public async Task BindModel_ReturnsNothing_IfNoBinderTypeIsSet()
{
// Arrange
var bindingContext = GetBindingContext(typeof(Person));
var binder = new BinderTypeBasedModelBinder();
// Act
var binderResult = await binder.BindModelResultAsync(bindingContext);
// Assert
Assert.Equal(default(ModelBindingResult), binderResult);
}
public async Task BindModel_ReturnsFailedResult_EvenIfSelectedBinderReturnsNull()
{
// Arrange
var bindingContext = GetBindingContext(typeof(Person), binderType: typeof(NullModelBinder));
var binder = new BinderTypeBasedModelBinder();
// Act
var binderResult = await binder.BindModelResultAsync(bindingContext);
// Assert
Assert.NotEqual(default(ModelBindingResult), binderResult);
Assert.False(binderResult.IsModelSet);
}
public async Task BindModel_ForNonModelBinder_Throws()
{
// Arrange
var bindingContext = GetBindingContext(typeof(Person), binderType: typeof(Person));
var binder = new BinderTypeBasedModelBinder();
var expected = $"The type '{typeof(Person).FullName}' must implement " +
$"'{typeof(IModelBinder).FullName}' to be used as a model binder.";
// Act
var ex = await Assert.ThrowsAsync <InvalidOperationException>(
() => binder.BindModelResultAsync(bindingContext));
// Assert
Assert.Equal(expected, ex.Message);
}
public async Task BindModel_CallsBindAsync_OnProvidedModelBinder()
{
// Arrange
var bindingContext = GetBindingContext(typeof(Person), binderType: typeof(NotNullModelBinder));
var model = new Person();
var serviceProvider = new ServiceCollection()
.AddSingleton <IModelBinder, NullModelBinder>()
.BuildServiceProvider();
bindingContext.OperationBindingContext.HttpContext.RequestServices = serviceProvider;
var binder = new BinderTypeBasedModelBinder();
// Act
var binderResult = await binder.BindModelResultAsync(bindingContext);
// Assert
var p = (Person)binderResult.Model;
Assert.Equal(model.Age, p.Age);
Assert.Equal(model.Name, p.Name);
}