test-lib: tests skipped by GIT_SKIP_TESTS say so

diff --git a/t/t1300-repo-config.sh b/t/t1300-repo-config.sh
index 85c66370081bcb31dece9e3af3f6acb6bada1b50..58cd5435be59107c3bac323e0d53816ab0f8e4ae 100755 (executable)
--- a/t/t1300-repo-config.sh
+++ b/t/t1300-repo-config.sh
@@ -475,15 +475,28 @@ ein.bahn=strasse
 EOF
 
 test_expect_success 'alternative GIT_CONFIG' '
-       GIT_CONFIG=other-config git config -l >output &&
+       GIT_CONFIG=other-config git config --list >output &&
        test_cmp expect output
 '
 
 test_expect_success 'alternative GIT_CONFIG (--file)' '
-       git config --file other-config -l > output &&
+       git config --file other-config --list >output &&
        test_cmp expect output
 '
 
+test_expect_success 'alternative GIT_CONFIG (--file=-)' '
+       git config --file - --list <other-config >output &&
+       test_cmp expect output
+'
+
+test_expect_success 'setting a value in stdin is an error' '
+       test_must_fail git config --file - some.value foo
+'
+
+test_expect_success 'editing stdin is an error' '
+       test_must_fail git config --file - --edit
+'
+
 test_expect_success 'refer config from subdirectory' '
        mkdir x &&
        (