public void should_propagate_unit_tag([Values(null, "tag")] string tag)
{
var expected = new MemoryStream();
// --arrange
var buildSession = A.Fake <IBuildSession>();
A.CallTo(() => buildSession.BuildChain).Returns(Unit.IsType <IDisposable>().Tag(tag).ToBuildChain());
var buildUnitCall = A.CallTo(() => buildSession.BuildUnit(Unit.IsType <MemoryStream>().Tag(tag)));
buildUnitCall.Returns(expected.ToBuildResult());
var target = new RedirectType(typeof(MemoryStream), SpecialTag.Propagate);
// --act
target.Process(buildSession);
// --assert
buildSession.BuildResult.Value.Should().Be(expected);
buildUnitCall.MustHaveHappenedOnceAndOnly();
}
