refactoring : shotgun surgery - inline class

refactoring/src/main/java/com/example/refactoring/_08_shotgun_surgery/_29_inline_class/Shipment.java

@@ -0,0 +1,33 @@
+package com.example.refactoring._08_shotgun_surgery._29_inline_class;
+
+public class Shipment {
+
+    private String shippingCompany;
+
+    private String trackingNumber;
+
+    public Shipment(String shippingCompany, String trackingNumber) {
+        this.shippingCompany = shippingCompany;
+        this.trackingNumber = trackingNumber;
+    }
+
+    public String getTrackingInfo() {
+        return this.shippingCompany + ": " + this.trackingNumber;
+    }
+
+    public String getShippingCompany() {
+        return shippingCompany;
+    }
+
+    public void setShippingCompany(String shippingCompany) {
+        this.shippingCompany = shippingCompany;
+    }
+
+    public String getTrackingNumber() {
+        return trackingNumber;
+    }
+
+    public void setTrackingNumber(String trackingNumber) {
+        this.trackingNumber = trackingNumber;
+    }
+}

refactoring/src/main/java/com/example/refactoring/_08_shotgun_surgery/_29_inline_class/_before/Shipment.java

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+package com.example.refactoring._08_shotgun_surgery._29_inline_class._before;
+
+public class Shipment {
+
+    private TrackingInformation trackingInformation;
+
+    public Shipment(TrackingInformation trackingInformation) {
+        this.trackingInformation = trackingInformation;
+    }
+
+    public TrackingInformation getTrackingInformation() {
+        return trackingInformation;
+    }
+
+    public void setTrackingInformation(TrackingInformation trackingInformation) {
+        this.trackingInformation = trackingInformation;
+    }
+
+    public String getTrackingInfo() {
+        return this.trackingInformation.display();
+    }
+}

refactoring/src/main/java/com/example/refactoring/_08_shotgun_surgery/_29_inline_class/_before/TrackingInformation.java

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+package com.example.refactoring._08_shotgun_surgery._29_inline_class._before;
+
+public class TrackingInformation {
+
+    private String shippingCompany;
+
+    private String trackingNumber;
+
+    public TrackingInformation(String shippingCompany, String trackingNumber) {
+        this.shippingCompany = shippingCompany;
+        this.trackingNumber = trackingNumber;
+    }
+
+    public String display() {
+        return this.shippingCompany + ": " + this.trackingNumber;
+    }
+
+    public String getShippingCompany() {
+        return shippingCompany;
+    }
+
+    public void setShippingCompany(String shippingCompany) {
+        this.shippingCompany = shippingCompany;
+    }
+
+    public String getTrackingNumber() {
+        return trackingNumber;
+    }
+
+    public void setTrackingNumber(String trackingNumber) {
+        this.trackingNumber = trackingNumber;
+    }
+}

refactoring/src/test/java/com/example/refactoring/_08_shotgun_surgery/_29_inline_class/ShipmentTest.java

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+package com.example.refactoring._08_shotgun_surgery._29_inline_class;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class ShipmentTest {
+
+    @Test
+    void trackingInfo() {
+        Shipment shipment = new Shipment("UPS", "12345");
+        assertEquals("UPS: 12345", shipment.getTrackingInfo());
+    }
+
+}