diff --git a/tests/test-config-case b/tests/test-config-case
new file mode 100755
--- /dev/null
+++ b/tests/test-config-case
@@ -0,0 +1,7 @@
+#!/bin/sh
+
+echo '[Section]' >> $HGRCPATH
+echo 'KeY = Case Sensitive' >> $HGRCPATH
+echo 'key = lower case' >> $HGRCPATH
+
+hg showconfig