diff --git a/testing-modules/junit-5-advanced/src/main/java/com/baeldung/interfaces/unittest/Circle.java b/testing-modules/junit-5-advanced/src/main/java/com/baeldung/interfaces/unittest/Circle.java
new file mode 100644
index 0000000000..b0e63155f4
--- /dev/null
+++ b/testing-modules/junit-5-advanced/src/main/java/com/baeldung/interfaces/unittest/Circle.java
@@ -0,0 +1,19 @@
+package com.baeldung.interfaces.unittest;
+
+public class Circle implements Shape {
+
+    private double radius;
+
+    Circle(double radius) {
+        this.radius = radius;
+    }
+
+    @Override
+    public double area() {
+        return 3.14 * radius * radius;
+    }
+
+    public double circumference() {
+        return 2 * 3.14 * radius;
+    }
+}
diff --git a/testing-modules/junit-5-advanced/src/main/java/com/baeldung/interfaces/unittest/Rectangle.java b/testing-modules/junit-5-advanced/src/main/java/com/baeldung/interfaces/unittest/Rectangle.java
new file mode 100644
index 0000000000..a88233e83b
--- /dev/null
+++ b/testing-modules/junit-5-advanced/src/main/java/com/baeldung/interfaces/unittest/Rectangle.java
@@ -0,0 +1,21 @@
+package com.baeldung.interfaces.unittest;
+
+public class Rectangle implements Shape {
+
+    private double length;
+    private double breadth;
+
+    public Rectangle(double length, double breadth) {
+        this.length = length;
+        this.breadth = breadth;
+    }
+
+    @Override
+    public double area() {
+        return length * breadth;
+    }
+
+    public double perimeter() {
+        return 2 * (length + breadth);
+    }
+}
diff --git a/testing-modules/junit-5-advanced/src/main/java/com/baeldung/interfaces/unittest/Shape.java b/testing-modules/junit-5-advanced/src/main/java/com/baeldung/interfaces/unittest/Shape.java
new file mode 100644
index 0000000000..bac42fb246
--- /dev/null
+++ b/testing-modules/junit-5-advanced/src/main/java/com/baeldung/interfaces/unittest/Shape.java
@@ -0,0 +1,6 @@
+package com.baeldung.interfaces.unittest;
+
+public interface Shape {
+
+    double area();
+}
diff --git a/testing-modules/junit-5-advanced/src/test/java/com/baeldung/interfaces/unittest/CircleExtendsBaseUnitTest.java b/testing-modules/junit-5-advanced/src/test/java/com/baeldung/interfaces/unittest/CircleExtendsBaseUnitTest.java
new file mode 100644
index 0000000000..08ce2bc779
--- /dev/null
+++ b/testing-modules/junit-5-advanced/src/test/java/com/baeldung/interfaces/unittest/CircleExtendsBaseUnitTest.java
@@ -0,0 +1,26 @@
+package com.baeldung.interfaces.unittest;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import org.junit.jupiter.api.Test;
+
+class CircleExtendsBaseUnitTest extends ShapeUnitTest {
+
+    @Override
+    public Map<String, Object> instantiateShapeWithExpectedArea() {
+        Map<String, Object> shapeAreaMap = new HashMap<>();
+        shapeAreaMap.put("shape", new Circle(5));
+        shapeAreaMap.put("area", 78.5);
+        return shapeAreaMap;
+    }
+
+    @Test
+    void whenCircumferenceIsCalculated_thenSuccessful() {
+        Circle circle = new Circle(2);
+        double circumference = circle.circumference();
+        assertEquals(12.56, circumference);
+    }
+}
\ No newline at end of file
diff --git a/testing-modules/junit-5-advanced/src/test/java/com/baeldung/interfaces/unittest/CircleUnitTest.java b/testing-modules/junit-5-advanced/src/test/java/com/baeldung/interfaces/unittest/CircleUnitTest.java
new file mode 100644
index 0000000000..c0b4eecedc
--- /dev/null
+++ b/testing-modules/junit-5-advanced/src/test/java/com/baeldung/interfaces/unittest/CircleUnitTest.java
@@ -0,0 +1,22 @@
+package com.baeldung.interfaces.unittest;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import org.junit.jupiter.api.Test;
+
+class CircleUnitTest {
+
+    @Test
+    void whenAreaIsCalculated_thenSuccessful() {
+        Shape circle = new Circle(5);
+        double area = circle.area();
+        assertEquals(78.5, area);
+    }
+
+    @Test
+    void whenCircumferenceIsCalculated_thenSuccessful() {
+        Circle circle = new Circle(2);
+        double circumference = circle.circumference();
+        assertEquals(12.56, circumference);
+    }
+}
\ No newline at end of file
diff --git a/testing-modules/junit-5-advanced/src/test/java/com/baeldung/interfaces/unittest/ParameterizedUnitTest.java b/testing-modules/junit-5-advanced/src/test/java/com/baeldung/interfaces/unittest/ParameterizedUnitTest.java
new file mode 100644
index 0000000000..6b5cd6b6ab
--- /dev/null
+++ b/testing-modules/junit-5-advanced/src/test/java/com/baeldung/interfaces/unittest/ParameterizedUnitTest.java
@@ -0,0 +1,27 @@
+package com.baeldung.interfaces.unittest;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.util.Arrays;
+import java.util.Collection;
+
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.MethodSource;
+
+public class ParameterizedUnitTest {
+
+    @ParameterizedTest
+    @MethodSource("data")
+    void givenShapeInstance_whenAreaIsCalculated_thenSuccessful(Shape shapeInstance, double expectedArea) {
+        double area = shapeInstance.area();
+        assertEquals(expectedArea, area);
+
+    }
+
+    private static Collection<Object[]> data() {
+        return Arrays.asList(new Object[][] {
+          { new Circle(5), 78.5 },
+          { new Rectangle(4, 5), 20 }
+        });
+    }
+}
diff --git a/testing-modules/junit-5-advanced/src/test/java/com/baeldung/interfaces/unittest/RectangleExtendsBaseUnitTest.java b/testing-modules/junit-5-advanced/src/test/java/com/baeldung/interfaces/unittest/RectangleExtendsBaseUnitTest.java
new file mode 100644
index 0000000000..b6771ad648
--- /dev/null
+++ b/testing-modules/junit-5-advanced/src/test/java/com/baeldung/interfaces/unittest/RectangleExtendsBaseUnitTest.java
@@ -0,0 +1,26 @@
+package com.baeldung.interfaces.unittest;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import org.junit.jupiter.api.Test;
+
+class RectangleExtendsBaseUnitTest extends ShapeUnitTest {
+
+    @Override
+    public Map<String, Object> instantiateShapeWithExpectedArea() {
+        Map<String, Object> shapeAreaMap = new HashMap<>();
+        shapeAreaMap.put("shape", new Rectangle(5, 4));
+        shapeAreaMap.put("area", 20.0);
+        return shapeAreaMap;
+    }
+
+    @Test
+    void whenPerimeterIsCalculated_thenSuccessful() {
+        Rectangle rectangle = new Rectangle(5, 4);
+        double perimeter = rectangle.perimeter();
+        assertEquals(18, perimeter);
+    }
+}
\ No newline at end of file
diff --git a/testing-modules/junit-5-advanced/src/test/java/com/baeldung/interfaces/unittest/RectangleUnitTest.java b/testing-modules/junit-5-advanced/src/test/java/com/baeldung/interfaces/unittest/RectangleUnitTest.java
new file mode 100644
index 0000000000..1983353667
--- /dev/null
+++ b/testing-modules/junit-5-advanced/src/test/java/com/baeldung/interfaces/unittest/RectangleUnitTest.java
@@ -0,0 +1,22 @@
+package com.baeldung.interfaces.unittest;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import org.junit.jupiter.api.Test;
+
+class RectangleUnitTest {
+
+    @Test
+    void whenAreaIsCalculated_thenSuccessful() {
+        Shape rectangle = new Rectangle(5, 4);
+        double area = rectangle.area();
+        assertEquals(20, area);
+    }
+
+    @Test
+    void whenPerimeterIsCalculated_thenSuccessful() {
+        Rectangle rectangle = new Rectangle(5, 4);
+        double perimeter = rectangle.perimeter();
+        assertEquals(18, perimeter);
+    }
+}
\ No newline at end of file
diff --git a/testing-modules/junit-5-advanced/src/test/java/com/baeldung/interfaces/unittest/ShapeUnitTest.java b/testing-modules/junit-5-advanced/src/test/java/com/baeldung/interfaces/unittest/ShapeUnitTest.java
new file mode 100644
index 0000000000..a9d318f698
--- /dev/null
+++ b/testing-modules/junit-5-advanced/src/test/java/com/baeldung/interfaces/unittest/ShapeUnitTest.java
@@ -0,0 +1,21 @@
+package com.baeldung.interfaces.unittest;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.util.Map;
+
+import org.junit.jupiter.api.Test;
+
+public abstract class ShapeUnitTest {
+
+    public abstract Map<String, Object> instantiateShapeWithExpectedArea();
+
+    @Test
+    void givenShapeInstance_whenAreaIsCalculated_thenSuccessful() {
+        Map<String, Object> shapeAreaMap = instantiateShapeWithExpectedArea();
+        Shape shape = (Shape) shapeAreaMap.get("shape");
+        double expectedArea = (double) shapeAreaMap.get("area");
+        double area = shape.area();
+        assertEquals(expectedArea, area);
+    }
+}