TooManyTestSteps applies to test-templates but shouldn't

[joelwhitehouse]

Request

I'd like to request a new linter rule. Currently the rule TooManyTestSteps applies to regular Test Cases as well as test-template test cases; I'd like to restrict TooManyTestSteps to apply only to regular Test Cases and a new, separate rule TooManyTemplateDataRows to apply to only to test-templates.

Reasoning

A new rule would be more consistent with the Robot Framework documentation. When a regular test case is too long, it has "too many steps", but test-templates are different. According to the User Guide section on test-templates, a test-template body consists of data rows, not "steps", so the TooManyTestSteps rule technically doesn't apply to a templated test case. A separate TooManyTemplateDataRows rule for templated test cases would be more consistent with existing RobotFramework documentation.

Additionally, it may be desirable to restrict templated test cases to a different length than regular test cases. When regular test cases have too many steps, they're dense and unreadable. But the bare, tabular format of the test-template syntax can contain many more data rows and still look clean. A separate rule would give developers the option to keep Test Cases short and sweet while allowing templates to breathe a little bit.

Defaults

Since TooManyTestSteps defaults to 10, a TooManyTemplateDataRows rule could sensibly default to 15.