t/test-lib: add an SHA1 prerequisite

[thirdparty/git.git] / t / test-lib.sh

diff --git a/t/test-lib.sh b/t/test-lib.sh
index ea2bbaaa7ab4dc77d0ef13cafbe45d1b12bd67e8..fce728d2eacce38bb5ba34ff409d1ed55f6f3bd5 100644 (file)
--- a/t/test-lib.sh
+++ b/t/test-lib.sh
@@ -1212,3 +1212,10 @@ test_lazy_prereq TIME_T_IS_64BIT 'test-tool date time_t-is64bit'
 test_lazy_prereq CURL '
        curl --version
 '
+
+# SHA1 is a test if the hash algorithm in use is SHA-1.  This is both for tests
+# which will not work with other hash algorithms and tests that work but don't
+# test anything meaningful (e.g. special values which cause short collisions).
+test_lazy_prereq SHA1 '
+       test $(git hash-object /dev/null) = e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
+'