Add Nick JUnit test

smack-extensions/src/test/java/org/jivesoftware/smackx/nick/NickTest.java

@@ -0,0 +1,83 @@
+/**
+ *
+ * Copyright 2020 Paul Schaub
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.jivesoftware.smackx.nick;
+
+import static org.jivesoftware.smack.test.util.XmlUnitUtils.assertXmlSimilar;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertThrows;
+
+import java.io.IOException;
+
+import org.jivesoftware.smack.parsing.SmackParsingException;
+import org.jivesoftware.smack.test.util.SmackTestUtil;
+import org.jivesoftware.smack.xml.XmlPullParserException;
+import org.jivesoftware.smackx.nick.packet.Nick;
+import org.jivesoftware.smackx.nick.provider.NickProvider;
+
+import org.junit.Test;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.EnumSource;
+
+public class NickTest {
+    /**
+     * see <a href="https://xmpp.org/extensions/xep-0172.html#example-3">XEP-0172: User Nickname - Example 3</a>
+     */
+    private static final String XML = "<nick xmlns='http://jabber.org/protocol/nick'>Ishmael</nick>";
+
+    @Test
+    public void disallowEmptyNickTest() {
+        assertThrows("Empty String as argument MUST cause IllegalArgumentException.",
+                IllegalArgumentException.class, () -> new Nick(""));
+    }
+
+    @Test
+    public void disallowNullNickTest() {
+        assertThrows("Null argument MUST cause IllegalArgumentException.",
+                IllegalArgumentException.class, () -> new Nick(null));
+    }
+
+
+    @Test
+    public void serializationTest() {
+        Nick nick = new Nick("Ishmael");
+
+        assertXmlSimilar(XML, nick.toXML());
+    }
+
+    @ParameterizedTest
+    @EnumSource(SmackTestUtil.XmlPullParserKind.class)
+    public void deserializationTest(SmackTestUtil.XmlPullParserKind parserKind)
+            throws XmlPullParserException, IOException, SmackParsingException {
+        Nick nick = SmackTestUtil.parse(XML, NickProvider.class, parserKind);
+
+        assertNotNull(nick);
+        assertEquals("Ishmael", nick.getName());
+    }
+
+    @Test
+    public void nicksAreEscapedTest() {
+        String name = "</nick>\"'&";
+
+        Nick nick = new Nick(name);
+
+        assertXmlSimilar("<nick xmlns='http://jabber.org/protocol/nick'>" +
+                "&lt;/nick&gt;&quot;&apos;&amp;" +
+                "</nick>", nick.toXML());
+        assertEquals(name, nick.getName());
+    }
+}