Create DataElementTest.

src/test/java/com/thegates/maple/data/DataElementTest.java

@@ -0,0 +1,36 @@
+package com.thegates.maple.data;
+
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+public class DataElementTest {
+
+    private DataMap testMap;
+
+    @BeforeEach
+    void setUp() {
+        testMap = new DataMap("named").put("test_element", new DataPrimitive("test_value"));
+    }
+
+    @Test
+    void path() {
+        assert testMap.navigate("test_element").path().equals("named.test_element");
+    }
+
+    @Test
+    void isOf() {
+        assert testMap.navigate("test_element").isOf(DataPrimitive.class);
+    }
+
+    @Test
+    void getAsOrNull() {
+        assert testMap.navigate("test_element").getAsOrNull(DataMap.class) == null;
+        assert testMap.navigate("test_element").getAsOrNull(DataPrimitive.class) != null;
+    }
+
+    @AfterEach
+    void tearDown() {
+        testMap = null;
+    }
+}