-implemented getLastException Method for all classes

- implemented RobotMagicValueException for speak and think
- implemented RobotIllegalStateException for the number 42
- implemented tests for the above 3 points

src/main/java/roboter/C3PO.java

@@ -1,14 +1,20 @@
 package roboter;
 
 import roboter.exceptions.RobotException;
+import roboter.exceptions.RobotIllegalStateException;
+import roboter.exceptions.RobotMagicValueException;
 
+import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.List;
+import java.util.Objects;
 import java.util.stream.Collectors;
 
 public class C3PO implements Robot {
     private int id;
     private String name;
-    private boolean isPowerOn=false;
+    private boolean isPowerOn = true;
+    ArrayList<RobotException> exceptionList=new ArrayList<>();
 
     public C3PO(int id, String name) {
         this.id = id;
@@ -42,31 +48,56 @@ public C3PO(int id, String name){
 
     @Override
     public RobotException getLastException() {
+        if (!exceptionList.isEmpty()){
+            return exceptionList.get(exceptionList.size() - 1);
+
+        }
         return null;
     }
 
     @Override
-    public String speak(int[] zahlen) throws RobotException {
+    public String speak(int[] zahlen) throws RobotException, RobotMagicValueException {
-
+        if(!isPowerOn){
+            var ex=new RobotIllegalStateException(this);
+            exceptionList.add(ex);
+            throw ex;
+        }
+        if (Arrays.stream(zahlen).anyMatch(value -> value ==42)){
+            var exc= new RobotMagicValueException(this);
+            exceptionList.add(exc);
+            throw exc;
+        }
         var sortiert = think(zahlen);
 
         return arrayFormatieren(sortiert);
     }
 
-    private String arrayFormatieren(int[] zahlen){
+    private String arrayFormatieren(int[] zahlen) throws RobotMagicValueException {
+
         var ergebnis = Arrays.stream(zahlen)
                 .boxed()
                 .map(String::valueOf)
                 .collect(Collectors.joining(";"));
         return ergebnis;
     }
+
     @Override
     public int[] think(int[] zahlen) throws RobotException {
+        if(!isPowerOn){
+            var ex=new RobotIllegalStateException(this);
+            exceptionList.add(ex);
+            throw ex;
+        }
+        if (Arrays.stream(zahlen).anyMatch(value -> value ==42)){
+            var exc= new RobotMagicValueException(this);
+            exceptionList.add(exc);
+            throw exc;
+        }
         int n = zahlen.length;
         for (int i = 1; i < n; ++i) {
             int key = zahlen[i];
             int j = i - 1;
-            while (j >= 0 && zahlen[j] < key) {
+            while (j >= 0 && zahlen[j] > key) {
                 zahlen[j + 1] = zahlen[j];
                 j = j - 1;
             }

src/main/java/roboter/Nexus6.java

@@ -50,7 +50,11 @@ public class Nexus6 implements Robot {
 
     @Override
     public RobotException getLastException()    {
+        if (!exceptionList.isEmpty()){
             return exceptionList.get(exceptionList.size() - 1);
+
+        }
+        return null;
     }
 
     @Override

src/main/java/roboter/R2D2.java

@@ -1,14 +1,18 @@
 package roboter;
 
 import roboter.exceptions.RobotException;
+import roboter.exceptions.RobotIllegalStateException;
+import roboter.exceptions.RobotMagicValueException;
 
+import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.stream.Collectors;
 
 public class R2D2 implements Robot {
     private int id;
     private String name;
-    private boolean isPowerOn;
+    private boolean isPowerOn=true;
+    ArrayList<RobotException> exceptionList=new ArrayList<>();
 
     public R2D2(int id, String name){
         this.id=id;
@@ -43,12 +47,25 @@ public class R2D2 implements Robot {
 
     @Override
     public RobotException getLastException() {
+        if (!exceptionList.isEmpty()){
+            return exceptionList.get(exceptionList.size() - 1);
+
+        }
         return null;
     }
 
     @Override
-    public String speak(int[] zahlen) throws RobotException {
+    public String speak(int[] zahlen) throws RobotException, RobotMagicValueException {
-
+        if(!isPowerOn){
+            var ex=new RobotIllegalStateException(this);
+            exceptionList.add(ex);
+            throw ex;
+        }
+        if (Arrays.stream(zahlen).anyMatch(value -> value ==42)){
+            var exc= new RobotMagicValueException(this);
+            exceptionList.add(exc);
+            throw exc;
+        }
         var sortiert = think(zahlen);
 
         return arrayFormatieren(sortiert);
@@ -62,7 +79,17 @@ public class R2D2 implements Robot {
         return ergebnis;
     }
     @Override
-    public int[] think(int[] zahlen) throws RobotException {
+    public int[] think(int[] zahlen) throws RobotException, RobotMagicValueException {
+        if(!isPowerOn){
+            var ex=new RobotIllegalStateException(this);
+            exceptionList.add(ex);
+            throw ex;
+        }
+        if (Arrays.stream(zahlen).anyMatch(value -> value ==42)){
+            var exc= new RobotMagicValueException(this);
+            exceptionList.add(exc);
+            throw exc;
+        }
         for (int i = 0; i < zahlen.length - 1; i++) {
             for (int j = i + 1; j < zahlen.length; j++) {
                 if (zahlen[i] > zahlen[j]) {

src/main/java/roboter/RobotInstructions.java

@@ -35,7 +35,7 @@ public interface RobotInstructions {
      * @throws RobotException wenn der Roboter in einem ungültigen Zustand ist,
      *             oder das Array nicht seinen Vorstellungen entspricht.
      */
-    public String speak(int[] zahlen) throws RobotException;
+    public String speak(int[] zahlen) throws RobotException, RobotMagicValueException;
 
     /**
      * Sortiert ein Array von Zahlen. Die Reihenfolge hängt von dem Typ des
@@ -46,5 +46,5 @@ public interface RobotInstructions {
      * @throws RobotException wenn der Roboter in einem ungültigen Zustand ist,
      *             oder das Array nicht seinen Vorstellungen entspricht.
      */
-    public int[] think(int[] zahlen) throws RobotException;
+    public int[] think(int[] zahlen) throws RobotException, RobotMagicValueException;
 }

src/main/java/roboter/exceptions/RobotMagicValueException.java

@@ -1,4 +1,9 @@
 package roboter.exceptions;
 
-public class RobotMagicValueException {
+import roboter.Robot;
+
+public class RobotMagicValueException extends RobotException {
+    public RobotMagicValueException(Robot robot) {
+        super(robot.getName());
+    }
 }

src/test/java/roboter/C3PoSortierungTest.java

@@ -0,0 +1,20 @@
+package roboter;
+
+import org.junit.Assert;
+import org.junit.Test;
+import roboter.exceptions.RobotException;
+
+public class C3PoSortierungTest {
+
+    @Test
+    public void sortieren() throws RobotException {
+        var list = new int[]{12,6,7,10,18,2};
+        Robot robot=  RobotFactory.getRobot(Typ.C3PO,"roboter2");
+
+
+        assert robot != null;
+        Assert.assertEquals("2;6;7;10;12;18",robot.speak(list));
+    }
+
+
+}

src/test/java/roboter/ExceptionTest.java

@@ -17,6 +17,31 @@ public class ExceptionTest {
 
 
     }
+    @Test
+    public void powerOffSpeak(){
+        Robot robot=RobotFactory.getRobot(Typ.C3PO,"dfg");
+        robot.triggerPowerSwitch();
+
+        Assert.assertThrows(RobotIllegalStateException.class,()->{
+            robot.speak(new int[8]);
+        });
+        Robot robot2=RobotFactory.getRobot(Typ.R2D2,"dfg");
+        robot2.triggerPowerSwitch();
+        Assert.assertThrows(RobotIllegalStateException.class,()->{
+            robot2.speak(new int[8]);
+        });
+
+        Assert.assertThrows(RobotIllegalStateException.class,()->{
+            robot.think(new int[8]);
+        });
+
+        Assert.assertThrows(RobotIllegalStateException.class,()->{
+            robot2.think(new int[8]);
+        });
+    }
+
+
+
     @Test
     public void testNexus6Trigger(){
         Nexus6 robot = Nexus6.getInstance();

src/test/java/roboter/GetLastExceptionTest.java

@@ -0,0 +1,44 @@
+package roboter;
+
+import org.junit.Assert;
+import org.junit.Test;
+import roboter.exceptions.RobotIllegalStateException;
+import roboter.exceptions.RobotMagicValueException;
+
+import java.util.ArrayList;
+
+public class GetLastExceptionTest {
+    @Test
+    public void testGetLastExcetion(){
+        int[]zahlen=new int[]{1,3,5,42};
+        Robot robot= RobotFactory.getRobot(Typ.C3PO,"ukzfiouz");
+        Assert.assertThrows(RobotMagicValueException.class,()->{
+            robot.speak(zahlen);
+        });
+        Assert.assertThrows(RobotMagicValueException.class,()->{
+            robot.think(zahlen);
+        });
+        Assert.assertTrue(robot.getLastException() instanceof RobotMagicValueException);
+
+        Robot robot1= RobotFactory.getRobot(Typ.R2D2,"ukzfiouz");
+        Assert.assertThrows(RobotMagicValueException.class,()->{
+            robot1.speak(zahlen);
+        });
+        Assert.assertThrows(RobotMagicValueException.class,()->{
+            robot1.think(zahlen);
+        });
+        Assert.assertTrue(robot1.getLastException() instanceof RobotMagicValueException);
+
+        Robot robot2= RobotFactory.getRobot(Typ.Nexus6,"ukzfiouz");
+        Assert.assertThrows(RobotIllegalStateException.class,()->{
+            robot2.speak(zahlen);
+        });
+        Assert.assertThrows(RobotIllegalStateException.class,()->{
+            robot2.think(zahlen);
+        });
+        Assert.assertTrue(robot2.getLastException() instanceof RobotIllegalStateException);
+    }
+
+
+
+}

src/test/java/roboter/R2D2Test.java

@@ -4,6 +4,7 @@ import org.junit.*;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.DynamicNode;
 import roboter.exceptions.RobotException;
+import roboter.exceptions.RobotMagicValueException;
 
 import java.io.ByteArrayOutputStream;
 import java.io.PrintStream;
@@ -14,26 +15,9 @@ import java.util.Properties;
 
 public class R2D2Test<SystemOutRule, OutputCapture> {
 
-    private final ByteArrayOutputStream out = new ByteArrayOutputStream();
-    private final ByteArrayOutputStream err = new ByteArrayOutputStream();
-    private final PrintStream originalOut = System.out;
-    private final PrintStream originalErr = System.err;
-
-    @Before
-    public void setStreams() {
-        System.setOut(new PrintStream(out));
-        System.setErr(new PrintStream(err));
-    }
-
-    @After
-    public void restoreInitialStreams() {
-        System.setOut(originalOut);
-        System.setErr(originalErr);
-    }
-
 
     @Test
-    public void sortieren() throws RobotException {
+    public void sortieren() throws RobotException, RobotMagicValueException {
         var list = new int[]{12,6,7,10,18,2};
         Robot robot=  RobotFactory.getRobot(Typ.R2D2,"roboter2");