Add first ever JUnit tests

- Cover SimpleNameTest with a couple of test cases
- Ensure they pass

nodel-framework/src/test/java/org/nodel/SimpleNameTest.java

@@ -0,0 +1,37 @@
+package org.nodel;
+
+import org.junit.jupiter.api.TestInstance;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.CsvSource;
+import org.junit.jupiter.params.provider.ValueSource;
+import static org.junit.jupiter.api.Assertions.*;
+
+@TestInstance(TestInstance.Lifecycle.PER_CLASS)
+class SimpleNameTest {
+
+    @ParameterizedTest
+    @ValueSource(strings = {
+            "node_name",
+            "Node Name",
+            "node-name",
+            "node.name",
+            "node name"
+    })
+    void testGetOriginalName(String originalName) {
+        SimpleName name = new SimpleName(originalName);
+        assertEquals(originalName, name.getOriginalName());
+    }
+
+    @ParameterizedTest
+    @CsvSource({
+            "node_name, nodename",
+            "Node Name, NodeName",
+            "node-name, nodename",
+            "node.name, nodename",
+            "node name, nodename"
+    })
+    public void testGetReducedName(String originalName, String expectedReducedName) {
+        SimpleName name = new SimpleName(originalName);
+        assertEquals(expectedReducedName, name.getReducedName());
+    }
+}