SpyLocation

  
    class SpyLocation implements Location {  urlChanges: string[];  setInitialPath(url: string): void;  setBaseHref(url: string): void;  path(): string;  getState(): unknown;  isCurrentPathEqualTo(path: string, query?: string): boolean;  simulateUrlPop(pathname: string): void;  simulateHashChange(pathname: string): void;  prepareExternalUrl(url: string): string;  go(path: string, query?: string, state?: any): void;  replaceState(path: string, query?: string, state?: any): void;  forward(): void;  back(): void;  historyGo(relativePosition?: number): void;  onUrlChange(fn: (url: string, state: unknown) => void): VoidFunction;  subscribe(onNext: (value: any) => void, onThrow?: ((error: any) => void) | null | undefined, onReturn?: (() => void) | null | undefined): SubscriptionLike;  normalize(url: string): string;}