import 'reflect-metadata';

import {
    GroupedLayoutsInterface,
    LayoutInterface,
} from './index';

import {
    ObjectUtils,
} from './../../helpers/functions/index';

import GroupedLayoutsModel from './grouped-layouts.model';

describe('chooseARandomLayout', () => {
    // tslint:disable-next-line
    test('It looks for layout properties until one with length more than 0 is found', () => {
        const groupedLayouts = {
            frontCover: [],
            interior: [{}],
        } as GroupedLayoutsInterface;
        ObjectUtils.pickRandomProperty = jest.fn()
            .mockReturnValueOnce('frontCover')
            .mockReturnValue('interior');
        ObjectUtils.randomValueFromArray = jest.fn()
            .mockReturnValue('random');

        GroupedLayoutsModel.chooseARandomLayout(
            groupedLayouts,
            undefined,
        );

        expect(
            ObjectUtils.randomValueFromArray,
        ).toHaveBeenCalledWith(groupedLayouts.interior);
    });

    // tslint:disable-next-line
    test('It returns the value from randomValueFromArray', () => {
        const groupedLayouts = {
            frontCover: [],
            interior: [{}],
        } as GroupedLayoutsInterface;
        ObjectUtils.pickRandomProperty = jest.fn()
            .mockReturnValue('interior');
        ObjectUtils.randomValueFromArray = jest.fn()
            .mockReturnValue('test');

        expect(
            GroupedLayoutsModel.chooseARandomLayout(
                groupedLayouts,
                undefined,
            ),
        ).toBe('test');
    });

    // tslint:disable-next-line
    test('It gets values from randomValueFromArray until the response does not equal the lastLayoutValue', () => {
        const groupedLayouts = {
            frontCover: [],
            interior: [{}],
        } as GroupedLayoutsInterface;
        const lastLayoutValue = {} as LayoutInterface;
        ObjectUtils.pickRandomProperty = jest.fn()
            .mockReturnValue('interior');
        ObjectUtils.randomValueFromArray = jest.fn()
            .mockReturnValueOnce(lastLayoutValue)
            .mockReturnValue('nottest');

        expect(
            GroupedLayoutsModel.chooseARandomLayout(
                groupedLayouts,
                lastLayoutValue,
            ),
        ).toBe('nottest');
    });
});