Add the ability to capture Coverage information
I would like to periodically capture coverage information. The reason is because I would like to be able to pair test methods with the lines executed for that test method. The question I would like to answer is "If I modify file A on line B, which tests should I execute?"
I've attached a patch that returns a snapshot of the current coverage information. It means that I can grab coverage information before and after each test case, then calculate which lines of code a particular test executed.
Updated by mame (Yusuke Endoh) over 5 years ago
Sounds good to me. I'm positive to import the feature.
I'd like to hear any opinion from the direct users of the feature, such as the authors of coverage measurement frontend tool (such as simplecov) or testing frameworks.
The question I would like to answer is "If I modify file A on line B, which tests should I execute?"
FYI: I think it is called "regression test selection."
Yusuke Endoh firstname.lastname@example.org
Updated by tenderlovemaking (Aaron Patterson) over 5 years ago
Sorry for leaving this ticket and thank you for commenting and creating a proof-of-concept.
No problem. I'm really excited about this feature (sorry if I seem impatient).
Aaron, could you commit your patch?
Yes, I'll commit it.
Updated by Anonymous over 5 years ago
- Status changed from Open to Closed
- % Done changed from 0 to 100
Applied in changeset r49589.
ext/coverage/coverage.c: Add Coverage.peek_result. Allows you to
capture coverage information without stopping the coverage tool.
[ruby-core:67940] [Feature #10816]
test/coverage/test_coverage.rb: test for change.