t/helper: merge test-drop-caches into test-tool

diff --git a/t/t6300-for-each-ref.sh b/t/t6300-for-each-ref.sh
index c128dfc5790790de9edf1b4d2cfa8b028c1036bc..295d1475bde0151df65e0098e6e4a169193906ed 100755 (executable)
--- a/t/t6300-for-each-ref.sh
+++ b/t/t6300-for-each-ref.sh
@@ -373,11 +373,8 @@ test_expect_success 'Quoting style: tcl' '
 
 for i in "--perl --shell" "-s --python" "--python --tcl" "--tcl --perl"; do
        test_expect_success "more than one quoting style: $i" "
-               git for-each-ref $i 2>&1 | (read line &&
-               case \$line in
-               \"error: more than one quoting style\"*) : happy;;
-               *) false
-               esac)
+               test_must_fail git for-each-ref $i 2>err &&
+               grep '^error: more than one quoting style' err
        "
 done