t1400: use show-ref to check pseudorefs

Now that "git show-ref --verify" accepts pseudorefs use that in
preference to "git rev-parse" when checking pseudorefs as we do when
checking branches etc.

Signed-off-by: Phillip Wood <[email protected]>

t/t1400-update-ref.sh

@@ -524,51 +524,51 @@ test_expect_success 'given old value for missing pseudoref, do not create' '
 
 test_expect_success 'create pseudoref' '
 	git update-ref PSEUDOREF $A &&
-	test $A = $(git rev-parse PSEUDOREF)
+	test $A = $(git show-ref -s --verify PSEUDOREF)
 '
 
 test_expect_success 'overwrite pseudoref with no old value given' '
 	git update-ref PSEUDOREF $B &&
-	test $B = $(git rev-parse PSEUDOREF)
+	test $B = $(git show-ref -s --verify PSEUDOREF)
 '
 
 test_expect_success 'overwrite pseudoref with correct old value' '
 	git update-ref PSEUDOREF $C $B &&
-	test $C = $(git rev-parse PSEUDOREF)
+	test $C = $(git show-ref -s --verify PSEUDOREF)
 '
 
 test_expect_success 'do not overwrite pseudoref with wrong old value' '
 	test_must_fail git update-ref PSEUDOREF $D $E 2>err &&
-	test $C = $(git rev-parse PSEUDOREF) &&
+	test $C = $(git show-ref -s --verify PSEUDOREF) &&
 	test_grep "cannot lock ref.*expected" err
 '
 
 test_expect_success 'delete pseudoref' '
 	git update-ref -d PSEUDOREF &&
-	test_must_fail git rev-parse PSEUDOREF
+	test_must_fail git show-ref -s --verify PSEUDOREF
 '
 
 test_expect_success 'do not delete pseudoref with wrong old value' '
 	git update-ref PSEUDOREF $A &&
 	test_must_fail git update-ref -d PSEUDOREF $B 2>err &&
-	test $A = $(git rev-parse PSEUDOREF) &&
+	test $A = $(git show-ref -s --verify PSEUDOREF) &&
 	test_grep "cannot lock ref.*expected" err
 '
 
 test_expect_success 'delete pseudoref with correct old value' '
 	git update-ref -d PSEUDOREF $A &&
-	test_must_fail git rev-parse PSEUDOREF
+	test_must_fail git show-ref -s --verify PSEUDOREF
 '
 
 test_expect_success 'create pseudoref with old OID zero' '
 	git update-ref PSEUDOREF $A $Z &&
-	test $A = $(git rev-parse PSEUDOREF)
+	test $A = $(git show-ref -s --verify PSEUDOREF)
 '
 
 test_expect_success 'do not overwrite pseudoref with old OID zero' '
 	test_when_finished git update-ref -d PSEUDOREF &&
 	test_must_fail git update-ref PSEUDOREF $B $Z 2>err &&
-	test $A = $(git rev-parse PSEUDOREF) &&
+	test $A = $(git show-ref -s --verify PSEUDOREF) &&
 	test_grep "already exists" err
 '