diff options
Diffstat (limited to 'spec/frontend/ide/lib/diff')
-rw-r--r-- | spec/frontend/ide/lib/diff/diff_spec.js | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/spec/frontend/ide/lib/diff/diff_spec.js b/spec/frontend/ide/lib/diff/diff_spec.js new file mode 100644 index 00000000000..57f3ac3d365 --- /dev/null +++ b/spec/frontend/ide/lib/diff/diff_spec.js @@ -0,0 +1,80 @@ +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); + }); + }); +}); |