* Fixed a few await issues
* Introduced ModelView as a class member in schemaCompareMainWindow
* Added a few button tests
* Fixed tests
* Add a missing await
* Add a test for SchemaCompareDialog and update the product code with deferred promise
* Update test to verify that button clicked worked
* Addressed comments
* Updated verifyButtonsState to use should instead of console.log
* Schema compare tests for updateSourceAndTarget method
* Merge conflict resolution
* Move resetbutton call before adding them to toolbar
* PR comments- added a buttons interface for readability and created a test class to add test functionality to the orginal class
* Moved interface ButtonState to test code
