Merge pull request #7522 from dupirefr/bael-3117

dupirefr/dupire.francois+pro@gmail.com [BAEL-3117] The XOR Operator in Java

core-java-modules/core-java-lang-operators/src/main/java/com/baeldung/booleanoperators/Car.java

@@ -0,0 +1,36 @@
+package com.baeldung.booleanoperators;
+
+public class Car {
+
+    private boolean diesel;
+    private boolean manual;
+
+    public Car(boolean diesel, boolean manual) {
+        this.diesel = diesel;
+        this.manual = manual;
+    }
+
+    public boolean isDiesel() {
+        return diesel;
+    }
+
+    public boolean isManual() {
+        return manual;
+    }
+
+    static Car dieselAndManualCar() {
+        return new Car(true, true);
+    }
+
+    static Car dieselAndAutomaticCar() {
+        return new Car(true, false);
+    }
+
+    static Car oilAndManualCar() {
+        return new Car(false, true);
+    }
+
+    static Car oilAndAutomaticCar() {
+        return new Car(false, false);
+    }
+}

core-java-modules/core-java-lang-operators/src/test/java/com/baeldung/booleanoperators/XorUnitTest.java

@@ -0,0 +1,69 @@
+package com.baeldung.booleanoperators;
+
+import org.junit.jupiter.api.Test;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+class XorUnitTest {
+
+    @Test
+    void givenDieselManualCar_whenXorOldSchool_thenFalse() {
+        Car car = Car.dieselAndManualCar();
+        boolean dieselXorManual = (car.isDiesel() && !car.isManual()) || (!car.isDiesel() && car.isManual());
+        assertThat(dieselXorManual).isFalse();
+    }
+
+    @Test
+    void givenDieselAutomaticCar_whenXorOldSchool_thenTrue() {
+        Car car = Car.dieselAndAutomaticCar();
+        boolean dieselXorManual = (car.isDiesel() && !car.isManual()) || (!car.isDiesel() && car.isManual());
+        assertThat(dieselXorManual).isTrue();
+    }
+
+    @Test
+    void givenNonDieselManualCar_whenXorOldSchool_thenTrue() {
+        Car car = Car.oilAndManualCar();
+        boolean dieselXorManual = (car.isDiesel() && !car.isManual()) || (!car.isDiesel() && car.isManual());
+        assertThat(dieselXorManual).isTrue();
+    }
+
+    @Test
+    void givenNonDieselAutomaticCar_whenXorOldSchool_thenFalse() {
+        Car car = Car.oilAndAutomaticCar();
+        boolean dieselXorManual = (car.isDiesel() && !car.isManual()) || (!car.isDiesel() && car.isManual());
+        assertThat(dieselXorManual).isFalse();
+    }
+
+    @Test
+    void givenDieselManualCar_whenXor_thenFalse() {
+        Car car = Car.dieselAndManualCar();
+        boolean dieselXorManual = car.isDiesel() ^ car.isManual();
+        assertThat(dieselXorManual).isFalse();
+    }
+
+    @Test
+    void givenDieselAutomaticCar_whenXor_thenTrue() {
+        Car car = Car.dieselAndAutomaticCar();
+        boolean dieselXorManual = car.isDiesel() ^ car.isManual();
+        assertThat(dieselXorManual).isTrue();
+    }
+
+    @Test
+    void givenNonDieselManualCar_whenXor_thenTrue() {
+        Car car = Car.oilAndManualCar();
+        boolean dieselXorManual = car.isDiesel() ^ car.isManual();
+        assertThat(dieselXorManual).isTrue();
+    }
+
+    @Test
+    void givenNonDieselAutomaticCar_whenXor_thenFalse() {
+        Car car = Car.oilAndAutomaticCar();
+        boolean dieselXorManual = car.isDiesel() ^ car.isManual();
+        assertThat(dieselXorManual).isFalse();
+    }
+    
+    @Test
+    void givenNumbersOneAndThree_whenXor_thenTwo() {
+        assertThat(1 ^ 3).isEqualTo(2);
+    }
+}