Add tests for devmode timestamps

[algochoi]

Adds tests for get/setting timestamp offsets in dev mode. Only confirms that the algod request/response is correct as a sanity check.

Example here: https://github.com/algorand/py-algorand-sdk/pull/468

[winder]

I don't think an integration test adds much safety here beyond whats already been done in the algod tests.

What do you think about adding the path/response unit tests and calling it a day?

For example: https://github.com/algorand/algorand-sdk-testing/pull/245/files

[tzaffi]

I don't think an integration test adds much safety here beyond whats already been done in the algod tests.

What do you think about adding the path/response unit tests and calling it a day?

For example: https://github.com/algorand/algorand-sdk-testing/pull/245/files

I think some kind of E2E in go-algorand or integration test in one repo ought to exist showing that the devmode timestamps are behaving as expected. Maybe this already exists, but I didn't spot such a test in a brief search. Maybe add this test somewhere in this file?

[algochoi]

Alternatively we could implement a full end to end test for devmode APIs for only one SDK (e.g. Python) under the @devmode integration tag and the rest can be tested with the path unit test?

[algochoi]

What do you think about adding the path/response unit tests and calling it a day?

Added path/response tests here: https://github.com/algorand/algorand-sdk-testing/pull/276

[algochoi]

Sounds good, I'll close this for now.