feat: test toegevoegd base64

frontend/tests/base64/base64ToImage.test.ts

@@ -0,0 +1,24 @@
+import { describe, it, expect, beforeAll } from 'vitest';
+import { convertBase64ToImageSrc } from '../../src/utils/base64ToImage.js';
+import fs from 'fs';
+import path from 'path';
+
+let sampleBase64: string;
+
+beforeAll(() => {
+    // Load base64 sample from text file
+    const filePath = path.resolve(__dirname, 'base64Sample.txt');
+    sampleBase64 = fs.readFileSync(filePath, 'utf8').trim();
+});
+
+describe('convertBase64ToImageSrc', () => {
+    it('should return the same string if it is already a valid data URL', () => {
+        const base64Image = `data:image/png;base64,${sampleBase64}`;
+        expect(convertBase64ToImageSrc(base64Image)).toBe(base64Image);
+    });
+
+    it('should correctly format a raw Base64 string as a PNG image URL', () => {
+        expect(convertBase64ToImageSrc(sampleBase64)).toBe(`data:image/png;base64,${sampleBase64}`);
+    });
+
+});