private static Dictionary <string, HttpPostedFileBase[]> GetHttpPostedFileDictionary(ControllerContext controllerContext)
{
HttpFileCollectionBase files = controllerContext.HttpContext.Request.Files;
// fast-track common case of no files
if (files.Count == 0)
{
return(_emptyDictionary);
}
// build up the 1:many file mapping
List <KeyValuePair <string, HttpPostedFileBase> > mapping = new List <KeyValuePair <string, HttpPostedFileBase> >();
string[] allKeys = files.AllKeys;
for (int i = 0; i < files.Count; i++)
{
string key = allKeys[i];
if (key != null)
{
HttpPostedFileBase file = HttpPostedFileBaseModelBinder.ChooseFileOrNull(files[i]);
mapping.Add(new KeyValuePair <string, HttpPostedFileBase>(key, file));
}
}
// turn the mapping into a 1:many dictionary
var grouped = mapping.GroupBy(el => el.Key, el => el.Value, StringComparer.OrdinalIgnoreCase);
return(grouped.ToDictionary(g => g.Key, g => g.ToArray(), StringComparer.OrdinalIgnoreCase));
}
public void BindModelThrowsIfControllerContextIsNull() {
// Arrange
HttpPostedFileBaseModelBinder binder = new HttpPostedFileBaseModelBinder();
// Act & assert
ExceptionHelper.ExpectArgumentNullException(
delegate {
binder.BindModel(null, null);
}, "controllerContext");
}
public void BindModelThrowsIfBindingContextIsNull() {
// Arrange
ControllerContext controllerContext = new Mock<ControllerContext>().Object;
HttpPostedFileBaseModelBinder binder = new HttpPostedFileBaseModelBinder();
// Act & assert
ExceptionHelper.ExpectArgumentNullException(
delegate {
binder.BindModel(controllerContext, null);
}, "bindingContext");
}
public void BindModelReturnsNullIfNoFileInputElementInPost() {
// Arrange
Mock<ControllerContext> mockControllerContext = new Mock<ControllerContext>();
mockControllerContext.Setup(c => c.HttpContext.Request.Files["fileName"]).Returns((HttpPostedFileBase)null);
HttpPostedFileBaseModelBinder binder = new HttpPostedFileBaseModelBinder();
ModelBindingContext bindingContext = new ModelBindingContext() { ModelName = "fileName" };
// Act
object result = binder.BindModel(mockControllerContext.Object, bindingContext);
// Assert
Assert.IsNull(result);
}
public void BindModelReturnsEmptyResultIfEmptyFileInputElementInPost() {
// Arrange
Mock<HttpPostedFileBase> mockFile = new Mock<HttpPostedFileBase>();
mockFile.Setup(f => f.ContentLength).Returns(0);
mockFile.Setup(f => f.FileName).Returns(String.Empty);
Mock<ControllerContext> mockControllerContext = new Mock<ControllerContext>();
mockControllerContext.SetupGet(c => c.HttpContext.Request.Files["fileName"]).Returns(mockFile.Object);
HttpPostedFileBaseModelBinder binder = new HttpPostedFileBaseModelBinder();
ModelBindingContext bindingContext = new ModelBindingContext() { ModelName = "fileName" };
// Act
object result = binder.BindModel(mockControllerContext.Object, bindingContext);
// Assert
Assert.IsNull(result);
}
public void BindModelReturnsResultIfFileFound() {
// Arrange
Mock<HttpPostedFileBase> mockFile = new Mock<HttpPostedFileBase>();
mockFile.Setup(f => f.ContentLength).Returns(1234);
mockFile.Setup(f => f.FileName).Returns("somefile");
Mock<ControllerContext> mockControllerContext = new Mock<ControllerContext>();
mockControllerContext.SetupGet(c => c.HttpContext.Request.Files["fileName"]).Returns(mockFile.Object);
HttpPostedFileBaseModelBinder binder = new HttpPostedFileBaseModelBinder();
ModelBindingContext bindingContext = new ModelBindingContext() { ModelName = "fileName" };
// Act
object result = binder.BindModel(mockControllerContext.Object, bindingContext);
// Assert
Assert.IsNotNull(result);
Assert.AreSame(mockFile.Object, result, "Returned file did not match mock file.");
}
