| Message ID | 0532847787dfd48fbe4b41a4a7d2783748f3bd7f.1573595985.git.liu.denton@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | t5520: various test cleanup | expand |
Denton Liu <liu.denton@gmail.com> writes: > +# Tests that its two parameters refer to the same revision, or if '!' is > +# provided first, that its other two parameters refer to different > +# revisions. > test_cmp_rev () { > + local op wrong_result > + op='=' > + wrong_result='different' > + if test $# -ge 1 && test "x$1" = 'x!' > + then > + op='!=' > + wrong_result='the same' > + shift > + fi I'd prefer local op wrong_result if test $# -ge 1 && test "x$1" = 'x!' then op='!=' wrong_result='the same' shift else op='=' wrong_result='different' fi that clarifies that the variants with and without '!' are equals, as opposed to the form with '!' is an afterthought exception. On the other hand, if we want to insist that the form without '!' is the norm, then local op='=' wrong_result='different' if test $# -ge 1 && test "x$1" = 'x!' then op='!=' wrong_result='the same' shift fi would be shorter (yes, I made sure we already use assignment to a variable on the same line where it is declared "local"; we used to avoid "local" that is outside POSIX so I want to make sure our use is safe). I'll queue the patches as-is, but if enough people agree with me (on either variants), I'd locally amend to make it so (i.e. no need to resend only for this change). Thanks.
Hi Junio, On Wed, Nov 13, 2019 at 10:57:34AM +0900, Junio C Hamano wrote: > Denton Liu <liu.denton@gmail.com> writes: > > > +# Tests that its two parameters refer to the same revision, or if '!' is > > +# provided first, that its other two parameters refer to different > > +# revisions. > > test_cmp_rev () { > > + local op wrong_result > > + op='=' > > + wrong_result='different' > > + if test $# -ge 1 && test "x$1" = 'x!' > > + then > > + op='!=' > > + wrong_result='the same' > > + shift > > + fi > On the other hand, if we want to insist that the form without '!' is > the norm, then > > local op='=' wrong_result='different' > > if test $# -ge 1 && test "x$1" = 'x!' > then > op='!=' > wrong_result='the same' > shift > fi > > would be shorter (yes, I made sure we already use assignment to a > variable on the same line where it is declared "local"; we used to > avoid "local" that is outside POSIX so I want to make sure our use > is safe). I'd prefer this form. Unless anyone else objects, you can squash it in. You bring up a good point about us _already_ using inline assignments with `local`, though. In fact, it looks like we already test for this in the very first test case of t0000 so I comfortable with this change. However, I'd feel _more_ comfortable with this change if we also queued the following patch. (This change can either live on a separate branch or become the first patch in this series.) -- >8 -- Subject: [PATCH] t0000: test multiple local assignment According to POSIX enhancement request '0000767: Add built-in "local"'[1], dash only allows one variable in a local definition; it permits assignment though it doesn't document that clearly. however, this isn't true since t0000 still passes with this patch applied on dash 0.5.10.2. Needless to say, since `local` isn't POSIX standardized, it is not exactly clear what `local` entails on different versions of different shells. We currently already have many instances of multiple local assignments in our codebase. Ensure that this is actually supported by explicitly testing that it is sane. [1]: http://austingroupbugs.net/bug_view_page.php?bug_id=767 Signed-off-by: Denton Liu <liu.denton@gmail.com> --- t/t0000-basic.sh | 15 ++++++++------- 1 file changed, 8 insertions(+), 7 deletions(-) diff --git a/t/t0000-basic.sh b/t/t0000-basic.sh index 4d3f7ba295..a4af2342d1 100755 --- a/t/t0000-basic.sh +++ b/t/t0000-basic.sh @@ -20,9 +20,9 @@ modification *should* take notice and update the test vectors here. . ./test-lib.sh -try_local_x () { - local x="local" && - echo "$x" +try_local_xy () { + local x="local" y="alsolocal" && + echo "$x $y" } # Check whether the shell supports the "local" keyword. "local" is not @@ -35,11 +35,12 @@ try_local_x () { # relying on "local". test_expect_success 'verify that the running shell supports "local"' ' x="notlocal" && - echo "local" >expected1 && - try_local_x >actual1 && + y="alsonotlocal" && + echo "local alsolocal" >expected1 && + try_local_xy >actual1 && test_cmp expected1 actual1 && - echo "notlocal" >expected2 && - echo "$x" >actual2 && + echo "notlocal alsonotlocal" >expected2 && + echo "$x $y" >actual2 && test_cmp expected2 actual2 '
diff --git a/t/t2400-worktree-add.sh b/t/t2400-worktree-add.sh index e819ba741e..52d476979b 100755 --- a/t/t2400-worktree-add.sh +++ b/t/t2400-worktree-add.sh @@ -438,7 +438,7 @@ test_expect_success 'git worktree add does not match remote' ' cd foo && test_must_fail git config "branch.foo.remote" && test_must_fail git config "branch.foo.merge" && - ! test_cmp_rev refs/remotes/repo_a/foo refs/heads/foo + test_cmp_rev ! refs/remotes/repo_a/foo refs/heads/foo ) ' @@ -483,7 +483,7 @@ test_expect_success 'git worktree --no-guess-remote option overrides config' ' cd foo && test_must_fail git config "branch.foo.remote" && test_must_fail git config "branch.foo.merge" && - ! test_cmp_rev refs/remotes/repo_a/foo refs/heads/foo + test_cmp_rev ! refs/remotes/repo_a/foo refs/heads/foo ) ' diff --git a/t/t3400-rebase.sh b/t/t3400-rebase.sh index ab18ac5f28..f267f6cd54 100755 --- a/t/t3400-rebase.sh +++ b/t/t3400-rebase.sh @@ -64,7 +64,7 @@ test_expect_success 'rebase sets ORIG_HEAD to pre-rebase state' ' pre="$(git rev-parse --verify HEAD)" && git rebase master && test_cmp_rev "$pre" ORIG_HEAD && - ! test_cmp_rev "$pre" HEAD + test_cmp_rev ! "$pre" HEAD ' test_expect_success 'rebase, with <onto> and <upstream> specified as :/quuxery' ' diff --git a/t/t3421-rebase-topology-linear.sh b/t/t3421-rebase-topology-linear.sh index b847064f91..325072b0a3 100755 --- a/t/t3421-rebase-topology-linear.sh +++ b/t/t3421-rebase-topology-linear.sh @@ -61,7 +61,7 @@ test_run_rebase () { test_expect_$result "rebase $* -f rewrites even if upstream is an ancestor" " reset_rebase && git rebase $* -f b e && - ! test_cmp_rev e HEAD && + test_cmp_rev ! e HEAD && test_cmp_rev b HEAD~2 && test_linear_range 'd e' b.. " @@ -78,7 +78,7 @@ test_run_rebase () { test_expect_$result "rebase $* -f rewrites even if remote upstream is an ancestor" " reset_rebase && git rebase $* -f branch-b branch-e && - ! test_cmp_rev branch-e origin/branch-e && + test_cmp_rev ! branch-e origin/branch-e && test_cmp_rev branch-b HEAD~2 && test_linear_range 'd e' branch-b.. " @@ -368,7 +368,7 @@ test_run_rebase () { test_expect_$result "rebase $* -f --root on linear history causes re-write" " reset_rebase && git rebase $* -f --root c && - ! test_cmp_rev a HEAD~2 && + test_cmp_rev ! a HEAD~2 && test_linear_range 'a b c' HEAD " } diff --git a/t/t3430-rebase-merges.sh b/t/t3430-rebase-merges.sh index 9efcf4808a..abbdc26b1b 100755 --- a/t/t3430-rebase-merges.sh +++ b/t/t3430-rebase-merges.sh @@ -346,7 +346,7 @@ test_expect_success 'A root commit can be a cousin, treat it that way' ' git merge --allow-unrelated-histories khnum && test_tick && git rebase -f -r HEAD^ && - ! test_cmp_rev HEAD^2 khnum && + test_cmp_rev ! HEAD^2 khnum && test_cmp_graph HEAD^.. <<-\EOF && * Merge branch '\''khnum'\'' into asherah |\ diff --git a/t/t3432-rebase-fast-forward.sh b/t/t3432-rebase-fast-forward.sh index 034ffc7e76..92f95b57da 100755 --- a/t/t3432-rebase-fast-forward.sh +++ b/t/t3432-rebase-fast-forward.sh @@ -64,7 +64,7 @@ test_rebase_same_head_ () { test_cmp_rev \$oldhead \$newhead elif test $cmp = diff then - ! test_cmp_rev \$oldhead \$newhead + test_cmp_rev ! \$oldhead \$newhead fi " } diff --git a/t/t3501-revert-cherry-pick.sh b/t/t3501-revert-cherry-pick.sh index d1c68af8c5..1c51a9131d 100755 --- a/t/t3501-revert-cherry-pick.sh +++ b/t/t3501-revert-cherry-pick.sh @@ -106,7 +106,7 @@ test_expect_success 'cherry-pick on unborn branch' ' rm -rf * && git cherry-pick initial && git diff --quiet initial && - ! test_cmp_rev initial HEAD + test_cmp_rev ! initial HEAD ' test_expect_success 'cherry-pick "-" to pick from previous branch' ' diff --git a/t/t3508-cherry-pick-many-commits.sh b/t/t3508-cherry-pick-many-commits.sh index b457333e18..23070a7b73 100755 --- a/t/t3508-cherry-pick-many-commits.sh +++ b/t/t3508-cherry-pick-many-commits.sh @@ -5,7 +5,7 @@ test_description='test cherry-picking many commits' . ./test-lib.sh check_head_differs_from() { - ! test_cmp_rev HEAD "$1" + test_cmp_rev ! HEAD "$1" } check_head_equals() { diff --git a/t/test-lib-functions.sh b/t/test-lib-functions.sh index b299ecc326..15f4c96777 100644 --- a/t/test-lib-functions.sh +++ b/t/test-lib-functions.sh @@ -1012,19 +1012,31 @@ test_must_be_empty () { fi } -# Tests that its two parameters refer to the same revision +# Tests that its two parameters refer to the same revision, or if '!' is +# provided first, that its other two parameters refer to different +# revisions. test_cmp_rev () { + local op wrong_result + op='=' + wrong_result='different' + if test $# -ge 1 && test "x$1" = 'x!' + then + op='!=' + wrong_result='the same' + shift + fi if test $# != 2 then error "bug in the test script: test_cmp_rev requires two revisions, but got $#" else local r1 r2 r1=$(git rev-parse --verify "$1") && - r2=$(git rev-parse --verify "$2") && - if test "$r1" != "$r2" + r2=$(git rev-parse --verify "$2") || return 1 + + if ! test "$r1" "$op" "$r2" then cat >&4 <<-EOF - error: two revisions point to different objects: + error: two revisions point to $wrong_result objects: '$1': $r1 '$2': $r2 EOF
In the case where we are using test_cmp_rev() to report not-equals, we write `! test_cmp_rev`. However, since test_cmp_rev() contains r1=$(git rev-parse --verify "$1") && r2=$(git rev-parse --verify "$2") && `! test_cmp_rev` will succeed if any of the rev-parses fail. This behavior is not desired. We want the rev-parses to _always_ be successful. Rewrite test_cmp_rev() to optionally accept "!" as the first argument to do a not-equals comparison. Rewrite `! test_cmp_rev` to `test_cmp_rev !` in all tests to take advantage of this new functionality. Also, rewrite the rev-parse logic to end with a `|| return 1` instead of &&-chaining into the rev-comparison logic. This makes it obvious to future readers that we explicitly intend on returning early if either of the rev-parses fail. Signed-off-by: Denton Liu <liu.denton@gmail.com> --- t/t2400-worktree-add.sh | 4 ++-- t/t3400-rebase.sh | 2 +- t/t3421-rebase-topology-linear.sh | 6 +++--- t/t3430-rebase-merges.sh | 2 +- t/t3432-rebase-fast-forward.sh | 2 +- t/t3501-revert-cherry-pick.sh | 2 +- t/t3508-cherry-pick-many-commits.sh | 2 +- t/test-lib-functions.sh | 20 ++++++++++++++++---- 8 files changed, 26 insertions(+), 14 deletions(-)