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Re: [PATCH v2 1/3] Add tests for describe with --work-tree

From
Duy Nguyen <pclouds@gmail.com>
Date
Jan 28, 2019, 10:06 UTC
Message-ID
<20190128100659.GA6257@ash>
In-Reply-To
<CA+xP2SbLwmeWpqmjCiqojra5Mwrbok7sjvUsvCsaAo6XsWBbtA@mail.gmail.com>
On Sun, Jan 27, 2019 at 08:13:51AM +0100, Sebastian Staudt wrote:
Show 51 quoted lines
> Am So., 27. Jan. 2019 um 01:07 Uhr schrieb Duy Nguyen <pclouds@gmail.com>:
> >
> > On Sun, Jan 27, 2019 at 3:51 AM Sebastian Staudt <koraktor@gmail.com> wrote:
> > >
> > > The dirty ones are already passing, but just because describe is comparing
> > > with the wrong working tree.
> > >
> > > Signed-off-by: Sebastian Staudt <koraktor@gmail.com>
> > > ---
> > >  t/t6120-describe.sh | 24 ++++++++++++++++++++++++
> > >  1 file changed, 24 insertions(+)
> > >
> > > diff --git a/t/t6120-describe.sh b/t/t6120-describe.sh
> > > index d639d94696..9a6bd1541f 100755
> > > --- a/t/t6120-describe.sh
> > > +++ b/t/t6120-describe.sh
> > > @@ -28,6 +28,24 @@ check_describe () {
> > >         '
> > >  }
> > >
> > > +check_describe_worktree () {
> > > +  cd "$TEST_DIRECTORY"
> >
> > Strange alignment. We normally do it in a subshell...
> 
> Sure, will fix this.
> 
> >
> > > +       expect="$1"
> > > +       shift
> > > +       R=$(git --git-dir "$TRASH_DIRECTORY/.git" --work-tree "$TRASH_DIRECTORY" describe "$@" 2>err.actual)
> >
> > These commands should be executed inside test_expect_success, not
> > outside. And you need to chain commands with && to make sure if
> > something breaks, then the whole test will fai.
> >
> > If it's too ugly to generate test_expect_success with a shell
> > function, then just write a shell function that "describe" and compare
> > (i.e. the test body). Then you can write something like this later
> >
> > test_expect_sucesss 'describe with --worktree foo' '
> >         check_describe_worktree foo
> > '
> >
> > and check_describe_worktree can now do
> >
> > ( cd "$TEST_DIRECTORY" && .... )
> >
> >
> 
> My function is a modified version of check_describe().

Whoa. That function is 12 years old! I think our style has evolved a bit since then.

Show 6 quoted lines
> Which does the same thing. I‘m not really experienced in Shell
> programming, so I didn‘t see a cleaner way.
>
> But having the cd commands in the && chain looks broken as it would
> break the following tests when one test fails and the code was executed
> in the wrong directory afterwards.

I mean chaining within a test. This is to make sure any failure triggers the test failure (as it should, if some command is expected to fail, we have other ways to catch it).

I would start with something simple, not using shell function at all. Something like this as an example (I added run_describe() because that "git" command becomes too long). Have a look at the "do's and don'ts" in t/README too.

-- 8< --
diff --git a/t/t6120-describe.sh b/t/t6120-describe.sh
index d639d94696..646bedf4e9 100755
--- a/t/t6120-describe.sh
+++ b/t/t6120-describe.sh
@@ -28,6 +28,10 @@ check_describe () {
 	'
 }
 
+run_describe() {
+	git --git-dir "$TRASH_DIRECTORY/.git" --work-tree "$TRASH_DIRECTORY" describe "$@"
+}
+
 test_expect_success setup '
 
 	test_tick &&
@@ -145,6 +149,14 @@ check_describe A-* HEAD
 
 check_describe "A-*[0-9a-f]" --dirty
 
+test_expect_success 'describe with --work-tree --dirty' '
+	(
+		cd "$TEST_DIRECTORY" &&
+		run_describe --dirty 2>err.actual >actual &&
+		grep "^A-.*[0-9a-f]$" actual
+	)
+'
+
 test_expect_success 'set-up dirty work tree' '
 	echo >>file
 '
-- 8< --

BTW, careful about _success or _failure. You need to make sure bisect
is not broken. If you add a test to confirm a broken case then it
should be test_expect_failure (and the test suite will pass). Then
when you fix it you can flip it to test_expect_success.
--
Duy
Previous: Sebastian StaudtNext: Junio C Hamano
Message 10 of 11 in “Add tests for describe with --work-tree”
  1. 1/3 Add tests for describe with --work-treeSebastian Staudt, Jan 26, 2019
  2. 2/3 Setup working tree in describeSebastian Staudt, Jan 26, 2019
  3. Duy NguyenJan 27, 2019
  4. Sebastian StaudtJan 27, 2019
  5. 3/3 Add test for describe with a bare repositorySebastian Staudt, Jan 26, 2019
  6. Duy NguyenJan 27, 2019
  7. Sebastian StaudtJan 27, 2019
  8. Duy NguyenJan 27, 2019
  9. Sebastian StaudtJan 27, 2019
  10. Duy NguyenJan 28, 2019
  11. Junio C HamanoJan 30, 2019

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