powermock

Author: code4craft

pom.xml

@@ -9,6 +9,11 @@
     <version>1.0-SNAPSHOT</version>
 
     <dependencies>
+        <dependency>
+            <groupId>org.apache.commons</groupId>
+            <artifactId>commons-lang3</artifactId>
+            <version>3.1</version>
+        </dependency>
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
@@ -19,17 +24,25 @@
             <groupId>org.hamcrest</groupId>
             <artifactId>hamcrest-all</artifactId>
             <version>1.3</version>
-        </dependency>
-        <dependency>
-            <groupId>org.apache.commons</groupId>
-            <artifactId>commons-lang3</artifactId>
-            <version>3.1</version>
+            <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>org.mockito</groupId>
             <artifactId>mockito-all</artifactId>
             <version>1.9.5</version>
         </dependency>
+        <dependency>
+            <groupId>org.powermock</groupId>
+            <artifactId>powermock-module-junit4</artifactId>
+            <version>1.5.2</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.powermock</groupId>
+            <artifactId>powermock-api-mockito</artifactId>
+            <version>1.5.2</version>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
 
 

src/main/java/helloworld/Main.java

@@ -6,6 +6,7 @@
 import helloworld.behavioral.command.Command;
 import helloworld.behavioral.command.HelloWorldPrintCommand;
 import helloworld.behavioral.interpreter.HelloWorldInterpreter;
+import helloworld.behavioral.iterator.HelloWorldCharacterIterator;
 import helloworld.behavioral.mediator.HelloWorldMediator;
 import helloworld.behavioral.mediator.HelloWorldSlogan;
 import helloworld.behavioral.mediator.HelloWorldTarget;
@@ -93,6 +94,12 @@ public static void main(String[] args) throws InstantiationException, IllegalAcc
         HelloWorldInterpreter helloWorldInterpreter = new HelloWorldInterpreter();
         helloWorldInterpreter.interpret("println('Hello Interpreter!')");
 
+        HelloWorldCharacterIterator helloWorldCharacterIterator = new HelloWorldCharacterIterator("Hello Iterator!".toCharArray());
+        while (helloWorldCharacterIterator.hasNext()){
+            System.out.print(helloWorldCharacterIterator.next());
+        }
+        System.out.println();
+
         HelloWorldSlogan helloWorldSlogan = new HelloWorldSlogan();
         HelloWorldTarget helloWorldTarget = new HelloWorldTarget();
         HelloWorldMediator helloWorldMediator = new HelloWorldMediator(helloWorldSlogan,helloWorldTarget);

src/main/java/helloworld/behavioral/iterator/HelloWorldCharacterIterator.java

@@ -0,0 +1,37 @@
+package helloworld.behavioral.iterator;
+
+import java.util.Iterator;
+import java.util.List;
+
+/**
+ * @author yihua.huang@dianping.com
+ */
+public class HelloWorldCharacterIterator implements Iterator<Character> {
+
+    private char[] characters;
+
+    private int size;
+
+    private int index;
+
+    public HelloWorldCharacterIterator(char[] characters) {
+        this.characters = characters;
+        this.size = characters.length;
+        this.index = 0;
+    }
+
+    @Override
+    public boolean hasNext() {
+        return index < size;
+    }
+
+    @Override
+    public Character next() {
+        return characters[index++];
+    }
+
+    @Override
+    public void remove() {
+        throw new UnsupportedOperationException("remove not support!");
+    }
+}

src/main/java/helloworld/structural/composite/CompositeHelloWorld.java

@@ -14,7 +14,7 @@ public class CompositeHelloWorld implements HelloWorld {
 
     private List<HelloWorld> helloWorlds;
 
-    private String lineSeparetor = System.getProperty("line.separator");
+    private String lineSeparator = System.getProperty("line.separator");
 
     public CompositeHelloWorld(HelloWorld... helloWorlds) {
         this.helloWorlds = Arrays.asList(helloWorlds);
@@ -26,7 +26,7 @@ public String helloWorld() {
         for (HelloWorld helloWorld : helloWorlds) {
             helloWorldOuts.add(helloWorld.helloWorld());
         }
-        return StringUtils.join(helloWorldOuts, lineSeparetor);
+        return StringUtils.join(helloWorldOuts, lineSeparator);
     }
 
     public static class DefaultHelloWorld implements HelloWorld{

src/test/java/helloworld/behavioral/PrinterTest.java

@@ -0,0 +1,25 @@
+package helloworld.behavioral;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.powermock.core.classloader.annotations.PrepareForTest;
+import org.powermock.modules.junit4.PowerMockRunner;
+
+import java.io.PrintStream;
+
+import static org.mockito.Mockito.*;
+
+/**
+ * @author yihua.huang@dianping.com
+ */
+public class PrinterTest {
+
+    @Test
+    public void testPrinter() {
+        Printer printer = Printer.instance();
+        PrintStream mockPrintStream = mock(PrintStream.class);
+        when(System.out).thenReturn(mockPrintStream);
+        printer.println("Hello World!");
+        verify(mockPrintStream,times(1)).println("Hello World!");
+    }
+}

src/test/java/helloworld/behavioral/iterator/HelloWorldIteratorTest.java

@@ -0,0 +1,29 @@
+package helloworld.behavioral.iterator;
+
+import org.junit.Test;
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.is;
+
+/**
+ * @author yihua.huang@dianping.com
+ */
+public class HelloWorldIteratorTest {
+
+    @Test
+    public void testHelloWorldIterator(){
+        final String helloIterator = "Hello Iterator!";
+        HelloWorldCharacterIterator helloWorldCharacterIterator = new HelloWorldCharacterIterator(helloIterator.toCharArray());
+        StringBuffer stringBuffer = new StringBuffer();
+        while (helloWorldCharacterIterator.hasNext()){
+            stringBuffer.append(helloWorldCharacterIterator.next());
+        }
+        assertThat(stringBuffer.toString(),is(helloIterator));
+    }
+
+    @Test(expected = UnsupportedOperationException.class)
+    public void testHelloWorldIteratorRemove(){
+        final String helloIterator = "Hello Iterator!";
+        HelloWorldCharacterIterator helloWorldCharacterIterator = new HelloWorldCharacterIterator(helloIterator.toCharArray());
+        helloWorldCharacterIterator.remove();
+    }
+}