* chore(tests): use helpers for the basic drag test in the playground
* chore(tests): miscellaneous test cleanup
* chore: format
* feat(tests): add test that drags out every block from the toolbox
* feat(tests): add RTL version of toolbox drag tests
* chore: lint
* chore(tests): respond to PR feedback
* refactor(tests): Have testSetup accept a URL
Have testSetup accept a URL. Make testFileLocations a dictionary
whose values are URLs, and change the spellings of the keys to
be CONSTANT_CASE.
This allows tests to specify their own URL, or to add a query or
fragment.
* feat(tests): Add getAllBlocks helper
* test: Verify drag blocks works properly
* chore(tests): Reformat comments
Manually reformat comments to comply with styleguide.
* chore: Added test for loading json and interblock deletion
* chore: Added test for loading json and interblock deletion
* chore: Added test for loading json and interblock deletion
* chore: Added test for loading json and interblock deletion
* chore: Added test for loading json and interblock deletion