t4045: abstract away SHA-1-specific constants

diff --git a/t/t2107-update-index-basic.sh b/t/t2107-update-index-basic.sh
index 1db7e6a1abbebb63f811fa6ecbcd1db67607298e..2242cd098ec4ee0b278c008220d8c2a678b174c7 100755 (executable)
--- a/t/t2107-update-index-basic.sh
+++ b/t/t2107-update-index-basic.sh
@@ -37,7 +37,7 @@ test_expect_success '--cacheinfo does not accept blob null sha1' '
        echo content >file &&
        git add file &&
        git rev-parse :file >expect &&
-       test_must_fail git update-index --cacheinfo 100644 $_z40 file &&
+       test_must_fail git update-index --cacheinfo 100644 $ZERO_OID file &&
        git rev-parse :file >actual &&
        test_cmp expect actual
 '
@@ -47,7 +47,7 @@ test_expect_success '--cacheinfo does not accept gitlink null sha1' '
        (cd submodule && test_commit foo) &&
        git add submodule &&
        git rev-parse :submodule >expect &&
-       test_must_fail git update-index --cacheinfo 160000 $_z40 submodule &&
+       test_must_fail git update-index --cacheinfo 160000 $ZERO_OID submodule &&
        git rev-parse :submodule >actual &&
        test_cmp expect actual
 '