t3432: test for --no-ff's interaction with fast-forward

Add more stress tests for the can_fast_forward() case in
rebase.c. These tests are getting rather verbose, but now we can see
under --ff and --no-ff whether we skip work, or whether we're forced
to run the rebase.

These tests aren't supposed to endorse the status quo, just test for
what we're currently doing.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/t/t3432-rebase-fast-forward.sh b/t/t3432-rebase-fast-forward.sh
index d9f20fa07c47d2c2da1867ef802c4c0ab6f1f876..58ecb33e08a7e18c0ac13f5f2599436aff5f2b72 100755 (executable)
--- a/t/t3432-rebase-fast-forward.sh
+++ b/t/t3432-rebase-fast-forward.sh
@@ -16,22 +16,47 @@ test_expect_success setup '
 '
 
 test_rebase_same_head () {
+       status_n="$1" &&
+       shift &&
+       what_n="$1" &&
+       shift &&
+       cmp_n="$1" &&
+       shift &&
+       status_f="$1" &&
+       shift &&
+       what_f="$1" &&
+       shift &&
+       cmp_f="$1" &&
+       shift &&
+       test_rebase_same_head_ $status_n $what_n $cmp_n "" "$*" &&
+       test_rebase_same_head_ $status_f $what_f $cmp_f " --no-ff" "$*"
+}
+
+test_rebase_same_head_ () {
        status="$1" &&
        shift &&
        what="$1" &&
        shift &&
        cmp="$1" &&
        shift &&
-       test_expect_$status "git rebase $* with $changes is $what" "
+       flag="$1"
+       shift &&
+       test_expect_$status "git rebase$flag $* with $changes is $what with $cmp HEAD" "
                oldhead=\$(git rev-parse HEAD) &&
                test_when_finished 'git reset --hard \$oldhead' &&
-               git rebase $* >stdout &&
+               git rebase$flag $* >stdout &&
                if test $what = work
                then
+                       # Must check this case first, for 'is up to
+                       # date, rebase forced[...]rewinding head' cases
                        test_i18ngrep 'rewinding head' stdout
                elif test $what = noop
                then
-                       test_i18ngrep 'is up to date' stdout
+                       test_i18ngrep 'is up to date' stdout &&
+                       test_i18ngrep ! 'rebase forced' stdout
+               elif test $what = noop-force
+               then
+                       test_i18ngrep 'is up to date, rebase forced' stdout
                fi &&
                newhead=\$(git rev-parse HEAD) &&
                if test $cmp = same
@@ -45,32 +70,32 @@ test_rebase_same_head () {
 }
 
 changes='no changes'
-test_rebase_same_head success work same
-test_rebase_same_head success noop same master
-test_rebase_same_head success noop same --onto B B
-test_rebase_same_head success noop same --onto B... B
-test_rebase_same_head success noop same --onto master... master
-test_rebase_same_head success noop same --no-fork-point
-test_rebase_same_head success work same --fork-point master
-test_rebase_same_head failure noop same --fork-point --onto B B
-test_rebase_same_head failure work same --fork-point --onto B... B
-test_rebase_same_head success work same --fork-point --onto master... master
+test_rebase_same_head success work same success work same
+test_rebase_same_head success noop same success noop-force same master
+test_rebase_same_head success noop same success noop-force diff --onto B B
+test_rebase_same_head success noop same success noop-force diff --onto B... B
+test_rebase_same_head success noop same success noop-force same --onto master... master
+test_rebase_same_head success noop same success noop-force same --no-fork-point
+test_rebase_same_head success work same success work same --fork-point master
+test_rebase_same_head failure noop same success work diff --fork-point --onto B B
+test_rebase_same_head failure work same success work diff --fork-point --onto B... B
+test_rebase_same_head success work same success work same --fork-point --onto master... master
 
 test_expect_success 'add work same to side' '
        test_commit E
 '
 
 changes='our changes'
-test_rebase_same_head success work same
-test_rebase_same_head success noop same master
-test_rebase_same_head success noop same --onto B B
-test_rebase_same_head success noop same --onto B... B
-test_rebase_same_head success noop same --onto master... master
-test_rebase_same_head success noop same --no-fork-point
-test_rebase_same_head success work same --fork-point master
-test_rebase_same_head failure work same --fork-point --onto B B
-test_rebase_same_head failure work same --fork-point --onto B... B
-test_rebase_same_head success work same --fork-point --onto master... master
+test_rebase_same_head success work same success work same
+test_rebase_same_head success noop same success noop-force same master
+test_rebase_same_head success noop same success noop-force diff --onto B B
+test_rebase_same_head success noop same success noop-force diff --onto B... B
+test_rebase_same_head success noop same success noop-force same --onto master... master
+test_rebase_same_head success noop same success noop-force same --no-fork-point
+test_rebase_same_head success work same success work same --fork-point master
+test_rebase_same_head failure work same success work diff --fork-point --onto B B
+test_rebase_same_head failure work same success work diff --fork-point --onto B... B
+test_rebase_same_head success work same success work same --fork-point --onto master... master
 
 test_expect_success 'add work same to upstream' '
        git checkout master &&
@@ -79,11 +104,11 @@ test_expect_success 'add work same to upstream' '
 '
 
 changes='our and their changes'
-test_rebase_same_head success noop same --onto B B
-test_rebase_same_head success noop same --onto B... B
-test_rebase_same_head failure work same --onto master... master
-test_rebase_same_head failure work same --fork-point --onto B B
-test_rebase_same_head failure work same --fork-point --onto B... B
-test_rebase_same_head failure work same --fork-point --onto master... master
+test_rebase_same_head success noop same success noop-force diff --onto B B
+test_rebase_same_head success noop same success noop-force diff --onto B... B
+test_rebase_same_head failure work same success work diff --onto master... master
+test_rebase_same_head failure work same success work diff --fork-point --onto B B
+test_rebase_same_head failure work same success work diff --fork-point --onto B... B
+test_rebase_same_head failure work same success work diff --fork-point --onto master... master
 
 test_done