test: account declaration test with katana

[ICavlek]

Added tests that check Beerus functions used for account declaration with katana node

• Restructured common module
• Added katana node inside the common module
• Created account declaration workflow test

[sergey-melnychuk]

Sorry for the delay, I need a bit more time to understand what is happening in the tests and what exact cases they protect us from.

At this point it seems like a complicated way to verify request-response JSON roundtrip :)

[ICavlek]

Sorry for the delay, I need a bit more time to understand what is happening in the tests and what exact cases they protect us from.

At this point it seems like a complicated way to verify request-response JSON roundtrip :)

Inside the account_declare.rs is a starkli_declare_workflow_test. If a user would call starkli declare <contract.json> file, these functions would be called on a starknet node. Instead of a live starknet node, I have created a mock node where we can control what kind of response can come.
Additional test cases are for further verification.

For next step, I was thinking of same starkli_declare_workflow_test, but instead of on mock starknet node, we would be starting katana and would query same requests on development node in this test environment. This would be done in scope of this issue:
#732

[sergey-melnychuk]

Instead of a live starknet node, I have created a mock node where we can control what kind of response can come.

As far as I recall, the goal was to check the integration with the live testnet node, to make sure that production workflow can run through Beerus. If I'm being completely honest, I don't see how mock-based tests check this integration.

For next step, I was thinking of same starkli_declare_workflow_test, but instead of on mock starknet node, we would be starting katana and would query same requests on development node in this test environment.

This should have been the only step, but against live testnet node. We will still need to run the tests against live node, even if tests against mocks and/or katana succeed. And if we have tests that run successfull against the live node, I personally consider extra testing against mocks and/or katana as redundant.

[sergey-melnychuk]

Another thought on mock tests: #730 (comment)

They might be very useful if we take PRs from external contributors into account.

[sergey-melnychuk]

LGTM % please extract CLOBs to files before merging