update design pattern

realDuYuanChao · realDuYuanChao · commit 68e495a133f7 · 2021-11-11T09:54:20.000+08:00
diff --git a/src/main/java/com/examplehub/designpatterns/decorator/Decorator.java b/src/main/java/com/examplehub/designpatterns/decorator/Decorator.java
@@ -0,0 +1,15 @@
+package com.examplehub.designpatterns.decorator;
+
+public class Decorator implements Readable{
+  Readable readable;
+
+  public Decorator(Readable readable) {
+    this.readable = readable;
+  }
+
+  @Override
+  public void read() {
+    readable.read();
+    System.out.println("I not have enough power");
+  }
+}
diff --git a/src/main/java/com/examplehub/designpatterns/decorator/Machine.java b/src/main/java/com/examplehub/designpatterns/decorator/Machine.java
@@ -0,0 +1,8 @@
+package com.examplehub.designpatterns.decorator;
+
+public class Machine implements Readable{
+  @Override
+  public void read() {
+    System.out.println("I'm reading");
+  }
+}
diff --git a/src/main/java/com/examplehub/designpatterns/decorator/Readable.java b/src/main/java/com/examplehub/designpatterns/decorator/Readable.java
@@ -0,0 +1,5 @@
+package com.examplehub.designpatterns.decorator;
+
+public interface Readable {
+  void read();
+}
diff --git a/src/main/java/com/examplehub/designpatterns/factory/EmailSender.java b/src/main/java/com/examplehub/designpatterns/factory/EmailSender.java
@@ -0,0 +1,8 @@
+package com.examplehub.designpatterns.factory;
+
+public class EmailSender implements Sender{
+  @Override
+  public String send(String message) {
+    return "email:" + message;
+  }
+}
diff --git a/src/main/java/com/examplehub/designpatterns/factory/EmailSenderFactory.java b/src/main/java/com/examplehub/designpatterns/factory/EmailSenderFactory.java
@@ -0,0 +1,8 @@
+package com.examplehub.designpatterns.factory;
+
+public class EmailSenderFactory implements SenderFactory{
+  @Override
+  public Sender build() {
+    return new EmailSender();
+  }
+}
diff --git a/src/main/java/com/examplehub/designpatterns/factory/NormalSenderFactory.java b/src/main/java/com/examplehub/designpatterns/factory/NormalSenderFactory.java
@@ -0,0 +1,33 @@
+package com.examplehub.designpatterns.factory;
+
+public class NormalSenderFactory {
+  public Sender build(String senderType) {
+    switch (senderType) {
+      case "email":
+        return new EmailSender();
+      case "sms":
+        return new SmsSender();
+      default:
+        return null;
+    }
+  }
+
+  public Sender build(SenderType senderType) {
+    switch (senderType) {
+      case EMAIL_SENDER:
+        return new EmailSender();
+      case SMS_SENDER:
+        return new SmsSender();
+      default:
+        return null;
+    }
+  }
+
+  public Sender buildEmailSender() {
+    return new EmailSender();
+  }
+
+  public Sender buildSmsSender() {
+    return new SmsSender();
+  }
+}
diff --git a/src/main/java/com/examplehub/designpatterns/factory/Sender.java b/src/main/java/com/examplehub/designpatterns/factory/Sender.java
@@ -0,0 +1,5 @@
+package com.examplehub.designpatterns.factory;
+
+public interface Sender {
+  String send(String message);
+}
diff --git a/src/main/java/com/examplehub/designpatterns/factory/SenderFactory.java b/src/main/java/com/examplehub/designpatterns/factory/SenderFactory.java
@@ -0,0 +1,5 @@
+package com.examplehub.designpatterns.factory;
+
+public interface SenderFactory {
+  Sender build();
+}
diff --git a/src/main/java/com/examplehub/designpatterns/factory/SenderType.java b/src/main/java/com/examplehub/designpatterns/factory/SenderType.java
@@ -0,0 +1,6 @@
+package com.examplehub.designpatterns.factory;
+
+public enum SenderType {
+  EMAIL_SENDER,
+  SMS_SENDER
+}
diff --git a/src/main/java/com/examplehub/designpatterns/factory/SmsSender.java b/src/main/java/com/examplehub/designpatterns/factory/SmsSender.java
@@ -0,0 +1,8 @@
+package com.examplehub.designpatterns.factory;
+
+public class SmsSender implements Sender{
+  @Override
+  public String send(String message) {
+    return "sms:" + message;
+  }
+}
diff --git a/src/main/java/com/examplehub/designpatterns/factory/SmsSenderFactory.java b/src/main/java/com/examplehub/designpatterns/factory/SmsSenderFactory.java
@@ -0,0 +1,8 @@
+package com.examplehub.designpatterns.factory;
+
+public class SmsSenderFactory implements SenderFactory{
+  @Override
+  public Sender build() {
+    return new SmsSender();
+  }
+}
diff --git a/src/main/java/com/examplehub/designpatterns/factory/StaticSenderFactory.java b/src/main/java/com/examplehub/designpatterns/factory/StaticSenderFactory.java
@@ -0,0 +1,33 @@
+package com.examplehub.designpatterns.factory;
+
+public class StaticSenderFactory {
+  public static Sender build(String senderType) {
+    switch (senderType) {
+      case "email":
+        return new EmailSender();
+      case "sms":
+        return new SmsSender();
+      default:
+        return null;
+    }
+  }
+
+  public static Sender build(SenderType senderType) {
+    switch (senderType) {
+      case EMAIL_SENDER:
+        return new EmailSender();
+      case SMS_SENDER:
+        return new SmsSender();
+      default:
+        return null;
+    }
+  }
+
+  public static Sender buildEmailSender() {
+    return new EmailSender();
+  }
+
+  public static Sender buildSmsSender() {
+    return new SmsSender();
+  }
+}
diff --git a/src/main/java/com/examplehub/designpatterns/proxy/Proxy.java b/src/main/java/com/examplehub/designpatterns/proxy/Proxy.java
@@ -0,0 +1,16 @@
+package com.examplehub.designpatterns.proxy;
+
+import com.examplehub.designpatterns.decorator.Machine;
+import com.examplehub.designpatterns.decorator.Readable;
+
+public class Proxy implements Readable {
+
+  Readable readable;
+  public Proxy() {
+    readable = new Machine();
+  }
+  @Override
+  public void read() {
+    readable.read();
+  }
+}
diff --git a/src/main/java/com/examplehub/designpatterns/template/Calculator.java b/src/main/java/com/examplehub/designpatterns/template/Calculator.java
@@ -0,0 +1,9 @@
+package com.examplehub.designpatterns.template;
+
+public abstract class Calculator {
+  public int calculate(String expression, String operator) {
+    String[] operators = expression.split(operator);
+    return calculate(Integer.parseInt(operators[0]), Integer.parseInt(operators[1]));
+  }
+  public abstract int calculate(int a, int b);
+}
diff --git a/src/main/java/com/examplehub/designpatterns/template/Minus.java b/src/main/java/com/examplehub/designpatterns/template/Minus.java
@@ -0,0 +1,8 @@
+package com.examplehub.designpatterns.template;
+
+public class Minus extends Calculator{
+  @Override
+  public int calculate(int a, int b) {
+    return a - b;
+  }
+}
diff --git a/src/main/java/com/examplehub/designpatterns/template/Plus.java b/src/main/java/com/examplehub/designpatterns/template/Plus.java
@@ -0,0 +1,8 @@
+package com.examplehub.designpatterns.template;
+
+public class Plus extends Calculator {
+  @Override
+  public int calculate(int a, int b) {
+    return a + b;
+  }
+}
diff --git a/src/test/java/com/examplehub/designpatterns/decorator/DecoratorTest.java b/src/test/java/com/examplehub/designpatterns/decorator/DecoratorTest.java
@@ -0,0 +1,20 @@
+package com.examplehub.designpatterns.decorator;
+
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+class DecoratorTest {
+  @Test
+  @Disabled
+  void test() {
+    Readable readable = new Machine();
+    readable.read(); // I'm reading
+
+    /*
+     * I'm reading
+     * I not have enough power
+     */
+    Decorator decorator = new Decorator(readable);
+    decorator.read();
+  }
+}
diff --git a/src/test/java/com/examplehub/designpatterns/factory/NormalSenderFactoryTest.java b/src/test/java/com/examplehub/designpatterns/factory/NormalSenderFactoryTest.java
@@ -0,0 +1,49 @@
+package com.examplehub.designpatterns.factory;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class NormalSenderFactoryTest {
+  @Test
+  void testBuildEmailSender() {
+    NormalSenderFactory factory = new NormalSenderFactory();
+    Sender sender = factory.build("email");
+    assertEquals("email:how are you", sender.send("how are you"));
+  }
+
+  @Test
+  void testBuildSmsSender() {
+    NormalSenderFactory factory = new NormalSenderFactory();
+    Sender sender = factory.build("sms");
+    assertEquals("sms:you are so beautiful", sender.send("you are so beautiful"));
+  }
+
+  @Test
+  void testBuildEmailSenderEnum() {
+    NormalSenderFactory factory = new NormalSenderFactory();
+    Sender sender = factory.build(SenderType.EMAIL_SENDER);
+    assertEquals("email:how are you", sender.send("how are you"));
+  }
+
+  @Test
+  void testBuildSmsSenderEnum() {
+    NormalSenderFactory factory = new NormalSenderFactory();
+    Sender sender = factory.build(SenderType.SMS_SENDER);
+    assertEquals("sms:how are you", sender.send("how are you"));
+  }
+
+  @Test
+  void testBuildEmailType() {
+    NormalSenderFactory factory = new NormalSenderFactory();
+    Sender sender = factory.buildEmailSender();
+    assertEquals("email:how are you", sender.send("how are you"));
+  }
+
+  @Test
+  void testBuildSmsType() {
+    NormalSenderFactory factory = new NormalSenderFactory();
+    Sender sender = factory.buildSmsSender();
+    assertEquals("sms:how are you", sender.send("how are you"));
+  }
+}
diff --git a/src/test/java/com/examplehub/designpatterns/factory/SenderFactoryTest.java b/src/test/java/com/examplehub/designpatterns/factory/SenderFactoryTest.java
@@ -0,0 +1,21 @@
+package com.examplehub.designpatterns.factory;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class SenderFactoryTest {
+  @Test
+  void testBuildEmailSender() {
+    SenderFactory factory = new EmailSenderFactory();
+    Sender emailSender = factory.build();
+    assertEquals("email:how are you", emailSender.send("how are you"));
+  }
+
+  @Test
+  void testBuildSmsSender() {
+    SenderFactory factory = new SmsSenderFactory();
+    Sender smsSender = factory.build();
+    assertEquals("sms:how are you", smsSender.send("how are you"));
+  }
+}
diff --git a/src/test/java/com/examplehub/designpatterns/factory/StaticSenderFactoryTest.java b/src/test/java/com/examplehub/designpatterns/factory/StaticSenderFactoryTest.java
@@ -0,0 +1,47 @@
+package com.examplehub.designpatterns.factory;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class StaticSenderFactoryTest {
+  @Test
+  void testBuildEmailSender() {
+    Sender sender = StaticSenderFactory.build("email");
+    assert sender != null;
+    assertEquals("email:how are you", sender.send("how are you"));
+  }
+
+  @Test
+  void testBuildSmsSender() {
+    Sender sender = StaticSenderFactory.build("sms");
+    assert sender != null;
+    assertEquals("sms:you are so beautiful", sender.send("you are so beautiful"));
+  }
+
+  @Test
+  void testBuildEmailSenderEnum() {
+    Sender sender = StaticSenderFactory.build(SenderType.EMAIL_SENDER);
+    assert sender != null;
+    assertEquals("email:how are you", sender.send("how are you"));
+  }
+
+  @Test
+  void testBuildSmsSenderEnum() {
+    Sender sender = StaticSenderFactory.build(SenderType.SMS_SENDER);
+    assert sender != null;
+    assertEquals("sms:how are you", sender.send("how are you"));
+  }
+
+  @Test
+  void testBuildEmailType() {
+    Sender sender = StaticSenderFactory.buildEmailSender();
+    assertEquals("email:how are you", sender.send("how are you"));
+  }
+
+  @Test
+  void testBuildSmsType() {
+    Sender sender = StaticSenderFactory.buildSmsSender();
+    assertEquals("sms:how are you", sender.send("how are you"));
+  }
+}
diff --git a/src/test/java/com/examplehub/designpatterns/proxy/ProxyTest.java b/src/test/java/com/examplehub/designpatterns/proxy/ProxyTest.java
@@ -0,0 +1,14 @@
+package com.examplehub.designpatterns.proxy;
+
+import com.examplehub.designpatterns.decorator.Readable;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+class ProxyTest {
+  @Test
+  @Disabled
+  void test() {
+    Readable readable = new Proxy();
+    readable.read();
+  }
+}
diff --git a/src/test/java/com/examplehub/designpatterns/template/CalculatorTest.java b/src/test/java/com/examplehub/designpatterns/template/CalculatorTest.java
@@ -0,0 +1,19 @@
+package com.examplehub.designpatterns.template;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class CalculatorTest {
+  @Test
+  void testPlus() {
+    Calculator calculator = new Plus();
+    assertEquals(5, calculator.calculate("2+3", "\\+"));
+  }
+
+  @Test
+  void testMinus() {
+    Calculator calculator = new Minus();
+    assertEquals(-1, calculator.calculate("2-3", "-"));
+  }
+}
