From 29aa121c19fe04d6bf3716be1168a4042243769d Mon Sep 17 00:00:00 2001
From: JPANZO <jpanzo@bpe.local>
Date: Thu, 17 Feb 2022 14:41:34 +0100
Subject: [PATCH] Method loadCDWechseler of CDPlayer tested on
 notRunning=CDWechseler -> shouldThrowAnException.

---
 src/main/java/device/cdPlayer/CDPlayer.java      |  7 ++++++-
 .../CDWechselerNotRunningException.java          |  8 ++++++++
 src/test/java/device/cdPlayer/CDPlayerTest.java  | 16 ++++++++++++++++
 3 files changed, 30 insertions(+), 1 deletion(-)
 create mode 100644 src/main/java/device/cdPlayer/exceptions/CDWechselerNotRunningException.java

diff --git a/src/main/java/device/cdPlayer/CDPlayer.java b/src/main/java/device/cdPlayer/CDPlayer.java
index 89f6ad9..16f9d66 100644
--- a/src/main/java/device/cdPlayer/CDPlayer.java
+++ b/src/main/java/device/cdPlayer/CDPlayer.java
@@ -20,7 +20,7 @@ public class CDPlayer implements Device {
     private String actualPlayTrack="";
     private CD loadedCD=null;
 
-    private CDWechseler cdWechseler;
+    private CDWechseler cdWechseler=null;
     private String activeSource="CDDrive";//or CDWechseler
 
     @Override
@@ -139,6 +139,11 @@ public class CDPlayer implements Device {
 
         return activeSource;
     }
+    public void loadCDWechseler(List<CD>cdList){
+        if(cdWechseler==null||!cdWechseler.isRunning()){
+            throw new CDWechselerNotRunningException();
+        }
+    }
 
     //Getters, Setters und SupportMethods
     public void setCD(CD _loadedCD) {
diff --git a/src/main/java/device/cdPlayer/exceptions/CDWechselerNotRunningException.java b/src/main/java/device/cdPlayer/exceptions/CDWechselerNotRunningException.java
new file mode 100644
index 0000000..a2bb44d
--- /dev/null
+++ b/src/main/java/device/cdPlayer/exceptions/CDWechselerNotRunningException.java
@@ -0,0 +1,8 @@
+package device.cdPlayer.exceptions;
+
+public class CDWechselerNotRunningException extends RuntimeException {
+
+    public CDWechselerNotRunningException() {
+        super("CDWechseler must be active for using.");
+    }
+}
diff --git a/src/test/java/device/cdPlayer/CDPlayerTest.java b/src/test/java/device/cdPlayer/CDPlayerTest.java
index f0ef16a..d159604 100644
--- a/src/test/java/device/cdPlayer/CDPlayerTest.java
+++ b/src/test/java/device/cdPlayer/CDPlayerTest.java
@@ -389,6 +389,22 @@ class CDPlayerTest {
         );
     }
 
+    @ParameterizedTest
+    @MethodSource("loadCDWechselerData")
+    void loadCDWechselerTest(String testName,String cases, CDPlayer _cdPlayer,List<CD>cdList,Exception exception) {
+        Exception newException = assertThrows(exception.getClass(), () -> _cdPlayer.loadCDWechseler(cdList));
+        assertEquals(CDWechselerNotRunningException.class, newException.getClass());
+    }
+    static Stream<Arguments> loadCDWechselerData () {
+        CDPlayer cdPlayer1 = new CDPlayer();
+        String[] audioPlayList=new String[]{"Audio 01","Audio 02","Audio 03","Audio 04","Audio 05"};
+        CD audioCD1=new CD("Audio",audioPlayList);
+        List<CD>CdList1=Arrays.asList(audioCD1);
+
+        return Stream.of(
+                Arguments.of("[loadCDWechseler() by notRunning=CDWechseler ] => shouldThrowAnException", "Case1", cdPlayer1,CdList1,new CDWechselerNotRunningException())
+        );
+    }
 
 
     }
\ No newline at end of file