public void WriteWithNullThrows()
{
var sut = new CompositeOutput(new StubOutput());
Assert.Throws <ArgumentNullException>(() =>
sut.Write(null));
}
public void WriteCallsInnerOutput()
{
var actual = string.Empty;
var output1 = new DeletagingOutput(l => actual += "1");
var output2 = new DeletagingOutput(l => actual += "2");
var sut = new CompositeOutput(output1, output2);
sut.Write("line");
Assert.Equal("12", actual);
}
