngMocks.findInstance(
+      fixture.debugElement.query(By.css('.p2')),
+      MyPipe,
+    );
+    const instance3 = ngMocks.findInstance(
+      fixture.debugElement.query(By.css('.p3')),
+      MyPipe,
+    );
+
+    expect(instance1).toBeDefined();
+    expect(instance2).toBeDefined();
+    expect(instance3).toBeDefined();
+    expect(instance1).not.toBe(instance2);
+    expect(instance1).not.toBe(instance3);
+    expect(instance2).not.toBe(instance3);
+    expect(instance1.lastValue).toEqual('d1');
+    expect(instance2.lastValue).toEqual('d2');
+    expect(instance3.lastValue).toEqual('d3');
+  });
+
+  it('handles pipes via findInstances', () => {
+    const fixture = MockRender(AppComponent);
+
+    const instances1 = ngMocks.findInstances(
+      fixture.debugElement.query(By.css('.p1')),
+      MyPipe,
+    );
+    const instances2 = ngMocks.findInstances(
+      fixture.debugElement.query(By.css('.p2')),
+      MyPipe,
+    );
+    const instances3 = ngMocks.findInstances(
+      fixture.debugElement.query(By.css('.p3')),
+      MyPipe,
+    );
+
+    expect(instances1.length).toEqual(1);
+    expect(instances2.length).toEqual(1);
+    expect(instances3.length).toEqual(1);
+    expect(instances1[0].lastValue).toEqual('d1');
+    expect(instances2[0].lastValue).toEqual('d2');
+    expect(instances3[0].lastValue).toEqual('d3');
+  });
+});