public void WriteLine(string outputText, string expected)
{
var output = new TestOutputHelper();
var messageBus = new SpyMessageBus();
var test = Substitute.For <_ITest>();
test.UniqueID.Returns("test-id");
test.TestCase.UniqueID.Returns("case-id");
test.TestCase.TestMethod !.UniqueID.Returns("method-id");
test.TestCase.TestClass !.UniqueID.Returns("class-id");
test.TestCase.TestCollection.UniqueID.Returns("coll-id");
test.TestCase.TestCollection.TestAssembly.UniqueID.Returns("asm-id");
output.Initialize(messageBus, test);
output.WriteLine(outputText);
var message = Assert.Single(messageBus.Messages);
var outputMessage = Assert.IsType <_TestOutput>(message);
Assert.Equal("asm-id", outputMessage.AssemblyUniqueID);
Assert.Equal(expected + Environment.NewLine, outputMessage.Output);
Assert.Equal("case-id", outputMessage.TestCaseUniqueID);
Assert.Equal("class-id", outputMessage.TestClassUniqueID);
Assert.Equal("coll-id", outputMessage.TestCollectionUniqueID);
Assert.Equal("method-id", outputMessage.TestMethodUniqueID);
Assert.Equal("test-id", outputMessage.TestUniqueID);
Assert.Equal(expected + Environment.NewLine, output.Output);
}