gitlab-org--gitlab-foss/spec/frontend/pdf/page_spec.js

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import Vue from 'vue';
import mountComponent from 'helpers/vue_mount_component_helper';
import PageComponent from '~/pdf/page/index.vue';
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jest.mock('pdfjs-dist/webpack', () => {
return { default: jest.requireActual('pdfjs-dist/build/pdf') };
});
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describe('Page component', () => {
const Component = Vue.extend(PageComponent);
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let vm;
afterEach(() => {
vm.$destroy();
});
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it('renders the page when mounting', done => {
const promise = Promise.resolve();
const testPage = {
render: jest.fn().mockReturnValue({ promise: Promise.resolve() }),
getViewport: jest.fn().mockReturnValue({}),
};
vm = mountComponent(Component, {
page: testPage,
number: 1,
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});
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expect(vm.rendering).toBe(true);
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promise
.then(() => {
expect(testPage.render).toHaveBeenCalledWith(vm.renderContext);
expect(vm.rendering).toBe(false);
})
.then(done)
.catch(done.fail);
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});
});