commit 0c1e1df1f45e6164a7245f856923d3d14d45dce6
Author: Marc Michalsky <m.michalsky@posteo.de>
Date:   Thu May 14 11:08:41 2020 +0200

    Initial Commit

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..b54fb44
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,8 @@
+# Default ignored files
+/shelf/
+/.idea/workspace.xml
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml
+# Editor-based HTTP Client requests
+/httpRequests/
diff --git a/src/gfn/marc/Apfelsaft.java b/src/gfn/marc/Apfelsaft.java
new file mode 100644
index 0000000..4f31c4a
--- /dev/null
+++ b/src/gfn/marc/Apfelsaft.java
@@ -0,0 +1,4 @@
+package gfn.marc;
+
+public class Apfelsaft implements Zutat{
+}
diff --git a/src/gfn/marc/Banane.java b/src/gfn/marc/Banane.java
new file mode 100644
index 0000000..bf964ce
--- /dev/null
+++ b/src/gfn/marc/Banane.java
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+package gfn.marc;
+
+public class Banane implements Zutat {
+}
diff --git a/src/gfn/marc/Cocktail.java b/src/gfn/marc/Cocktail.java
new file mode 100644
index 0000000..ec65ee9
--- /dev/null
+++ b/src/gfn/marc/Cocktail.java
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+package gfn.marc;
+
+import java.util.List;
+
+public class Cocktail {
+
+    public int getAnzahlZutaten() {
+        return 0;
+    }
+}
diff --git a/src/gfn/marc/CocktailMixer.java b/src/gfn/marc/CocktailMixer.java
new file mode 100644
index 0000000..3688de5
--- /dev/null
+++ b/src/gfn/marc/CocktailMixer.java
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+package gfn.marc;
+
+public interface CocktailMixer {
+    void hinzufuegen(Zutat zutat);
+    Cocktail mixen() throws EkligeZutatenKombinationException;
+    int getAnzahlZutaten();
+}
diff --git a/src/gfn/marc/EkligeZutatenKombinationException.java b/src/gfn/marc/EkligeZutatenKombinationException.java
new file mode 100644
index 0000000..d7cc1f3
--- /dev/null
+++ b/src/gfn/marc/EkligeZutatenKombinationException.java
@@ -0,0 +1,4 @@
+package gfn.marc;
+
+public class EkligeZutatenKombinationException extends Exception {
+}
diff --git a/src/gfn/marc/Main.java b/src/gfn/marc/Main.java
new file mode 100644
index 0000000..91e5c87
--- /dev/null
+++ b/src/gfn/marc/Main.java
@@ -0,0 +1,8 @@
+package gfn.marc;
+
+public class Main {
+
+    public static void main(String[] args) {
+	// write your code here
+    }
+}
diff --git a/src/gfn/marc/Milch.java b/src/gfn/marc/Milch.java
new file mode 100644
index 0000000..b4d413e
--- /dev/null
+++ b/src/gfn/marc/Milch.java
@@ -0,0 +1,4 @@
+package gfn.marc;
+
+public class Milch implements Zutat{
+}
diff --git a/src/gfn/marc/StandardCocktailMixer.java b/src/gfn/marc/StandardCocktailMixer.java
new file mode 100644
index 0000000..2e47aa0
--- /dev/null
+++ b/src/gfn/marc/StandardCocktailMixer.java
@@ -0,0 +1,35 @@
+package gfn.marc;
+
+import java.util.Collection;
+
+public class StandardCocktailMixer implements CocktailMixer{
+
+    @Override
+    public void hinzufuegen(Zutat zutat) {
+    }
+
+    @Override
+    public Cocktail mixen() throws EkligeZutatenKombinationException {
+        return null;
+    }
+
+    @Override
+    public int getAnzahlZutaten() {
+        return 0;
+    }
+
+
+
+
+    // gegeben
+    public static <T> boolean enthaelt(Collection<?> collection, Class<T> klasse) {
+        for (Object o : collection) {
+            if (o != null && o.getClass() == klasse) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+}
+
diff --git a/src/gfn/marc/Zutat.java b/src/gfn/marc/Zutat.java
new file mode 100644
index 0000000..f3ed6c4
--- /dev/null
+++ b/src/gfn/marc/Zutat.java
@@ -0,0 +1,4 @@
+package gfn.marc;
+
+public interface Zutat {
+}
diff --git a/test/gfn.marc/CocktailMixerTest.java b/test/gfn.marc/CocktailMixerTest.java
new file mode 100644
index 0000000..ffb9775
--- /dev/null
+++ b/test/gfn.marc/CocktailMixerTest.java
@@ -0,0 +1,53 @@
+package gfn.marc;
+
+import static org.junit.Assert.*;
+
+import org.junit.Before;
+import org.junit.Test;
+
+public class CocktailMixerTest {
+
+    CocktailMixer cocktailMixer;
+
+    @Before
+    public void setUp() {
+        this.cocktailMixer = new StandardCocktailMixer();
+    }
+
+    @Test
+    public void testeCocktailMixer() throws EkligeZutatenKombinationException {
+        Cocktail cocktail = cocktailMixer.mixen();
+        assertNotNull(cocktail);
+    }
+
+    @Test
+    public void testeAnzahlZutatenInMixer() {
+        Banane banene = new Banane();
+        Milch milch = new Milch();
+        cocktailMixer.hinzufuegen(banene);
+        cocktailMixer.hinzufuegen(milch);
+        assertEquals(2, cocktailMixer.getAnzahlZutaten());
+    }
+
+    @Test
+    public void testeAnzahlZutatenInCocktail() throws EkligeZutatenKombinationException {
+        Banane banene = new Banane();
+        Milch milch = new Milch();
+        cocktailMixer.hinzufuegen(banene);
+        cocktailMixer.hinzufuegen(milch);
+        Cocktail cocktail = cocktailMixer.mixen();
+        assertEquals(0, cocktailMixer.getAnzahlZutaten());
+        assertEquals(2, cocktail.getAnzahlZutaten());
+    }
+
+    @Test (expected = EkligeZutatenKombinationException.class)
+    public void testeEkligeZutatenKombination() throws EkligeZutatenKombinationException {
+        Banane banane = new Banane();
+        Apfelsaft apfelsaft = new Apfelsaft();
+        cocktailMixer.hinzufuegen(banane);
+        cocktailMixer.hinzufuegen(apfelsaft);
+        Cocktail cocktail = cocktailMixer.mixen();
+    }
+
+}
+