fix: 修复 领域对象跟踪获取值为空的问题

Author: jianxuanbing

framework/src/Bing.Ddd.Domain/Bing/Domain/ChangeTracking/ChangeTrackingContext.cs

@@ -75,13 +75,14 @@ public void Add<TObject>(IChangeTrackable<TObject> leftObj, TObject rightObj) wh
         /// <typeparam name="TProperty">属性类型</typeparam>
         /// <typeparam name="TValue">值类型</typeparam>
         /// <param name="expression">属性表达式。范例：t => t.Name</param>
+        /// <param name="obj">领域对象</param>
         /// <param name="newValue">新值。范例：newEntity.Name</param>
-        public void Add<TObject, TProperty, TValue>(Expression<Func<TObject, TProperty>> expression, TValue newValue) where TObject : IDomainObject
+        public void Add<TObject, TProperty, TValue>(Expression<Func<TObject, TProperty>> expression, TObject obj, TValue newValue) where TObject : IDomainObject
         {
             var member = Lambdas.GetMemberExpression(expression);
             var name = Lambdas.GetMemberName(member);
             var desc = Reflection.Reflections.GetDisplayNameOrDescription(member.Member);
-            var value = Lambdas.GetValue(expression);
+            var value = member.Member.GetPropertyValue(obj);
             Add(name, desc, Conv.To<TValue>(value), newValue);
         }
 

framework/src/Bing.Ddd.Domain/Bing/Domain/Entities/DomainObjectBase.cs

@@ -91,7 +91,7 @@ protected virtual void AddChanges(TObject newObj) { }
         /// <typeparam name="TValue">值类型</typeparam>
         /// <param name="expression">属性表达式。范例：t => t.Name</param>
         /// <param name="newValue">新值。范例：newEntity.Name</param>
-        protected void AddChange<TProperty, TValue>(Expression<Func<TObject, TProperty>> expression, TValue newValue) => _changeTrackingContext.Add(expression, newValue);
+        protected void AddChange<TProperty, TValue>(Expression<Func<TObject, TProperty>> expression, TValue newValue) => _changeTrackingContext.Add(expression, AssignableType(this), newValue);
 
         /// <summary>
         /// 添加变更

framework/tests/Bing.Tests/Applications/CrudServiceTest.Save.cs

@@ -126,7 +126,7 @@ public async Task Test_SaveAsync_Add()
         [Fact]
         public async Task Test_SaveAsync_Update()
         {
-            _repository.FindAsync(_id).Returns(t => new EntitySample(_id));
+            _repository.FindAsync(_id).Returns(t => new EntitySample(_id) { Name = "a" });
             await _service.SaveAsync(new DtoSample { Id = _id.ToString(), Name = "b" });
             await _repository.DidNotReceive().AddAsync(Arg.Any<EntitySample>());
             await _repository.Received().UpdateAsync(Arg.Is<EntitySample>(t => t.Name == "b"));

tests/Bing.Tests.Samples/Bing/Tests/Samples/RepositorySample.cs

@@ -42,6 +42,15 @@ public EntitySample(Guid id) : base(id) { }
         /// </summary>
         [IgnoreMap]
         public string IgnoreValue { get; set; }
+
+        /// <summary>
+        /// 添加变更列表
+        /// </summary>
+        protected override void AddChanges(EntitySample other)
+        {
+            AddChange(x => x.Id, other.Id);
+            AddChange(x => x.Name, other.Name);
+        }
     }
 
     /// <summary>