branch: allow a no-op "branch -M <current-branch> HEAD"

diff --git a/t/t5516-fetch-push.sh b/t/t5516-fetch-push.sh
index d73731e6446f71480db1ec7cceb73f27ad51ecd3..b69cf574d7e9a272ea70864e87ed6556abe94f13 100755 (executable)
--- a/t/t5516-fetch-push.sh
+++ b/t/t5516-fetch-push.sh
@@ -40,6 +40,40 @@ mk_test () {
        )
 }
 
+mk_test_with_hooks() {
+       mk_test "$@" &&
+       (
+               cd testrepo &&
+               mkdir .git/hooks &&
+               cd .git/hooks &&
+
+               cat >pre-receive <<-'EOF' &&
+               #!/bin/sh
+               cat - >>pre-receive.actual
+               EOF
+
+               cat >update <<-'EOF' &&
+               #!/bin/sh
+               printf "%s %s %s\n" "$@" >>update.actual
+               EOF
+
+               cat >post-receive <<-'EOF' &&
+               #!/bin/sh
+               cat - >>post-receive.actual
+               EOF
+
+               cat >post-update <<-'EOF' &&
+               #!/bin/sh
+               for ref in "$@"
+               do
+                       printf "%s\n" "$ref" >>post-update.actual
+               done
+               EOF
+
+               chmod +x pre-receive update post-receive post-update
+       )
+}
+
 mk_child() {
        rm -rf "$1" &&
        git clone testrepo "$1"
@@ -367,7 +401,7 @@ test_expect_success 'push with colon-less refspec (4)' '
 
 '
 
-test_expect_success 'push head with non-existant, incomplete dest' '
+test_expect_success 'push head with non-existent, incomplete dest' '
 
        mk_test &&
        git push testrepo master:branch &&
@@ -375,7 +409,7 @@ test_expect_success 'push head with non-existant, incomplete dest' '
 
 '
 
-test_expect_success 'push tag with non-existant, incomplete dest' '
+test_expect_success 'push tag with non-existent, incomplete dest' '
 
        mk_test &&
        git tag -f v1.0 &&
@@ -384,14 +418,14 @@ test_expect_success 'push tag with non-existant, incomplete dest' '
 
 '
 
-test_expect_success 'push sha1 with non-existant, incomplete dest' '
+test_expect_success 'push sha1 with non-existent, incomplete dest' '
 
        mk_test &&
        test_must_fail git push testrepo `git rev-parse master`:foo
 
 '
 
-test_expect_success 'push ref expression with non-existant, incomplete dest' '
+test_expect_success 'push ref expression with non-existent, incomplete dest' '
 
        mk_test &&
        test_must_fail git push testrepo master^:branch
@@ -436,7 +470,7 @@ test_expect_success 'push with +HEAD' '
 
 '
 
-test_expect_success 'push HEAD with non-existant, incomplete dest' '
+test_expect_success 'push HEAD with non-existent, incomplete dest' '
 
        mk_test &&
        git checkout master &&
@@ -559,6 +593,169 @@ test_expect_success 'allow deleting an invalid remote ref' '
 
 '
 
+test_expect_success 'pushing valid refs triggers post-receive and post-update hooks' '
+       mk_test_with_hooks heads/master heads/next &&
+       orgmaster=$(cd testrepo && git show-ref -s --verify refs/heads/master) &&
+       newmaster=$(git show-ref -s --verify refs/heads/master) &&
+       orgnext=$(cd testrepo && git show-ref -s --verify refs/heads/next) &&
+       newnext=$_z40 &&
+       git push testrepo refs/heads/master:refs/heads/master :refs/heads/next &&
+       (
+               cd testrepo/.git &&
+               cat >pre-receive.expect <<-EOF &&
+               $orgmaster $newmaster refs/heads/master
+               $orgnext $newnext refs/heads/next
+               EOF
+
+               cat >update.expect <<-EOF &&
+               refs/heads/master $orgmaster $newmaster
+               refs/heads/next $orgnext $newnext
+               EOF
+
+               cat >post-receive.expect <<-EOF &&
+               $orgmaster $newmaster refs/heads/master
+               $orgnext $newnext refs/heads/next
+               EOF
+
+               cat >post-update.expect <<-EOF &&
+               refs/heads/master
+               refs/heads/next
+               EOF
+
+               test_cmp pre-receive.expect pre-receive.actual &&
+               test_cmp update.expect update.actual &&
+               test_cmp post-receive.expect post-receive.actual &&
+               test_cmp post-update.expect post-update.actual
+       )
+'
+
+test_expect_success 'deleting dangling ref triggers hooks with correct args' '
+       mk_test_with_hooks heads/master &&
+       rm -f testrepo/.git/objects/??/* &&
+       git push testrepo :refs/heads/master &&
+       (
+               cd testrepo/.git &&
+               cat >pre-receive.expect <<-EOF &&
+               $_z40 $_z40 refs/heads/master
+               EOF
+
+               cat >update.expect <<-EOF &&
+               refs/heads/master $_z40 $_z40
+               EOF
+
+               cat >post-receive.expect <<-EOF &&
+               $_z40 $_z40 refs/heads/master
+               EOF
+
+               cat >post-update.expect <<-EOF &&
+               refs/heads/master
+               EOF
+
+               test_cmp pre-receive.expect pre-receive.actual &&
+               test_cmp update.expect update.actual &&
+               test_cmp post-receive.expect post-receive.actual &&
+               test_cmp post-update.expect post-update.actual
+       )
+'
+
+test_expect_success 'deletion of a non-existent ref is not fed to post-receive and post-update hooks' '
+       mk_test_with_hooks heads/master &&
+       orgmaster=$(cd testrepo && git show-ref -s --verify refs/heads/master) &&
+       newmaster=$(git show-ref -s --verify refs/heads/master) &&
+       git push testrepo master :refs/heads/nonexistent &&
+       (
+               cd testrepo/.git &&
+               cat >pre-receive.expect <<-EOF &&
+               $orgmaster $newmaster refs/heads/master
+               $_z40 $_z40 refs/heads/nonexistent
+               EOF
+
+               cat >update.expect <<-EOF &&
+               refs/heads/master $orgmaster $newmaster
+               refs/heads/nonexistent $_z40 $_z40
+               EOF
+
+               cat >post-receive.expect <<-EOF &&
+               $orgmaster $newmaster refs/heads/master
+               EOF
+
+               cat >post-update.expect <<-EOF &&
+               refs/heads/master
+               EOF
+
+               test_cmp pre-receive.expect pre-receive.actual &&
+               test_cmp update.expect update.actual &&
+               test_cmp post-receive.expect post-receive.actual &&
+               test_cmp post-update.expect post-update.actual
+       )
+'
+
+test_expect_success 'deletion of a non-existent ref alone does trigger post-receive and post-update hooks' '
+       mk_test_with_hooks heads/master &&
+       git push testrepo :refs/heads/nonexistent &&
+       (
+               cd testrepo/.git &&
+               cat >pre-receive.expect <<-EOF &&
+               $_z40 $_z40 refs/heads/nonexistent
+               EOF
+
+               cat >update.expect <<-EOF &&
+               refs/heads/nonexistent $_z40 $_z40
+               EOF
+
+               test_cmp pre-receive.expect pre-receive.actual &&
+               test_cmp update.expect update.actual &&
+               test_path_is_missing post-receive.actual &&
+               test_path_is_missing post-update.actual
+       )
+'
+
+test_expect_success 'mixed ref updates, deletes, invalid deletes trigger hooks with correct input' '
+       mk_test_with_hooks heads/master heads/next heads/pu &&
+       orgmaster=$(cd testrepo && git show-ref -s --verify refs/heads/master) &&
+       newmaster=$(git show-ref -s --verify refs/heads/master) &&
+       orgnext=$(cd testrepo && git show-ref -s --verify refs/heads/next) &&
+       newnext=$_z40 &&
+       orgpu=$(cd testrepo && git show-ref -s --verify refs/heads/pu) &&
+       newpu=$(git show-ref -s --verify refs/heads/master) &&
+       git push testrepo refs/heads/master:refs/heads/master \
+           refs/heads/master:refs/heads/pu :refs/heads/next \
+           :refs/heads/nonexistent &&
+       (
+               cd testrepo/.git &&
+               cat >pre-receive.expect <<-EOF &&
+               $orgmaster $newmaster refs/heads/master
+               $orgnext $newnext refs/heads/next
+               $orgpu $newpu refs/heads/pu
+               $_z40 $_z40 refs/heads/nonexistent
+               EOF
+
+               cat >update.expect <<-EOF &&
+               refs/heads/master $orgmaster $newmaster
+               refs/heads/next $orgnext $newnext
+               refs/heads/pu $orgpu $newpu
+               refs/heads/nonexistent $_z40 $_z40
+               EOF
+
+               cat >post-receive.expect <<-EOF &&
+               $orgmaster $newmaster refs/heads/master
+               $orgnext $newnext refs/heads/next
+               $orgpu $newpu refs/heads/pu
+               EOF
+
+               cat >post-update.expect <<-EOF &&
+               refs/heads/master
+               refs/heads/next
+               refs/heads/pu
+               EOF
+
+               test_cmp pre-receive.expect pre-receive.actual &&
+               test_cmp update.expect update.actual &&
+               test_cmp post-receive.expect post-receive.actual &&
+               test_cmp post-update.expect post-update.actual
+       )
+'
+
 test_expect_success 'allow deleting a ref using --delete' '
        mk_test heads/master &&
        (cd testrepo && git config receive.denyDeleteCurrent warn) &&