public void AddProperty_TypeHasAlreadyBeenBuilt_ThrowsInvalidOperationException()
{
PropertyBagBuilder builder = new PropertyBagBuilder("name");
builder.Build();
Assert.That(() => builder.AddProperty("name", typeof(string)),
Throws.TypeOf<InvalidOperationException>()
.And.Message.Contains("Unable to add properties once a type has already been built."));
}
public void CreatedType_ImplementsIPropertyBag()
{
PropertyBagBuilder builder = new PropertyBagBuilder("name");
Type type = builder.Build();
Assert.That(typeof(IPropertyBag).IsAssignableFrom(type), Is.True);
}
public void CreatedType_SetPropertyToIncompatibleType_ThrowsArgumentException()
{
PropertyBagBuilder builder = new PropertyBagBuilder("name");
builder.AddProperty("Property", typeof(string));
Type type = builder.Build();
PropertyInfo property = type.GetProperty("Property");
object instance = Activator.CreateInstance(type);
string message = "Object of type 'System.Object' cannot be converted to type 'System.String'.";
Assert.That(() => property.SetValue(instance, new object(), null),
Throws.TypeOf<ArgumentException>()
.And.Message.Contains(message));
}
public void CreatedType_ContainsExpectedProperties()
{
PropertyBagBuilder builder = new PropertyBagBuilder("name");
builder.AddProperty("Property1", typeof(string));
builder.AddProperty("Property2", typeof(int));
Type type = builder.Build();
Assert.That(type.GetProperty("Property1"), Is.Not.Null);
Assert.That(type.GetProperty("Property1").PropertyType, Is.EqualTo(typeof(string)));
Assert.That(type.GetProperty("Property2"), Is.Not.Null);
Assert.That(type.GetProperty("Property2").PropertyType, Is.EqualTo(typeof(int)));
}
public void CreatedType_CanGetAndSetPropertyAsExpected()
{
PropertyBagBuilder builder = new PropertyBagBuilder("name");
builder.AddProperty("Property", typeof(string));
Type type = builder.Build();
PropertyInfo property = type.GetProperty("Property");
object instance = Activator.CreateInstance(type);
property.SetValue(instance, "Value", null);
object value = property.GetValue(instance, null);
Assert.That(value, Is.EqualTo("Value"));
}
public void CreatedType_AsIPropertyBag_SetValue_SetsPropertyValue()
{
PropertyBagBuilder builder = new PropertyBagBuilder("name");
builder.AddProperty("Property", typeof(string));
Type type = builder.Build();
IPropertyBag bag = Activator.CreateInstance(type) as IPropertyBag;
bag.SetValue("Property", "expected_value");
PropertyInfo propertyInfo = type.GetProperty("Property");
Assert.That(propertyInfo.GetValue(bag, null), Is.EqualTo("expected_value"));
}
public void CreatedType_AsIPropertyBag_SetValue_PropertyNameIsNotValid_ThrowsArgumentException()
{
PropertyBagBuilder builder = new PropertyBagBuilder("name");
builder.AddProperty("Property", typeof(string));
Type type = builder.Build();
IPropertyBag bag = Activator.CreateInstance(type) as IPropertyBag;
string message = "propertyName must refer to a parameter that exists on this type.";
Assert.That(() => bag.SetValue("Name", new object()),
Throws.TypeOf<ArgumentException>()
.And.Message.Contains(message));
}
public void CreatedType_AsIPropertyBag_SetValue_ObjectIsOfInvalidType_ThrowsInvalidCastException()
{
PropertyBagBuilder builder = new PropertyBagBuilder("name");
builder.AddProperty("Property", typeof(string));
Type type = builder.Build();
IPropertyBag bag = Activator.CreateInstance(type) as IPropertyBag;
string message = "Unable to cast object of type 'System.Object' to type 'System.String'.";
Assert.That(() => bag.SetValue("Property", new object()),
Throws.TypeOf<InvalidCastException>()
.And.Message.Contains(message));
}