From 192dbd4fc3b0869c3d12ba42d04509ca6e445ed1 Mon Sep 17 00:00:00 2001
From: JPANZO <jpanzo@bpe.local>
Date: Mon, 7 Feb 2022 21:24:47 +0100
Subject: [PATCH 1/2] Test-Code for CDPlayer-Method [Louder] produced.

---
 .../java/device/cdPlayer/CDPlayerTest.java    | 68 +++++++++----------
 1 file changed, 32 insertions(+), 36 deletions(-)

diff --git a/src/test/java/device/cdPlayer/CDPlayerTest.java b/src/test/java/device/cdPlayer/CDPlayerTest.java
index eb63e35..1248004 100644
--- a/src/test/java/device/cdPlayer/CDPlayerTest.java
+++ b/src/test/java/device/cdPlayer/CDPlayerTest.java
@@ -1,47 +1,43 @@
 package device.cdPlayer;
 
 import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.Arguments;
+import org.junit.jupiter.params.provider.MethodSource;
+import org.mockito.junit.jupiter.MockitoExtension;
 
-import static org.junit.jupiter.api.Assertions.*;
+import java.util.stream.Stream;
 
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.junit.jupiter.api.Assertions.*;
+@ExtendWith(MockitoExtension.class)
 class CDPlayerTest {
-/*
-    @Test
-    void louder() {
-    }
-
-    @Test
-    void quieter() {
-    }
-
-    @Test
-    void getVolume() {
-    }
-
-    @Test
-    void next() {
-    }
-
-    @Test
-    void prev() {
-    }
-
-    @Test
-    void getInfoText() {
-    }
-
-    @Test
-    void getOptions() {
-    }
-
-    @Test
-    void chooseOption() {
-    }
 
-    @Test
-    void play() {
+    @ParameterizedTest
+    @MethodSource("louderTestData")
+    void louderTest(String testName,String testDirection, CDPlayer _cdPlayer,int anzClicks, int expectedResult) {
+        for (int i = 0; i < anzClicks; i++) {
+            _cdPlayer.louder();
+        }
+        if(testDirection.equals("VolumeIncreased")){
+            assertThat(_cdPlayer.getVolume()).describedAs(testName).isEqualTo(expectedResult);
+        }
+        if(testDirection.equals("VolumeHasChanged")){
+            assertThat(_cdPlayer.getVolume()).describedAs(testName).isNotEqualTo(expectedResult);
+        }if(testDirection.equals("VolumeNotDecreased")){
+            assertThat(_cdPlayer.getVolume()).describedAs(testName).isNotEqualTo(expectedResult);
+        }
+    }
+
+    static Stream<Arguments> louderTestData () {
+        CDPlayer cdPlayer=new CDPlayer();
+        return Stream.of(
+                Arguments.of("[getVolume() after 20x louder() ] => VolumeIncreased","VolumeIncreased", cdPlayer, 20, 20),
+                Arguments.of("[getVolume() after 2x louder() ] => VolumeHasChanged","VolumeHasChanged" ,cdPlayer,2,0),
+                Arguments.of("[getVolume() after 5x louder() ] => VolumeDecreased","VolumeNotDecreased", cdPlayer,5,-5)
+        );
     }
 
- */
 
 }
\ No newline at end of file

From a1d31ab7fc5899ab396f296a5b10c0a3210b3fde Mon Sep 17 00:00:00 2001
From: JPANZO <jpanzo@bpe.local>
Date: Mon, 7 Feb 2022 21:30:53 +0100
Subject: [PATCH 2/2] Production-Code for CDPlayer-Method [Louder] produced.

---
 src/main/java/device/cdPlayer/CDPlayer.java | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/main/java/device/cdPlayer/CDPlayer.java b/src/main/java/device/cdPlayer/CDPlayer.java
index 6cc7b77..f66c9d1 100644
--- a/src/main/java/device/cdPlayer/CDPlayer.java
+++ b/src/main/java/device/cdPlayer/CDPlayer.java
@@ -21,7 +21,11 @@ public class CDPlayer implements Device {
 
     @Override
     public void louder() {
-
+        if(volume < 100) {
+            volume += 1;
+        } else {
+            volume = 100;
+        }
     }
 
     @Override
@@ -31,7 +35,7 @@ public class CDPlayer implements Device {
 
     @Override
     public int getVolume() {
-        return 0;
+        return this.volume;
     }
 
     @Override