Google Maps jest mock

maps.spec.ts

type Suggestions = google.maps.places.AutocompletePrediction[] | null;

describe('Your Test', () => {
    const getMaps = (type = 'success', data: Suggestions): any => ({
        maps: {
            places: {
                AutocompleteService: jest.fn(() => ({
                    getPlacePredictions: (_: any, cb: (dataArg: Suggestions) => void) => {
                        setTimeout(() => {
                            cb(type === "success" ? data : null);
                        }, 500)
                    }
                })),
                AutocompleteSessionToken: jest.fn()
            },
        },
    });
    
    it('should blabla', () => {
        global.google = getMaps('success', []); // array is the places suggestions

        await new Promise(res => setTimeout(res, 1000));
        expect(whatever).toBe([]);
    });
})