Re: [PATCH 1/7] test-lib: add a "test_expect_todo", similar to "test_expect_failure"

[Junio C Hamano <gitster@pobox.com>]

Derrick Stolee <derrickstolee@github.com> writes:

> The thing I'm hoping to see from a final version is that a top-level
> helper like test_expect_todo will expect at least one test_todo
> helper to be executed inside of the test (perhaps communicated by
> setting a special GIT_TEST_* environment variable?) and if any of

I was hoping that we can do without test_expect_todo.
test_expect_success can turn itself into test_expect_todo when it
sees test_todo is invoked even once in it.  And Phillip's outline
actually implements the idea, if I am not mistaken.

> the test_todo lines change from fail to pass, then that is
> communicated as a _failure_ from CI's perspective. Let us discover
> if we have accidentally "fixed" any of these test cases and update
> the tests accordingly.

In other words, we do not want to lose the "TODO fixed" we have been
getting out of test_expect_failure, which I agree with.  I am not
sure if Phillip's outline had that feature.

> I can predict writing a test case with multiple test_todo lines
> that need to be updated to drop the test_todo helpers one-by-one
> as a change is being introduced.

Yes.