message: Correct one unit test
diff: @@ -1419,7 +1419,9 @@ QUnit.test("MatrixDropdownColumn add/remove serialization properties", function
  QUnit.test("MatrixDropdownColumn cellType property, choices", function (assert) {
  var prop = Serializer.findProperty("matrixdropdowncolumn", "cellType");
  assert.ok(prop, "Property is here");
  - assert.equal(prop.choices.length, 10, "There are 10 cell types by default");
  + let counter = 1; //default
  + for(let key in matrixDropdownColumnTypes) counter ++;
  + assert.equal(prop.choices.length, counter, "get cell types from matrixDropdownColumnTypes");
  assert.equal(prop.choices[0], "default", "The first value is default");
  assert.equal(prop.choices[1], "dropdown", "The second value is default");
  });
  