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import createFileDiff from '~/ide/lib/create_file_diff';
import { commitActionTypes } from '~/ide/constants';
import {
createUpdatedFile,
createNewFile,
createMovedFile,
createDeletedFile,
} from '../file_helpers';
const PATH = 'test/numbers.md';
const PATH_FOO = 'test/foo.md';
const TEXT_LINE_COUNT = 100;
const TEXT = Array(TEXT_LINE_COUNT)
.fill(0)
.map((_, idx) => `${idx + 1}`)
.join('\n');
const spliceLines = (content, lineNumber, deleteCount = 0, newLines = []) => {
const lines = content.split('\n');
lines.splice(lineNumber, deleteCount, ...newLines);
return lines.join('\n');
};
const mapLines = (content, mapFn) => content.split('\n').map(mapFn).join('\n');
describe('IDE lib/create_file_diff', () => {
it('returns empty string with "garbage" action', () => {
const result = createFileDiff(createNewFile(PATH, ''), 'garbage');
expect(result).toBe('');
});
it('preserves ending whitespace in file', () => {
const oldContent = spliceLines(TEXT, 99, 1, ['100 ']);
const newContent = spliceLines(oldContent, 99, 0, ['Lorem', 'Ipsum']);
const expected = `
99
+Lorem
+Ipsum
100 `;
const result = createFileDiff(
createUpdatedFile(PATH, oldContent, newContent),
commitActionTypes.update,
);
expect(result).toContain(expected);
});
describe('with "create" action', () => {
const expectedHead = `diff --git "a/${PATH}" "b/${PATH}"
new file mode 100644`;
const expectedChunkHead = (lineCount) => `--- /dev/null
+++ b/${PATH}
@@ -0,0 +1,${lineCount} @@`;
it('with empty file, does not include diff body', () => {
const result = createFileDiff(createNewFile(PATH, ''), commitActionTypes.create);
expect(result).toBe(`${expectedHead}\n`);
});
it('with single line, includes diff body', () => {
const result = createFileDiff(createNewFile(PATH, '\n'), commitActionTypes.create);
expect(result).toBe(`${expectedHead}
${expectedChunkHead(1)}
+
`);
});
it('without newline, includes no newline comment', () => {
const result = createFileDiff(createNewFile(PATH, 'Lorem ipsum'), commitActionTypes.create);
expect(result).toBe(`${expectedHead}
${expectedChunkHead(1)}
+Lorem ipsum
\\ No newline at end of file
`);
});
it('with content, includes diff body', () => {
const content = `${TEXT}\n`;
const result = createFileDiff(createNewFile(PATH, content), commitActionTypes.create);
expect(result).toBe(`${expectedHead}
${expectedChunkHead(TEXT_LINE_COUNT)}
${mapLines(TEXT, (line) => `+${line}`)}
`);
});
});
describe('with "delete" action', () => {
const expectedHead = `diff --git "a/${PATH}" "b/${PATH}"
deleted file mode 100644`;
const expectedChunkHead = (lineCount) => `--- a/${PATH}
+++ /dev/null
@@ -1,${lineCount} +0,0 @@`;
it('with empty file, does not include diff body', () => {
const result = createFileDiff(createDeletedFile(PATH, ''), commitActionTypes.delete);
expect(result).toBe(`${expectedHead}\n`);
});
it('with content, includes diff body', () => {
const content = `${TEXT}\n`;
const result = createFileDiff(createDeletedFile(PATH, content), commitActionTypes.delete);
expect(result).toBe(`${expectedHead}
${expectedChunkHead(TEXT_LINE_COUNT)}
${mapLines(TEXT, (line) => `-${line}`)}
`);
});
});
describe('with "update" action', () => {
it('includes diff body', () => {
const oldContent = `${TEXT}\n`;
const newContent = `${spliceLines(TEXT, 50, 3, ['Lorem'])}\n`;
const result = createFileDiff(
createUpdatedFile(PATH, oldContent, newContent),
commitActionTypes.update,
);
expect(result).toBe(`diff --git "a/${PATH}" "b/${PATH}"
--- a/${PATH}
+++ b/${PATH}
@@ -47,11 +47,9 @@
47
48
49
50
-51
-52
-53
+Lorem
54
55
56
57
`);
});
});
describe('with "move" action', () => {
it('returns rename head', () => {
const result = createFileDiff(createMovedFile(PATH, PATH_FOO), commitActionTypes.move);
expect(result).toBe(`diff --git "a/${PATH_FOO}" "b/${PATH}"
rename from ${PATH_FOO}
rename to ${PATH}
`);
});
});
});
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