Test implementations

[biancamacias]

Issue

Currently, there are no unit tests for any implementation. Adding testing by mocking the emulator and/or grpc_cli will help ensure that the code runs as expected

Expected Behavior

when running the unit tests, switching the flag should result in using the correct implementation (either java client or JDBC)

Next Steps

• [ ] look into Mockito to mock grpc or emulator
• [ ] create unit tests to verify expected behavior
• [ ] this issue will become more detailed as the test files are pushed

[ngcgarcia]

Resolved with #21, #28, and #45.