From c477b8d55c2db60e61f5e7ebb0b69b45e81fe323 Mon Sep 17 00:00:00 2001
From: ssandupatla <58558770+ssandupatla@users.noreply.github.com>
Date: Fri, 7 Jul 2023 16:02:48 +0530
Subject: [PATCH] Update ComponentToPrint.test.js

---
 .../ComponentToPrint/ComponentToPrint.test.js | 50 ++++++++++++-------
 1 file changed, 33 insertions(+), 17 deletions(-)

diff --git a/src/components/ComponentToPrint/ComponentToPrint.test.js b/src/components/ComponentToPrint/ComponentToPrint.test.js
index 0854a249..2537a71c 100644
--- a/src/components/ComponentToPrint/ComponentToPrint.test.js
+++ b/src/components/ComponentToPrint/ComponentToPrint.test.js
@@ -1,32 +1,48 @@
 import React from 'react';
-import { render } from '@testing-library/react';
+import { render, screen } from '@testing-library/react';
+import { Parser } from 'html-to-react';
 import ComponentToPrint from './ComponentToPrint';
 
-// Mock the react-barcode library
 jest.mock('react-barcode', () => {
   return jest.fn().mockImplementation(() => <div data-testid="barcode-component" />);
 });
 
 describe('ComponentToPrint', () => {
   const templateFnMock = jest.fn();
-  const dataSourceMock = {};
-
+  const templateFn = jest.fn(() => '<barcode>123456</barcode>');
+  const dataSource = { 'request':1 };
+  const parser = new Parser();
   beforeEach(() => {
     templateFnMock.mockClear();
   });
-
-  it('renders without crashing', () => {
-    render(<ComponentToPrint templateFn={templateFnMock} dataSource={dataSourceMock} />);
+  it('should handle null result from parseWithInstructions', () => {
+    const originalParseWithInstructions = parser.parseWithInstructions;
+    parser.parseWithInstructions = jest.fn(() => null);
+    render(<ComponentToPrint dataSource={dataSource} templateFn={templateFn} />);
+    expect(screen.queryByTestId('barcode')).not.toBeInTheDocument();
+    parser.parseWithInstructions = originalParseWithInstructions;
   });
-
-  it('renders a Barcode component when encountering a "barcode" tag in the template', () => {
-    const templateFn = jest.fn(() => '<barcode>123456</barcode>');
-    const dataSource = {};
-
-    const { getByTestId } = render(<ComponentToPrint templateFn={templateFn} dataSource={dataSource} />);
-
-    const barcodeComponent = getByTestId('barcode-component');
-
-    expect(barcodeComponent).toBeInTheDocument();
+  it('should handle empty template string', () => {
+    const emptyTemplateFn = jest.fn(() => null);
+    const { container } = render(<ComponentToPrint dataSource={dataSource} templateFn={emptyTemplateFn} />);
+    expect(container.firstChild).toBeNull();
+  });
+  it('should process the barcode rule with empty string', () => {
+    const mockBarcodeValue = '123456789';
+    const emptyString = '';
+    const mockComponentStr = `<div><barcode>${mockBarcodeValue}</barcode><barcode>${emptyString}</barcode></div>`;
+    templateFn.mockReturnValue(mockComponentStr);
+    render(<ComponentToPrint dataSource={dataSource} templateFn={templateFn} />);
+    const barcodeElement = screen.getAllByTestId('barcode-component')[0];
+    expect(barcodeElement).toBeInTheDocument();
+  });
+  it('should process the barcode rule with data', () => {
+    const originalParseWithInstructions = parser.parseWithInstructions;
+    const mockParsedComponent = <div data-testid="mock-component">Mock Component</div>;
+    parser.parseWithInstructions = jest.fn(() => mockParsedComponent);
+    render(<ComponentToPrint dataSource={dataSource} templateFn={templateFn} />);
+    const emptyBarcodeElement = screen.getAllByTestId('barcode-component')[1];
+    expect(emptyBarcodeElement).toBeInTheDocument();
+    parser.parseWithInstructions = originalParseWithInstructions;
   });
 });