--- /dev/null
+/*
+ * Copyright (c) 2017 Pantheon Technologies s.r.o. and others. All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+package org.opendaylight.yangtools.yang.common;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertThrows;
+
+import java.util.Optional;
+import org.junit.Test;
+
+public class YangVersionTest {
+ @Test
+ public void testGetReference() {
+ assertEquals("RFC6020", YangVersion.VERSION_1.getReference());
+ assertEquals("RFC7950", YangVersion.VERSION_1_1.getReference());
+ }
+
+ @Test
+ public void testParse() {
+ assertEquals(Optional.empty(), YangVersion.parse(""));
+ assertEquals(Optional.empty(), YangVersion.parse("1."));
+ assertEquals(Optional.of(YangVersion.VERSION_1), YangVersion.parse("1"));
+ assertEquals(Optional.of(YangVersion.VERSION_1_1), YangVersion.parse("1.1"));
+ }
+
+ @Test
+ public void testParseNull() {
+ assertThrows(NullPointerException.class, () -> YangVersion.parse(null));
+ }
+
+ @Test
+ public void testToString() {
+ assertEquals("1", YangVersion.VERSION_1.toString());
+ assertEquals("1.1", YangVersion.VERSION_1_1.toString());
+ }
+}