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import Vue from 'vue';
import { cloneDeep } from 'lodash';
import { createComponentWithStore } from 'helpers/vue_mount_component_helper';
import { getByText } from '@testing-library/dom';
import { createStore } from '~/mr_notes/stores';
import DiffExpansionCell from '~/diffs/components/diff_expansion_cell.vue';
import { getPreviousLineIndex } from '~/diffs/store/utils';
import { INLINE_DIFF_VIEW_TYPE } from '~/diffs/constants';
import diffFileMockData from '../mock_data/diff_file';
const EXPAND_UP_CLASS = '.js-unfold';
const EXPAND_DOWN_CLASS = '.js-unfold-down';
const lineSources = {
[INLINE_DIFF_VIEW_TYPE]: 'highlighted_diff_lines',
};
const lineHandlers = {
[INLINE_DIFF_VIEW_TYPE]: line => line,
};
function makeLoadMoreLinesPayload({
sinceLine,
toLine,
oldLineNumber,
diffViewType,
fileHash,
nextLineNumbers = {},
unfold = false,
bottom = false,
isExpandDown = false,
}) {
return {
endpoint: 'contextLinesPath',
params: {
since: sinceLine,
to: toLine,
offset: toLine + 1 - oldLineNumber,
view: diffViewType,
unfold,
bottom,
},
lineNumbers: {
oldLineNumber,
newLineNumber: toLine + 1,
},
nextLineNumbers,
fileHash,
isExpandDown,
};
}
function getLine(file, type, index) {
const source = lineSources[type];
const handler = lineHandlers[type];
return handler(file[source][index]);
}
describe('DiffExpansionCell', () => {
let mockFile;
let mockLine;
let store;
let vm;
beforeEach(() => {
mockFile = cloneDeep(diffFileMockData);
mockLine = getLine(mockFile, INLINE_DIFF_VIEW_TYPE, 8);
store = createStore();
store.state.diffs.diffFiles = [mockFile];
jest.spyOn(store, 'dispatch').mockReturnValue(Promise.resolve());
});
const createComponent = (options = {}) => {
const cmp = Vue.extend(DiffExpansionCell);
const defaults = {
fileHash: mockFile.file_hash,
contextLinesPath: 'contextLinesPath',
line: mockLine,
isTop: false,
isBottom: false,
};
const props = { ...defaults, ...options };
vm = createComponentWithStore(cmp, store, props).$mount();
};
const findExpandUp = () => vm.$el.querySelector(EXPAND_UP_CLASS);
const findExpandDown = () => vm.$el.querySelector(EXPAND_DOWN_CLASS);
const findExpandAll = () => getByText(vm.$el, 'Show all unchanged lines');
describe('top row', () => {
it('should have "expand up" and "show all" option', () => {
createComponent({
isTop: true,
});
expect(findExpandUp()).not.toBe(null);
expect(findExpandDown()).toBe(null);
expect(findExpandAll()).not.toBe(null);
});
});
describe('middle row', () => {
it('should have "expand down", "show all", "expand up" option', () => {
createComponent();
expect(findExpandUp()).not.toBe(null);
expect(findExpandDown()).not.toBe(null);
expect(findExpandAll()).not.toBe(null);
});
});
describe('bottom row', () => {
it('should have "expand down" and "show all" option', () => {
createComponent({
isBottom: true,
});
expect(findExpandUp()).toBe(null);
expect(findExpandDown()).not.toBe(null);
expect(findExpandAll()).not.toBe(null);
});
});
describe('any row', () => {
[
{ diffViewType: INLINE_DIFF_VIEW_TYPE, lineIndex: 8, file: { parallel_diff_lines: [] } },
].forEach(({ diffViewType, file, lineIndex }) => {
describe(`with diffViewType (${diffViewType})`, () => {
beforeEach(() => {
mockLine = getLine(mockFile, diffViewType, lineIndex);
store.state.diffs.diffFiles = [{ ...mockFile, ...file }];
store.state.diffs.diffViewType = diffViewType;
});
it('does not initially dispatch anything', () => {
expect(store.dispatch).not.toHaveBeenCalled();
});
it('on expand all clicked, dispatch loadMoreLines', () => {
const oldLineNumber = mockLine.meta_data.old_pos;
const newLineNumber = mockLine.meta_data.new_pos;
const previousIndex = getPreviousLineIndex(diffViewType, mockFile, {
oldLineNumber,
newLineNumber,
});
createComponent();
findExpandAll().click();
expect(store.dispatch).toHaveBeenCalledWith(
'diffs/loadMoreLines',
makeLoadMoreLinesPayload({
fileHash: mockFile.file_hash,
toLine: newLineNumber - 1,
sinceLine: previousIndex,
oldLineNumber,
diffViewType,
}),
);
});
it('on expand up clicked, dispatch loadMoreLines', () => {
mockLine.meta_data.old_pos = 200;
mockLine.meta_data.new_pos = 200;
const oldLineNumber = mockLine.meta_data.old_pos;
const newLineNumber = mockLine.meta_data.new_pos;
createComponent();
findExpandUp().click();
expect(store.dispatch).toHaveBeenCalledWith(
'diffs/loadMoreLines',
makeLoadMoreLinesPayload({
fileHash: mockFile.file_hash,
toLine: newLineNumber - 1,
sinceLine: 179,
oldLineNumber,
diffViewType,
unfold: true,
}),
);
});
it('on expand down clicked, dispatch loadMoreLines', () => {
mockFile[lineSources[diffViewType]][lineIndex + 1] = cloneDeep(
mockFile[lineSources[diffViewType]][lineIndex],
);
const nextLine = getLine(mockFile, diffViewType, lineIndex + 1);
nextLine.meta_data.old_pos = 300;
nextLine.meta_data.new_pos = 300;
mockLine.meta_data.old_pos = 200;
mockLine.meta_data.new_pos = 200;
createComponent();
findExpandDown().click();
expect(store.dispatch).toHaveBeenCalledWith('diffs/loadMoreLines', {
endpoint: 'contextLinesPath',
params: {
since: 1,
to: 21, // the load amount, plus 1 line
offset: 0,
view: diffViewType,
unfold: true,
bottom: true,
},
lineNumbers: {
// when expanding down, these are based on the previous line, 0, in this case
oldLineNumber: 0,
newLineNumber: 0,
},
nextLineNumbers: { old_line: 200, new_line: 200 },
fileHash: mockFile.file_hash,
isExpandDown: true,
});
});
});
});
});
});
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