hooks: Add function to check if a hook exists

diff --git a/t/t9800-git-p4-basic.sh b/t/t9800-git-p4-basic.sh
index 05797c31d14e135c28cae476485483183c6fabd8..8c5979647ffceeb6614f0cdb58ae06170afac7c4 100755 (executable)
--- a/t/t9800-git-p4-basic.sh
+++ b/t/t9800-git-p4-basic.sh
@@ -183,6 +183,18 @@ test_expect_success 'initial import time from top change time' '
        )
 '
 
+test_expect_success 'unresolvable host in P4PORT should display error' '
+       test_when_finished cleanup_git &&
+       git p4 clone --dest="$git" //depot &&
+       (
+               cd "$git" &&
+               P4PORT=nosuchhost:65537 &&
+               export P4PORT &&
+               test_expect_code 1 git p4 sync >out 2>err &&
+               grep "connect to nosuchhost" err
+       )
+'
+
 test_expect_success 'kill p4d' '
        kill_p4d
 '