Maven Classifier (#11833)

* maven classifier

* static imports

* bumped up plugin versions

Co-authored-by: s9m33r <no-reply>

maven-modules/maven-classifier/maven-classifier-example-provider/src/main/java/com/baeldung/maven/dependency/classifier/provider/factory/CarFactory.java

@@ -0,0 +1,14 @@
+package com.baeldung.maven.dependency.classifier.provider.factory;
+
+import com.baeldung.maven.dependency.classifier.provider.model.Car;
+import com.baeldung.maven.dependency.classifier.provider.model.Car.Type;
+
+public class CarFactory {
+
+    public static Car manufacture(Type carType) {
+        Car car = new Car();
+        car.setType(carType);
+
+        return car;
+    }
+}

maven-modules/maven-classifier/maven-classifier-example-provider/src/main/java/com/baeldung/maven/dependency/classifier/provider/model/Car.java

@@ -0,0 +1,26 @@
+package com.baeldung.maven.dependency.classifier.provider.model;
+
+public class Car {
+    private Type type;
+    private PowerSource fuelType;
+
+    public Type getType() {
+        return this.type;
+    }
+
+    public void setType(Type carType) {
+        this.type = carType;
+    }
+
+    public PowerSource getPowerSource() {
+        return this.fuelType;
+    }
+
+    public void setFuelType(PowerSource fuelType) {
+        this.fuelType = fuelType;
+    }
+
+    public enum Type {
+        ELECTRIC
+    }
+}

maven-modules/maven-classifier/maven-classifier-example-provider/src/main/java/com/baeldung/maven/dependency/classifier/provider/model/PowerSource.java

@@ -0,0 +1,5 @@
+package com.baeldung.maven.dependency.classifier.provider.model;
+
+public enum PowerSource {
+    BATTERY
+}

maven-modules/maven-classifier/maven-classifier-example-provider/src/test/java/com/baeldung/maven/dependency/classifier/provider/factory/CarFactoryUnitTest.java

@@ -0,0 +1,32 @@
+
+package com.baeldung.maven.dependency.classifier.provider.factory;
+
+import com.baeldung.maven.dependency.classifier.provider.model.Car;
+import com.baeldung.maven.dependency.classifier.provider.model.Car.Type;
+import com.baeldung.maven.dependency.classifier.provider.model.PowerSource;
+import com.baeldung.maven.dependency.classifier.provider.stub.CarStub;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+
+class CarFactoryUnitTest {
+
+    @Test
+    @DisplayName("Given Car type When CarFactory manufacture is called Then create a Car of the given type")
+    public void givenCarType_whenCarFactoryManufactureCalled_thenCreateCarOfGivenType() {
+        Car car = CarFactory.manufacture(Type.ELECTRIC);
+
+        assertNotNull(car, "CarFactory didn't manufacture a car. Car is null");
+        assertEquals(Type.ELECTRIC, car.getType());
+    }
+
+    @Test
+    @DisplayName("Given an electric car When asked for fuel type Then return Battery")
+    public void givenElectricCar_whenAskedForFuelType_thenReturnBattery() {
+        Car car = CarStub.ELECTRIC_CAR;
+
+        assertEquals(PowerSource.BATTERY, car.getPowerSource());
+    }
+}

maven-modules/maven-classifier/maven-classifier-example-provider/src/test/java/com/baeldung/maven/dependency/classifier/provider/stub/CarStub.java

@@ -0,0 +1,17 @@
+package com.baeldung.maven.dependency.classifier.provider.stub;
+
+import com.baeldung.maven.dependency.classifier.provider.model.Car;
+import com.baeldung.maven.dependency.classifier.provider.model.PowerSource;
+import com.baeldung.maven.dependency.classifier.provider.model.Car.Type;
+import org.mockito.Mockito;
+
+import static org.mockito.Mockito.when;
+
+public class CarStub {
+    public static Car ELECTRIC_CAR = Mockito.mock(Car.class);
+
+    static {
+        when(ELECTRIC_CAR.getType()).thenReturn(Type.ELECTRIC);
+        when(ELECTRIC_CAR.getPowerSource()).thenReturn(PowerSource.BATTERY);
+    }
+}