public void Test_PartialColumnUpdate()
{
var dbContext = new SouthSeaDbContext();
var book = dbContext.Books.Find(1);
var originalName = book.Name;
var targetName = "newName";
book.Name = targetName;
book.Author = "yozian";
dbContext.Update(
book,
x => x.Name
);
dbContext.SaveChanges();
var updatedBook = dbContext
.Books
.Where(x => x.Id == 1)
.AsNoTracking()
.First();
Assert.AreEqual(targetName, updatedBook.Name);
Assert.AreEqual(book.Author, updatedBook.Author);
}
public void Setup()
{
var dbContext = new SouthSeaDbContext();
var books = Enumerable.Range(1, 10)
.Select(x => new Book()
{
Name = x.ToString(),
Author = x.ToString("d3")
});
dbContext.AddRange(books);
dbContext.SaveChanges();
}