Simple JUnit test and runner used to create the test.yaml GHA workflow

java/edu/ucar/metviewer/test/mvutil/TestMVUtil.java

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+package edu.ucar.metviewer.test.mvutil;
+
+import edu.ucar.metviewer.MVUtil;
+import org.junit.Test;
+
+import org.junit.runner.notification.Failure;
+import org.w3c.dom.Document;
+
+
+
+import static org.junit.Assert.*;
+
+
+public class TestMVUtil {
+    @Test
+    public void testCreateDocument(){
+        try{
+            System.out.println("Testing CreateDocument...");
+            assertTrue(MVUtil.createDocument() instanceof Document );
+            assertTrue(MVUtil.createDocument() != null);
+
+        }catch (javax.xml.parsers.ParserConfigurationException e){
+            fail("ParserConfigurationException was raised while creating a document");
+        }
+    }
+
+
+
+
+}

java/edu/ucar/metviewer/test/mvutil/TestRunner.java

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+package edu.ucar.metviewer.test.mvutil;
+
+import com.sun.net.httpserver.Authenticator;
+import org.junit.runner.JUnitCore;
+import org.junit.runner.Result;
+import org.junit.runner.notification.Failure;
+
+
+// Useful for running from the command line
+
+
+public class TestRunner {
+    public static void main(String[] args){
+        Result result = JUnitCore.runClasses(TestMVUtil.class);
+
+        for (Failure failure : result.getFailures()){
+            System.out.println(failure.toString());
+        }
+
+        System.out.println("Tests pass: "+ result.wasSuccessful() + "\nNumber of runs: " +
+                        result.getRunCount());
+    }
+}