t6032: Add a test checking for excessive output from merge

diff --git a/t/t5510-fetch.sh b/t/t5510-fetch.sh
index 950b7720e35fbc9ccb4170f5f6a43fff0bb7bc4d..9a884751ec73ff721d658ebb69cbfe1f0270be85 100755 (executable)
--- a/t/t5510-fetch.sh
+++ b/t/t5510-fetch.sh
@@ -21,27 +21,30 @@ test_expect_success setup '
 
 test_expect_success "clone and setup child repos" '
        git clone . one &&
-       cd one &&
-       echo >file updated by one &&
-       git commit -a -m "updated by one" &&
-       cd .. &&
+       (
+               cd one &&
+               echo >file updated by one &&
+               git commit -a -m "updated by one"
+       ) &&
        git clone . two &&
-       cd two &&
-       git config branch.master.remote one &&
-       git config remote.one.url ../one/.git/ &&
-       git config remote.one.fetch refs/heads/master:refs/heads/one &&
-       cd .. &&
+       (
+               cd two &&
+               git config branch.master.remote one &&
+               git config remote.one.url ../one/.git/ &&
+               git config remote.one.fetch refs/heads/master:refs/heads/one
+       ) &&
        git clone . three &&
-       cd three &&
-       git config branch.master.remote two &&
-       git config branch.master.merge refs/heads/one &&
-       mkdir -p .git/remotes &&
-       {
-               echo "URL: ../two/.git/"
-               echo "Pull: refs/heads/master:refs/heads/two"
-               echo "Pull: refs/heads/one:refs/heads/one"
-       } >.git/remotes/two &&
-       cd .. &&
+       (
+               cd three &&
+               git config branch.master.remote two &&
+               git config branch.master.merge refs/heads/one &&
+               mkdir -p .git/remotes &&
+               {
+                       echo "URL: ../two/.git/"
+                       echo "Pull: refs/heads/master:refs/heads/two"
+                       echo "Pull: refs/heads/one:refs/heads/one"
+               } >.git/remotes/two
+       ) &&
        git clone . bundle &&
        git clone . seven
 '
@@ -71,7 +74,7 @@ test_expect_success "fetch test for-merge" '
                echo "$one_in_two       "
        } >expected &&
        cut -f -2 .git/FETCH_HEAD >actual &&
-       diff expected actual'
+       test_cmp expected actual'
 
 test_expect_success 'fetch tags when there is no tags' '
 
@@ -240,10 +243,36 @@ test_expect_success 'fetch with a non-applying branch.<name>.merge' '
        git fetch blub
 '
 
-test_expect_failure 'fetch from GIT URL with a non-applying branch.<name>.merge' '
+# URL supplied to fetch does not match the url of the configured branch's remote
+test_expect_success 'fetch from GIT URL with a non-applying branch.<name>.merge [1]' '
+       one_head=$(cd one && git rev-parse HEAD) &&
+       this_head=$(git rev-parse HEAD) &&
+       git update-ref -d FETCH_HEAD &&
+       git fetch one &&
+       test $one_head = "$(git rev-parse --verify FETCH_HEAD)" &&
+       test $this_head = "$(git rev-parse --verify HEAD)"
+'
+
+# URL supplied to fetch matches the url of the configured branch's remote and
+# the merge spec matches the branch the remote HEAD points to
+test_expect_success 'fetch from GIT URL with a non-applying branch.<name>.merge [2]' '
+       one_ref=$(cd one && git symbolic-ref HEAD) &&
+       git config branch.master.remote blub &&
+       git config branch.master.merge "$one_ref" &&
+       git update-ref -d FETCH_HEAD &&
+       git fetch one &&
+       test $one_head = "$(git rev-parse --verify FETCH_HEAD)" &&
+       test $this_head = "$(git rev-parse --verify HEAD)"
+'
+
+# URL supplied to fetch matches the url of the configured branch's remote, but
+# the merge spec does not match the branch the remote HEAD points to
+test_expect_success 'fetch from GIT URL with a non-applying branch.<name>.merge [3]' '
+       git config branch.master.merge "${one_ref}_not" &&
        git update-ref -d FETCH_HEAD &&
        git fetch one &&
-       git rev-parse --verify FETCH_HEAD
+       test $one_head = "$(git rev-parse --verify FETCH_HEAD)" &&
+       test $this_head = "$(git rev-parse --verify HEAD)"
 '
 
 # the strange name is: a\!'b