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import React from 'react';
import { shallow, mount } from 'enzyme';
import toJSON from 'enzyme-to-json';
import Pagination, { PAGINATION_QUERY } from '../components/Pagination';
import { MockedProvider } from 'react-apollo/test-utils';
import wait from 'waait';
import { fakeItem } from '../lib/testUtils';
import Router from 'next/router';
// mock the router because there isn't really a router instance
Router.router = { push() {}, prefetch() {} };
function makeMocksFor(length) {
return [
{
request: { query: PAGINATION_QUERY, variables: { skip: 0, first: 4 } },
result: {
data: {
itemsConnection: {
__typename: 'aggregate',
aggregate: {
count: length,
__typename: 'count',
},
},
},
},
},
];
}
describe('<Pagination/>', () => {
it('displays loading message', async () => {
const wrapper = mount(
<MockedProvider mocks={makeMocksFor(1)}>
<Pagination page={1} />
</MockedProvider>
);
await wait();
wrapper.update();
expect(toJSON(wrapper.find('div[data-test="pagination"]'))).toMatchSnapshot();
});
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');
});
it('disables prev button on first page', async () => {
const wrapper = mount(
<MockedProvider mocks={makeMocksFor(18)}>
<Pagination page={1} />
</MockedProvider>
);
await wait();
wrapper.update();
// first page
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();
// first page
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={2} />
</MockedProvider>
);
await wait();
wrapper.update();
// first page
expect(wrapper.find('a.prev').prop('aria-disabled')).toEqual(false);
expect(wrapper.find('a.next').prop('aria-disabled')).toEqual(false);
});
});
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