t7501: always use test_cmp instead of diff

diff --git a/t/t3700-add.sh b/t/t3700-add.sh
index e83fa1f6894dd13eb11cae6afb8ecbd3dcb999db..2ac93a346d016c65614f2bf6142049e7bdc39bd1 100755 (executable)
--- a/t/t3700-add.sh
+++ b/t/t3700-add.sh
@@ -85,12 +85,12 @@ test_expect_success '.gitignore is honored' '
 '
 
 test_expect_success 'error out when attempting to add ignored ones without -f' '
-       ! git add a.?? &&
+       test_must_fail git add a.?? &&
        ! (git ls-files | grep "\\.ig")
 '
 
 test_expect_success 'error out when attempting to add ignored ones without -f' '
-       ! git add d.?? &&
+       test_must_fail git add d.?? &&
        ! (git ls-files | grep "\\.ig")
 '
 
@@ -222,4 +222,12 @@ test_expect_success 'git add (add.ignore-errors = false)' '
        ! ( git ls-files foo1 | grep foo1 )
 '
 
+test_expect_success 'git add '\''fo\[ou\]bar'\'' ignores foobar' '
+       git reset --hard &&
+       touch fo\[ou\]bar foobar &&
+       git add '\''fo\[ou\]bar'\'' &&
+       git ls-files fo\[ou\]bar | grep -F fo\[ou\]bar &&
+       ! ( git ls-files foobar | grep foobar )
+'
+
 test_done