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import { mount, shallowMount } from '@vue/test-utils';
import { nextTick } from 'vue';
import { hasHorizontalOverflow } from '~/lib/utils/dom_utils';
import TooltipOnTruncate from '~/vue_shared/components/tooltip_on_truncate.vue';
import { createMockDirective, getBinding } from 'helpers/vue_mock_directive';
const MOCK_TITLE = 'lorem-ipsum-dolar-sit-amit-consectur-adipiscing-elit-sed-do';
const SHORT_TITLE = 'my-text';
const createChildElement = () => `<a href="#">${MOCK_TITLE}</a>`;
jest.mock('~/lib/utils/dom_utils', () => ({
...jest.requireActual('~/lib/utils/dom_utils'),
hasHorizontalOverflow: jest.fn().mockImplementation(() => {
throw new Error('this needs to be mocked');
}),
}));
describe('TooltipOnTruncate component', () => {
let wrapper;
let parent;
const createComponent = ({ propsData, ...options } = {}) => {
wrapper = shallowMount(TooltipOnTruncate, {
propsData: {
title: MOCK_TITLE,
...propsData,
},
slots: {
default: [MOCK_TITLE],
},
directives: {
GlTooltip: createMockDirective(),
GlResizeObserver: createMockDirective(),
},
...options,
});
};
const createWrappedComponent = ({ propsData, ...options }) => {
const WrappedTooltipOnTruncate = {
...TooltipOnTruncate,
directives: {
...TooltipOnTruncate.directives,
GlTooltip: createMockDirective(),
GlResizeObserver: createMockDirective(),
},
};
// set a parent around the tested component
parent = mount(
{
props: {
title: { default: '' },
},
template: `
<TooltipOnTruncate :title="title" truncate-target="child">
<div>{{title}}</div>
</TooltipOnTruncate>
`,
components: {
TooltipOnTruncate: WrappedTooltipOnTruncate,
},
},
{
propsData: { ...propsData },
...options,
},
);
wrapper = parent.find(WrappedTooltipOnTruncate);
};
const getTooltipValue = () => getBinding(wrapper.element, 'gl-tooltip')?.value;
const resize = async ({ truncate }) => {
hasHorizontalOverflow.mockReturnValueOnce(truncate);
getBinding(wrapper.element, 'gl-resize-observer').value();
await nextTick();
};
afterEach(() => {
wrapper.destroy();
});
describe('when truncated', () => {
beforeEach(async () => {
hasHorizontalOverflow.mockReturnValueOnce(true);
createComponent();
});
it('renders tooltip', async () => {
expect(hasHorizontalOverflow).toHaveBeenLastCalledWith(wrapper.element);
expect(getTooltipValue()).toMatchObject({
title: MOCK_TITLE,
placement: 'top',
disabled: false,
});
expect(wrapper.classes('js-show-tooltip')).toBe(true);
});
});
describe('with default target', () => {
beforeEach(async () => {
hasHorizontalOverflow.mockReturnValueOnce(false);
createComponent();
});
it('does not render tooltip if not truncated', () => {
expect(hasHorizontalOverflow).toHaveBeenLastCalledWith(wrapper.element);
expect(getTooltipValue()).toMatchObject({
disabled: true,
});
expect(wrapper.classes('js-show-tooltip')).toBe(false);
});
it('renders tooltip on resize', async () => {
await resize({ truncate: true });
expect(getTooltipValue()).toMatchObject({
disabled: false,
});
await resize({ truncate: false });
expect(getTooltipValue()).toMatchObject({
disabled: true,
});
});
});
describe('with child target', () => {
it('renders tooltip if truncated', async () => {
hasHorizontalOverflow.mockReturnValueOnce(true);
createComponent({
propsData: {
truncateTarget: 'child',
},
slots: {
default: createChildElement(),
},
});
expect(hasHorizontalOverflow).toHaveBeenLastCalledWith(wrapper.element.childNodes[0]);
await nextTick();
expect(getTooltipValue()).toMatchObject({
title: MOCK_TITLE,
placement: 'top',
disabled: false,
});
});
it('does not render tooltip if normal', async () => {
hasHorizontalOverflow.mockReturnValueOnce(false);
createComponent({
propsData: {
truncateTarget: 'child',
},
slots: {
default: createChildElement(),
},
});
expect(hasHorizontalOverflow).toHaveBeenLastCalledWith(wrapper.element.childNodes[0]);
await nextTick();
expect(getTooltipValue()).toMatchObject({
disabled: true,
});
});
});
describe('with fn target', () => {
it('renders tooltip if truncated', async () => {
hasHorizontalOverflow.mockReturnValueOnce(true);
createComponent({
propsData: {
truncateTarget: (el) => el.childNodes[1],
},
slots: {
default: [createChildElement(), createChildElement()],
},
});
expect(hasHorizontalOverflow).toHaveBeenLastCalledWith(wrapper.element.childNodes[1]);
await nextTick();
expect(getTooltipValue()).toMatchObject({
disabled: false,
});
});
});
describe('placement', () => {
it('sets placement when tooltip is rendered', () => {
const mockPlacement = 'bottom';
hasHorizontalOverflow.mockReturnValueOnce(true);
createComponent({
propsData: {
placement: mockPlacement,
},
});
expect(hasHorizontalOverflow).toHaveBeenLastCalledWith(wrapper.element);
expect(getTooltipValue()).toMatchObject({
placement: mockPlacement,
});
});
});
describe('updates when title and slot content changes', () => {
describe('is initialized with a long text', () => {
beforeEach(async () => {
hasHorizontalOverflow.mockReturnValueOnce(true);
createWrappedComponent({
propsData: { title: MOCK_TITLE },
});
await nextTick();
});
it('renders tooltip', () => {
expect(getTooltipValue()).toMatchObject({
title: MOCK_TITLE,
placement: 'top',
disabled: false,
});
});
it('does not render tooltip after updated to a short text', async () => {
hasHorizontalOverflow.mockReturnValueOnce(false);
parent.setProps({
title: SHORT_TITLE,
});
await nextTick();
await nextTick(); // wait 2 times to get an updated slot
expect(getTooltipValue()).toMatchObject({
title: SHORT_TITLE,
disabled: true,
});
});
});
describe('is initialized with a short text that does not overflow', () => {
beforeEach(async () => {
hasHorizontalOverflow.mockReturnValueOnce(false);
createWrappedComponent({
propsData: { title: MOCK_TITLE },
});
await nextTick();
});
it('does not render tooltip', () => {
expect(getTooltipValue()).toMatchObject({
title: MOCK_TITLE,
disabled: true,
});
});
it('renders tooltip after text is updated', async () => {
hasHorizontalOverflow.mockReturnValueOnce(true);
parent.setProps({
title: SHORT_TITLE,
});
await nextTick();
await nextTick(); // wait 2 times to get an updated slot
expect(getTooltipValue()).toMatchObject({
title: SHORT_TITLE,
disabled: false,
});
});
});
});
});
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