barcode-tool/src/components/generateBarcode/generateBarcode.test.ts

lightweight npm package that facilitates barcode generation and detection. It leverages the Barcode Detection API for barcode scanning directly in web browsers and provides an intuitive interface for generating various barcode formats. Seamlessly integrat

import JsBarcode from 'jsbarcode';
import { generateBarcode } from './generateBarcode';

// Mocking JsBarcode library
jest.mock('jsbarcode');

describe('generateBarcode', () => {
    afterEach(() => {
        jest.clearAllMocks();
    });

    it('should call JsBarcode with correct arguments', () => {
        const payload = {
            elementId: 'barcodeElement',
            value: '1234567890',
            options: {
                format: 'CODE128',
                width: 2,
                height: 100,
                displayValue: true,
            },
        };

        generateBarcode(payload);

        expect(JsBarcode).toHaveBeenCalledWith('#barcodeElement', '1234567890', {
            format: 'CODE128',
            width: 2,
            height: 100,
            displayValue: true,
        });
    });

    it('should call JsBarcode with default options when options are not provided', () => {
        const payload = {
            elementId: 'barcodeElement',
            value: '1234567890',
        };

        generateBarcode(payload);

        expect(JsBarcode).toHaveBeenCalledWith('#barcodeElement', '1234567890', {});
    });

    it('should call JsBarcode with only required arguments when options are empty', () => {
        const payload = {
            elementId: 'barcodeElement',
            value: '1234567890',
            options: {},
        };

        generateBarcode(payload);

        expect(JsBarcode).toHaveBeenCalledWith('#barcodeElement', '1234567890', {});
    });

    it('should throw an error when the barcode format is not supported', () => {
        const payload = {
            elementId: 'barcodeElement',
            value: '1234567890',
            options: {
                format: 'UNSUPPORTED_FORMAT', // Choose an unsupported format for testing
            },
        };

        expect(() => generateBarcode(payload)).toThrowError('Unsupported barcode format: UNSUPPORTED_FORMAT');
    });
});