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2e0c98bd3f
Adds support for passing in `Binding` objects into `TestBed.createComponent`. This makes it easier to test components by avoiding the need to create a wrapper component. Furthermore, it keeps the behavior consistent between tests and the actual app. For example, given a custom checkbox that looks like this:
```typescript
@Component({
selector: 'my-checkbox',
template: '...',
host: {'[class.checked]': 'isChecked()'}
})
export class MyCheckbox {
isChecked = input(false);
}
```
A test for the `isChecked` input would look something like this:
```typescript
it('should toggle the checked class', () => {
@Component({
imports: [MyCheckbox],
template: '<my-checkbox [isChecked]="isChecked"/>',
})
class Wrapper {
isChecked = false;
}
const fixture = TestBed.createComponent(Wrapper);
const checkbox = fixture.nativeElement.querySelector('my-checkbox');
fixture.detectChanges();
expect(checkbox.classList).not.toContain('checked');
fixture.componentInstance.isChecked = true;
fixture.detectChanges();
expect(checkbox.classList).toContain('checked');
});
```
Whereas with the new API, the test would look like this:
```typescript
it('should toggle the checked class', () => {
const isChecked = signal(false);
const fixture = TestBed.createComponent(MyCheckbox, {
bindings: [inputBinding('isChecked', isChecked)]
});
const checkbox = fixture.nativeElement.querySelector('my-checkbox');
fixture.detectChanges();
expect(checkbox.classList).not.toContain('checked');
isChecked.set(true);
fixture.detectChanges();
expect(checkbox.classList).toContain('checked');
});
```
PR Close #62040
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| index.api.md | ||