Function withModule

packages/core/testing/src/test_bed.ts:983–998

(
  moduleDef: TestModuleMetadata,
  fn?: Function | null,
)

export function withModule(moduleDef: TestModuleMetadata): InjectSetupWrapper;
export function withModule(moduleDef: TestModuleMetadata, fn: Function): () => any;
export function withModule(
  moduleDef: TestModuleMetadata,
  fn?: Function | null,
): (() => any) | InjectSetupWrapper {
  if (fn) {
    // Not using an arrow function to preserve context passed from call site
    return function (this: unknown) {
      const testBed = TestBedImpl.INSTANCE;
      if (moduleDef) {
        testBed.configureTestingModule(moduleDef);
      }
      return fn.apply(this);
    };
  }
  return new InjectSetupWrapper(() => moduleDef);
}