public void WhenProtectingNonEmptyPassword_ShouldReturnPasswordProtectedPdf()
                        {
                            // arrange
                            var pdfUtil      = new PdfTestUtils();
                            var templateName = "BootCampForm-v2.pdf";
                            var localPath    = pdfUtil.CreateTemplatePath(templateName);
                            var formFields   = new List <SimplePdfFormField> {
                                new SimplePdfFormField {
                                    Name = "FirstName", Value = "Travis"
                                },
                                new SimplePdfFormField {
                                    Name = "Surname", Value = "Frisinger"
                                },
                                new SimplePdfFormField {
                                    Name = "DateOfBirth", Value = "1981-04-29"
                                },
                            };
                            var pdfService = new PdfRenderingRendering();
                            // act
                            var actual = pdfService
                                         .WithTemplate(templateName, localPath)
                                         .WithFormData(formFields)
                                         .WithPassword("1234")
                                         .Populate();
                            // assert
                            var unsignedBytesLength = pdfUtil.FetchExpectedFileLength("readonly.pdf");

                            actual.Length.Should().NotBe(unsignedBytesLength);
                        }
                    public void WhenInvalidTemplateName_ShouldReturnZeroBytes()
                    {
                        // arrange
                        var pdfUtil      = new PdfTestUtils();
                        var templateName = "BootCampForm-DOESNOTEXIST-v2.pdf";
                        var localPath    = pdfUtil.CreateTemplatePath(templateName);
                        var formFields   = new List <SimplePdfFormField> {
                            new SimplePdfFormField {
                                Name = "FirstName", Value = "Travis"
                            },
                            new SimplePdfFormField {
                                Name = "Surname", Value = "Frisinger"
                            },
                            new SimplePdfFormField {
                                Name = "DateOfBirth", Value = "1981-04-29"
                            },
                        };
                        var pdfService = new PdfRenderingRendering();
                        // act
                        var actual = pdfService
                                     .WithTemplate(templateName, localPath)
                                     .WithFormData(formFields)
                                     .Populate();
                        // assert
                        var expectedLength = 0;

                        actual.Length.Should().Be(expectedLength);
                    }