Improve coverage and changelog

Author: dplewis

CHANGELOG.md

@@ -7,10 +7,12 @@
 [Full Changelog](https://github.com/parse-community/Parse-SDK-JS/compare/2.18.0...2.19.0)
 
 **Features**
-- New error codes (210 and 211) for MFA ([#1268](https://github.com/parse-community/Parse-SDK-JS/pull/1268))
+- New error code 210 (MFA_ERROR) ([#1268](https://github.com/parse-community/Parse-SDK-JS/pull/1268))
+- New error code 211 (MFA_TOKEN_REQUIRED) ([#1268](https://github.com/parse-community/Parse-SDK-JS/pull/1268))
+- New error code 161 (FILE_DELETE_UNNAMED_ERROR) ([#1257](https://github.com/parse-community/Parse-SDK-JS/pull/1257))
 
 **Improvements**
-- Parse.File.destroy error message ([#1257](https://github.com/parse-community/Parse-SDK-JS/pull/1257))
+- Parse.File.destroy without name error message ([#1257](https://github.com/parse-community/Parse-SDK-JS/pull/1257))
 
 **Fixes**
 - Remove unnecessary object reference and comment from AddUniqueOp ([#1253](https://github.com/parse-community/Parse-SDK-JS/pull/1253))

src/__tests__/ParseQuery-test.js

@@ -2801,6 +2801,9 @@ describe('ParseQuery', () => {
       aggregate: () => {},
     });
     const query = new ParseQuery('TestCancel');
+    expect(query._xhrRequest).toBeDefined();
+    expect(query._xhrRequest.task).toBe(null);
+    expect(query._xhrRequest.onchange()).toBeUndefined();
 
     jest.spyOn(mockRequestTask, 'abort');
     query.cancel();