fix(serialize-xml): add some tests

commons-serialize-xml/src/test/java/io/gitlab/jfronny/commons/serialize/xml/test/XmlWriterTest.java

@@ -0,0 +1,41 @@
+package io.gitlab.jfronny.commons.serialize.xml.test;
+
+import io.gitlab.jfronny.commons.serialize.xml.wrapper.XmlWriter;
+import org.junit.jupiter.api.Test;
+
+import java.io.IOException;
+import java.io.StringWriter;
+
+import static com.google.common.truth.Truth.assertThat;
+
+public class XmlWriterTest {
+    @Test
+    public void testWriteArray() throws IOException {
+        StringWriter writer = new StringWriter();
+        XmlWriter xmlWriter = new XmlWriter(writer);
+
+        xmlWriter.beginArray();
+        xmlWriter.name("mytem");
+        xmlWriter.value("value");
+        xmlWriter.value("value2");
+        xmlWriter.endArray();
+
+        String expected = "<item><mytem>value</mytem><item>value2</item></item>";
+        assertThat(writer.toString()).isEqualTo(expected);
+    }
+
+    @Test
+    public void testWriteObject() throws IOException {
+        StringWriter writer = new StringWriter();
+        XmlWriter xmlWriter = new XmlWriter(writer);
+
+        xmlWriter.name("w");
+        xmlWriter.beginObject();
+        xmlWriter.name("test");
+        xmlWriter.value("value");
+        xmlWriter.endObject();
+
+        String expected = "<w><test>value</test></w>";
+        assertThat(writer.toString()).isEqualTo(expected);
+    }
+}