adding unit test for rendering site and fixing LP export issue (#28)

* Initial Push

Inititial project state

* Static demo version

* static demo site - added variables

a

* first_implementation

* Updated UI, Improved Style to be more "Reactly", added Functionality

* add parsing functions

* change folder

* Import/Export Prototype

* Adding "reactjs-popup" to package,json

* Adding GLPK source

* Rough implementation of solver + example

* Show solution in output

* example 2 + popup lib

* removing import button

This feature won't be needed in this state of the project and might come back later. Right now it serves no functional purpose.

* Removing "Popout" button

This feature won't be needed in this state of the project and might come back later. Right now it serves no functional purpose.

* Updating Logs

Now the site displays all logs created with customLog(STRING). Logs can be cleared with customLogClear();

* Adding walltime

Can be called using:

Start:
function walltimeStart() {
returns Date.now();

Stop:
function walltimeStopAndPrint(startpoint: number) {
Add startpoint as argument.
It prints the elapsed time using customLog()

* Adding duals ouput

* Adding glpk.js package

required dependency

* adding LP format export and fixing a few errors

* fixing further errors

* adding automatic build

* Moving files to correct folders

* Update nextjs.yml

* Updating README and .gitignore

README:
- added installation instructions
- added troubleshooting

gitignore:
- skipping Writerside and .idea folders

* Update LICENCE.txt

We are required to use the same license. See https://github.com/hgourvest/node-glpk/blob/master/LICENSE

* Updating icon

* Adding RegEx input checks and updating text box explanations

* Update README.md

Updating license info

Signed-off-by: SinusFox <61253950+SinusFox@users.noreply.github.com>

* Deleting license to recreate proper license

* Update layout.tsx

fixing typo

Signed-off-by: SinusFox <61253950+SinusFox@users.noreply.github.com>

* Fixing word issue

English has some false friends... like the German "Enter" is actually return in English.

* Updatint License

* Fixing design issue and updating license link

* Fixing typo in log

* Fixing white mode

* adding translations 1/2

UI Translations

Coming in 2/2: Output translations

* adding output translations

* adding minimize button

* adding unit test for rendering home page

* fixing maxmin on lp export

* Update .gitignore

* Update .gitignore

* Update scripts.ts

* Update scripts.ts

* Update README.md

* adding tests

---------

Signed-off-by: SinusFox <61253950+SinusFox@users.noreply.github.com>
Co-authored-by: moebiusl <lucas.moebius@icloud.com>
Co-authored-by: Marcel Pöppe <marcel.poeppe@gmail.com>

__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();
+});