Add unit test for VoronoiDiagram edge computation

Author: sandeepgoudmacha

src/test/java/com/thealgorithms/geometry/voronoiDiagramTest.java

@@ -0,0 +1,22 @@
+package com.thealgorithms.geometry;
+
+import static org.junit.jupiter.api.Assertions.*;
+import java.awt.geom.Line2D;
+import java.util.Arrays;
+import java.util.List;
+import org.junit.jupiter.api.Test;
+
+public class VoronoiDiagramTest {
+
+    @Test
+    void testVoronoiEdges() {
+        List<Point> points = Arrays.asList(
+            new Point(0, 0), new Point(1, 0),
+            new Point(0, 1)
+        );
+
+        List<Line2D.Double> edges = VoronoiDiagram.computeVoronoiEdges(points);
+        assertFalse(edges.isEmpty());
+        assertTrue(edges.size() > 0);
+    }
+}