Correct implementation of Parser Test

Semantic comparison test

[Theory, AutoFixture]
public void ParseValidInputShouldReturnCorrectResult(
    PatientReportParser sut)
{
    const string argsString = @"-o=C:\Temp\someFile -p=1 -d";
    var args = new string[0];
    IResult actualResult = null;

    var expectedResult =
        new Likeness<CreateReportResult, CreateReportResult>(new CreateReportResult(@"C:\Temp\someFile", "1", "database"));

    "Given valid arguments"
       .Given(() => args = argsString.Split(' '));
    "When Parse is called"
        .When(() => actualResult = (CreateReportResult) sut.Parse(args));
    "Then the correct IResult should be returned"
        .Then(() => actualResult.Should().BeOfType<CreateReportResult>());
    "And the CreateReportResult should be correctly initialised"
        .And(() => Assert.True(expectedResult.Equals(actualResult), "The CreateReport object's properties should have been initialised correctly"));
}