113 lines
4.3 KiB
JavaScript
113 lines
4.3 KiB
JavaScript
import * as diffsHelper from '~/helpers/diffs_helper';
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describe('diffs helper', () => {
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function getDiffFile(withOverrides = {}) {
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return {
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parallel_diff_lines: ['line'],
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highlighted_diff_lines: ['line'],
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blob: {
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readable_text: 'text',
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},
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...withOverrides,
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};
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}
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describe('hasInlineLines', () => {
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it('is false when the file does not exist', () => {
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expect(diffsHelper.hasInlineLines()).toBe(false);
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});
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it('is false when the file does not have the highlighted_diff_lines property', () => {
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const missingInline = getDiffFile({ highlighted_diff_lines: undefined });
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expect(diffsHelper.hasInlineLines(missingInline)).toBe(false);
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});
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it('is false when the file has zero highlighted_diff_lines', () => {
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const emptyInline = getDiffFile({ highlighted_diff_lines: [] });
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expect(diffsHelper.hasInlineLines(emptyInline)).toBe(false);
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});
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it('is true when the file has at least 1 highlighted_diff_lines', () => {
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expect(diffsHelper.hasInlineLines(getDiffFile())).toBe(true);
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});
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});
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describe('hasParallelLines', () => {
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it('is false when the file does not exist', () => {
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expect(diffsHelper.hasParallelLines()).toBe(false);
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});
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it('is false when the file does not have the parallel_diff_lines property', () => {
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const missingInline = getDiffFile({ parallel_diff_lines: undefined });
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expect(diffsHelper.hasParallelLines(missingInline)).toBe(false);
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});
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it('is false when the file has zero parallel_diff_lines', () => {
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const emptyInline = getDiffFile({ parallel_diff_lines: [] });
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expect(diffsHelper.hasParallelLines(emptyInline)).toBe(false);
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});
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it('is true when the file has at least 1 parallel_diff_lines', () => {
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expect(diffsHelper.hasParallelLines(getDiffFile())).toBe(true);
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});
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});
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describe('isSingleViewStyle', () => {
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it('is true when the file has at least 1 inline line but no parallel lines for any reason', () => {
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const noParallelLines = getDiffFile({ parallel_diff_lines: undefined });
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const emptyParallelLines = getDiffFile({ parallel_diff_lines: [] });
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expect(diffsHelper.isSingleViewStyle(noParallelLines)).toBe(true);
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expect(diffsHelper.isSingleViewStyle(emptyParallelLines)).toBe(true);
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});
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it('is true when the file has at least 1 parallel line but no inline lines for any reason', () => {
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const noInlineLines = getDiffFile({ highlighted_diff_lines: undefined });
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const emptyInlineLines = getDiffFile({ highlighted_diff_lines: [] });
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expect(diffsHelper.isSingleViewStyle(noInlineLines)).toBe(true);
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expect(diffsHelper.isSingleViewStyle(emptyInlineLines)).toBe(true);
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});
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it('is true when the file does not have any inline lines or parallel lines for any reason', () => {
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const noLines = getDiffFile({
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highlighted_diff_lines: undefined,
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parallel_diff_lines: undefined,
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});
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const emptyLines = getDiffFile({
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highlighted_diff_lines: [],
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parallel_diff_lines: [],
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});
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expect(diffsHelper.isSingleViewStyle(noLines)).toBe(true);
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expect(diffsHelper.isSingleViewStyle(emptyLines)).toBe(true);
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expect(diffsHelper.isSingleViewStyle()).toBe(true);
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});
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it('is false when the file has both inline and parallel lines', () => {
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expect(diffsHelper.isSingleViewStyle(getDiffFile())).toBe(false);
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});
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});
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describe.each`
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context | inline | parallel | blob | expected
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${'only has inline lines'} | ${['line']} | ${undefined} | ${undefined} | ${true}
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${'only has parallel lines'} | ${undefined} | ${['line']} | ${undefined} | ${true}
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${"doesn't have inline, parallel, or blob"} | ${undefined} | ${undefined} | ${undefined} | ${true}
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${'has blob readable text'} | ${undefined} | ${undefined} | ${{ readable_text: 'text' }} | ${false}
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`('when hasDiff', ({ context, inline, parallel, blob, expected }) => {
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it(`${context}`, () => {
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const diffFile = getDiffFile({
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highlighted_diff_lines: inline,
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parallel_diff_lines: parallel,
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blob,
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});
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expect(diffsHelper.hasDiff(diffFile)).toEqual(expected);
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});
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});
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});
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