react-diff-view/src/utils/__test__/parse.test.ts

A git diff component to consume the git unified diff output.

import {describe, test, expect} from 'vitest';
import dedent from 'dedent';
import {parseDiff} from '..';

const sample = dedent`
    diff --git a/src/__test__/index.test.jsx b/src/__test__/index.test.jsx
    index 643c2f0..7883597 100644
    --- a/src/__test__/index.test.jsx
    +++ b/src/__test__/index.test.jsx
    @@ -21,3 +21,3 @@ describe('basic test', () => {
         test('App renders correctly', () => {
    -        expect(renderer.create(<App diffText={'deff'} />).toJSON()).toMatchSnapshot();
    +        expect(renderer.create(<App diffText={'diff'} />).toJSON()).toMatchSnapshot();
         });
`;

describe('parseDiff', () => {
    test('ensure test case', () => {
        expect(parseDiff(sample)).toMatchSnapshot();
        expect(parseDiff(`\n${sample}`)).toMatchSnapshot();
    });

    test('insert', async () => {
        const diff = dedent`diff --git a/src/common/utils/languages.js b/src/common/utils/languages.js
            index 1eadcc9..022bfd4 100644
            --- a/src/common/utils/languages.js
            +++ b/src/common/utils/languages.js
            @@ -155,5 +155,6 @@
             const genericExtension = new Set(['.tpl', '.tmp']);
             export const detectLanguage = filename => {
            +    // 仅仅是为了处理特殊情况，特殊情况应该已经处理完毕
                 if (!filename) {
                     return 'text';
                 }
        `;
        expect(parseDiff(diff, {nearbySequences: 'zip'})).toMatchSnapshot();
    });

    test('unidiff', () => {
        const diff = dedent`--- x.js 2002-02-21 23:30:39.942229878 -0800
            +++ x.js 2002-02-21 23:30:50.442260588 -0800
            @@ -155,5 +155,6 @@
             const genericExtension = new Set(['.tpl', '.tmp']);
             export const detectLanguage = filename => {
            +    // 仅仅是为了处理特殊情况，特殊情况应该已经处理完毕
                 if (!filename) {
                     return 'text';
                 }
        `;
        expect(parseDiff(diff, {nearbySequences: 'zip'})).toMatchSnapshot();
    });

    test('rename', () => {
        const diff = dedent`
            diff --git a/src/error/components/ErrorBase.jsx b/src/components/ErrorPages/ErrorBase.jsx
            similarity index 100%
            rename from src/error/components/ErrorBase.jsx
            rename to src/components/ErrorPages/ErrorBase.jsx
        `;
        expect(parseDiff(diff, {nearbySequences: 'zip'})).toMatchSnapshot();
    });

    test('no newline at end of file', () => {
        const diff = dedent`
            diff --git a/README.md b/README.md
            index 36f6985..9acdf95 100644
            --- a/README.md
            +++ b/README.md
            @@ -1,2 +1,2 @@
             iiiiiiiiiiiiiiiiiiiiii:WQiiiiiiiiiiiiejj
            -dsds
            \\ No newline at end of file
            +dsdsds
            \\ No newline at end of file
        `;
        expect(parseDiff(diff, {nearbySequences: 'zip'})).toMatchSnapshot();
    });
});