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import { computeDiff } from '~/ide/lib/diff/diff';
describe('Multi-file editor library diff calculator', () => {
describe('computeDiff', () => {
it('returns empty array if no changes', () => {
const diff = computeDiff('123', '123');
expect(diff).toEqual([]);
});
describe('modified', () => {
it('', () => {
const diff = computeDiff('123', '1234')[0];
expect(diff.added).toBeTruthy();
expect(diff.modified).toBeTruthy();
expect(diff.removed).toBeUndefined();
});
it('', () => {
const diff = computeDiff('123\n123\n123', '123\n1234\n123')[0];
expect(diff.added).toBeTruthy();
expect(diff.modified).toBeTruthy();
expect(diff.removed).toBeUndefined();
expect(diff.lineNumber).toBe(2);
});
});
describe('added', () => {
it('', () => {
const diff = computeDiff('123', '123\n123')[0];
expect(diff.added).toBeTruthy();
expect(diff.modified).toBeUndefined();
expect(diff.removed).toBeUndefined();
});
it('', () => {
const diff = computeDiff('123\n123\n123', '123\n123\n1234\n123')[0];
expect(diff.added).toBeTruthy();
expect(diff.modified).toBeUndefined();
expect(diff.removed).toBeUndefined();
expect(diff.lineNumber).toBe(3);
});
});
describe('removed', () => {
it('', () => {
const diff = computeDiff('123', '')[0];
expect(diff.added).toBeUndefined();
expect(diff.modified).toBeUndefined();
expect(diff.removed).toBeTruthy();
});
it('', () => {
const diff = computeDiff('123\n123\n123', '123\n123')[0];
expect(diff.added).toBeUndefined();
expect(diff.modified).toBeTruthy();
expect(diff.removed).toBeTruthy();
expect(diff.lineNumber).toBe(2);
});
});
it('includes line number of change', () => {
const diff = computeDiff('123', '')[0];
expect(diff.lineNumber).toBe(1);
});
it('includes end line number of change', () => {
const diff = computeDiff('123', '')[0];
expect(diff.endLineNumber).toBe(1);
});
});
});
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