C# Model.GetOrAddProperty方法代码示例

        public void Can_read_nulls()
        {
            var entityType = new Model().AddEntityType(typeof(SomeEntity));
            entityType.GetOrAddProperty("Id", typeof(int));
            entityType.GetOrAddProperty("Foo", typeof(string));
            entityType.GetOrAddProperty("Goo", typeof(Guid?));

            var factory = GetMaterializer(new EntityMaterializerSource(new MemberMapper(new FieldMatcher())), entityType);

            var entity = (SomeEntity)factory(new ValueBuffer(new object[] { null, null, 77 }));

            Assert.Equal(77, entity.Id);
            Assert.Null(entity.Foo);
            Assert.Null(entity.Goo);
        }

        public void Constructor_throws_when_principal_and_depedent_property_count_do_not_match()
        {
            var dependentType = new Model().AddEntityType("D");
            var principalType = new Model().AddEntityType("P");

            var dependentProperty1 = dependentType.GetOrAddProperty("P1", typeof(int), shadowProperty: true);
            var dependentProperty2 = dependentType.GetOrAddProperty("P2", typeof(int), shadowProperty: true);

            principalType.GetOrSetPrimaryKey(principalType.GetOrAddProperty("Id", typeof(int), shadowProperty: true));

            Assert.Equal(
                Strings.ForeignKeyCountMismatch("{'P1', 'P2'}", "D", "{'Id'}", "P"),
                Assert.Throws<InvalidOperationException>(
                    () => new ForeignKey(new[] { dependentProperty1, dependentProperty2 }, principalType.GetPrimaryKey(), principalType)).Message);
        }

        public void Delegate_getter_is_returned_for_IProperty_property()
        {
            var entityType = new Model().AddEntityType(typeof(Customer));
            var idProperty = entityType.GetOrAddProperty("Id", typeof(int));

            Assert.Equal(7, new ClrPropertyGetterSource().GetAccessor(idProperty).GetClrValue(new Customer { Id = 7 }));
        }

        public void M_underscore_matching_field_is_not_used_if_type_is_not_compatible()
        {
            var entityType = new Model().AddEntityType(typeof(TheDarkSideOfTheMoon));
            var property = entityType.GetOrAddProperty("SpeakToMe", typeof(int));
            var propertyInfo = entityType.ClrType.GetAnyProperty("SpeakToMe");
            var fields = propertyInfo.DeclaringType.GetRuntimeFields().ToDictionary(f => f.Name);

            Assert.Null(new FieldMatcher().TryMatchFieldName(property, propertyInfo, fields));
        }

        public void Can_create_foreign_key()
        {
            var entityType = new Model().AddEntityType("E");
            var dependentProp = entityType.GetOrAddProperty("P", typeof(int), shadowProperty: true);
            var principalProp = entityType.GetOrAddProperty("Id", typeof(int), shadowProperty: true);
            entityType.GetOrSetPrimaryKey(principalProp);

            var foreignKey
                = new ForeignKey(new[] { dependentProp }, entityType.GetPrimaryKey(), entityType)
                {
                    IsUnique = true
                };

            Assert.Same(entityType, foreignKey.PrincipalEntityType);
            Assert.Same(principalProp, foreignKey.PrincipalKey.Properties.Single());
            Assert.Same(dependentProp, foreignKey.Properties.Single());
            Assert.True(foreignKey.IsUnique.Value);
            Assert.Same(entityType.GetPrimaryKey(), foreignKey.PrincipalKey);
        }

        public void Throws_if_no_match_found_and_no_property_setter()
        {
            var entityType = new Model().AddEntityType(typeof(TheDarkSide));
            entityType.GetOrAddProperty("Time", typeof(int));

            Assert.Equal(
                Strings.NoFieldOrSetter(typeof(TheDarkSide).FullName, "Time"),
                Assert.Throws<InvalidOperationException>(
                    () => new MemberMapper(new FieldMatcher()).MapPropertiesToMembers(entityType)).Message);
        }

        public void Delegate_setter_can_set_reference_type_property()
        {
            var entityType = new Model().AddEntityType(typeof(Customer));
            var idProperty = entityType.GetOrAddProperty("Content", typeof(string));

            var customer = new Customer { Id = 7 };

            new ClrPropertySetterSource().GetAccessor(idProperty).SetClrValue(customer, "MyString");

            Assert.Equal("MyString", customer.Content);
        }

        public void Annotated_field_name_is_used_if_present()
        {
            var entityType = new Model().AddEntityType(typeof(TheDarkSide));
            var property = entityType.GetOrAddProperty("SpeakToMe", typeof(int));
            property["BackingField"] = "fieldForSpeak";

            var mapping = new MemberMapper(new FieldMatcher()).MapPropertiesToMembers(entityType).Single();

            Assert.Same(property, mapping.Item1);
            Assert.Equal("fieldForSpeak", mapping.Item2.Name);
        }

        public void Can_create_materializer_for_entity_with_fields()
        {
            var entityType = new Model().AddEntityType(typeof(SomeEntityWithFields));
            entityType.GetOrAddProperty("Enum", typeof(SomeEnum));
            entityType.GetOrAddProperty("Foo", typeof(string));
            entityType.GetOrAddProperty("Goo", typeof(Guid?));
            entityType.GetOrAddProperty("Id", typeof(int));
            entityType.GetOrAddProperty("MaybeEnum", typeof(SomeEnum?));

            var factory = GetMaterializer(new EntityMaterializerSource(new MemberMapper(new FieldMatcher())), entityType);

            var gu = Guid.NewGuid();
            var entity = (SomeEntityWithFields)factory(new ValueBuffer(new object[] { SomeEnum.EnumValue, "Fu", gu, 77, null }));

            Assert.Equal(77, entity.Id);
            Assert.Equal("Fu", entity.Foo);
            Assert.Equal(gu, entity.Goo);
            Assert.Equal(SomeEnum.EnumValue, entity.Enum);
            Assert.Null(entity.MaybeEnum);
        }

        public void Throws_if_annotated_field_name_is_not_found()
        {
            var entityType = new Model().AddEntityType(typeof(TheDarkSide));
            var property = entityType.GetOrAddProperty("SpeakToMe", typeof(int));
            property["BackingField"] = "_speakToMe";

            Assert.Equal(
                Strings.MissingBackingField(typeof(TheDarkSide).FullName, "SpeakToMe", "_speakToMe"),
                Assert.Throws<InvalidOperationException>(
                    () => new MemberMapper(new FieldMatcher()).MapPropertiesToMembers(entityType)).Message);
        }

        public void Property_setter_is_used_if_no_matching_field_is_found()
        {
            var entityType = new Model().AddEntityType(typeof(TheDarkSide));
            var property = entityType.GetOrAddProperty("OnTheRun", typeof(int));

            var mapping = new MemberMapper(new FieldMatcher()).MapPropertiesToMembers(entityType).Single();

            Assert.Same(property, mapping.Item1);
            Assert.IsAssignableFrom<PropertyInfo>(mapping.Item2);
            Assert.Equal("OnTheRun", mapping.Item2.Name);
        }

        public void Throws_if_annotated_field_if_types_not_compatible()
        {
            var entityType = new Model().AddEntityType(typeof(TheDarkSide));
            var property = entityType.GetOrAddProperty("SpeakToMe", typeof(int));
            property["BackingField"] = "_badFieldForSpeak";

            Assert.Equal(
                Strings.BadBackingFieldType("_badFieldForSpeak", typeof(string).Name, typeof(TheDarkSide).FullName, "SpeakToMe", typeof(int).Name),
                Assert.Throws<InvalidOperationException>(
                    () => new MemberMapper(new FieldMatcher()).MapPropertiesToMembers(entityType)).Message);
        }

        public void Field_name_match_is_used_in_preference_to_property_setter()
        {
            var entityType = new Model().AddEntityType(typeof(TheDarkSide));
            var property = entityType.GetOrAddProperty("Breathe", typeof(int));

            var mapping = new MemberMapper(new FieldMatcher()).MapPropertiesToMembers(entityType).Single();

            Assert.Same(property, mapping.Item1);
            Assert.IsAssignableFrom<FieldInfo>(mapping.Item2);
            Assert.Equal("_breathe", mapping.Item2.Name);
        }

        private static void FieldMatchTest(string propertyName, string fieldName)
        {
            var entityType = new Model().AddEntityType(typeof(TheDarkSideOfTheMoon));
            var property = entityType.GetOrAddProperty(propertyName, typeof(int));
            var propertyInfo = entityType.ClrType.GetAnyProperty(propertyName);
            var fields = propertyInfo.DeclaringType.GetRuntimeFields().ToDictionary(f => f.Name);

            var matchedField = new FieldMatcher().TryMatchFieldName(property, propertyInfo, fields);

            Assert.Equal(fieldName, matchedField.Name);
        }

        public void Delegate_setter_can_set_value_type_property()
        {
            var entityType = new Model().AddEntityType(typeof(Customer));
            var idProperty = entityType.GetOrAddProperty("Id", typeof(int));

            var customer = new Customer { Id = 7 };

            new ClrPropertySetterSource().GetAccessor(idProperty).SetClrValue(customer, 1);

            Assert.Equal(1, customer.Id);
        }