general improvements

diff --git a/t/t4054-diff-bogus-tree.sh b/t/t4054-diff-bogus-tree.sh
index 18f42c5fff9a6e3ccb56f9e3122c6c0469ad81a9..fcae82fffa7f74a65fc6b475cc5c3eeefda3029a 100755 (executable)
--- a/t/t4054-diff-bogus-tree.sh
+++ b/t/t4054-diff-bogus-tree.sh
@@ -19,37 +19,37 @@ test_expect_success 'create tree with matching file' '
 '
 
 test_expect_success 'raw diff shows null sha1 (addition)' '
-       echo ":000000 100644 $_z40 $_z40 A      foo" >expect &&
+       echo ":000000 100644 $ZERO_OID $ZERO_OID A      foo" >expect &&
        git diff-tree $EMPTY_TREE $bogus_tree >actual &&
        test_cmp expect actual
 '
 
 test_expect_success 'raw diff shows null sha1 (removal)' '
-       echo ":100644 000000 $_z40 $_z40 D      foo" >expect &&
+       echo ":100644 000000 $ZERO_OID $ZERO_OID D      foo" >expect &&
        git diff-tree $bogus_tree $EMPTY_TREE >actual &&
        test_cmp expect actual
 '
 
 test_expect_success 'raw diff shows null sha1 (modification)' '
-       echo ":100644 100644 $blob $_z40 M      foo" >expect &&
+       echo ":100644 100644 $blob $ZERO_OID M  foo" >expect &&
        git diff-tree $good_tree $bogus_tree >actual &&
        test_cmp expect actual
 '
 
 test_expect_success 'raw diff shows null sha1 (other direction)' '
-       echo ":100644 100644 $_z40 $blob M      foo" >expect &&
+       echo ":100644 100644 $ZERO_OID $blob M  foo" >expect &&
        git diff-tree $bogus_tree $good_tree >actual &&
        test_cmp expect actual
 '
 
 test_expect_success 'raw diff shows null sha1 (reverse)' '
-       echo ":100644 100644 $_z40 $blob M      foo" >expect &&
+       echo ":100644 100644 $ZERO_OID $blob M  foo" >expect &&
        git diff-tree -R $good_tree $bogus_tree >actual &&
        test_cmp expect actual
 '
 
 test_expect_success 'raw diff shows null sha1 (index)' '
-       echo ":100644 100644 $_z40 $blob M      foo" >expect &&
+       echo ":100644 100644 $ZERO_OID $blob M  foo" >expect &&
        git diff-index $bogus_tree >actual &&
        test_cmp expect actual
 '