import 'reflect-metadata';

import MultiFilterComponent from './multi-filter.component';

const initMultiFilterComponent = () => {
    return new MultiFilterComponent();
};

describe('emitFiltersChanged', () => {
    // tslint:disable-next-line
    test('It calls onFiltersChanges.emit with the possibleFilters', () => {
        const multiFilterComponent = initMultiFilterComponent();
        multiFilterComponent.selectedFilters = ['abc', '123'];
        multiFilterComponent.onFiltersChanges.emit = jest.fn();

        multiFilterComponent.emitFiltersChanged();

        expect(multiFilterComponent.onFiltersChanges.emit)
        .toHaveBeenCalledWith(
            multiFilterComponent.selectedFilters,
        );
    });
});

describe('toggleFilters', () => {
    // tslint:disable-next-line
    test('It sets isFilterSelectionVisible to true if isFilterSelectionVisible is false', () => {
        const multiFilterComponent = initMultiFilterComponent();
        multiFilterComponent.isFilterSelectionVisible = true;

        multiFilterComponent.toggleFilters();

        expect(multiFilterComponent.isFilterSelectionVisible)
        .toBe(false);
    });

    // tslint:disable-next-line
    test('It sets isFilterSelectionVisible to false if isFilterSelectionVisible is true', () => {
        const multiFilterComponent = initMultiFilterComponent();
        multiFilterComponent.isFilterSelectionVisible = false;

        multiFilterComponent.toggleFilters();

        expect(multiFilterComponent.isFilterSelectionVisible)
        .toBe(true);
    });
});

describe('selectFilter', () => {
    // tslint:disable-next-line
    test('If the filter is not in the selectedFilters it calls emitFiltersChanged', () => {
        const multiFilterComponent = initMultiFilterComponent();
        multiFilterComponent.emitFiltersChanged = jest.fn();
        multiFilterComponent.selectedFilters = [];

        multiFilterComponent.selectFilter('test');

        expect(multiFilterComponent.emitFiltersChanged)
        .toHaveBeenCalled();
    });

    // tslint:disable-next-line
    test('If the filter is in the selectedFilters it does not call emitFiltersChanged', () => {
        const multiFilterComponent = initMultiFilterComponent();
        multiFilterComponent.emitFiltersChanged = jest.fn();
        multiFilterComponent.selectedFilters = ['test'];

        multiFilterComponent.selectFilter('test');

        expect(multiFilterComponent.emitFiltersChanged)
        .not.toHaveBeenCalled();
    });

    // tslint:disable-next-line
    test('If the filter is not in the selectedFilters it adds it to the selectedFilters', () => {
        const multiFilterComponent = initMultiFilterComponent();
        multiFilterComponent.emitFiltersChanged = jest.fn();
        multiFilterComponent.selectedFilters = [];

        multiFilterComponent.selectFilter('test');

        expect(multiFilterComponent.selectedFilters[0])
        .toBe('test');
    });
});

describe('deselectFilter', () => {
    // tslint:disable-next-line
    test('It removes the deselectedFilters from the selectedFilters', () => {
        const multiFilterComponent = initMultiFilterComponent();
        multiFilterComponent.emitFiltersChanged = jest.fn();
        multiFilterComponent.selectedFilters = ['test'];

        multiFilterComponent.deselectFilter('test');

        expect(
            multiFilterComponent.selectedFilters,
        ).toEqual([]);
    });

    // tslint:disable-next-line
    test('It calls emitFiltersChanged', () => {
        const multiFilterComponent = initMultiFilterComponent();
        multiFilterComponent.emitFiltersChanged = jest.fn();

        multiFilterComponent.deselectFilter('test');

        expect(multiFilterComponent.emitFiltersChanged)
        .toHaveBeenCalled();
    });
});