[FEATURE] std extension exec tests

[f3l1x98]

User Story

1. As a {developer}
2. I want {to have tests to ensure that my new code does not break any existing code (without my knowledge)}
3. So that {I can publish better code}

User Acceptance Criteria

• Add test to the exec part of the std extension (Std extension exec tests #456)

Definitions of Done

• A PR has been opened and accepted
• All user acceptance criteria are met
• All tests are passing