WIP: Tests: I2PControl: expanded unit-tests

Expands on data and parser unit-tests. Adds service + session unit-tests.

Brings coverage for client/api/i2p_control/data.cc to 100% function / 91+% line coverage.

Brings coverage for client/api/i2p_control/server.cc to 100% function / 85+% line coverage.

Brings coverage for client/api/i2p_control/session.cc to 95% function / 59+% line coverage.

Remaining uncovered session function requires a timer to expire.

changed the description

https://gitlab.com/kovri-project/kovri-docs/blob/master/i18n/en/developer_guide.md#unit-test-writing

https://gitlab.com/kovri-project/kovri-docs/blob/master/i18n/en/developer_guide.md#unit-test-writing

I opened an MR for integration test support, and will start working on refactoring this test based on the new section of the dev guide.

marked as a Work In Progress

We'll reopen this request after the WIP is complete. Ping here when your branch is 100% complete and ready to be merged with absolutely minimal-needed review.

closed