From 071d0ca2e93c3a49dfa26f9b5a0e2a010ac33c74 Mon Sep 17 00:00:00 2001 From: brokenhardisk Date: Mon, 2 Oct 2023 07:03:58 +0200 Subject: [PATCH] BAEL-6849 Junit Tests for Interfaces in Java (#14847) * BAEL-6849 Junit Tests for Interfaces in Java * BAEL-6849 Junit Tests for Interfaces in Java * BAEL-6849 Junit Tests for Interfaces in Java * BAEL-6849 JUnit Tests for Interfaces in Java --- .../baeldung/interfaces/unittest/Circle.java | 19 +++++++++++++ .../interfaces/unittest/Rectangle.java | 21 +++++++++++++++ .../baeldung/interfaces/unittest/Shape.java | 6 +++++ .../unittest/CircleExtendsBaseUnitTest.java | 26 ++++++++++++++++++ .../interfaces/unittest/CircleUnitTest.java | 22 +++++++++++++++ .../unittest/ParameterizedUnitTest.java | 27 +++++++++++++++++++ .../RectangleExtendsBaseUnitTest.java | 26 ++++++++++++++++++ .../unittest/RectangleUnitTest.java | 22 +++++++++++++++ .../interfaces/unittest/ShapeUnitTest.java | 21 +++++++++++++++ 9 files changed, 190 insertions(+) create mode 100644 testing-modules/junit-5-advanced/src/main/java/com/baeldung/interfaces/unittest/Circle.java create mode 100644 testing-modules/junit-5-advanced/src/main/java/com/baeldung/interfaces/unittest/Rectangle.java create mode 100644 testing-modules/junit-5-advanced/src/main/java/com/baeldung/interfaces/unittest/Shape.java create mode 100644 testing-modules/junit-5-advanced/src/test/java/com/baeldung/interfaces/unittest/CircleExtendsBaseUnitTest.java create mode 100644 testing-modules/junit-5-advanced/src/test/java/com/baeldung/interfaces/unittest/CircleUnitTest.java create mode 100644 testing-modules/junit-5-advanced/src/test/java/com/baeldung/interfaces/unittest/ParameterizedUnitTest.java create mode 100644 testing-modules/junit-5-advanced/src/test/java/com/baeldung/interfaces/unittest/RectangleExtendsBaseUnitTest.java create mode 100644 testing-modules/junit-5-advanced/src/test/java/com/baeldung/interfaces/unittest/RectangleUnitTest.java create mode 100644 testing-modules/junit-5-advanced/src/test/java/com/baeldung/interfaces/unittest/ShapeUnitTest.java 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 instantiateShapeWithExpectedArea() { + Map 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 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 instantiateShapeWithExpectedArea() { + Map 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 instantiateShapeWithExpectedArea(); + + @Test + void givenShapeInstance_whenAreaIsCalculated_thenSuccessful() { + Map shapeAreaMap = instantiateShapeWithExpectedArea(); + Shape shape = (Shape) shapeAreaMap.get("shape"); + double expectedArea = (double) shapeAreaMap.get("area"); + double area = shape.area(); + assertEquals(expectedArea, area); + } +}