Check string in slice.

utils/list.go

@@ -51,5 +51,14 @@ func StrMapsEqual(m1, m2 map[string]string) bool {
 	}
 
 	return true
-
+}
+
+// StrSliceHasItem checks item for presence in slice
+func StrSliceHasItem(s []string, item string) bool {
+	for _, v := range s {
+		if v == item {
+			return true
+		}
+	}
+	return false
 }

utils/list_test.go

@@ -37,3 +37,8 @@ func (s *ListSuite) TestStrMapsEqual(c *C) {
 	c.Check(StrMapsEqual(map[string]string{"a": "1", "b": "2"}, map[string]string{"a": "1", "c": "2"}), Equals, false)
 	c.Check(StrMapsEqual(map[string]string{"a": "1", "b": "2"}, map[string]string{"a": "1"}), Equals, false)
 }
+
+func (s *ListSuite) TestStrSliceHasIteml(c *C) {
+	c.Check(StrSliceHasItem([]string{"a", "b"}, "b"), Equals, true)
+	c.Check(StrSliceHasItem([]string{"a", "b"}, "c"), Equals, false)
+}