1 files changed, 17 insertions, 0 deletions
diff --git a/tests/it.t b/tests/it.t
index 475ff25..0fa84f2 100755
--- a/tests/it.t
+++ b/tests/it.t
@@ -199,4 +199,21 @@ is(
 	array( array( 'word1', 'wörd2', 'word_3' ), array( '12', '3', '4' ) ),
 	"test all=>1,pattern_order=>1"
 	);
+
+
+# it::filter_keys tests
+
+$data = array('a' => 1, 'b' => 2, 'c' => 3);
+is(it::filter_keys($data, 'a'),             array('a' => 1),           "select one key");
+is(it::filter_keys($data, array('a', 'b')), array('a' => 1, 'b' => 2), "select two keys with array");
+is(it::filter_keys($data, 'a,b'),           array('a' => 1, 'b' => 2), "select two keys with string");
+is(
+	array_keys(it::filter_keys($data, 'b,a')),
+	array('a', 'b'),
+	"keep order of data array per default");
+is(
+	array_keys(it::filter_keys($data, 'b,a', array('reorder' => true))),
+	array('b', 'a'),
+	"reorder with given key order");
+
 ?>