[lua] Migrate tests to Junit5

pmd-lua/pom.xml

@@ -62,8 +62,8 @@
         </dependency>
 
         <dependency>
-            <groupId>junit</groupId>
-            <artifactId>junit</artifactId>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter</artifactId>
             <scope>test</scope>
         </dependency>
         <dependency>

pmd-lua/src/test/java/net/sourceforge/pmd/cpd/LuaTokenizerTest.java

@@ -6,12 +6,12 @@ package net.sourceforge.pmd.cpd;
 
 import java.util.Properties;
 
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
 import net.sourceforge.pmd.cpd.test.CpdTextComparisonTest;
 
-public class LuaTokenizerTest extends CpdTextComparisonTest {
-    public LuaTokenizerTest() {
+class LuaTokenizerTest extends CpdTextComparisonTest {
+    LuaTokenizerTest() {
         super(".lua");
     }
 
@@ -26,17 +26,17 @@ public class LuaTokenizerTest extends CpdTextComparisonTest {
     }
 
     @Test
-    public void testSimple() {
+    void testSimple() {
         doTest("helloworld");
     }
 
     @Test
-    public void testFactorial() {
+    void testFactorial() {
         doTest("factorial");
     }
 
     @Test
-    public void testTabWidth() {
+    void testTabWidth() {
         doTest("tabWidth");
     }
 }