public void ModelChangesFlowToProperties()
{
// 测试 ViewModel 返回模型的当前值
Department dep = new Department { DepartmentName = "DepartmentName", DepartmentCode = "DepartmentCode" };
DepartmentViewModel vm = new DepartmentViewModel(dep);
vm.DepartmentName = "DepartmentName_NEW";
Assert.AreEqual("DepartmentName_NEW", dep.DepartmentName, "DepartmentName property is not fetching the value from the model.");
vm.DepartmentCode = "DepartmentCode_NEW";
Assert.AreEqual("DepartmentCode_NEW", dep.DepartmentCode, "DepartmentCode property is not fetching the value from the model.");
}
public void PropertyGetAndSet()
{
// 测试初始属性显示在 ViewModel 中
Department dep = new Department { DepartmentName = "DepartmentName", DepartmentCode = "DepartmentCode" };
DepartmentViewModel vm = new DepartmentViewModel(dep);
Assert.AreEqual(dep, vm.Model, "Bound object property did not return object from model.");
Assert.AreEqual("DepartmentName", vm.DepartmentName, "DepartmentName property did not return value from model.");
Assert.AreEqual("DepartmentCode", vm.DepartmentCode, "DepartmentCode property did not return value from model.");
// 更改属性的测试将更新模型并引发 PropertyChanged
string lastProperty;
vm.PropertyChanged += (sender, e) => { lastProperty = e.PropertyName; };
lastProperty = null;
vm.DepartmentName = "DepartmentName_NEW";
Assert.AreEqual("DepartmentName", lastProperty, "Setting DepartmentName property did not raise correct PropertyChanged event.");
Assert.AreEqual("DepartmentName_NEW", dep.DepartmentName, "Setting DepartmentName property did not update model.");
lastProperty = null;
vm.DepartmentCode = "DepartmentCode_NEW";
Assert.AreEqual("DepartmentCode", lastProperty, "Setting DepartmentName property did not raise correct PropertyChanged event.");
Assert.AreEqual("DepartmentCode_NEW", dep.DepartmentCode, "Setting DepartmentCode property did not update model.");
}
public void PropertyGetAndSet()
{
// Test initial properties are surfaced in ViewModel
Department dep = new Department { DepartmentName = "DepartmentName", DepartmentCode = "DepartmentCode" };
DepartmentViewModel vm = new DepartmentViewModel(dep);
Assert.AreEqual(dep, vm.Model, "Bound object property did not return object from model.");
Assert.AreEqual("DepartmentName", vm.DepartmentName, "DepartmentName property did not return value from model.");
Assert.AreEqual("DepartmentCode", vm.DepartmentCode, "DepartmentCode property did not return value from model.");
// Test changing properties updates Model and raises PropertyChanged
string lastProperty;
vm.PropertyChanged += (sender, e) => { lastProperty = e.PropertyName; };
lastProperty = null;
vm.DepartmentName = "DepartmentName_NEW";
Assert.AreEqual("DepartmentName", lastProperty, "Setting DepartmentName property did not raise correct PropertyChanged event.");
Assert.AreEqual("DepartmentName_NEW", dep.DepartmentName, "Setting DepartmentName property did not update model.");
lastProperty = null;
vm.DepartmentCode = "DepartmentCode_NEW";
Assert.AreEqual("DepartmentCode", lastProperty, "Setting DepartmentName property did not raise correct PropertyChanged event.");
Assert.AreEqual("DepartmentCode_NEW", dep.DepartmentCode, "Setting DepartmentCode property did not update model.");
}
public void ReferencesGetAndSet()
{
// Scalar properties are inherited from BasicEmployeeViewModel and are already tested
Department d1 = new Department();
Department d2 = new Department();
Employee e1 = new Employee();
Employee e2 = new Employee();
Employee employee = new Employee { Department = d1, Manager = e1 };
employee.ContactDetails.Add(new Phone());
employee.ContactDetails.Add(new Email());
using (FakeEmployeeContext ctx = new FakeEmployeeContext(new Employee[] { e1, e2, employee }, new Department[] { d1, d2 }))
{
UnitOfWork unit = new UnitOfWork(ctx);
DepartmentViewModel dvm1 = new DepartmentViewModel(d1);
DepartmentViewModel dvm2 = new DepartmentViewModel(d2);
ObservableCollection<DepartmentViewModel> departments = new ObservableCollection<DepartmentViewModel> { dvm1, dvm2 };
ObservableCollection<EmployeeViewModel> employees = new ObservableCollection<EmployeeViewModel>();
EmployeeViewModel evm1 = new EmployeeViewModel(e1, employees, departments, unit);
EmployeeViewModel evm2 = new EmployeeViewModel(e2, employees, departments, unit);
EmployeeViewModel employeeViewModel = new EmployeeViewModel(employee, employees, departments, unit);
employees.Add(evm1);
employees.Add(evm2);
employees.Add(employeeViewModel);
// Test initial references are surfaced in ViewModel
Assert.AreEqual(evm1, employeeViewModel.Manager, "ViewModel did not return ViewModel representing current manager.");
Assert.AreEqual(e1, employeeViewModel.Manager.Model, "ViewModel did not return ViewModel representing current manager.");
Assert.AreEqual(dvm1, employeeViewModel.Department, "ViewModel did not return ViewModel representing current department.");
Assert.AreEqual(d1, employeeViewModel.Department.Model, "ViewModel did not return ViewModel representing current department.");
Assert.AreEqual(2, employeeViewModel.ContactDetails.Count, "Contact details have not been populated on ViewModel.");
// Test changing properties updates Model and raises PropertyChanged
string lastProperty;
employeeViewModel.PropertyChanged += (sender, e) => { lastProperty = e.PropertyName; };
lastProperty = null;
employeeViewModel.Department = dvm2;
Assert.AreEqual("Department", lastProperty, "Setting Department property did not raise correct PropertyChanged event.");
Assert.AreEqual(d2, employee.Department, "Setting Department property in ViewModel is not reflected in Model.");
lastProperty = null;
employeeViewModel.Manager = evm2;
Assert.AreEqual("Manager", lastProperty, "Setting Manager property did not raise correct PropertyChanged event.");
Assert.AreEqual(e2, employee.Manager, "Setting Manager property in ViewModel is not reflected in Model.");
// Test ViewModel returns current value from model
employee.Manager = e1;
Assert.AreEqual(evm1, employeeViewModel.Manager, "ViewModel did not return correct manager when model was updated outside of ViewModel.");
employee.Department = d1;
Assert.AreEqual(dvm1, employeeViewModel.Department, "ViewModel did not return correct department when model was updated outside of ViewModel.");
// Test ViewModel returns current value from model when set to null
employee.Manager = null;
Assert.AreEqual(null, employeeViewModel.Manager, "ViewModel did not return correct manager when model was updated outside of ViewModel.");
employee.Department = null;
Assert.AreEqual(null, employeeViewModel.Department, "ViewModel did not return correct department when model was updated outside of ViewModel.");
}
}
public void ExternalAddToDepartmentLookup()
{
using (FakeEmployeeContext ctx = BuildContextWithData())
{
EmployeeViewModel vm = BuildViewModel(ctx);
DepartmentViewModel currentDepartment = vm.Department;
DepartmentViewModel newDepartment = new DepartmentViewModel(new Department());
vm.DepartmentLookup.Add(newDepartment);
Assert.IsTrue(vm.DepartmentLookup.Contains(newDepartment), "New department should have been added to DepartmentLookup.");
Assert.AreSame(currentDepartment, vm.Department, "Assigned Department should not have changed.");
Assert.IsFalse(ctx.IsObjectTracked(newDepartment.Model), "ViewModel is not responsible for adding departments created externally.");
}
}
/// <summary>
/// Handles addition a new department to the workspace and model
/// </summary>
private void AddDepartment()
{
Department dep = this.unitOfWork.CreateObject<Department>();
this.unitOfWork.AddDepartment(dep);
DepartmentViewModel vm = new DepartmentViewModel(dep);
this.AllDepartments.Add(vm);
this.CurrentDepartment = vm;
}
/// <summary>
/// 处理删除当前部门的操作
/// </summary>
private void DeleteCurrentDepartment()
{
this.unitOfWork.RemoveDepartment(this.CurrentDepartment.Model);
this.AllDepartments.Remove(this.CurrentDepartment);
this.CurrentDepartment = null;
}
public void ReferencesGetAndSet()
{
// Scalar 属性继承自 BasicEmployeeViewModel 并且已经测试
Department d1 = new Department();
Department d2 = new Department();
Employee e1 = new Employee();
Employee e2 = new Employee();
Employee employee = new Employee { Department = d1, Manager = e1 };
employee.ContactDetails.Add(new Phone());
employee.ContactDetails.Add(new Email());
using (FakeEmployeeContext ctx = new FakeEmployeeContext(new Employee[] { e1, e2, employee }, new Department[] { d1, d2 }))
{
UnitOfWork unit = new UnitOfWork(ctx);
DepartmentViewModel dvm1 = new DepartmentViewModel(d1);
DepartmentViewModel dvm2 = new DepartmentViewModel(d2);
ObservableCollection<DepartmentViewModel> departments = new ObservableCollection<DepartmentViewModel> { dvm1, dvm2 };
ObservableCollection<EmployeeViewModel> employees = new ObservableCollection<EmployeeViewModel>();
EmployeeViewModel evm1 = new EmployeeViewModel(e1, employees, departments, unit);
EmployeeViewModel evm2 = new EmployeeViewModel(e2, employees, departments, unit);
EmployeeViewModel employeeViewModel = new EmployeeViewModel(employee, employees, departments, unit);
employees.Add(evm1);
employees.Add(evm2);
employees.Add(employeeViewModel);
// 测试初始引用显示在 ViewModel 中
Assert.AreEqual(evm1, employeeViewModel.Manager, "ViewModel did not return ViewModel representing current manager.");
Assert.AreEqual(e1, employeeViewModel.Manager.Model, "ViewModel did not return ViewModel representing current manager.");
Assert.AreEqual(dvm1, employeeViewModel.Department, "ViewModel did not return ViewModel representing current department.");
Assert.AreEqual(d1, employeeViewModel.Department.Model, "ViewModel did not return ViewModel representing current department.");
Assert.AreEqual(2, employeeViewModel.ContactDetails.Count, "Contact details have not been populated on ViewModel.");
// 更改属性的测试将更新模型并引发 PropertyChanged
string lastProperty;
employeeViewModel.PropertyChanged += (sender, e) => { lastProperty = e.PropertyName; };
lastProperty = null;
employeeViewModel.Department = dvm2;
Assert.AreEqual("Department", lastProperty, "Setting Department property did not raise correct PropertyChanged event.");
Assert.AreEqual(d2, employee.Department, "Setting Department property in ViewModel is not reflected in Model.");
lastProperty = null;
employeeViewModel.Manager = evm2;
Assert.AreEqual("Manager", lastProperty, "Setting Manager property did not raise correct PropertyChanged event.");
Assert.AreEqual(e2, employee.Manager, "Setting Manager property in ViewModel is not reflected in Model.");
// 测试 ViewModel 返回模型的当前值
employee.Manager = e1;
Assert.AreEqual(evm1, employeeViewModel.Manager, "ViewModel did not return correct manager when model was updated outside of ViewModel.");
employee.Department = d1;
Assert.AreEqual(dvm1, employeeViewModel.Department, "ViewModel did not return correct department when model was updated outside of ViewModel.");
// 当设置为 null 时，测试 ViewModel 返回模型的当前值
employee.Manager = null;
Assert.AreEqual(null, employeeViewModel.Manager, "ViewModel did not return correct manager when model was updated outside of ViewModel.");
employee.Department = null;
Assert.AreEqual(null, employeeViewModel.Department, "ViewModel did not return correct department when model was updated outside of ViewModel.");
}
}
/// <summary>
/// 生成一个包含设为种子的数据的虚设上下文
/// </summary>
/// <returns>已填充的上下文</returns>
private static FakeEmployeeContext BuildContextWithData()
{
Department d1 = new Department();
Department d2 = new Department();
DepartmentViewModel dvm1 = new DepartmentViewModel(d1);
DepartmentViewModel dvm2 = new DepartmentViewModel(d2);
return new FakeEmployeeContext(new Employee[] { }, new Department[] { d1, d2 });
}