text: from django.test import RequestFactory
  from django.test.testcases import TestCase
  
  from .rendering import html_to_pdf, render_to_pdf, render_to_pdf_response
  from .views import PDFTemplateView
  
  
  class EasyPDFBasicTestCase(TestCase):
      def setUp(self):
          self.factory = RequestFactory()
          self.template_name = 'easy_pdf/base.html'
  
      def test_pdf_rendering(self):
          content = html_to_pdf('<html><body><div>hello</div></body></html>')
          self.assertEqual(content[:4], b'%PDF')
  
      def test_template_rendering(self):
          content = render_to_pdf(self.template_name, {'greeting': 'hello'})
          self.assertEqual(content[:4], b'%PDF')
  
      def test_response_rendering(self):
          request = self.factory.get('/sample/')
          response = render_to_pdf_response(request, self.template_name, {'greeting': 'hello'})
          self.assertEqual(response.content[:4], b'%PDF')
  
      def test_view_rendering(self):
          request = self.factory.get('/sample/')
          view = PDFTemplateView.as_view(template_name=self.template_name)
          response = view(request)
          self.assertEqual(response.status_code, 200)
          self.assertEqual(response.content[:4], b'%PDF')
  