import 'reflect-metadata';

import {
    MultiFilterChipsComponent,
} from './multi-filter-chips.component';

const initMultiFilterChipsComponent = () => {
    return new MultiFilterChipsComponent();
};

describe('get noSelectedFilters', () => {
    test('Returns false if there at least 1 selected filter', () => {
        const multiFilterChipsComponent = initMultiFilterChipsComponent();
        multiFilterChipsComponent.selectedFilters = ['foo'];

        expect(multiFilterChipsComponent.noSelectedFilters)
            .toBe(false);
    });

    test('Returns true if there are no selected filter', () => {
        const multiFilterChipsComponent = initMultiFilterChipsComponent();
        multiFilterChipsComponent.selectedFilters = [];

        expect(multiFilterChipsComponent.noSelectedFilters)
            .toBe(true);
    });
});

describe('isSelected', () => {
    test('Returns false if selectedFilter is empty', () => {
        const multiFilterChipsComponent = initMultiFilterChipsComponent();
        multiFilterChipsComponent.selectedFilters = [];

        const result = multiFilterChipsComponent.isSelected('foo');

        expect(result).toBe(false);
    });

    // tslint:disable-next-line
    test('Returns false if supplied filter is not found selectedFilter is not found in the selectedFilters array', () => {
        const multiFilterChipsComponent = initMultiFilterChipsComponent();
        multiFilterChipsComponent.selectedFilters = ['bar', 'baz'];

        const result = multiFilterChipsComponent.isSelected('foo');

        expect(result).toBe(false);
    });

    // tslint:disable-next-line
    test('Returns true if supplied filter is found selectedFilter is not found in the selectedFilters array', () => {
        const multiFilterChipsComponent = initMultiFilterChipsComponent();
        multiFilterChipsComponent.selectedFilters = ['bar', 'foo', 'baz'];

        const result = multiFilterChipsComponent.isSelected('foo');

        expect(result).toBe(true);
    });
});

describe('toggleFilter', () => {
    test('Calls onToggleFilter.emit with the filter', () => {
        const multiFilterChipsComponent = initMultiFilterChipsComponent();
        multiFilterChipsComponent.onToggleFilter.emit = jest.fn();

        multiFilterChipsComponent.toggleFilter('foo');

        expect(multiFilterChipsComponent.onToggleFilter.emit)
            .toHaveBeenCalledWith('foo');
    });
});

describe('clearAllFilters', () => {
    test('Calls onClearAllFilters.emit if there are filters selected', () => {
        const multiFilterChipsComponent = initMultiFilterChipsComponent();
        multiFilterChipsComponent.selectedFilters = ['foo'];
        multiFilterChipsComponent.onClearAllFilters.emit = jest.fn();

        multiFilterChipsComponent.clearAllFilters();

        expect(multiFilterChipsComponent.onClearAllFilters.emit)
            .toHaveBeenCalled();
    });

    // tslint:disable-next-line
    test('Does not call onClearAllFilters.emit if there are no filters selected', () => {
        const multiFilterChipsComponent = initMultiFilterChipsComponent();
        multiFilterChipsComponent.selectedFilters = [];
        multiFilterChipsComponent.onClearAllFilters.emit = jest.fn();

        multiFilterChipsComponent.clearAllFilters();

        expect(multiFilterChipsComponent.onClearAllFilters.emit)
            .not.toHaveBeenCalled();
    });
});