/// <summary>
/// Some shared validation to prevent image asset types from being added to documents.
/// </summary>
public static IEnumerable <ValidationResult> Validate(IUploadedFile file)
{
if (file != null && !string.IsNullOrWhiteSpace(file.FileName))
{
// Validate extension & mime type
var ext = Path.GetExtension(file.FileName)?.Trim();
if (string.IsNullOrWhiteSpace(ext))
{
yield return(new ValidationResult("The file you're uploading has no file extension.", new string[] { "File" }));
}
else if (FilePathHelper.FileExtensionContainsInvalidChars(ext))
{
yield return(new ValidationResult("The file you're uploading uses an extension containing invalid characters.", new string[] { "File" }));
}
else if ((ImageAssetConstants.PermittedImageTypes.ContainsKey(ext)) ||
(!string.IsNullOrEmpty(file.MimeType) && ImageAssetConstants.PermittedImageTypes.ContainsValue(file.MimeType)))
{
yield return(new ValidationResult("Image files shoud be uploaded in the image assets section.", new string[] { "File" }));
}
// Validate filename
if (string.IsNullOrWhiteSpace(file.FileName))
{
yield return(new ValidationResult("The file you're uploading has no file name.", new string[] { "File" }));
}
else if (string.IsNullOrWhiteSpace(FilePathHelper.CleanFileName(file.FileName)))
{
yield return(new ValidationResult("The file you're uploading has an invalid file name.", new string[] { "File" }));
}
}
}
public void FileExtensionContainsInvalidChars_WhenInvalid_ReturnsTrue(string s)
{
var result = FilePathHelper.FileExtensionContainsInvalidChars(s);
Assert.True(result);
}
public void FileExtensionContainsInvalidChars_WhenNullOrWhitespace_ReturnsFalse(string s)
{
var result = FilePathHelper.FileExtensionContainsInvalidChars(s);
Assert.False(result);
}