Merge branch 'bugfix_branch'

README.txt

@@ -0,0 +1,3 @@
+Selim Eser 2211482: Selim Eser, Selim
+David Groys 3012642: David Groys
+Daniel Zdravkovic 3012893: Daniel Zdravkovic

pom.xml

@@ -28,6 +28,11 @@
             <artifactId>json</artifactId>
             <version>20210307</version>
         </dependency>
+        <dependency>
+            <groupId>commons-codec</groupId>
+            <artifactId>commons-codec</artifactId>
+            <version>1.17.0</version>
+        </dependency>
     </dependencies>
     <build>
         <resources>
@@ -95,6 +100,9 @@
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-pmd-plugin</artifactId>
                 <version>3.22.0</version>
+                <configuration>
+                    <failOnViolation>false</failOnViolation>
+                </configuration>
                 <executions>
                     <execution>
                         <phase>verify</phase>

src/main/java/de/hs_mannheim/domain/Destination.java

@@ -0,0 +1,36 @@
+package de.hs_mannheim.domain;
+
+public class Destination {
+    
+    private String town;
+    private String zip;
+    private double distance_from_user;
+    
+    public Destination(String town,String zip, double distance_from_user) {
+        this.town = town;
+        this.zip = zip;
+        this.distance_from_user = distance_from_user;
+    }
+    
+    public String getTown() {
+        return town;
+    }
+
+    public void setTown(String town) {
+        this.town = town;
+    }
+    
+    public String getZip() {
+        return zip;
+    }
+    public void setZip(String zip) {
+        this.zip = zip;
+    }
+    public double getDistance_from_user() {
+        return distance_from_user;
+    }
+    public void setDistance_from_user(double distance_from_user) {
+        this.distance_from_user = distance_from_user;
+    }
+
+}

src/main/java/de/hs_mannheim/domain/System.java

@@ -7,215 +7,392 @@ import java.net.http.HttpRequest;
 import java.net.http.HttpResponse;
 import java.net.http.HttpResponse.BodyHandlers;
 import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.HashSet;
+import java.util.HashMap;
 import java.util.TreeSet;
 
 import org.apache.commons.codec.binary.Base64;
-import org.apache.poi.xssf.usermodel.XSSFSheet;
-import org.apache.poi.xssf.usermodel.XSSFWorkbook;
 import org.json.JSONObject;
 
 public class System {
 
     private User current_user = new User();
+    private ArrayList<User> all_user = new ArrayList<>();
     private String api_key;
-    private ArrayList<String> distances = new ArrayList<>();
-    private XSSFWorkbook workbook = new XSSFWorkbook();
+    private HashMap<String, Destination> all_destinations = new HashMap<String, Destination>();
 
     public System(String api_key) {
         this.api_key = api_key;
-        createSheet();
+        get_all_user();
     }
 
-    public void set_current_user_zip(String zip){
-        this.current_user.setZip(Integer.parseInt(zip));
+    public void set_current_user_zip(String zip) {
+        this.current_user.setZip(zip);
     }
 
-    public void set_current_user_car_l_100km(double car_l_100km){
+    public void set_current_user_car_l_100km(double car_l_100km) {
         this.current_user.setCar_l_100km(car_l_100km);
     }
 
-    public void set_current_user_car_avg_kmh(double car_avg_kmh){
+    public void set_current_user_car_avg_kmh(double car_avg_kmh) {
         this.current_user.setCar_avg_kmh(car_avg_kmh);
     }
 
-    public void set_current_user_bike_avg_kmh(double bike_avg_kmh){
+    public void set_current_user_bike_avg_kmh(double bike_avg_kmh) {
         this.current_user.setBike_avg_kmh(bike_avg_kmh);
     }
 
-    public void decoding(String string){
-        byte[] binary_data = Base64.decodeBase64(string);
-        string = new String(binary_data);
-    }
-
-    public void encoding(String string){
+    public static String decoding(String string) {
         byte[] binary_data = new byte[string.length()];
-        for(int i = 0; i < string.length(); i++){
+        for (int i = 0; i < string.length(); i++) {
             binary_data[i] = (byte) string.charAt(i);
         }
-        string = Base64.encodeBase64String(binary_data);
+        return new String(Base64.decodeBase64(binary_data));
     }
 
-    public void createSheet(){
-        try
-        {
-            XSSFSheet sheet1 = workbook.createSheet("user_information");
-            FileOutputStream fileOut = new FileOutputStream("workbook.xlsx");
-            workbook.write(fileOut);
-            fileOut.close();
+    public static String encoding(String string) {
+        byte[] binary_data = new byte[string.length()];
+        for (int i = 0; i < string.length(); i++) {
+            binary_data[i] = (byte) string.charAt(i);
         }
-        catch(Exception ex) {}
+        return Base64.encodeBase64String(binary_data);
     }
 
-    public HashSet<User> get_all_user() throws FileNotFoundException, IOException{
-        HashSet<User> all_users = new HashSet<>();
-        File file = new File("workbook.xlsx");
+    public static double parseDouble(String s) throws NumberFormatException {
+        if (s.equals(""))
+            return 0;
+        else
+            return Double.parseDouble(s);
+    }
+
+    public void get_all_user() {
         String[] fileString = new String[8];
 
-        if(file.exists() && file.isFile()){
-            FileReader fileReader = new FileReader(file);
-            BufferedReader bufferedReader = new BufferedReader(fileReader);
-            String path;
+        InputStream inputStream = System.class.getResourceAsStream("/user_data.csv");
+        String path;
 
-            while((path = bufferedReader.readLine()) != null){
+        try (BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream))) {
+            while ((path = reader.readLine()) != null) {
                 fileString = path.split(";");
-                fileString = (String[]) Arrays.stream(fileString)
-                                .map(string -> string.substring(0, string.length()-1))
-                                .toArray();
-                encoding(fileString[1]);
-                all_users.add(new User(fileString[0], fileString[1], fileString[2],
-                        Integer.parseInt(fileString[3]), fileString[4],
+                fileString[1] = decoding(fileString[1]);
+                this.all_user.add(new User(fileString[0], fileString[1], fileString[2],
+                        fileString[3], fileString[4],
                         Double.parseDouble(fileString[5]),
                         Double.parseDouble(fileString[6]),
                         Double.parseDouble(fileString[7])));
             }
+        } catch (Exception e) {
+            //
         }
-        return all_users;
     }
 
-    public boolean sign_in_user(String username, String password){
+    public ArrayList<String> all_user_toString() {
+
+        ArrayList<String> result = new ArrayList<>();
+
+        for (User user : this.all_user) {
+            result.add(user.toString());
+        }
+
+        return result;
+    }
+
+    public boolean sign_in_user(String username, String password) {
+
+        for (User user : this.all_user) {
+            if (user.getUsername().equals(username) && user.getPassword().equals(password)) {
+                current_user = new User(user.getUsername(), user.getPassword(),
+                        user.getHometown(), user.getZip(), user.getCar_name(),
+                        user.getCar_l_100km(), user.getCar_avg_kmh(), user.getBike_avg_kmh());
+
+                all_distances();
+                return true;
+            }
+        }
+        return false;
+    }
+
+    public boolean sign_up_user(String username, String password, String password_authentication, String hometown,
+            String zip,
+            String car_name, String car_l_100kmS, String car_avg_kmhS, String bike_avg_kmhS) {
+
+        double car_l_100km;
+        double car_avg_kmh;
+        double bike_avg_kmh;
+
+        try {
+            car_l_100km = parseDouble(car_l_100kmS);
+            car_avg_kmh = parseDouble(car_avg_kmhS);
+            bike_avg_kmh = parseDouble(bike_avg_kmhS);
+        } catch (NumberFormatException n) {
+            return false;
+        }
+
+        if (username.equals("") || password.equals("") || hometown.equals("") || zip.equals(""))
+            return false;
+
+        if (!password.equals(password_authentication))
+            return false;
+
+        for (User user : this.all_user)
+            if (user.getUsername().equals(username))
+                return false;
+
+        ArrayList<String> mem = search(zip);
+        boolean bool = false;
+
+        for (String line : mem)
+            if (line.split(";")[1].equals(hometown)) {
+                bool = true;
+                break;
+            }
+
+        if (!bool)
+            return false;
+
+        current_user = new User(username, password, hometown, zip, car_name, car_l_100km, car_avg_kmh, bike_avg_kmh);
+
+        this.all_user.add(current_user);
+
+        write_to_file(all_user_toString(), "src/main/resources/user_data.csv");
+        write_to_file(all_user_toString(), "src/test/resources/user_data.csv");
+
+        all_distances();
         return true;
     }
 
-    public boolean sign_up_user(String username, String password, String hometown, int zip, 
-                                String car_name, double car_co2_km, double car_avg_kmh, double bike_avg_kmh){
+    public boolean change_user_details(String username, String password, String hometown, String zip,
+            String car_name, String car_l_100kmS, String car_avg_kmhS, String bike_avg_kmhS) {
+
+        double car_l_100km;
+        double car_avg_kmh;
+        double bike_avg_kmh;
+
+        try {
+            car_l_100km = parseDouble(car_l_100kmS);
+            car_avg_kmh = parseDouble(car_avg_kmhS);
+            bike_avg_kmh = parseDouble(bike_avg_kmhS);
+        } catch (NumberFormatException n) {
+            return false;
+        }
+
+        if (!current_user.getPassword().equals(password))
+            return false;
+
+        if (username.equals("") || hometown.equals("") || zip.equals(""))
+            return false;
+
+        if (!current_user.getUsername().equals(username)) {
+            for (User user : this.all_user)
+                if (user.getUsername().equals(username))
+                    return false;
+        }
+
+        ArrayList<String> mem = search(zip);
+        boolean bool = false;
+
+        for (String line : mem)
+            if (line.split(";")[1].equals(hometown)) {
+                bool = true;
+                break;
+            }
+
+        if (!bool)
+            return false;
+
+        for (int i = 0; i < this.all_user.size(); i++)
+            if (this.all_user.get(i).getUsername().equals(current_user.getUsername()))
+                this.all_user.remove(i);
+
+        write_to_file(all_user_toString(), "src/main/resources/user_data.csv");
+        write_to_file(all_user_toString(), "src/test/resources/user_data.csv");
+
+        this.current_user = new User(username, password, hometown, zip, car_name, car_l_100km, car_avg_kmh,
+                bike_avg_kmh);
+        this.all_user.add(current_user);
+
+        write_to_file(all_user_toString(), "src/main/resources/user_data.csv");
+        write_to_file(all_user_toString(), "src/test/resources/user_data.csv");
+
+        all_distances();
         return true;
+
     }
 
-    public void sign_out_user(){
-        this.distances = new ArrayList<>();
-    }
+    public boolean change_user_password(String old_password, String new_password, String new_password_authentication) {
+        if (!this.current_user.getPassword().equals(old_password))
+            return false;
+
+        if (!new_password.equals(new_password_authentication))
+            return false;
+
+        if(old_password.equals(new_password))
+            return false;
+
+        for (int i = 0; i < this.all_user.size(); i++)
+            if (this.all_user.get(i).getUsername().equals(current_user.getUsername()))
+                this.all_user.remove(i);
+
+        write_to_file(all_user_toString(), "src/main/resources/user_data.csv");
+        write_to_file(all_user_toString(), "src/test/resources/user_data.csv");
+
+        this.current_user.setPassword(new_password);
+        this.all_user.add(current_user);
+
+        write_to_file(all_user_toString(), "src/main/resources/user_data.csv");
+        write_to_file(all_user_toString(), "src/test/resources/user_data.csv");
 
-    public boolean change_user_details(String username, String password, String hometown, int zip, 
-                                String car_name, double car_co2_km, double car_avg_kmh, double bike_avg_kmh){
         return true;
+
     }
 
-    public ArrayList<String> search(String hometown_or_zip){
-        
+    public void write_to_file(ArrayList<String> lines, String file) {
+        try (BufferedWriter writer = new BufferedWriter(new FileWriter(file))) {
+            for (int i = 0; i < lines.size() - 1; i++) {
+                writer.write(lines.get(i));
+                writer.newLine();
+            }
+            writer.write(lines.getLast());
+        } catch (IOException e) {
+            //
+        }
+    }
+
+    public void sign_out_user() {
+        current_user = new User();
+    }
+
+    public String[] getDetails() {
+        return new String[] { current_user.getUsername(), current_user.getHometown(),
+                current_user.getZip(), current_user.getCar_name(),
+                current_user.getCar_l_100km() == 0 ? "" : String.valueOf(current_user.getCar_l_100km()),
+                current_user.getCar_avg_kmh() == 0 ? "" : String.valueOf(current_user.getCar_avg_kmh()),
+                current_user.getBike_avg_kmh() == 0 ? "" : String.valueOf(current_user.getBike_avg_kmh()) };
+    }
+
+    public ArrayList<String> search(String hometown_or_zip) {
+
         TreeSet<String> zip_set = new TreeSet<>();
 
         InputStream inputStream = System.class.getResourceAsStream("/zip.csv");
 
         try (BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream))) {
             String line;
-            while ((line = reader.readLine()) != null && zip_set.size()<200) {
-                if(line.contains(hometown_or_zip)){
-                    line = line.replace("\"", "");
+            while ((line = reader.readLine()) != null && zip_set.size() < 200) {
+                line = line.replace("\"", "");
+                if (line.split(";")[0].toUpperCase().startsWith(hometown_or_zip.toUpperCase()) 
+                    || line.split(";")[1].toUpperCase().startsWith(hometown_or_zip.toUpperCase()))
                     zip_set.add(line);
-                }
             }
-        } catch (Exception e) {}
-        
+        } catch (Exception e) {
+            //
+        }
+
         return new ArrayList<>(zip_set);
     }
 
-    public ArrayList<String> random_destinations_car(){
-        
-        calc_all_distances();
+    public ArrayList<String> random_destinations_car() {
 
-        ArrayList<String> mem = new ArrayList<>();
+        ArrayList<Destination> mem = new ArrayList<>();
         ArrayList<String> result = new ArrayList<>();
+        int random = 0;
 
-        for(int i = 0; i<this.distances.size(); i++){
-            if(Double.parseDouble(this.distances.get(i).split(";")[2])>150)
-                mem.add(this.distances.get(i));
+        for (Destination destination : this.all_destinations.values()) {
+            if (destination.getDistance_from_user() > 150)
+                mem.add(destination);
         }
-        
-        for(int i = 0; i<3; i++)
-            result.add(mem.get((int) (Math.random()*mem.size())));
 
+        for (int i = 0; i < 3; i++) {
+            random = (int) (Math.random() * mem.size());
+            result.add(mem.get(random).getZip() + ";" + mem.get(random).getTown());
+        }
         return result;
     }
 
-    public ArrayList<String> random_destinations_bike(){
-        
-        calc_all_distances();
+    public ArrayList<String> random_destinations_bike() {
 
-        ArrayList<String> mem = new ArrayList<>();
+        ArrayList<Destination> mem = new ArrayList<>();
         ArrayList<String> result = new ArrayList<>();
+        int random = 0;
 
-        for(int i = 0; i<this.distances.size(); i++){
-            if(Double.parseDouble(this.distances.get(i).split(";")[2])<100)
-                mem.add(this.distances.get(i));
+        for (Destination destination : this.all_destinations.values()) {
+            if (destination.getDistance_from_user() < 100)
+                mem.add(destination);
         }
-        
-        for(int i = 0; i<3; i++)
-            result.add(mem.get((int) (Math.random()*mem.size())));
+
+        for (int i = 0; i < 3; i++) {
+            random = (int) (Math.random() * mem.size());
+            result.add(mem.get(random).getZip() + ";" + mem.get(random).getTown());
+        }
+        return result;
+    }
+
+    public String[] destination_details(String destination_zip) {
+        String[] result = new String[7];
+
+        result[0] = weather_forecast(destination_zip)[0]; // Wettervorhersage für die nächsten 3 Tage
+        result[1] = weather_forecast(destination_zip)[1];
+        result[2] = weather_forecast(destination_zip)[2];
+        result[3] = distance(destination_zip); // Entfernung
+        result[4] = travel_time(destination_zip)[0]; // Reisedauer Auto
+        result[5] = calc_l_consumption(destination_zip); // Kraftstoffverbrauch Auto
+        result[6] = travel_time(destination_zip)[1]; // Reisedauer Fahrrad
 
         return result;
     }
 
-    public String[] destination_details(String destination_zip){
-        String[] result = new String[5];
-        
-        result[0] = distance(destination_zip); // Entfernung
-        result[1] = travel_time(destination_zip)[0]; // Reisedauer Auto
-        result[2] = travel_time(destination_zip)[1]; // Reisedauer Fahrrad
-        result[3] = calc_l_consumption(destination_zip); // Kraftstoffverbrauch Auto
-        result[4] = weather_forecast(destination_zip); // Wettervorhersage für die nächsten 3 Tage
+    public String current_weather() {
 
-        return result;
-    }
-
-    public String current_weather(){
-        
         String weather = "";
         double temperature = 1;
 
-        try{
-        HttpClient http_client = HttpClient.newHttpClient();
-        
-        HttpRequest get_request = HttpRequest.newBuilder()
-                                            .uri(new URI("https://api.openweathermap.org/data/2.5/weather?zip="+current_user.getZip()+",de&appid="+api_key+"&units=metric&lang=de"))
-                                            .GET()
-                                            .build();
-        
-        HttpResponse<String> get_response = http_client.send(get_request, BodyHandlers.ofString());
+        try {
+            HttpClient http_client = HttpClient.newHttpClient();
+            HttpRequest get_request;
+            
+            if(current_user.getZip().length()<5){
+                get_request = HttpRequest.newBuilder()
+                    .uri(new URI("https://api.openweathermap.org/data/2.5/weather?q=" + current_user.getHometown()
+                            + ",de&appid=" + api_key + "&units=metric&lang=de"))
+                    .GET()
+                    .build();
+            }
+            
+            else{
+                get_request = HttpRequest.newBuilder()
+                    .uri(new URI("https://api.openweathermap.org/data/2.5/weather?zip=" + current_user.getZip()
+                            + ",de&appid=" + api_key + "&units=metric&lang=de"))
+                    .GET()
+                    .build();
+            }
+            
+            HttpResponse<String> get_response = http_client.send(get_request, BodyHandlers.ofString());
 
-        JSONObject json = new JSONObject(((String)get_response.body()).substring(0,((String) get_response.body()).length()));
-        weather = json.getJSONArray("weather").getJSONObject(0).getString("description");
-        temperature = json.getJSONObject("main").getDouble("temp");
-        } catch (Exception e){}
-        
-        if(weather.equals(""))
+            JSONObject json = new JSONObject(get_response.body());
+            weather = json.getJSONArray("weather").getJSONObject(0).getString("description");
+            temperature = json.getJSONObject("main").getDouble("temp");
+        } catch (Exception e) {
+            //
+        }
+
+        if (weather.equals(""))
             return "Es ist ein Fehler aufgetreten!";
         else
-            return weather + ": " + temperature + " °C";
+            return weather + " " + temperature + "°C";
 
     }
 
-    public String weather_forecast(String destination_zip){
-        
+    public String[] weather_forecast(String destination_zip) {
+
         String weather_day_1 = "";
         String weather_day_2 = "";
         String weather_day_3 = "";
+        String[] result = new String[3];
 
         double temperature_day_1_1 = 1;
         double temperature_day_1_2 = 1;
         double temperature_day_1_3 = 1;
         double temperature_day_1_4 = 1;
+        double temperature_day_1_5 = 1;
 
         TreeSet<Double> temperature_day_1 = new TreeSet<>();
         double temperature_day_1_high = 1;
@@ -225,6 +402,7 @@ public class System {
         double temperature_day_2_2 = 1;
         double temperature_day_2_3 = 1;
         double temperature_day_2_4 = 1;
+        double temperature_day_2_5 = 1;
 
         TreeSet<Double> temperature_day_2 = new TreeSet<>();
         double temperature_day_2_high = 1;
@@ -234,82 +412,196 @@ public class System {
         double temperature_day_3_2 = 1;
         double temperature_day_3_3 = 1;
         double temperature_day_3_4 = 1;
+        double temperature_day_3_5 = 1;
 
         TreeSet<Double> temperature_day_3 = new TreeSet<>();
         double temperature_day_3_high = 1;
         double temperature_day_3_low = 1;
 
+        String day1date = "";
+        String day2date = "";
+        String day3date = "";
 
-        try{
+        try {
             HttpClient http_client = HttpClient.newHttpClient();
+            HttpRequest get_request;
             
-            HttpRequest get_request = HttpRequest.newBuilder()
-                                                .uri(new URI("https://api.openweathermap.org/data/2.5/forecast?zip="+destination_zip+",de&appid="+api_key+"&units=metric&lang=de"))
-                                                .GET()
-                                                .build();
+            if(destination_zip.length()<5){
+                get_request = HttpRequest.newBuilder()
+                    .uri(new URI("https://api.openweathermap.org/data/2.5/forecast?q=" + search(destination_zip).get(0).split(";")[1]
+                            + ",de&appid=" + api_key + "&units=metric&lang=de"))
+                    .GET()
+                    .build();
+            } 
+            else{
+                get_request = HttpRequest.newBuilder()
+                    .uri(new URI("https://api.openweathermap.org/data/2.5/forecast?zip=" + destination_zip
+                            + ",de&appid=" + api_key + "&units=metric&lang=de"))
+                    .GET()
+                    .build();
+            }
             
             HttpResponse<String> get_response = http_client.send(get_request, BodyHandlers.ofString());
 
-            JSONObject json = new JSONObject(((String)get_response.body()).substring(0,((String) get_response.body()).length()));
-            weather_day_1 = json.getJSONArray("list").getJSONObject(11).getJSONArray("weather").getJSONObject(0).getString("description");
-            weather_day_2 = json.getJSONArray("list").getJSONObject(19).getJSONArray("weather").getJSONObject(0).getString("description");
-            weather_day_3 = json.getJSONArray("list").getJSONObject(27).getJSONArray("weather").getJSONObject(0).getString("description");
-            
-            temperature_day_1_1 = json.getJSONArray("list").getJSONObject(8).getJSONObject("main").getDouble("temp");
-            temperature_day_1_2 = json.getJSONArray("list").getJSONObject(10).getJSONObject("main").getDouble("temp");
-            temperature_day_1_3 = json.getJSONArray("list").getJSONObject(12).getJSONObject("main").getDouble("temp");
-            temperature_day_1_4 = json.getJSONArray("list").getJSONObject(14).getJSONObject("main").getDouble("temp");
-        
-            temperature_day_2_1 = json.getJSONArray("list").getJSONObject(16).getJSONObject("main").getDouble("temp");
-            temperature_day_2_2 = json.getJSONArray("list").getJSONObject(18).getJSONObject("main").getDouble("temp");
-            temperature_day_2_3 = json.getJSONArray("list").getJSONObject(20).getJSONObject("main").getDouble("temp");
-            temperature_day_2_4 = json.getJSONArray("list").getJSONObject(22).getJSONObject("main").getDouble("temp");
-        
-            temperature_day_3_1 = json.getJSONArray("list").getJSONObject(24).getJSONObject("main").getDouble("temp");
-            temperature_day_3_2 = json.getJSONArray("list").getJSONObject(26).getJSONObject("main").getDouble("temp");
-            temperature_day_3_3 = json.getJSONArray("list").getJSONObject(28).getJSONObject("main").getDouble("temp");
-            temperature_day_3_4 = json.getJSONArray("list").getJSONObject(30).getJSONObject("main").getDouble("temp");
-        
-        } catch (Exception e){}
-        
+            JSONObject json = new JSONObject(get_response.body());
+
+            int day1_1 = 0;
+            int day1_2 = 0;
+            int day1_3 = 0;
+            int day1_4 = 0;
+            int day1_5 = 0;
+            int day2_1 = 0;
+            int day2_2 = 0;
+            int day2_3 = 0;
+            int day2_4 = 0;
+            int day2_5 = 0;
+            int day3_1 = 0;
+            int day3_2 = 0;
+            int day3_3 = 0;
+            int day3_4 = 0;
+            int day3_5 = 0;
+
+            for (int i = 0; i < 40; i++) {
+
+                if (json.getJSONArray("list").getJSONObject(i).getString("dt_txt").split(" ")[1].startsWith("00")) {
+                    day1_1 = i + 3; // 9 Uhr
+                    day1_2 = day1_1 + 1; // 12 Uhr
+                    day1_3 = day1_2 + 1; // 15 Uhr
+                    day1_4 = day1_3 + 1; // 18 Uhr
+                    day1_5 = day1_4 + 1; // 21 Uhr
+                    break;
+                }
+            }
+
+            for (int i = day1_5; i < 40; i++) {
+
+                if (json.getJSONArray("list").getJSONObject(i).getString("dt_txt").split(" ")[1].startsWith("00")) {
+                    day2_1 = i + 3; // 9 Uhr
+                    day2_2 = day2_1 + 1; // 12 Uhr
+                    day2_3 = day2_2 + 1; // 15 Uhr
+                    day2_4 = day2_3 + 1; // 18 Uhr
+                    day2_5 = day2_4 + 1; // 21 Uhr
+                    break;
+                }
+            }
+
+            for (int i = day2_5 + 1; i < 40; i++) {
+
+                if (json.getJSONArray("list").getJSONObject(i).getString("dt_txt").split(" ")[1].startsWith("00")) {
+                    day3_1 = i + 3; // 9 Uhr
+                    day3_2 = day3_1 + 1; // 12 Uhr
+                    day3_3 = day3_2 + 1; // 15 Uhr
+                    day3_4 = day3_3 + 1; // 18 Uhr
+                    day3_5 = day3_4 + 1; // 21 Uhr
+                    break;
+                }
+            }
+
+            day1date = json.getJSONArray("list").getJSONObject(day1_1).getString("dt_txt").split(" ")[0];
+            day1date = day1date.split("-")[2] + "." + day1date.split("-")[1] + "." + day1date.split("-")[0];
+            day2date = json.getJSONArray("list").getJSONObject(day2_1).getString("dt_txt").split(" ")[0];
+            day2date = day2date.split("-")[2] + "." + day2date.split("-")[1] + "." + day2date.split("-")[0];
+            day3date = json.getJSONArray("list").getJSONObject(day3_1).getString("dt_txt").split(" ")[0];
+            day3date = day3date.split("-")[2] + "." + day3date.split("-")[1] + "." + day3date.split("-")[0];
+
+            weather_day_1 = json.getJSONArray("list").getJSONObject(day1_3).getJSONArray("weather").getJSONObject(0)
+                    .getString("description");
+            weather_day_2 = json.getJSONArray("list").getJSONObject(day2_3).getJSONArray("weather").getJSONObject(0)
+                    .getString("description");
+            weather_day_3 = json.getJSONArray("list").getJSONObject(day3_3).getJSONArray("weather").getJSONObject(0)
+                    .getString("description");
+
+            temperature_day_1_1 = json.getJSONArray("list").getJSONObject(day1_1).getJSONObject("main")
+                    .getDouble("temp");
+            temperature_day_1_2 = json.getJSONArray("list").getJSONObject(day1_2).getJSONObject("main")
+                    .getDouble("temp");
+            temperature_day_1_3 = json.getJSONArray("list").getJSONObject(day1_3).getJSONObject("main")
+                    .getDouble("temp");
+            temperature_day_1_4 = json.getJSONArray("list").getJSONObject(day1_4).getJSONObject("main")
+                    .getDouble("temp");
+            temperature_day_1_5 = json.getJSONArray("list").getJSONObject(day1_5).getJSONObject("main")
+                    .getDouble("temp");
+
+            temperature_day_2_1 = json.getJSONArray("list").getJSONObject(day2_1).getJSONObject("main")
+                    .getDouble("temp");
+            temperature_day_2_2 = json.getJSONArray("list").getJSONObject(day2_2).getJSONObject("main")
+                    .getDouble("temp");
+            temperature_day_2_3 = json.getJSONArray("list").getJSONObject(day2_3).getJSONObject("main")
+                    .getDouble("temp");
+            temperature_day_2_4 = json.getJSONArray("list").getJSONObject(day2_4).getJSONObject("main")
+                    .getDouble("temp");
+            temperature_day_2_5 = json.getJSONArray("list").getJSONObject(day2_5).getJSONObject("main")
+                    .getDouble("temp");
+
+            temperature_day_3_1 = json.getJSONArray("list").getJSONObject(day3_1).getJSONObject("main")
+                    .getDouble("temp");
+            temperature_day_3_2 = json.getJSONArray("list").getJSONObject(day3_2).getJSONObject("main")
+                    .getDouble("temp");
+            temperature_day_3_3 = json.getJSONArray("list").getJSONObject(day3_3).getJSONObject("main")
+                    .getDouble("temp");
+            temperature_day_3_4 = json.getJSONArray("list").getJSONObject(day3_4).getJSONObject("main")
+                    .getDouble("temp");
+            temperature_day_3_5 = json.getJSONArray("list").getJSONObject(day3_5).getJSONObject("main")
+                    .getDouble("temp");
+
+        } catch (Exception e) {
+            //
+        }
+
         temperature_day_1.add(temperature_day_1_1);
         temperature_day_1.add(temperature_day_1_2);
         temperature_day_1.add(temperature_day_1_3);
         temperature_day_1.add(temperature_day_1_4);
+        temperature_day_1.add(temperature_day_1_5);
 
-        temperature_day_1_high = (double) temperature_day_1.toArray()[temperature_day_1.size()-1];
+        temperature_day_1_high = (double) temperature_day_1.toArray()[temperature_day_1.size() - 1];
         temperature_day_1_low = (double) temperature_day_1.toArray()[0];
 
         temperature_day_2.add(temperature_day_2_1);
         temperature_day_2.add(temperature_day_2_2);
         temperature_day_2.add(temperature_day_2_3);
         temperature_day_2.add(temperature_day_2_4);
+        temperature_day_2.add(temperature_day_2_5);
 
-        temperature_day_2_high = (double) temperature_day_2.toArray()[temperature_day_1.size()-1];
+        temperature_day_2_high = (double) temperature_day_2.toArray()[temperature_day_2.size() - 1];
         temperature_day_2_low = (double) temperature_day_2.toArray()[0];
 
         temperature_day_3.add(temperature_day_3_1);
         temperature_day_3.add(temperature_day_3_2);
         temperature_day_3.add(temperature_day_3_3);
         temperature_day_3.add(temperature_day_3_4);
+        temperature_day_3.add(temperature_day_3_5);
 
-        temperature_day_3_high = (double) temperature_day_3.toArray()[temperature_day_1.size()-1];
+        temperature_day_3_high = (double) temperature_day_3.toArray()[temperature_day_2.size() - 1];
         temperature_day_3_low = (double) temperature_day_3.toArray()[0];
 
-        if(weather_day_1.equals("")||weather_day_2.equals("")||weather_day_3.equals(""))
-            return "Es ist ein Fehler aufgetreten!";
-        else
-            return "Morgen: " + weather_day_1 + ": Minimum: " + temperature_day_1_low + " °C" + "; Maximum: " + temperature_day_1_high + " °C\n"
-            + "Übermorgen: " + weather_day_2 + ": Minimum: " + temperature_day_2_low + " °C" + "; Maximum: " + temperature_day_2_high + " °C\n"
-            + "Überübermorgen: " + weather_day_3 + ": Minimum: " + temperature_day_3_low + " °C" + "; Maximum: " + temperature_day_3_high + " °C";
+        if (weather_day_1.equals("") || weather_day_2.equals("") || weather_day_3.equals("")) {
+            result[0] = "Es ist ein Fehler aufgetreten!";
+            result[1] = "Es ist ein Fehler aufgetreten!";
+            result[2] = "Es ist ein Fehler aufgetreten!";
+        } else {
+            result[0] = day1date + ": " + weather_day_1 + " H: " + temperature_day_1_high + "°C" + " T: "
+                    + temperature_day_1_low + "°C";
+            result[1] = day2date + ": " + weather_day_2 + " H: " + temperature_day_2_high + "°C" + " T: "
+                    + temperature_day_2_low + "°C";
+            result[2] = day3date + ": " + weather_day_3 + " H: " + temperature_day_3_high + "°C" + " T: "
+                    + temperature_day_3_low + "°C";
+        }
+
+        return result;
     }
 
-    public String distance(String destination_zip){
-        
+    public boolean all_distances() {
+
         double lon1 = -1;
         double lon2 = -1;
         double lat1 = -1;
         double lat2 = -1;
+        double dLat;
+        double dLon;
+        double a;
+        double distance;
+        double result;
 
         InputStream inputStream = System.class.getResourceAsStream("/zip.csv");
 
@@ -317,75 +609,82 @@ public class System {
             String line;
             while ((line = reader.readLine()) != null) {
                 line = line.replace("\"", "");
-                
-                if(line.split(";")[0].equals(destination_zip)){
-                    lon2 = Double.parseDouble(line.split(";")[2]);
-                    lat2 = Double.parseDouble(line.split(";")[3]);
-                }
 
-                if(line.split(";")[0].equals(""+current_user.getZip())){
+                if (line.split(";")[0].equals(current_user.getZip())) {
                     lon1 = Double.parseDouble(line.split(";")[2]);
                     lat1 = Double.parseDouble(line.split(";")[3]);
                 }
             }
-        } catch (Exception e) {}
-
-        if(lon1==-1||lon2==-1||lat1==-1||lat2==-1)
-            return "Es ist ein Fehler aufgetreten!";
-
-        double dLat = lat2-lat1;
-        double dLon = lon2-lon1;
-
-        double a = Math.pow(Math.sin(Math.toRadians(dLat/2.0)), 2) + Math.pow(Math.sin(Math.toRadians(dLon/2.0)), 2) * Math.cos(Math.toRadians(lat1)) * Math.cos(Math.toRadians(lat2));
-
-        double distance = 6378.388 * 2.0 * Math.atan2(Math.sqrt(a), Math.sqrt(1.0-a));
-
-        return "" + (Math.round((distance * 1.25)*1000)/1000.0) + " km";
-    
-    }
-
-    public void calc_all_distances(){
-
-        if(!this.distances.isEmpty())
-            return;
-
-        InputStream inputStream = System.class.getResourceAsStream("/zip.csv");
-
-        try (BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream))) {
-            String line;
-            while ((line = reader.readLine()) != null) {
-                
-                line = line.replace("\"", "");
-                
-                this.distances.add(line.split(";")[0] + ";" + line.split(";")[1] + ";" + Double.parseDouble(distance(line.split(";")[0]).replace(" km", "")));
-                
-            }
-        } catch (Exception e) {}
-    }
-    
-    public String[] travel_time(String destination_zip){
-        
-        String[] result = new String[2];
-        
-        if(distance(destination_zip).equals("Es ist ein Fehler aufgetreten!")){
-            result[0] = "Es ist ein Fehler aufgetreten!";
-            result[1] = "Es ist ein Fehler aufgetreten!";
-            return result;
+        } catch (Exception e) {
+            //
         }
 
-        result[0] = "" + (Math.round(((Double.parseDouble(distance(destination_zip).replace(" km", "")) / current_user.getCar_avg_kmh()))*1000) / 1000.0) + " h";
-        result[1] = "" + (Math.round(((Double.parseDouble(distance(destination_zip).replace(" km", "")) / current_user.getBike_avg_kmh()))*1000) / 1000.0) + " h";
-        
+        InputStream inputStream2 = System.class.getResourceAsStream("/zip.csv");
+
+        try (BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream2))) {
+            String line;
+            while ((line = reader.readLine()) != null) {
+                line = line.replace("\"", "");
+
+                lon2 = Double.parseDouble(line.split(";")[2]);
+                lat2 = Double.parseDouble(line.split(";")[3]);
+
+                if (lon1 == -1 || lon2 == -1 || lat1 == -1 || lat2 == -1)
+                    return false;
+
+                dLat = lat2 - lat1;
+                dLon = lon2 - lon1;
+
+                a = Math.pow(Math.sin(Math.toRadians(dLat / 2.0)), 2)
+                        + Math.pow(Math.sin(Math.toRadians(dLon / 2.0)), 2) * Math.cos(Math.toRadians(lat1))
+                                * Math.cos(Math.toRadians(lat2));
+
+                distance = 6378.388 * 2.0 * Math.atan2(Math.sqrt(a), Math.sqrt(1.0 - a));
+
+                result = Math.round(distance * 1.25 * 100) / 100.0;
+
+                this.all_destinations.put(line.split(";")[0],
+                        new Destination(line.split(";")[1], line.split(";")[0], result));
+
+            }
+        } catch (Exception e) {
+            //
+        }
+
+        return true;
+    }
+
+    public String distance(String destination_zip) {
+
+        return "" + this.all_destinations.get(destination_zip).getDistance_from_user() + " km";
+
+    }
+
+    public String[] travel_time(String destination_zip) {
+
+        String[] result = new String[2];
+
+        if (current_user.getCar_avg_kmh() == 0)
+            result[0] = "";
+        else
+            result[0] = "" + (Math.round(Double.parseDouble(distance(destination_zip).replace(" km", ""))
+                    / current_user.getCar_avg_kmh() * 100) / 100.0) + " h";
+
+        if (current_user.getBike_avg_kmh() == 0)
+            result[1] = "";
+        else
+            result[1] = "" + (Math.round(Double.parseDouble(distance(destination_zip).replace(" km", ""))
+                    / current_user.getBike_avg_kmh() * 100) / 100.0) + " h";
+
         return result;
     }
 
-    public String calc_l_consumption(String destination_zip){
-        
-        if(distance(destination_zip).equals("Es ist ein Fehler aufgetreten!"))
-            return "Es ist ein Fehler aufgetreten!";
+    public String calc_l_consumption(String destination_zip) {
+
+        if (current_user.getCar_l_100km() == 0)
+            return "";
+        return "" + (Math.round(Double.parseDouble(distance(destination_zip).replace(" km", ""))
+                * current_user.getCar_l_100km() / 100.0 * 100) / 100.0) + " l";
 
-        return "" + (Math.round((Double.parseDouble(distance(destination_zip).replace(" km", "")) * (current_user.getCar_l_100km() / 100.0))*1000)/1000.0) + " l";
-    
     }
 }
-

src/main/java/de/hs_mannheim/domain/User.java

@@ -5,15 +5,15 @@ public class User {
     private String username = "";
     private String password = "";
     private String hometown = "";
-    private int zip;
+    private String zip = "";
     private String car_name = "";
-    private double car_l_100km;
-    private double car_avg_kmh;
-    private double bike_avg_kmh;
+    private double car_l_100km = 0;
+    private double car_avg_kmh = 0;
+    private double bike_avg_kmh = 0;
 
     public User(){}
 
-    public User(String username, String password, String hometown, int zip
+    public User(String username, String password, String hometown, String zip
                 , String car_name, double car_l_100km, double car_avg_kmh, double bike_avg_kmh){
         this.username = username;
         this.password = password;
@@ -49,11 +49,11 @@ public class User {
         this.hometown = hometown;
     }
 
-    public int getZip() {
+    public String getZip() {
         return zip;
     }
 
-    public void setZip(int zip) {
+    public void setZip(String zip) {
         this.zip = zip;
     }
 
@@ -88,4 +88,9 @@ public class User {
     public void setBike_avg_kmh(double bike_avg_kmh) {
         this.bike_avg_kmh = bike_avg_kmh;
     }
+
+    public String toString(){
+        return this.username + ";" + System.encoding(this.password) + ";" + this.hometown + ";" + this.zip + ";" + this.car_name + ";"
+                            + this.car_l_100km + ";" + this.car_avg_kmh + ";" + this.bike_avg_kmh;
+    }
 }

src/main/java/de/hs_mannheim/facade/Application.java

@@ -13,19 +13,25 @@ public class Application {
     }
 
     public boolean sign_in_user(String username, String password){
-        return true;
+        return running_system.sign_in_user(username, password);
     }
 
-    public boolean sign_up_user(String username, String password, String hometown, int zip, 
-                                String car_name, double car_co2_km, double car_avg_kmh, double bike_avg_kmh){
-        return true;
+    public boolean sign_up_user(String username, String password, String password_authentication, String hometown, String zip,
+                                String car_name, String car_co2_km, String car_avg_kmh, String bike_avg_kmh){
+        return running_system.sign_up_user(username, password, password_authentication, hometown, zip, car_name, car_co2_km, car_avg_kmh, bike_avg_kmh);
     }
 
-    public void sign_out_user(){}
+    public void sign_out_user(){
+        running_system.sign_out_user();
+    }
 
-    public boolean change_user_details(String username, String password, String hometown, int zip, 
-                                String car_name, double car_co2_km, double car_avg_kmh, double bike_avg_kmh){
-        return true;
+    public boolean change_user_details(String username, String password, String hometown, String zip,
+                                String car_name, String car_co2_km, String car_avg_kmh, String bike_avg_kmh){
+        return running_system.change_user_details(username, password, hometown, zip, car_name, car_co2_km, car_avg_kmh, bike_avg_kmh);
+    }
+
+    public boolean change_user_password(String old_password, String new_password, String new_password_authentication){
+        return running_system.change_user_password(old_password, new_password, new_password_authentication);
     }
 
     public ArrayList<String> search(String hometown_or_zip){
@@ -48,4 +54,13 @@ public class Application {
         return running_system.current_weather();
     }
 
+    public String[] getDetails(){
+        return running_system.getDetails();
+    }
+
+    public String distance(String zip){
+        return running_system.distance(zip);
+    }
+
+
 }

src/main/resources/user_data.csv

@@ -0,0 +1,2 @@
+Daniel;MTQwMURhbmllbA==;Mannheim;68305;BMW;1.5;50.4;40.2
+David;MTIzRXNlbA==;Mannheim;68161;AMG;10.0;100.0;20.0

src/test/java/de/hs_mannheim/domain/SystemTest.java

@@ -8,82 +8,169 @@ import java.util.ArrayList;
 import org.junit.jupiter.api.Test;
 
 public class SystemTest {
-    
+
     System current_system = new System("35a75437476f12302f72e55d368485db");
-    
-    @Test
-    public void weather_forecast(){
 
-        assertNotEquals("Es ist ein Fehler aufgetreten!",current_system.weather_forecast("68161"));
+    @Test
+    public void weather_forecast() {
+
+        current_system.sign_in_user("David", "123Esel");
+
+        assertNotEquals("Es ist ein Fehler aufgetreten!", current_system.weather_forecast("68161")[0]);
     }
 
     @Test
-    public void current_weather(){
+    public void current_weather() {
 
-        current_system.set_current_user_zip("68161");
+        current_system.sign_in_user("David", "123Esel");
 
-        assertNotEquals("Es ist ein Fehler aufgetreten!",current_system.current_weather());
+        assertNotEquals("Es ist ein Fehler aufgetreten!", current_system.current_weather());
     }
 
     @Test
-    public void search(){
+    public void search() {
 
         ArrayList<String> list = current_system.search("Mannheim");
-        
+
         assertEquals("68159", list.get(0).split(";")[0]);
         assertEquals("68167", list.get(4).split(";")[0]);
 
     }
 
     @Test
-    public void distance(){
+    public void distance() {
 
-        current_system.set_current_user_zip("68161");
-        
-        assertEquals("88.46 km", current_system.distance("60306")); // Frankfurt 
-        assertEquals("581.109 km", current_system.distance("20095")); // Hamburg
-        assertEquals("603.608 km", current_system.distance("10115")); // Berlin
+        current_system.sign_in_user("David", "123Esel");
+
+        assertEquals("88.46 km", current_system.distance("60306")); // Frankfurt
+        assertEquals("581.11 km", current_system.distance("20095")); // Hamburg
+        assertEquals("603.61 km", current_system.distance("10115")); // Berlin
 
     }
 
     @Test
-    public void travel_time(){
+    public void travel_time() {
 
-        current_system.set_current_user_zip("68161");
-        current_system.set_current_user_car_avg_kmh(100);
-        current_system.set_current_user_bike_avg_kmh(20);
-        
-        assertEquals("0.885 h", current_system.travel_time("60306")[0]); // Frankfurt mit Auto
-        assertEquals("4.423 h", current_system.travel_time("60306")[1]); // Frankfurt mit Fahrrad
+        current_system.sign_in_user("David", "123Esel");
 
-        assertEquals("6.036 h", current_system.travel_time("10115")[0]); // Berlin mit Auto
+        assertEquals("0.88 h", current_system.travel_time("60306")[0]); // Frankfurt mit Auto
+        assertEquals("4.42 h", current_system.travel_time("60306")[1]); // Frankfurt mit Fahrrad
+
+        assertEquals("6.04 h", current_system.travel_time("10115")[0]); // Berlin mit Auto
         assertEquals("30.18 h", current_system.travel_time("10115")[1]); // Berlin mit Fahrrad
     }
 
     @Test
-    public void calc_l_consumption(){
+    public void calc_l_consumption() {
 
-        current_system.set_current_user_zip("68161");
-        current_system.set_current_user_car_avg_kmh(100);
-        current_system.set_current_user_car_l_100km(10);
-        
-        assertEquals("8.846 l", current_system.calc_l_consumption("60306")); // Kraftstoffverbrauch nach Frankfurt
-        assertEquals("58.111 l", current_system.calc_l_consumption("20095")); // Kraftstoffverbrauch nach Hamburg
-        assertEquals("60.361 l", current_system.calc_l_consumption("10115")); // Kraftstoffverbrauch nach Berlin
+        current_system.sign_in_user("David", "123Esel");
+
+        assertEquals("8.85 l", current_system.calc_l_consumption("60306")); // Kraftstoffverbrauch nach Frankfurt
+        assertEquals("58.11 l", current_system.calc_l_consumption("20095")); // Kraftstoffverbrauch nach Hamburg
+        assertEquals("60.36 l", current_system.calc_l_consumption("10115")); // Kraftstoffverbrauch nach Berlin
     }
 
     @Test
-    public void random_destinations(){
+    public void random_destinations() {
 
-        current_system.set_current_user_zip("68161");
-     
-        assertEquals(3, current_system.random_destinations_car().size()); // random_destinations_car gibt genau 3 destinations zurück
-        assertEquals(3, current_system.random_destinations_bike().size()); // random destinations_bike gibt genau 3 destinations zurück
+        current_system.sign_in_user("David", "123Esel");
+        ArrayList<String> random_destination_car = current_system.random_destinations_car();
+        ArrayList<String> random_destination_bike = current_system.random_destinations_bike();
 
-        // random_destinations_car gibt nur destinations mit mindestens 150 km Entfernung zurück
-        assertEquals(true, Double.parseDouble(current_system.distance(current_system.random_destinations_car().get(0).split(";")[0]).replace(" km", "")) > 150);
-        // random_destinations_bike gibt nur destinations mit maximal 100 km Entfernung zurück
-        assertEquals(true, Double.parseDouble(current_system.distance(current_system.random_destinations_bike().get(0).split(";")[0]).replace(" km", "")) < 100);
+        assertEquals(3, random_destination_car.size()); // random_destinations_car gibt genau 3 destinations zurück
+        assertEquals(3, random_destination_bike.size()); // random destinations_bike gibt genau 3 destinations zurück
+
+        // random_destinations_car gibt nur destinations mit mindestens 150 km
+        // Entfernung zurück
+        assertEquals(true, Double.parseDouble(
+                current_system.distance(random_destination_car.get(0).split(";")[0]).replace(" km", "")) > 150);
+        // random_destinations_bike gibt nur destinations mit maximal 100 km Entfernung
+        // zurück
+        assertEquals(true, Double.parseDouble(
+                current_system.distance(random_destination_bike.get(0).split(";")[0]).replace(" km", "")) < 100);
     }
 
-}
+    @Test
+    public void encoding() {
+
+        String test_password = "123Esel";
+
+        assertEquals("MTIzRXNlbA==", System.encoding(test_password));
+
+    }
+
+    @Test
+    public void decoding() {
+
+        String test_password = "MTIzRXNlbA==";
+
+        assertEquals("123Esel", System.decoding(test_password));
+
+    }
+
+    @Test
+    public void sign_in_user() {
+
+        assertEquals(true, current_system.sign_in_user("Daniel", "1401Daniel"));
+        assertEquals("Daniel", current_system.getDetails()[0]);
+
+    }
+
+    @Test
+    public void sign_out_user() {
+
+        assertEquals(true, current_system.sign_in_user("David", "123Esel"));
+        assertEquals("David", current_system.getDetails()[0]);
+        current_system.sign_out_user();
+        assertEquals("", current_system.getDetails()[0]);
+
+    }
+
+    @Test
+    public void sign_up_user() {
+        // Username darf nicht doppelt vorkommen!
+        assertEquals(false, current_system.sign_up_user("David", "123Esel", "123Esel", "Mannheim", "68161", "AMG", "10",
+                "300", "20"));
+        assertEquals(true, current_system.sign_up_user("Selim", "Penis69", "Penis69", "Mannheim", "68161", "AMG", "10",
+                "300", "20"));
+        // PLZ muss mit Stadt übereinstimmen
+        assertEquals(false, current_system.sign_up_user("Lukas", "123Esel", "123Esel", "Mannheim", "11105", "AMG", "10",
+                "300", "20"));
+        assertEquals(true, current_system.sign_up_user("Lukas", "123Esel", "123Esel", "Mannheim", "68305", "AMG", "10",
+                "300", "20"));
+
+        assertEquals("Lukas", current_system.getDetails()[0]);
+        current_system.sign_out_user();
+        assertEquals("", current_system.getDetails()[0]);
+        assertEquals(true, current_system.sign_in_user("Lukas", "123Esel"));
+    }
+
+    @Test
+    public void change_user_details() {
+
+        current_system.sign_in_user("David", "123Esel");
+        current_system.change_user_details("Enes", "123Esel", "Mannheim", "68161", "", "", "", "");
+        assertEquals("Enes", current_system.getDetails()[0]);
+        current_system.change_user_details("David", "123Esel", "Mannheim", "68161", "AMG", "10", "100", "20");
+
+    }
+
+    @Test
+    public void change_user_password() {
+
+        current_system.sign_in_user("David", "123Esel");
+        assertEquals(true, current_system.change_user_password("123Esel", "Pizza69", "Pizza69"));
+        assertEquals(true, current_system.change_user_password("Pizza69", "123Esel", "123Esel"));
+        assertEquals(true, current_system.change_user_details("Enes", "123Esel", "Mannheim", "68161", "", "", "", ""));
+        current_system.change_user_details("David", "123Esel", "Mannheim", "68161", "AMG", "10", "100", "20");
+
+        ;
+
+    }
+    /*
+     * Tests auf Basis von user_data.csv:
+     * Daniel;MTQwMURhbmllbA==;Mannheim;68305;BMW;1.5;50.4;40.2
+     * David;MTIzRXNlbA==;Mannheim;68161;AMG;10.0;100.0;20.0
+     */
+
+}

src/test/resources/user_data.csv

@@ -0,0 +1,2 @@
+Daniel;MTQwMURhbmllbA==;Mannheim;68305;BMW;1.5;50.4;40.2
+David;MTIzRXNlbA==;Mannheim;68161;AMG;10.0;100.0;20.0