public virtual void Explicit_principal_key_is_not_replaced_with_new_primary_key()
{
var model = new Model();
var modelBuilder = CreateModelBuilder(model);
modelBuilder
.Entity<BigMak>().HasMany(e => e.Pickles).WithOne(e => e.BigMak)
.PrincipalKey(e => new { e.Id });
modelBuilder.Ignore<Bun>();
var principalType = model.GetEntityType(typeof(BigMak));
var dependentType = model.GetEntityType(typeof(Pickle));
var nonPrimaryPrincipalKey = principalType.GetKeys().Single();
var dependentKey = dependentType.GetKeys().SingleOrDefault();
var modelClone = model.Clone();
var expectedPrincipalProperties = modelClone.GetEntityType(typeof(BigMak)).GetProperties().ToList();
var expectedDependentProperties = modelClone.GetEntityType(typeof(Pickle)).GetProperties().ToList();
modelBuilder.Entity<BigMak>().HasKey(e => e.AlternateKey);
var principalProperty = principalType.GetProperty("AlternateKey");
var fk = dependentType.GetForeignKeys().Single();
Assert.Same(nonPrimaryPrincipalKey, fk.PrincipalKey);
Assert.Equal("BigMak", dependentType.Navigations.Single().Name);
Assert.Equal("Pickles", principalType.Navigations.Single().Name);
Assert.Same(fk, dependentType.Navigations.Single().ForeignKey);
Assert.Same(fk, principalType.Navigations.Single().ForeignKey);
AssertEqual(expectedPrincipalProperties.Select(p => p.Name), principalType.Properties.Select(p => p.Name));
AssertEqual(expectedDependentProperties, dependentType.Properties);
Assert.Empty(principalType.GetForeignKeys());
var primaryPrincipalKey = principalType.GetPrimaryKey();
Assert.Same(principalProperty, primaryPrincipalKey.Properties.Single());
Assert.Equal(2, principalType.GetKeys().Count());
Assert.True(principalType.GetKeys().Contains(nonPrimaryPrincipalKey));
var oldKeyProperty = principalType.GetProperty(nameof(BigMak.Id));
var newKeyProperty = principalType.GetProperty(nameof(BigMak.AlternateKey));
Assert.True(oldKeyProperty.RequiresValueGenerator);
Assert.Null(oldKeyProperty.ValueGenerated);
Assert.True(newKeyProperty.RequiresValueGenerator);
Assert.Equal(ValueGenerated.OnAdd, newKeyProperty.ValueGenerated);
Assert.Same(dependentKey, dependentType.GetKeys().SingleOrDefault());
Assert.Same(dependentKey, dependentType.FindPrimaryKey());
}