public void FromNullSeedThrows()
{
// Fixture setup
var sut = new SutBuilder <object>().Create();
// Exercise system and verify outcome
Assert.Throws <ArgumentNullException>(() =>
sut.FromSeed(null));
// Teardown
}
public void FromSeedReturnsCorrectResult()
{
// Fixture setup
Func <OperatingSystem, OperatingSystem> expectedFactory = s => s;
var sut = new SutBuilder <OperatingSystem>().Create();
// Exercise system
var result = sut.FromSeed(expectedFactory);
// Verify outcome
var resultingComposer = Assert.IsAssignableFrom <Composer <OperatingSystem> >(result);
var factory = Assert.IsAssignableFrom <SeededFactory <OperatingSystem> >(resultingComposer.Factory);
Assert.Equal(expectedFactory, factory.Factory);
// Teardown
}