public void Should_throw_when_null()
{
// Arrange
var context = new ScannerContext();
// Act & Assert
Assert.Throws <ArgumentNullException>(() => context.AddFilter(null));
}
public void Should_add_filter()
{
// Arrange
var context = new ScannerContext();
Func <Type, bool> filter = t => true;
// Act
context.AddFilter(filter);
// Assert
Assert.That(context.Filters.Single(), Is.EqualTo(filter));
}