Adding some tests for is_valid_signature

[Gerson2102]

• issue [feat] test account valid signature  #113
• follows contribution guide
• code change includes tests
• breaking change

This PR is adding some tests for the is_valid_signature function. Still work in progress.

[Gerson2102]

For the empty signature case. I'm getting this as a value when I run the test:

[FAIL] tests::test_account::test_empty_signature

Failure data:
    0x696e76616c6964207369676e6174757265 ('invalid signature')

And in the test I'm comparing the value to 'invalid signature' but it seems that is not catching it. I dont know how that works.

[Gerson2102]

The test_is_not_valid_signature is working fine. But I dont know how to do a test that checks that the signature is working fine. Or the function is working as expected. Is there any resource that could be shared with me to see how to do that?

[trbutler4]

Contributor

thats fine

[trbutler4]

thank you