#!/bin/sh test_description='git am with corrupt input' . ./test-lib.sh # Note the missing "+++" line: cat > bad-patch.diff <<'EOF' From: A U Thor <au.thor@example.com> diff --git a/f b/f index 7898192..6178079 100644 --- a/f @@ -1 +1 @@ -a +b EOF test_expect_success setup ' test $? = 0 && echo a > f && git add f && test_tick && git commit -m initial ' # This used to fail before, too, but with a different diagnostic. # fatal: unable to write file '(null)' mode 100644: Bad address # Also, it had the unwanted side-effect of deleting f. test_expect_success 'try to apply corrupted patch' ' git am bad-patch.diff 2> actual test $? = 1 ' cat > expected <<EOF fatal: git diff header lacks filename information (line 4) EOF test_expect_success 'compare diagnostic; ensure file is still here' ' test $? = 0 && test -f f && test_cmp expected actual ' test_done