public void Detects_principal_key_change()
{
var model = BuildModel();
var configuration = TestHelpers.CreateContextConfiguration(model);
var stateManager = configuration.Services.StateManager;
var entityType = model.GetEntityType(typeof(Category));
var keyProperty = entityType.GetProperty("PrincipalId");
var category = new Category { Id = -1, PrincipalId = 77 };
var principalEntry = stateManager.StartTracking(stateManager.GetOrCreateEntry(category));
principalEntry.RelationshipsSnapshot[keyProperty] = 77;
principalEntry.EntityState = EntityState.Added;
var notifierMock = new Mock<StateEntryNotifier>();
var changeDetector = new ChangeDetector(configuration, notifierMock.Object);
Assert.Same(principalEntry, stateManager.TryGetEntry(new SimpleEntityKey<int>(entityType, -1)));
category.PrincipalId = 78;
changeDetector.PropertyChanged(principalEntry, keyProperty);
notifierMock.Verify(m => m.PrincipalKeyPropertyChanged(principalEntry, keyProperty, 77, 78));
Assert.Equal(78, principalEntry.RelationshipsSnapshot[keyProperty]);
Assert.Same(principalEntry, stateManager.TryGetEntry(new SimpleEntityKey<int>(entityType, -1)));
}
public void Detects_primary_key_change()
{
var model = BuildModel();
var configuration = TestHelpers.CreateContextConfiguration(model);
var stateManager = configuration.Services.StateManager;
var entityType = model.GetEntityType(typeof(Category));
var keyProperty = entityType.GetProperty("Id");
var category = new Category {
Id = -1
};
var principalEntry = stateManager.StartTracking(stateManager.GetOrCreateEntry(category));
principalEntry.RelationshipsSnapshot[keyProperty] = -1;
principalEntry.EntityState = EntityState.Added;
var notifierMock = new Mock <StateEntryNotifier>();
var changeDetector = new ChangeDetector(configuration, notifierMock.Object);
Assert.Same(principalEntry, stateManager.TryGetEntry(new SimpleEntityKey <int>(entityType, -1)));
category.Id = 1;
changeDetector.PropertyChanged(principalEntry, keyProperty);
notifierMock.Verify(m => m.PrincipalKeyPropertyChanged(principalEntry, keyProperty, -1, 1));
Assert.Equal(1, principalEntry.RelationshipsSnapshot[keyProperty]);
Assert.Same(principalEntry, stateManager.TryGetEntry(new SimpleEntityKey <int>(entityType, 1)));
}
public void Ignores_no_change_to_principal_key_in_sidecar()
{
var model = BuildModel();
var configuration = TestHelpers.CreateContextConfiguration(model);
var stateManager = configuration.Services.StateManager;
var entityType = model.GetEntityType(typeof(Category));
var keyProperty = entityType.GetProperty("PrincipalId");
var category = new Category {
Id = -1, PrincipalId = 77
};
var principalEntry = stateManager.StartTracking(stateManager.GetOrCreateEntry(category));
principalEntry.RelationshipsSnapshot[keyProperty] = 77;
principalEntry.EntityState = EntityState.Added;
var notifierMock = new Mock <StateEntryNotifier>();
var changeDetector = new ChangeDetector(configuration, notifierMock.Object);
Assert.Same(principalEntry, stateManager.TryGetEntry(new SimpleEntityKey <int>(entityType, -1)));
principalEntry.AddSidecar(new StoreGeneratedValuesFactory().Create(principalEntry))[keyProperty] = 77;
changeDetector.PropertyChanged(principalEntry, keyProperty);
notifierMock.Verify(m => m.PrincipalKeyPropertyChanged(
It.IsAny <StateEntry>(), It.IsAny <IProperty>(), It.IsAny <object>(), It.IsAny <object>()), Times.Never);
Assert.Equal(77, principalEntry.RelationshipsSnapshot[keyProperty]);
Assert.Same(principalEntry, stateManager.TryGetEntry(new SimpleEntityKey <int>(entityType, -1)));
}
public void Ignores_non_principal_key_change()
{
var model = BuildModel();
var configuration = TestHelpers.CreateContextConfiguration(model);
var stateManager = configuration.Services.StateManager;
var entityType = model.GetEntityType(typeof(Category));
var property = entityType.GetProperty("Name");
var category = new Category {
Id = -1, Name = "Blue"
};
var principalEntry = stateManager.StartTracking(stateManager.GetOrCreateEntry(category));
principalEntry.RelationshipsSnapshot[property] = "Blue";
principalEntry.EntityState = EntityState.Added;
var notifierMock = new Mock <StateEntryNotifier>();
var changeDetector = new ChangeDetector(configuration, notifierMock.Object);
Assert.Same(principalEntry, stateManager.TryGetEntry(new SimpleEntityKey <int>(entityType, -1)));
category.Name = "Red";
changeDetector.PropertyChanged(principalEntry, property);
notifierMock.Verify(m => m.PrincipalKeyPropertyChanged(
It.IsAny <StateEntry>(), It.IsAny <IProperty>(), It.IsAny <object>(), It.IsAny <object>()), Times.Never);
Assert.Equal("Blue", principalEntry.RelationshipsSnapshot[property]);
Assert.Same(principalEntry, stateManager.TryGetEntry(new SimpleEntityKey <int>(entityType, -1)));
}
public virtual StateEntry SnapshotAndSubscribe([NotNull] StateEntry entry)
{
var entityType = entry.EntityType;
if (!entityType.UseLazyOriginalValues)
{
entry.OriginalValues.TakeSnapshot();
entry.RelationshipsSnapshot.TakeSnapshot();
}
var changing = entry.Entity as INotifyPropertyChanging;
if (changing != null)
{
changing.PropertyChanging += (s, e) =>
{
var property = TryGetPropertyBase(entityType, e.PropertyName);
if (property != null)
{
_changeDetector.PropertyChanging(entry, property);
}
};
}
var changed = entry.Entity as INotifyPropertyChanged;
if (changed != null)
{
changed.PropertyChanged += (s, e) =>
{
var property = TryGetPropertyBase(entityType, e.PropertyName);
if (property != null)
{
_changeDetector.PropertyChanged(entry, property);
}
};
}
return(entry);
}
public void Ignores_no_change_to_principal_key_in_sidecar()
{
var model = BuildModel();
var configuration = TestHelpers.CreateContextConfiguration(model);
var stateManager = configuration.Services.StateManager;
var entityType = model.GetEntityType(typeof(Category));
var keyProperty = entityType.GetProperty("PrincipalId");
var category = new Category { Id = -1, PrincipalId = 77 };
var principalEntry = stateManager.StartTracking(stateManager.GetOrCreateEntry(category));
principalEntry.RelationshipsSnapshot[keyProperty] = 77;
principalEntry.EntityState = EntityState.Added;
var notifierMock = new Mock<StateEntryNotifier>();
var changeDetector = new ChangeDetector(configuration, notifierMock.Object);
Assert.Same(principalEntry, stateManager.TryGetEntry(new SimpleEntityKey<int>(entityType, -1)));
principalEntry.AddSidecar(new StoreGeneratedValuesFactory().Create(principalEntry))[keyProperty] = 77;
changeDetector.PropertyChanged(principalEntry, keyProperty);
notifierMock.Verify(m => m.PrincipalKeyPropertyChanged(
It.IsAny<StateEntry>(), It.IsAny<IProperty>(), It.IsAny<object>(), It.IsAny<object>()), Times.Never);
Assert.Equal(77, principalEntry.RelationshipsSnapshot[keyProperty]);
Assert.Same(principalEntry, stateManager.TryGetEntry(new SimpleEntityKey<int>(entityType, -1)));
}
public void Ignores_non_principal_key_change()
{
var model = BuildModel();
var configuration = TestHelpers.CreateContextConfiguration(model);
var stateManager = configuration.Services.StateManager;
var entityType = model.GetEntityType(typeof(Category));
var property = entityType.GetProperty("Name");
var category = new Category { Id = -1, Name = "Blue" };
var principalEntry = stateManager.StartTracking(stateManager.GetOrCreateEntry(category));
principalEntry.RelationshipsSnapshot[property] = "Blue";
principalEntry.EntityState = EntityState.Added;
var notifierMock = new Mock<StateEntryNotifier>();
var changeDetector = new ChangeDetector(configuration, notifierMock.Object);
Assert.Same(principalEntry, stateManager.TryGetEntry(new SimpleEntityKey<int>(entityType, -1)));
category.Name = "Red";
changeDetector.PropertyChanged(principalEntry, property);
notifierMock.Verify(m => m.PrincipalKeyPropertyChanged(
It.IsAny<StateEntry>(), It.IsAny<IProperty>(), It.IsAny<object>(), It.IsAny<object>()), Times.Never);
Assert.Equal("Blue", principalEntry.RelationshipsSnapshot[property]);
Assert.Same(principalEntry, stateManager.TryGetEntry(new SimpleEntityKey<int>(entityType, -1)));
}