public void ShouldUpdateDocument()
{
var testDocument = MakeNew(2);
var response = _docsController.Create(testDocument);
var result = Assert.IsType <OkObjectResult>(response.Result);
Assert.NotNull(result.Value);
var newDocument = Assert.IsType <Document>(result.Value);
Assert.Null(newDocument.UpdateTime);
newDocument.Title = "Updated document title";
newDocument.Author = "Updated author";
response = _docsController.Update(newDocument);
result = Assert.IsType <OkObjectResult>(response.Result);
Assert.NotNull(result.Value);
var updatedDocument = Assert.IsType <Document>(result.Value);
Assert.NotNull(updatedDocument.UpdateTime);
Assert.Equal(newDocument.Id, updatedDocument.Id);
Assert.Equal(newDocument.Title, updatedDocument.Title);
Assert.Equal(newDocument.Author, updatedDocument.Author);
}