diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6ef7013..a85e43a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -8,55 +8,6 @@ SET(CMAKE_BUILD_TYPE Debug)
 set (EXECUTABLE_OUTPUT_PATH ${CMAKE_SOURCE_DIR}/bin)
 set (LIBRARY_OUTPUT_PATH ${EXECUTABLE_OUTPUT_PATH})
 
-# add a target to generate API documentation with Doxygen
-find_package(Doxygen)
-if(DOXYGEN_FOUND)
-    configure_file(${CMAKE_CURRENT_SOURCE_DIR}/Doxyfile ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile @ONLY)
-    add_custom_target(doc
-            ${DOXYGEN_EXECUTABLE} ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile
-            WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
-            COMMENT "Generating API documentation with Doxygen" VERBATIM
-            )
-endif(DOXYGEN_FOUND)
-
-
-# Download and unpack googletest at configure time
-configure_file(CMakeLists.txt.in googletest-download/CMakeLists.txt)
-execute_process(COMMAND ${CMAKE_COMMAND} -G "${CMAKE_GENERATOR}" .
-        RESULT_VARIABLE result
-        WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/googletest-download )
-if(result)
-    message(FATAL_ERROR "CMake step for googletest failed: ${result}")
-endif()
-execute_process(COMMAND ${CMAKE_COMMAND} --build .
-        RESULT_VARIABLE result
-        WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/googletest-download )
-if(result)
-    message(FATAL_ERROR "Build step for googletest failed: ${result}")
-endif()
-
-# Prevent overriding the parent project's compiler/linker
-# settings on Windows
-set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
-
-# Add googletest directly to our build. This defines
-# the gtest and gtest_main targets.
-add_subdirectory(${CMAKE_CURRENT_BINARY_DIR}/googletest-src
-        ${CMAKE_CURRENT_BINARY_DIR}/googletest-build
-        EXCLUDE_FROM_ALL)
-
-# The gtest/gtest_main targets carry header search path
-# dependencies automatically when using CMake 2.8.11 or
-# later. Otherwise we have to add them here ourselves.
-if (CMAKE_VERSION VERSION_LESS 2.8.11)
-    include_directories("${gtest_SOURCE_DIR}/include")
-endif()
-
-# Now simply link against gtest or gtest_main as needed. Eg
-#add_executable(example example.cpp)
-#target_link_libraries(example gtest_main)
-#add_test(NAME example_test COMMAND example)
-
 add_subdirectory(src)
 
-set_property(DIRECTORY APPEND PROPERTY ADDITIONAL_MAKE_CLEAN_FILES "bin" "doc" "CMakeFiles" "C" "googletest-build" "googletest-download" "googletest-src" "lib")
+set_property(DIRECTORY APPEND PROPERTY ADDITIONAL_MAKE_CLEAN_FILES "bin" "doc" "CMakeFiles" "C" "lib")
diff --git a/CMakeLists.txt.in b/CMakeLists.txt.in
deleted file mode 100644
index d3c1d55..0000000
--- a/CMakeLists.txt.in
+++ /dev/null
@@ -1,15 +0,0 @@
-cmake_minimum_required(VERSION 2.8.2)
-
-project(googletest-download NONE)
-
-include(ExternalProject)
-ExternalProject_Add(googletest
-        GIT_REPOSITORY    https://github.com/google/googletest.git
-        GIT_TAG           master
-        SOURCE_DIR        "${CMAKE_CURRENT_BINARY_DIR}/googletest-src"
-        BINARY_DIR        "${CMAKE_CURRENT_BINARY_DIR}/googletest-build"
-        CONFIGURE_COMMAND ""
-        BUILD_COMMAND     ""
-        INSTALL_COMMAND   ""
-        TEST_COMMAND      ""
-        )
\ No newline at end of file
diff --git a/Doxyfile b/Doxyfile
deleted file mode 100644
index db8cd15..0000000
--- a/Doxyfile
+++ /dev/null
@@ -1,42 +0,0 @@
-#---------------------------------------------------------------------------
-# Project related configuration options
-#---------------------------------------------------------------------------
-PROJECT_NAME = C/C++
-PROJECT_NUMBER =
-OUTPUT_DIRECTORY = @CMAKE_CURRENT_SOURCE_DIR@/doc
-CREATE_SUBDIRS = NO
-OUTPUT_LANGUAGE = English
-...
-JAVADOC_AUTOBRIEF = YES
-...
-#---------------------------------------------------------------------------
-# Build related configuration options
-#---------------------------------------------------------------------------
-EXTRACT_ALL = NO
-...
-#---------------------------------------------------------------------------
-# configuration options related to the input files
-#---------------------------------------------------------------------------
-INPUT = @CMAKE_CURRENT_SOURCE_DIR@/src/
-FILE_PATTERNS =
-RECURSIVE = YES
-EXCLUDE =
-...
-#---------------------------------------------------------------------------
-# configuration options related to the HTML output
-#---------------------------------------------------------------------------
-GENERATE_HTML = YES
-HTML_OUTPUT = html
-HTML_FILE_EXTENSION = .html
-HTML_HEADER =
-HTML_FOOTER =
-...
-...
-
-GENERATE_LATEX = NO
-#---------------------------------------------------------------------------
-# Configuration::additions related to the search engine
-#---------------------------------------------------------------------------
-SEARCHENGINE = YES
-
-
diff --git a/src/07_STD/CMakeLists.txt b/src/07_STD/CMakeLists.txt
index 659f9c3..3dc8a35 100644
--- a/src/07_STD/CMakeLists.txt
+++ b/src/07_STD/CMakeLists.txt
@@ -1,4 +1,2 @@
 add_executable(07_STD_MP MP/grundgeruest.cpp MP/BinaryOctet.cpp MP/BinaryOctet.h)
-add_executable(07_STD_Testat Testat/grundgeruest.cpp Testat/BinaryOctet.h Testat/BinaryOctet.cpp)
-target_link_libraries(07_STD_Testat gtest_main)
-add_test(NAME 07_STD_Testat COMMAND InsertBinaryOctet)
\ No newline at end of file
+add_executable(07_STD_Testat Testat/grundgeruest.cpp Testat/BinaryOctet.h Testat/BinaryOctet.cpp)
\ No newline at end of file
diff --git a/src/07_STD/Testat/grundgeruest.cpp b/src/07_STD/Testat/grundgeruest.cpp
index 7888893..2fe11ca 100644
--- a/src/07_STD/Testat/grundgeruest.cpp
+++ b/src/07_STD/Testat/grundgeruest.cpp
@@ -5,7 +5,6 @@
 #include <random>
 #include <vector>
 #include <algorithm>
-#include <gtest/gtest.h>
 #include "BinaryOctet.h"
 
 // for println();
@@ -61,7 +60,3 @@ int main() {
         std::cout << binaryOctet << std::endl;
     }
 }
-
-TEST(STD_Testat, InsertBinaryOctet) {
-    ASSERT_EQ(42, 42);
-}
diff --git a/src/08_PTRN/CMakeLists.txt b/src/08_PTRN/CMakeLists.txt
index ecc59ef..66ff7c8 100644
--- a/src/08_PTRN/CMakeLists.txt
+++ b/src/08_PTRN/CMakeLists.txt
@@ -1,2 +1,2 @@
 add_executable(08_PTRN_MP MP/VehicleFactory.cpp MP/VehicleFactory.hpp MP/Vehicle.cpp MP/Vehicle.hpp MP/Car.cpp MP/Car.hpp MP/Truck.cpp MP/Truck.hpp MP/Logger.cpp MP/Logger.hpp MP/main.cpp)
-add_executable(08_PTRN_Testat Testat/main.cpp Testat/Money.cpp Testat/Money.h Testat/Logger.cpp Testat/Logger.hpp Testat/Currency.h Testat/BankAccount.cpp Testat/BankAccount.h Testat/Cash.cpp Testat/Cash.h Testat/Currency.cpp Testat/Coin.cpp Testat/Coin.h Testat/Bill.cpp Testat/Bill.h Testat/CashFactory.cpp Testat/CashFactory.h)
\ No newline at end of file
+add_executable(08_PTRN_Testat Testat/main.cpp Testat/Money.cpp Testat/Money.h Testat/Currency.h Testat/BankAccount.cpp Testat/BankAccount.h Testat/Cash.cpp Testat/Cash.h Testat/Currency.cpp Testat/Coin.cpp Testat/Coin.h Testat/Bill.cpp Testat/Bill.h Testat/CashFactory.cpp Testat/CashFactory.h Testat/Person.cpp Testat/Person.h)
\ No newline at end of file
diff --git a/src/08_PTRN/Testat/BankAccount.cpp b/src/08_PTRN/Testat/BankAccount.cpp
index 4493ff1..c6dac8f 100644
--- a/src/08_PTRN/Testat/BankAccount.cpp
+++ b/src/08_PTRN/Testat/BankAccount.cpp
@@ -1,14 +1,16 @@
 #include "BankAccount.h"
 
-BankAccount::BankAccount(std::string name) : name(std::move(name)) {}
+BankAccount::BankAccount(Person *owner, std::string name) : name(std::move(name)) {
+this->owner = owner;
+}
 
 BankAccount * BankAccount::operator+(Money* money) {
     BankAccount::money = new Money(money->getValue() + getMoney().getValue());
     return this;
 }
 
-bool BankAccount::operator<(BankAccount bankAccount) {
-    return money.getValue() < bankAccount.money.getValue();
+bool BankAccount::operator<(BankAccount * bankAccount) {
+    return money.getValue() < bankAccount->money.getValue();
 }
 
 std::string BankAccount::getName() {
@@ -19,5 +21,9 @@ Money BankAccount::getMoney() {
     return money;
 }
 
+Person *BankAccount::getOwner() {
+    return owner;
+}
+
 
 
diff --git a/src/08_PTRN/Testat/BankAccount.h b/src/08_PTRN/Testat/BankAccount.h
index 12cd8bb..41280ee 100644
--- a/src/08_PTRN/Testat/BankAccount.h
+++ b/src/08_PTRN/Testat/BankAccount.h
@@ -5,16 +5,19 @@
 
 #include "Money.h"
 #include "Cash.h"
+#include "Person.h"
 
 class BankAccount {
 private:
     std::string name;
+    Person * owner;
     Money money;
 public:
-    explicit BankAccount(std::string name);
-    BankAccount* operator+(Money* money);
-    bool operator<(BankAccount bankAccount);
+    explicit BankAccount(Person * owner, std::string name);
+    BankAccount* operator+(Money * money);
+    bool operator<(BankAccount * bankAccount);
     std::string getName();
+    Person * getOwner();
     Money getMoney();
 };
 
diff --git a/src/08_PTRN/Testat/Bill.h b/src/08_PTRN/Testat/Bill.h
index 71feaf5..56a1ee4 100644
--- a/src/08_PTRN/Testat/Bill.h
+++ b/src/08_PTRN/Testat/Bill.h
@@ -13,4 +13,4 @@ public:
 };
 
 
-#endif
+#endif
\ No newline at end of file
diff --git a/src/08_PTRN/Testat/CashFactory.cpp b/src/08_PTRN/Testat/CashFactory.cpp
index 0051730..669bf26 100644
--- a/src/08_PTRN/Testat/CashFactory.cpp
+++ b/src/08_PTRN/Testat/CashFactory.cpp
@@ -8,7 +8,7 @@ int allowedCoins[8] = {1, 2, 5, 10, 20, 50, 100, 200};
 Bill * CashFactory::printBill(int value, Currency currency) {
     auto * iter = std::find(std::begin(allowedBills), std::end(allowedBills), value);
     if(iter == std::end(allowedBills)) {
-        std::cout << "Ungültiger Schein" << std::endl;
+        return nullptr;
     }else {
         std::string serial = randomString(15);
         while(std::find(usedSerials.begin(), usedSerials.end(), serial) != usedSerials.end()) {
@@ -19,6 +19,13 @@ Bill * CashFactory::printBill(int value, Currency currency) {
     }
 }
 
+Coin * CashFactory::printCoin(int value, Currency currency) {
+    auto * iter = std::find(std::begin(allowedCoins), std::end(allowedCoins), value);
+    if(iter == std::end(allowedCoins)) {
+        return nullptr;
+    }else return new Coin(value, currency);
+}
+
 std::string CashFactory::randomString(size_t length) {
     auto randchar = []() -> char {
         const char charset[] =
diff --git a/src/08_PTRN/Testat/CashFactory.h b/src/08_PTRN/Testat/CashFactory.h
index 8b02e7a..a133672 100644
--- a/src/08_PTRN/Testat/CashFactory.h
+++ b/src/08_PTRN/Testat/CashFactory.h
@@ -4,13 +4,15 @@
 #include <string>
 #include <vector>
 #include "Bill.h"
+#include "Coin.h"
 
 class CashFactory {
 private:
     std::vector<std::string> usedSerials;
     std::string randomString(size_t length);
 public:
-    Bill* printBill(int value, Currency currency);
+    Bill * printBill(int value, Currency currency);
+    Coin * printCoin(int value, Currency currency);
 };
 
 
diff --git a/src/08_PTRN/Testat/Coin.cpp b/src/08_PTRN/Testat/Coin.cpp
index 5908b61..77744e8 100644
--- a/src/08_PTRN/Testat/Coin.cpp
+++ b/src/08_PTRN/Testat/Coin.cpp
@@ -2,4 +2,4 @@
 
 Coin::Coin(int value, Currency currency) : Cash(value, currency) {
 
-}
+}
\ No newline at end of file
diff --git a/src/08_PTRN/Testat/Coin.h b/src/08_PTRN/Testat/Coin.h
index b700dec..0ff4dde 100644
--- a/src/08_PTRN/Testat/Coin.h
+++ b/src/08_PTRN/Testat/Coin.h
@@ -10,5 +10,4 @@ public:
     Coin(int value, Currency currency);
 };
 
-
 #endif
diff --git a/src/08_PTRN/Testat/Logger.cpp b/src/08_PTRN/Testat/Logger.cpp
deleted file mode 100644
index 29df18d..0000000
--- a/src/08_PTRN/Testat/Logger.cpp
+++ /dev/null
@@ -1,15 +0,0 @@
-// file Logger.cpp
-#include "Logger.hpp"
-
-Logger* Logger::_theInstance = nullptr;
-
-Logger* Logger::getInstance(){
-  if (!_theInstance){
-    _theInstance = new StdoutLogger();
-  }
-  return _theInstance;
-}
-
-void StdoutLogger::log(std::string message, std::string file, int line){
-  std::cerr << message << " in " << file << " line " << line << std::endl;
-}
diff --git a/src/08_PTRN/Testat/Logger.hpp b/src/08_PTRN/Testat/Logger.hpp
deleted file mode 100644
index 9b3006c..0000000
--- a/src/08_PTRN/Testat/Logger.hpp
+++ /dev/null
@@ -1,19 +0,0 @@
-// file Logger.hpp
-#ifndef Logger_hpp
-#define Logger_hpp
-
-#include <iostream>
-
-class Logger {
-  static Logger* _theInstance;
-public:
-  virtual void log(std::string message, std::string file="", int line=0) = 0;
-  static Logger* getInstance();
-};
-
-class StdoutLogger: public Logger {
-public:
-  void log(std::string message, std::string file="", int line=0);
-};
-
-#endif
diff --git a/src/08_PTRN/Testat/Money.cpp b/src/08_PTRN/Testat/Money.cpp
index 3ceba89..b5d1601 100644
--- a/src/08_PTRN/Testat/Money.cpp
+++ b/src/08_PTRN/Testat/Money.cpp
@@ -18,28 +18,22 @@ Money &Money::operator=(Money *money) {
 
 Money Money::operator+(Money &a) {
     if(currency == a.currency) {
-        return Money();
+        return Money(value + a.value);
     }else return Money(-1, Currency(CurrencyValue::USD));
 }
 
 Money Money::operator-(Money &a) {
-    return Money();
+    if(currency == a.currency) {
+        return Money(value - a.value);
+    }else return Money(-1, Currency(CurrencyValue::USD));
 }
 
 const Money Money::operator++(int) {
-    return Money();
+    return Money(value++);
 }
 
 const Money Money::operator--(int) {
-    return Money();
-}
-
-bool Money::operator==(Money &a) {
-    return false;
-}
-
-bool Money::operator!=(Money &a) {
-    return false;
+    return Money(value--);
 }
 
 Currency Money::getCurrency() {
diff --git a/src/08_PTRN/Testat/Money.h b/src/08_PTRN/Testat/Money.h
index 3b95672..34866e1 100644
--- a/src/08_PTRN/Testat/Money.h
+++ b/src/08_PTRN/Testat/Money.h
@@ -15,8 +15,6 @@ public:
     Money operator-(Money &a);
     const Money operator++(int);
     const Money operator--(int);
-    bool operator==(Money &a);
-    bool operator!=(Money &a);
 
     int getValue();
     Currency getCurrency();
diff --git a/src/08_PTRN/Testat/Person.cpp b/src/08_PTRN/Testat/Person.cpp
new file mode 100644
index 0000000..32ba318
--- /dev/null
+++ b/src/08_PTRN/Testat/Person.cpp
@@ -0,0 +1,11 @@
+#include <utility>
+
+#include "Person.h"
+
+Person::Person(std::string name) : name(std::move(name)){
+
+}
+
+std::string Person::getName() {
+    return name;
+}
diff --git a/src/08_PTRN/Testat/Person.h b/src/08_PTRN/Testat/Person.h
new file mode 100644
index 0000000..d59b0bf
--- /dev/null
+++ b/src/08_PTRN/Testat/Person.h
@@ -0,0 +1,16 @@
+#ifndef C_C_PERSON_H
+#define C_C_PERSON_H
+
+
+#include <string>
+
+class Person {
+private:
+    std::string name;
+public:
+    Person(std::string name);
+    std::string getName();
+};
+
+
+#endif
diff --git a/src/08_PTRN/Testat/main.cpp b/src/08_PTRN/Testat/main.cpp
index 09711fb..570ecce 100644
--- a/src/08_PTRN/Testat/main.cpp
+++ b/src/08_PTRN/Testat/main.cpp
@@ -38,8 +38,13 @@ std::ostream &operator<<(std::ostream &os, Money money) {
     return os;
 }
 
+std::ostream &operator<<(std::ostream &os, Person * person) {
+    os << person->getName();
+    return os;
+}
+
 std::ostream &operator<<(std::ostream &os, BankAccount bankAccount) {
-    os << bankAccount.getName() << ": " << bankAccount.getMoney();
+    os << bankAccount.getOwner() << " " << bankAccount.getName() << ": " << bankAccount.getMoney();
     return os;
 }
 
@@ -48,10 +53,13 @@ std::ostream &operator<<(std::ostream &os, BankAccount bankAccount) {
 int main(int argc, char **argv) {
     std::set<BankAccount*> accounts;
 
-    accounts.insert(new BankAccount("Max Müller"));
-    accounts.insert(new BankAccount("Max Maier"));
-    accounts.insert(new BankAccount("Marius Muller"));
-    accounts.insert(new BankAccount("Test 123"));
+    Person * max = new Person("Max Müller");
+    Person * marius = new Person("Marius Müller");
+
+    accounts.insert(new BankAccount(max, "Konto 1"));
+    accounts.insert(new BankAccount(max, "Konto 2"));
+    accounts.insert(new BankAccount(marius, "Konto 1"));
+    accounts.insert(new BankAccount(marius, "Konto 2"));
 
     auto * cashFactory = new CashFactory();
 
@@ -60,8 +68,13 @@ int main(int argc, char **argv) {
         for (int i = 0; i < 1000; ++i) {
             int rnd = distribution(generator);
             Bill * bill = cashFactory->printBill(rnd, CurrencyValue::USD);
-            //std::cout << *bill << std::endl;
-            BankAccount* res = *bankAccount + bill;
+            Coin * coin = cashFactory->printCoin(rnd, CurrencyValue::USD);
+            if(bill != nullptr) {
+                *bankAccount + bill;
+            }
+            if(coin != nullptr) {
+                *bankAccount + coin;
+            }
         }
         std::cout << *bankAccount << std::endl;
     });