easysync: add regression tests for #2836, #5214 and #3560

src/tests/frontend/specs/easysync-mutations.js

@@ -137,6 +137,55 @@ describe('easysync', function () {
  ['skip', 1, 1, true],
  ], ['banana\n', 'cabbage\n', 'duffle\n']);
 
+ // #2836, #5214, #3560 regressions
+ runMutationTest(8, ['\n'], [
+ ['remove', 1, 1, '\n'],
+ ['insert', 'c', 0],
+ ], ['c']);
+
+ runMutationTest(9, ['\n'], [
+ ['remove', 1, 1, '\n'],
+ ['insert', 'a'],
+ ['insert', 'c\n', 1],
+ ], ['ac\n']);
+
+ runMutationTest(10, ['\n'], [
+ ['remove', 1, 1, '\n'],
+ ['insert', 'a\n', 1],
+ ['insert', 'c'],
+ ], ['a\n', 'c']);
+
+ runMutationTest(11, ['\n', 'fun\n', '\n'], [
+ ['remove', 1, 1, '\n'],
+ ['skip', 4, 1, false],
+ ['remove', 1, 1, '\n'],
+ ['insert', 'c'],
+ ], ['fun\n', 'c']);
+
+ runMutationTest(12, ['\n', 'fun\n', '\n'], [
+ ['remove', 1, 1, '\n'],
+ ['skip', 3, 0, false],
+ ['remove', 2, 2, '\n\n'],
+ ['insert', 'c'],
+ ], ['func']);
+
+ runMutationTest(13, ['\n', 'fun\n', '\n'], [
+ ['remove', 1, 1, '\n'],
+ ['skip', 3, 0, false],
+ ['remove', 2, 2, '\n\n'],
+ ['insert', 'c'],
+ ['insert', 'a\n', 1],
+ ['insert', 'c'],
+ ], ['funca\n', 'c']);
+
+ runMutationTest(14, ['\n', 'fun\n', '\n'], [
+ ['remove', 1, 1, '\n'],
+ ['skip', 2, 0, false],
+ ['remove', 3, 2, 'n\n\n'],
+ ['insert', 'z'],
+ ], ['fuz']);
+
+
  it('mutatorHasMore', async function () {
  const lines = ['1\n', '2\n', '3\n', '4\n'];
  let mu;