BAEL-5671 code for the validate an XML file against an XSD file article

xml-2/src/test/java/com/baeldung/xml/validation/XmlValidatorUnitTest.java

@@ -0,0 +1,35 @@
+package com.baeldung.xml.validation;
+
+import org.junit.jupiter.api.Test;
+import org.xml.sax.SAXException;
+import java.io.IOException;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class XmlValidatorUnitTest {
+
+    private static final String BAELDUNG_XML_PATH = "xml/validation/baeldung.xml";
+    private static final String PERSON_XSD_PATH = "xml/validation/person.xsd";
+    private static final String FULL_PERSON_XSD_PATH = "xml/validation/full-person.xsd";
+
+    @Test
+    public void givenValidXML_WhenIsValid_ThenTrue() throws IOException, SAXException {
+        assertTrue(new XmlValidator(PERSON_XSD_PATH, BAELDUNG_XML_PATH).isValid());
+    }
+
+    @Test
+    public void givenInvalidXML_WhenIsValid_ThenFalse() throws IOException, SAXException {
+        assertFalse(new XmlValidator(FULL_PERSON_XSD_PATH, BAELDUNG_XML_PATH).isValid());
+    }
+
+    @Test
+    public void givenValidXML_WhenListParsingExceptions_ThenNone() throws IOException, SAXException {
+        assertEquals(0, new XmlValidator(PERSON_XSD_PATH, BAELDUNG_XML_PATH).listParsingExceptions().size());
+    }
+
+    @Test
+    public void givenInvalidXML_WhenListParsingExceptions_ThenHasThree() throws IOException, SAXException {
+        assertEquals(3, new XmlValidator(FULL_PERSON_XSD_PATH, BAELDUNG_XML_PATH).listParsingExceptions().size());
+    }
+
+}