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import { mountExtended } from 'helpers/vue_test_utils_helper';
import { historyPushState } from '~/lib/utils/common_utils';
import ReleasesPagination from '~/releases/components/releases_pagination.vue';
jest.mock('~/lib/utils/common_utils', () => ({
...jest.requireActual('~/lib/utils/common_utils'),
historyPushState: jest.fn(),
}));
describe('releases_pagination.vue', () => {
const startCursor = 'startCursor';
const endCursor = 'endCursor';
let wrapper;
let onPrev;
let onNext;
const createComponent = (pageInfo) => {
onPrev = jest.fn();
onNext = jest.fn();
wrapper = mountExtended(ReleasesPagination, {
propsData: {
pageInfo,
},
listeners: {
prev: onPrev,
next: onNext,
},
});
};
afterEach(() => {
wrapper.destroy();
});
const singlePageInfo = {
hasPreviousPage: false,
hasNextPage: false,
startCursor,
endCursor,
};
const onlyNextPageInfo = {
hasPreviousPage: false,
hasNextPage: true,
startCursor,
endCursor,
};
const onlyPrevPageInfo = {
hasPreviousPage: true,
hasNextPage: false,
startCursor,
endCursor,
};
const prevAndNextPageInfo = {
hasPreviousPage: true,
hasNextPage: true,
startCursor,
endCursor,
};
const findPrevButton = () => wrapper.findByTestId('prevButton');
const findNextButton = () => wrapper.findByTestId('nextButton');
describe.each`
description | pageInfo | prevEnabled | nextEnabled
${'when there is only one page of results'} | ${singlePageInfo} | ${false} | ${false}
${'when there is a next page, but not a previous page'} | ${onlyNextPageInfo} | ${false} | ${true}
${'when there is a previous page, but not a next page'} | ${onlyPrevPageInfo} | ${true} | ${false}
${'when there is both a previous and next page'} | ${prevAndNextPageInfo} | ${true} | ${true}
`('component states', ({ description, pageInfo, prevEnabled, nextEnabled }) => {
describe(description, () => {
beforeEach(() => {
createComponent(pageInfo);
});
it(`renders the "Prev" button as ${prevEnabled ? 'enabled' : 'disabled'}`, () => {
expect(findPrevButton().attributes().disabled).toBe(prevEnabled ? undefined : 'disabled');
});
it(`renders the "Next" button as ${nextEnabled ? 'enabled' : 'disabled'}`, () => {
expect(findNextButton().attributes().disabled).toBe(nextEnabled ? undefined : 'disabled');
});
});
});
describe('button behavior', () => {
beforeEach(() => {
createComponent(prevAndNextPageInfo);
});
describe('next button behavior', () => {
beforeEach(() => {
findNextButton().trigger('click');
});
it('emits an "next" event with the "after" cursor', () => {
expect(onNext.mock.calls).toEqual([[endCursor]]);
});
it('calls historyPushState with the new URL', () => {
expect(historyPushState.mock.calls).toEqual([
[expect.stringContaining(`?after=${endCursor}`)],
]);
});
});
describe('prev button behavior', () => {
beforeEach(() => {
findPrevButton().trigger('click');
});
it('emits an "prev" event with the "before" cursor', () => {
expect(onPrev.mock.calls).toEqual([[startCursor]]);
});
it('calls historyPushState with the new URL', () => {
expect(historyPushState.mock.calls).toEqual([
[expect.stringContaining(`?before=${startCursor}`)],
]);
});
});
});
});
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