1 files changed, 19 insertions, 0 deletions
diff --git a/third_party/git/t/t0013-sha1dc.sh b/third_party/git/t/t0013-sha1dc.sh
new file mode 100755
index 000000000000..419f31a8f7d4
--- /dev/null
+++ b/third_party/git/t/t0013-sha1dc.sh
@@ -0,0 +1,19 @@
+#!/bin/sh
+
+test_description='test sha1 collision detection'
+. ./test-lib.sh
+TEST_DATA="$TEST_DIRECTORY/t0013"
+
+if test -z "$DC_SHA1"
+then
+	skip_all='skipping sha1 collision tests, DC_SHA1 not set'
+	test_done
+fi
+
+test_expect_success 'test-sha1 detects shattered pdf' '
+	test_must_fail test-tool sha1 <"$TEST_DATA/shattered-1.pdf" 2>err &&
+	test_i18ngrep collision err &&
+	grep 38762cf7f55934b34d179ae6a4c80cadccbb7f0a err
+'
+
+test_done