debian-mirror-gitlab/spec/frontend/notes/components/discussion_navigator_spec.js

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/* global Mousetrap */
import 'mousetrap';
import { shallowMount, createLocalVue } from '@vue/test-utils';
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import Vue from 'vue';
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import DiscussionNavigator from '~/notes/components/discussion_navigator.vue';
import eventHub from '~/notes/event_hub';
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describe('notes/components/discussion_navigator', () => {
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const localVue = createLocalVue();
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let wrapper;
let jumpToNextDiscussion;
let jumpToPreviousDiscussion;
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const createComponent = () => {
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wrapper = shallowMount(DiscussionNavigator, {
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mixins: [
localVue.extend({
methods: {
jumpToNextDiscussion,
jumpToPreviousDiscussion,
},
}),
],
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});
};
beforeEach(() => {
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jumpToNextDiscussion = jest.fn();
jumpToPreviousDiscussion = jest.fn();
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});
afterEach(() => {
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if (wrapper) {
wrapper.destroy();
}
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wrapper = null;
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});
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describe('on create', () => {
let onSpy;
let vm;
beforeEach(() => {
onSpy = jest.spyOn(eventHub, '$on');
vm = new (Vue.extend(DiscussionNavigator))();
});
it('listens for jumpToFirstUnresolvedDiscussion events', () => {
expect(onSpy).toHaveBeenCalledWith(
'jumpToFirstUnresolvedDiscussion',
vm.jumpToFirstUnresolvedDiscussion,
);
});
});
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describe('on mount', () => {
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beforeEach(() => {
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createComponent();
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});
it('calls jumpToNextDiscussion when pressing `n`', () => {
Mousetrap.trigger('n');
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expect(jumpToNextDiscussion).toHaveBeenCalled();
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});
it('calls jumpToPreviousDiscussion when pressing `p`', () => {
Mousetrap.trigger('p');
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expect(jumpToPreviousDiscussion).toHaveBeenCalled();
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});
});
describe('on destroy', () => {
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let jumpFn;
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beforeEach(() => {
jest.spyOn(Mousetrap, 'unbind');
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jest.spyOn(eventHub, '$off');
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createComponent();
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jumpFn = wrapper.vm.jumpToFirstUnresolvedDiscussion;
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wrapper.destroy();
});
it('unbinds keys', () => {
expect(Mousetrap.unbind).toHaveBeenCalledWith('n');
expect(Mousetrap.unbind).toHaveBeenCalledWith('p');
});
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it('unbinds event hub listeners', () => {
expect(eventHub.$off).toHaveBeenCalledWith('jumpToFirstUnresolvedDiscussion', jumpFn);
});
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it('does not call jumpToNextDiscussion when pressing `n`', () => {
Mousetrap.trigger('n');
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expect(jumpToNextDiscussion).not.toHaveBeenCalled();
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});
it('does not call jumpToNextDiscussion when pressing `p`', () => {
Mousetrap.trigger('p');
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expect(jumpToPreviousDiscussion).not.toHaveBeenCalled();
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});
});
});