Function verify

packages/core/test/acceptance/host_binding_spec.ts:1664–1713

(
      tag: string,
      prop: string,
      value: any,
      expectedSanitizedValue: any,
      bypassFn: Function,
      isAttribute: boolean = true,
      throws: boolean = false,
    )

      return value;
    }
    function verify(
      tag: string,
      prop: string,
      value: any,
      expectedSanitizedValue: any,
      bypassFn: Function,
      isAttribute: boolean = true,
      throws: boolean = false,
    ) {
      it(`should sanitize <${tag} ${prop}> ${isAttribute ? 'properties' : 'attributes'} (value=${value})`, () => {
        @Directive({
          selector: '[unsafeUrlHostBindingDir]',
          host: {
            [`[${isAttribute ? 'attr.' : ''}${prop}]`]: 'value',
          },
          standalone: false,
        })
        class UnsafeDir {
          value: any = value;
        }

        @Component({
          template: `<${tag} unsafeUrlHostBindingDir></${tag}>`,
          standalone: false,

          changeDetection: ChangeDetectionStrategy.Eager,
        })
        class App {
          @ViewChild(UnsafeDir) unsafeDir!: UnsafeDir;
        }

        TestBed.configureTestingModule({declarations: [App, UnsafeDir]});
        const fixture = TestBed.createComponent(App);
        fixture.detectChanges();
        const el = fixture.nativeElement.querySelector(tag)!;
        const current = () => (isAttribute ? el.getAttribute(prop) : (el as any)[prop]);

        fixture.componentInstance.unsafeDir.value = value;
        fixture.detectChanges();
        expect(current()).toEqual(expectedSanitizedValue);

        fixture.componentInstance.unsafeDir.value = bypassFn(value);
        if (throws) {
          expect(() => fixture.detectChanges()).toThrowError(/Required a safe URL, got a \w+/);
        } else {
          fixture.detectChanges();
          expect(current()).toEqual(bypassFn == identity ? expectedSanitizedValue : value);
        }
      });
    }

    verify(
      'a',