RE: [PATCH] t3200: don't grep for `strerror()` string

> On July 18, 2020 5:49 AM, Martin Ågren Wrote:
> > In 6b7093064a ("t3200: test for specific errors", 2020-06-15), we
> > learned to grep stderr to ensure that the failing `git branch`
> > invocations fail for the right reason. In two of these tests, we grep
> > for "File exists", expecting the string to show up there since
> > config.c calls `error_errno()`, which ends up including `strerror(errno)` in
> the error message.
> >
> > But as we saw in 4605a73073 ("t1091: don't grep for `strerror()`
> > string", 2020-03-08), there exists at least one implementation where
> > `strerror()` yields a slightly different string than the one we're
> > grepping for. In particular, these tests fail on the NonStop platform.
> >
> > Similar to 4605a73073, grep for the beginning of the string instead to
> > avoid relying on `strerror()` behavior.
> >
> > Reported-by: Randall S. Becker <rsbecker@nexbridge.com>
> > Signed-off-by: Martin Ågren <martin.agren@gmail.com>
> > ---
> >  Hi Randall,
> >
> >  Does this fix the test for you?
> >
> >  Martin
> >
> >  t/t3200-branch.sh | 4 ++--
> >  1 file changed, 2 insertions(+), 2 deletions(-)
> >
> > diff --git a/t/t3200-branch.sh b/t/t3200-branch.sh index
> > b6aa04bbec..4c0734157b 100755
> > --- a/t/t3200-branch.sh
> > +++ b/t/t3200-branch.sh
> > @@ -870,7 +870,7 @@ test_expect_success '--set-upstream-to fails on
> > locked config' '
> >  	>.git/config.lock &&
> >  	git branch locked &&
> >  	test_must_fail git branch --set-upstream-to locked 2>err &&
> > -	test_i18ngrep "could not lock config file .git/config: File exists" err
> > +	test_i18ngrep "could not lock config file .git/config" err
> >  '
> >
> >  test_expect_success 'use --set-upstream-to modify HEAD' '
> > @@ -901,7 +901,7 @@ test_expect_success '--unset-upstream should fail
> > if config is locked' '
> >  	git branch --set-upstream-to locked &&
> >  	>.git/config.lock &&
> >  	test_must_fail git branch --unset-upstream 2>err &&
> > -	test_i18ngrep "could not lock config file .git/config: File exists" err
> > +	test_i18ngrep "could not lock config file .git/config" err
> >  '
> >
> >  test_expect_success 'test --unset-upstream on HEAD' '
> 
> It should work, yes. You could go as far as the ':' if you were worried about
> the path of the .git/config file.