diff --git a/__tests__/render_home_page.test.js b/__tests__/render_home_page.test.js
new file mode 100644
index 0000000..663eb50
--- /dev/null
+++ b/__tests__/render_home_page.test.js
@@ -0,0 +1,22 @@
+import { render, screen, fireEvent, waitFor } from '@testing-library/react';
+import '@testing-library/jest-dom';
+import Home from "../src/app/page";
+import { customLog, customLogClear } from '../src/app/scripts';
+
+jest.mock('../src/app/scripts', () => ({
+    customLog: jest.fn(),
+    customLogClear: jest.fn(),
+}));
+
+jest.mock('../src/solver/glpk.min.js', () => ({
+    LPF_ECOND: 2,
+}));
+
+test('render home page', () => {
+    // render website
+    render(<Home />);
+
+    // check if text is in document
+    const headingElement = screen.getByText(/OR-Tool/i);  // text search in document
+    expect(headingElement).toBeInTheDocument();
+});
diff --git a/__tests__/scripts.test.js b/__tests__/scripts.test.js
index 7ca3f96..5df2024 100644
--- a/__tests__/scripts.test.js
+++ b/__tests__/scripts.test.js
@@ -1,21 +1,104 @@
-import { render, screen, fireEvent, waitFor } from '@testing-library/react';
-import '@testing-library/jest-dom';
-import Home from "../src/app/page";
-
-jest.mock('../src/app/scripts', () => ({
-    customLog: jest.fn(),
-    customLogClear: jest.fn(),
-}));
+import { render, fireEvent, screen } from '@testing-library/react';
+import { 
+    customLog, 
+    customLogClear, 
+    getTranslation, 
+    isInputValidRegex, 
+    isInputFilled, 
+    downloadLPFormatting, 
+    downloadLP, 
+    calculate_click 
+} from '../src/app/scripts';
+import Home from '../src/app/page'
+import text from '../src/app/lang';
 
+// Mocking GLPKAPI and console log
 jest.mock('../src/solver/glpk.min.js', () => ({
     LPF_ECOND: 2,
 }));
 
-test('render home page', () => {
-    // render website
+// Mocking console.log
+const consoleLogMock = jest.spyOn(console, 'log').mockImplementation(() => {});
+
+beforeEach(() => {
+    document.body.innerHTML = `
+      <div>
+        <select id="language_current">
+          <option value="eng">English</option>
+        </select>
+        <textarea id="objective"></textarea>
+        <textarea id="subject"></textarea>
+        <textarea id="bounds"></textarea>
+        <textarea id="vars"></textarea>
+        <select id="maxminswitch">
+          <option value="maximize">Maximize</option>
+          <option value="minimize">Minimize</option>
+        </select>
+        <div id="out"></div>
+      </div>
+    `;
+    jest.clearAllMocks(); // Clear any previous mocks
+});
+
+test('customLog should append message to output box', () => {
+    const message = 'Test message';
+    customLog(message);
+    const outputElement = document.getElementById('out');
+    expect(outputElement.innerHTML).toContain(message);
+});
+
+test('customLogClear should clear the output box', () => {
+    const message = 'Test message';
+    customLog(message);
+    customLogClear();
+    const outputElement = document.getElementById('out');
+    expect(outputElement.innerHTML).toBe('');
+});
+
+test('getTranslation should return translation based on selected language', () => {
+    const result = getTranslation('header_title');
+    expect(result).toBe(text('eng', 'header_title')); // Assuming text function provides correct translation
+});
+
+test('isInputValidRegex should validate input regex correctly', () => {
+    expect(isInputValidRegex("x + y", "+1 x + 2 y <= 15\n+3 x + 1 y <= 20", "x >= 0\ny >= 0", "x\ny")).toBe(true);
+    expect(isInputValidRegex("x + y", "+1 x + 2 y <= 15\n+3 x + 1 y <= 20", "x >= 0\ny >= 0", "")).toBe(false); // Invalid objective
+});
+
+test('isInputFilled should check for filled inputs', () => {
+    expect(isInputFilled('3x + 5y', 'x + y <= 10', 'x <= 5', 'x\ny')).toBe(true);
+    expect(isInputFilled('', 'x + y <= 10', 'x <= 5', 'x\ny')).toBe(false); // Objective empty
+});
+
+test('downloadLPFormatting should format LP correctly', () => {
+    const formattedLP = downloadLPFormatting('3x + 5y', 'x + y <= 10', 'x <= 5');
+    expect(formattedLP).toContain('obj: 3x + 5y');
+    expect(formattedLP).toContain('Subject To');
+    expect(formattedLP).toContain('Bounds');
+});
+
+test('calculate_click should display "Calculating" in the output box', () => {
     render(<Home />);
 
-    // check if text is in document
-    const headingElement = screen.getByText(/OR-Tool/i);  // text search in document
-    expect(headingElement).toBeInTheDocument();
+    // Spy on customLog and customLogClear to prevent actual logging and check the calls
+    const mockClear = jest.spyOn({ customLogClear }, 'customLogClear').mockImplementation();
+    const mockLog = jest.spyOn({ customLog }, 'customLog').mockImplementation();
+
+    // Set valid inputs
+    document.getElementById('objective').value = '3x + 5y';
+    document.getElementById('subject').value = 'x + y <= 10';
+    document.getElementById('bounds').value = 'x <= 5';
+    document.getElementById('vars').value = 'x\ny';
+
+    // Simuliere den Button-Klick, der die Berechnung startet
+    fireEvent.click(screen.getByText('Calculate'));
+
+    // Check the contents of out box
+    const outputElement = document.getElementById('out');
+    expect(outputElement.innerHTML).toContain('Calculating');
+
+    // Clear mock
+    mockClear.mockRestore();
+    mockLog.mockRestore();
 });
+
diff --git a/src/app/page.tsx b/src/app/page.tsx
index 88b5ed9..332c116 100644
--- a/src/app/page.tsx
+++ b/src/app/page.tsx
@@ -2,12 +2,12 @@
 
 import React, { useState } from 'react';
 import { Box, Button, Output } from "./modules";
-import { calculate_click, downloadLP, import_click } from "./scripts";
+import { calculate_click, downloadLP } from "./scripts";
 import text from "./lang";
 
 export default function Home() {
   const [language, setLanguage] = useState('eng');
-  const [maxminOption, setMaxminOption] = useState('maximize'); // Zustand für den MaxMin-Switch
+  const [maxminOption, setMaxminOption] = useState('maximize');
 
   const tr_hTitle = text(language, 'header_title');
   const tr_hSubtitle = text(language, 'header_subtitle');
@@ -30,7 +30,7 @@ export default function Home() {
   };
 
   const handleMaxMinChange = (event: React.ChangeEvent<HTMLSelectElement>) => {
-    setMaxminOption(event.target.value); // Update den Zustand basierend auf dem Wert des Selects
+    setMaxminOption(event.target.value);
   };
     
   return (
diff --git a/src/app/scripts.ts b/src/app/scripts.ts
index b46dae5..d01f4a7 100644
--- a/src/app/scripts.ts
+++ b/src/app/scripts.ts
@@ -62,7 +62,7 @@ function walltimeStart() {
   return Date.now();
 }
 
-function isInputValidRegex(obj: string | undefined, subj: string | undefined, bounds: string | undefined, vars: string | undefined): boolean {
+export function isInputValidRegex(obj: string | undefined, subj: string | undefined, bounds: string | undefined, vars: string | undefined): boolean {
   customLog("input_checks_start");
 
   // standard case: input is undefined - invalid
@@ -108,7 +108,7 @@ function isInputValidRegex(obj: string | undefined, subj: string | undefined, bo
   return true;
 }
 
-function isInputFilled(obj: string | undefined, subj: string | undefined, bounds: string | undefined, vars: string | undefined) {
+export function isInputFilled(obj: string | undefined, subj: string | undefined, bounds: string | undefined, vars: string | undefined): boolean {
   if (obj == "" || obj == null || obj == undefined) {
     customLog("err_emptyBox");
     return false;
@@ -158,56 +158,6 @@ export function calculate_click() {
     variables = (varsElement as HTMLInputElement).value;
   }
 
-  // let funcs:string[] = functions.split(/;/);
-  // let vars:string[] = variables.split(/;/);
-
-  // let direction = null;
-
-  // let namesVars:string[] = [];
-
-  // let variablesMIP:VariableMIP[];
-  // let variablesLP:VariableLP[];
-
-  // // console.log(vars);
-
-  // for (const decider of vars) {
-
-  //   // match comments
-  //   let regexMatch:RegExpMatchArray|null = decider.match(/#.*/);
-  //   if (regexMatch != null)
-  //     continue;
-
-  //   regexMatch = decider.match(/var/);
-  //   if (regexMatch != null)
-  //     namesVars.push(regexMatch[1]);
-
-
-
-  //   console.log(regexMatch);
-  // }
-
-
-  // for (const decider of funcs) {
-  //   let dir = decider.match(/(min|max) .*/);
-  //   if (direction != null && dir != null) {
-  //     document.getElementById('out').innerHTML = "ERROR: Multiple Functions!";
-  //     return;
-  //   }
-  //   if (direction == null && dir != null) {
-  //     direction = dir[1];
-  //     let test = parseFunction(decider);
-  //     console.log(test?.name);
-  //     variablesLP.
-  //     continue;
-  //   }
-
-  //   console.log(direction);
-
-  //   document.getElementById('out').innerHTML = direction;
-
-  //   console.log(parseFunction(decider));
-
-
   // catch error: empty input field(s)
   if (!isInputFilled(objective, subject, bounds, variables)) return;
 
@@ -225,8 +175,6 @@ export function calculate_click() {
     + "\nGenerals \n" + variables
     + "\nEnd";
 
-  // customLog("<br><br>DEBUGGING<br><br>\nfunctions:<br>" + functions + "<br><br>variables:<br>" + variables + "<br><br>DEBUGGING END<br>");
-
   customLog(getTranslation("run_optimization") + ": \"" + wholeText + "\"");
   customLog("");
   run(wholeText);
@@ -276,7 +224,7 @@ function run(text: string) {
   customLog("");
 }
 
-function downloadLPFormatting(objective: any, subject: any, bounds: any) {
+export function downloadLPFormatting(objective: any, subject: any, bounds: any) {
   customLog(getTranslation("downloadPrepFileString"));
   customLog("");
 
@@ -294,7 +242,6 @@ function downloadLPFormatting(objective: any, subject: any, bounds: any) {
   const header = "\\ Your problem\n";
 
   //  format objective
-
   const objectiveFunction = operator + `\n obj: ${formattedObjective}\n`;
 
   // turn each subject into a single line
@@ -358,41 +305,3 @@ export function downloadLP() {
 
   downloadProblemDownload(exportString);
 }
-
-// Irgend ein Interface
-// document.getElementById('out').innerHTML = funcs;
-
-// output.innerHTML = functions.innerHTML;
-
-// createProblemMIP();
-
-// LPAPI.default();
-
-
-export function import_click() {
-  console.log("importing");
-}
-
-
-// export function export_click() {
-//   console.log("Exporting...");
-
-// }
-
-// function parseFunction(toParse: string) {
-//   var regex = toParse.match(/([a-zA-Z][a-zA-Z0-9]*):/);
-//   if (regex == null)
-//     return;
-//   var name = regex[1];
-
-//   regex = toParse.match(/(?:([0-9]*) *\* *([a-zA-Z][a-zA-Z0-9]*))/g);
-
-//   let coefs:number[] = [];
-//   let vars:string[] = [];
-
-//   for (const rg of regex) {
-//     coefs.push(+rg.match(/([0-9]+)/g));
-//     vars.push(rg.match(/([a-zA-Z][a-zA-Z0-9]*)/g)[0]);
-//   }
-//   return {name, coefs, vars};
-// }