VS UnitTesting一个FileContentResult-测试时可以生成文件吗

Question

I want to Unit Test a method that returns a FileContentResult of a PDF file. I am doing some tests to check the content type & file name, but it would be great if I could also generate the PDF somehow as part of the test? I currently have a method as follows:

    public FileContentResult ConvertToPDF(int baseClassId)
    {
        try
        {
            return new DocumentWriter().ConvertDocumentToPDFSharp(baseClassId);

        }
        catch (Exception ex)
        {
            Logger.Instance.LogError("Error in Assessments_FormHeaderController ConvertToPDF", ex);
            return new FileContentResult(GetBytes("Error fetching pdf, " + ex.Message + Environment.NewLine + ex.StackTrace), "text/plain");
        }
    }

and I am testing with the following:

    [TestMethod]
    public void ReturnFileContentResult()
    {
        DocumentPDFPrinterController pdfController = new DocumentPDFPrinterController();
        FileContentResult result = pdfController.ConvertToPDF(0);

        Assert.IsTrue(result.ContentType == "application/pdf" && result.FileDownloadName.Contains(".pdf"));
    }

Can I add anything to this text which will create the pdf file in a given location(user downloads?).

Answer 1

Should have done some more investigating before putting the question out there. I have found simply adding the following got the job done for me:

System.IO.File.WriteAllBytes(@"C:\\Users\\username\\Downloads\\Test.pdf", result.FileContents);

That generates my file nicely.