test for '!' handling in rev-parse's named commits

In anticipation of extending this behaviour, add tests verifying the
handling of exclamation marks when looking up a commit "by name".

Specifically, as documented: '<rev>^{/!Message}' should fail, as the '!'
prefix is reserved; while '<rev>^{!!Message}' should search for a commit
whose message contains the string "!Message".

Signed-off-by: Will Palmer <wmpalmer@gmail.com>
Signed-off-by: Stephen P. Smith <ischis2@cox.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/t/t1511-rev-parse-caret.sh b/t/t1511-rev-parse-caret.sh
index 15973f2..b2f90be 100755 (executable)
--- a/t/t1511-rev-parse-caret.sh
+++ b/t/t1511-rev-parse-caret.sh
@@ -18,7 +18,15 @@ test_expect_success 'setup' '
        git checkout master &&
        echo modified >>a-blob &&
        git add -u &&
-       git commit -m Modified
+       git commit -m Modified &&
+       git branch modref &&
+       echo changed! >>a-blob &&
+       git add -u &&
+       git commit -m !Exp &&
+       git branch expref &&
+       echo changed >>a-blob &&
+       git add -u &&
+       git commit -m Changed
 '
 
 test_expect_success 'ref^{non-existent}' '
@@ -77,4 +85,18 @@ test_expect_success 'ref^{/Initial}' '
        test_cmp expected actual
 '
 
+test_expect_success 'ref^{/!Exp}' '
+       test_must_fail git rev-parse master^{/!Exp}
+'
+
+test_expect_success 'ref^{/!}' '
+       test_must_fail git rev-parse master^{/!}
+'
+
+test_expect_success 'ref^{/!!Exp}' '
+       git rev-parse expref >expected &&
+       git rev-parse master^{/!!Exp} >actual &&
+       test_cmp expected actual
+'
+
 test_done