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import { mount } from 'enzyme';
import wait from 'waait';
import toJSON from 'enzyme-to-json';
import Router from 'next/router';
import Pagination, { PAGINATION_QUERY } from '../components/Pagination';
import { MockedProvider } from 'react-apollo/test-utils';
Router.router = {
push() {},
prefetch() {},
};
function makeMocksFor(length) {
return [
{
request: { query: PAGINATION_QUERY },
result: {
data: {
itemsConnection: {
__typename: 'aggregate',
aggregate: {
count: length,
__typename: 'count',
},
},
},
},
},
];
}
describe('<Pagination/>', () => {
it('displays a loading message', () => {
const wrapper = mount(
<MockedProvider mocks={makeMocksFor(1)}>
<Pagination page={1} />
</MockedProvider>
);
const pagination = wrapper.find('[data-test="pagination"]');
expect(wrapper.text()).toContain('Loading...');
});
it('renders pagination for 18 items', async () => {
const wrapper = mount(
<MockedProvider mocks={makeMocksFor(18)}>
<Pagination page={1} />
</MockedProvider>
);
await wait();
wrapper.update();
expect(wrapper.find('.totalPages').text()).toEqual('5');
const pagination = wrapper.find('div[data-test="pagination"]');
expect(toJSON(pagination)).toMatchSnapshot();
});
it('disables prev button on first page', async () => {
const wrapper = mount(
<MockedProvider mocks={makeMocksFor(18)}>
<Pagination page={1} />
</MockedProvider>
);
await wait();
wrapper.update();
expect(wrapper.find('a.prev').prop('aria-disabled')).toEqual(true);
expect(wrapper.find('a.next').prop('aria-disabled')).toEqual(false);
});
it('disables next button on last page', async () => {
const wrapper = mount(
<MockedProvider mocks={makeMocksFor(18)}>
<Pagination page={5} />
</MockedProvider>
);
await wait();
wrapper.update();
expect(wrapper.find('a.prev').prop('aria-disabled')).toEqual(false);
expect(wrapper.find('a.next').prop('aria-disabled')).toEqual(true);
});
it('enables all buttons on a middle page', async () => {
const wrapper = mount(
<MockedProvider mocks={makeMocksFor(18)}>
<Pagination page={3} />
</MockedProvider>
);
await wait();
wrapper.update();
expect(wrapper.find('a.prev').prop('aria-disabled')).toEqual(false);
expect(wrapper.find('a.next').prop('aria-disabled')).toEqual(false);
});
});
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