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36 changes: 36 additions & 0 deletions script.test.js
Original file line number Diff line number Diff line change
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const { JSDOM } = require('jsdom');
const { expect } = require('@jest/globals');
const script = require('./script.js');

describe('generateQR function', () => {
let dom;
let document;
let generateButton;
let textInput;

beforeEach(() => {
dom = new JSDOM('<!doctype html><html><body><input id="text" type="text" value="test"><button id="generateButton">Generate</button><div id="qrcode"></div></body></html>');
document = dom.window.document;
generateButton = document.getElementById("generateButton");
textInput = document.getElementById("text");
});

afterEach(() => {
dom = null;
document = null;
generateButton = null;
textInput = null;
});

it('should throw an error for non-string input', () => {
textInput.value = 123;
generateButton.dispatchEvent(new dom.window.Event('click'));
expect(() => script.generateQR()).toThrowError('Input must be a string');
});

it('should not throw an error for string input', () => {
textInput.value = 'test';
generateButton.dispatchEvent(new dom.window.Event('click'));
expect(() => script.generateQR()).not.toThrowError();
});
});