public async Task SaveChangesAsync_only_passes_dirty_entries_to_Database()
{
var passedEntries = new List<IUpdateEntry>();
var database = new Mock<IDatabase>();
database.Setup(s => s.SaveChangesAsync(It.IsAny<IReadOnlyList<IUpdateEntry>>(), It.IsAny<CancellationToken>()))
.Callback<IEnumerable<IUpdateEntry>, CancellationToken>((e, c) => passedEntries.AddRange(e))
.Returns(Task.FromResult(3));
var valueGenMock = new Mock<IValueGeneratorSelector>();
valueGenMock.Setup(m => m.Select(It.IsAny<IProperty>(), It.IsAny<IEntityType>())).Returns(Mock.Of<ValueGenerator>());
var servicesMock = new Mock<IDatabaseProviderServices>();
servicesMock.Setup(m => m.Database).Returns(database.Object);
servicesMock.Setup(m => m.ValueGeneratorSelector).Returns(valueGenMock.Object);
servicesMock.Setup(m => m.ModelSource).Returns(new Mock<ModelSource>(new DbSetFinder(), new CoreConventionSetBuilder())
{ CallBase = true }.Object);
servicesMock
.Setup(m => m.ModelValidator)
.Returns(new LoggingModelValidator(new Logger<LoggingModelValidator>(new LoggerFactory())));
var sourceMock = new Mock<IDatabaseProvider>();
sourceMock.Setup(m => m.IsConfigured(It.IsAny<IDbContextOptions>())).Returns(true);
sourceMock.Setup(m => m.GetProviderServices(It.IsAny<IServiceProvider>())).Returns(servicesMock.Object);
var services = new ServiceCollection();
services.AddEntityFramework();
services.AddInstance(sourceMock.Object);
var serviceProvider = services.BuildServiceProvider();
using (var context = new EarlyLearningCenter(serviceProvider, new DbContextOptionsBuilder().Options))
{
context.Entry(new Category { Id = 1 }).State = EntityState.Unchanged;
context.Entry(new Category { Id = 2 }).State = EntityState.Modified;
context.Entry(new Category { Id = 3 }).State = EntityState.Added;
context.Entry(new Category { Id = 4 }).State = EntityState.Deleted;
Assert.Equal(4, context.ChangeTracker.Entries().Count());
await context.SaveChangesAsync();
}
Assert.Equal(3, passedEntries.Count);
database.Verify(
s => s.SaveChangesAsync(It.IsAny<IReadOnlyList<InternalEntityEntry>>(), It.IsAny<CancellationToken>()),
Times.Once);
}