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import { GlDropdownItem, GlSearchBoxByType } from '@gitlab/ui';
import { shallowMount } from '@vue/test-utils';
import Vue from 'vue';
import Vuex from 'vuex';
import { extendedWrapper } from 'helpers/vue_test_utils_helper';
import { DEFAULT_DEBOUNCE_AND_THROTTLE_MS } from '~/lib/utils/constants';
import BranchesDropdown from '~/projects/commit/components/branches_dropdown.vue';
Vue.use(Vuex);
describe('BranchesDropdown', () => {
let wrapper;
let store;
const spyFetchBranches = jest.fn();
const createComponent = (term, state = { isFetching: false }) => {
store = new Vuex.Store({
getters: {
joinedBranches: () => ['_main_', '_branch_1_', '_branch_2_'],
},
actions: {
fetchBranches: spyFetchBranches,
},
state,
});
wrapper = extendedWrapper(
shallowMount(BranchesDropdown, {
store,
propsData: {
value: term,
},
}),
);
};
const findAllDropdownItems = () => wrapper.findAllComponents(GlDropdownItem);
const findSearchBoxByType = () => wrapper.findComponent(GlSearchBoxByType);
const findDropdownItemByIndex = (index) => wrapper.findAllComponents(GlDropdownItem).at(index);
const findNoResults = () => wrapper.findByTestId('empty-result-message');
const findLoading = () => wrapper.findByTestId('dropdown-text-loading-icon');
afterEach(() => {
wrapper.destroy();
wrapper = null;
spyFetchBranches.mockReset();
});
describe('On mount', () => {
beforeEach(() => {
createComponent('');
});
it('invokes fetchBranches', () => {
expect(spyFetchBranches).toHaveBeenCalled();
});
});
describe('Loading states', () => {
it('shows loading icon while fetching', () => {
createComponent('', { isFetching: true });
expect(findLoading().isVisible()).toBe(true);
});
it('does not show loading icon', () => {
createComponent('');
expect(findLoading().isVisible()).toBe(false);
});
});
describe('No branches found', () => {
beforeEach(() => {
createComponent('_non_existent_branch_');
});
it('renders empty results message', () => {
expect(findNoResults().text()).toBe('No matching results');
});
it('shows GlSearchBoxByType with default attributes', () => {
expect(findSearchBoxByType().exists()).toBe(true);
expect(findSearchBoxByType().vm.$attrs).toMatchObject({
placeholder: 'Search branches',
debounce: DEFAULT_DEBOUNCE_AND_THROTTLE_MS,
});
});
});
describe('Search term is empty', () => {
beforeEach(() => {
createComponent('');
});
it('renders all branches when search term is empty', () => {
expect(findAllDropdownItems()).toHaveLength(3);
expect(findDropdownItemByIndex(0).text()).toBe('_main_');
expect(findDropdownItemByIndex(1).text()).toBe('_branch_1_');
expect(findDropdownItemByIndex(2).text()).toBe('_branch_2_');
});
it('should not be selected on the inactive branch', () => {
expect(wrapper.vm.isSelected('_main_')).toBe(false);
});
});
describe('When searching', () => {
beforeEach(() => {
createComponent('');
});
it('invokes fetchBranches', async () => {
const spy = jest.spyOn(wrapper.vm, 'fetchBranches');
findSearchBoxByType().vm.$emit('input', '_anything_');
await wrapper.vm.$nextTick();
expect(spy).toHaveBeenCalledWith('_anything_');
expect(wrapper.vm.searchTerm).toBe('_anything_');
});
});
describe('Branches found', () => {
beforeEach(() => {
createComponent('_branch_1_', { branch: '_branch_1_' });
});
it('renders only the branch searched for', () => {
expect(findAllDropdownItems()).toHaveLength(1);
expect(findDropdownItemByIndex(0).text()).toBe('_branch_1_');
});
it('should not display empty results message', () => {
expect(findNoResults().exists()).toBe(false);
});
it('should signify this branch is selected', () => {
expect(wrapper.vm.isSelected('_branch_1_')).toBe(true);
});
it('should signify the branch is not selected', () => {
expect(wrapper.vm.isSelected('_not_selected_branch_')).toBe(false);
});
describe('Custom events', () => {
it('should emit selectBranch if an branch is clicked', () => {
findDropdownItemByIndex(0).vm.$emit('click');
expect(wrapper.emitted('selectBranch')).toEqual([['_branch_1_']]);
expect(wrapper.vm.searchTerm).toBe('_branch_1_');
});
});
});
describe('Case insensitive for search term', () => {
beforeEach(() => {
createComponent('_BrAnCh_1_');
});
it('renders only the branch searched for', () => {
expect(findAllDropdownItems()).toHaveLength(1);
expect(findDropdownItemByIndex(0).text()).toBe('_branch_1_');
});
});
});
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