Add tests for TS value and defaultValue

From arqex#297

Author: simeg

typings/react-datetime-tests.tsx

@@ -1,5 +1,6 @@
 import * as React from "react";
 import { Moment } from "moment";
+import * as moment from "moment";
 import * as ReactDatetime from "react-datetime";
 
 /*
@@ -20,6 +21,22 @@ const TEST_DATE_PROPS_FOR_DEFAULT_VALUE: JSX.Element = <ReactDatetime
 		defaultValue={ new Date() }
 	/>;
 
+const TEST_DATE_PROPS_FOR_VALUE_AS_MOMENT: JSX.Element = <ReactDatetime
+		value={ moment() }
+	/>;
+
+const TEST_DATE_PROPS_FOR_VALUE_AS_STRING: JSX.Element = <ReactDatetime
+		value={ '1995-12-25' }
+	/>;
+
+const TEST_DATE_PROPS_FOR_DEFAULT_VALUE_AS_MOMENT: JSX.Element = <ReactDatetime
+		defaultValue={ moment() }
+	/>;
+
+const TEST_DATE_PROPS_FOR_DEFAULT_VALUE_AS_STRING: JSX.Element = <ReactDatetime
+		defaultValue={ '1995-12-25' }
+	/>;
+
 /*
  Test formats
  */