test_cmp expected actual
'
+test_expect_success 'dashdash disambiguates rev as rev' '
+ test_when_finished "rm -f master" &&
+ echo content >master &&
+ echo master:hello.c >expect &&
+ git grep -l o master -- hello.c >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'dashdash disambiguates pathspec as pathspec' '
+ test_when_finished "git rm -f master" &&
+ echo content >master &&
+ git add master &&
+ echo master:content >expect &&
+ git grep o -- master >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'report bogus arg without dashdash' '
+ test_must_fail git grep o does-not-exist
+'
+
+test_expect_success 'report bogus rev with dashdash' '
+ test_must_fail git grep o hello.c --
+'
+
+test_expect_success 'allow non-existent path with dashdash' '
+ # We need a real match so grep exits with success.
+ tree=$(git ls-tree HEAD |
+ sed s/hello.c/not-in-working-tree/ |
+ git mktree) &&
+ git grep o "$tree" -- not-in-working-tree
+'
+
test_expect_success 'grep --no-index pattern -- path' '
rm -fr non &&
mkdir -p non/git &&