private bool InternalTryMatch(Object actual, IMatcher childMatcher, ISelfDescribing selfDescribing)
{
//so we can print child diagnostics after
var childDiag = new MatchDiagnostics();
var matched = childMatcher.Matches(actual, childDiag);
Text(matched ? "Match":"Mismatch!");
var desc = Description.With();
if (selfDescribing != null)
{
desc.Value(selfDescribing);
}
if (!matched)
{
Expect.PrintExpectButGot(desc, actual, childMatcher);
desc.Value(childDiag);
}
else
{
desc.Value(childMatcher);
}
Child(desc);
return(matched);
}
/// <summary>
/// Performs a type check to ensure the object is of the expected type.
/// </summary>
/// <param name="actual"></param>
/// <param name="diagnostics"></param>
/// <returns></returns>
public bool Matches(object actual, IMatchDiagnostics diagnostics)
{
if (actual == null)
{
switch (m_isNullable)
{
case Nulls.Allowed:
return(Matches((T)actual, diagnostics));
case Nulls.NotAllowed:
diagnostics.MisMatched("Expected non null");
return(false);
case Nulls.NonNullableType:
diagnostics.MisMatched("Wrong type, expected type {0} which is non nullable, but got null instead", typeof(T).FullName);
return(false);
}
}
if (!isValidType(actual))
{
diagnostics.MisMatched(Description.With()
.Text("Wrong type, expected {0} but got {1}", typeof(T).FullName, actual.GetType().FullName)
.Value("actual", actual.GetType().FullName)
);
return(false);
}
T val;
try {
val = wrap(actual);
} catch (InvalidCastException e) {
throw new InvalidCastException(String.Format("Could not cast {0} to {1}", actual.GetType().FullName, typeof(T).FullName), e);
}
return(Matches(val, diagnostics));
}
public IMatchDiagnostics MisMatched(string text, params object[] args)
{
MisMatched(Description.With().Text(text, args));
return(this);
}
public bool TryMatch <T>(T actual, String actualName, IMatcher <T> childMatcher)
{
return(InternalTryMatch(actual, childMatcher, Description.With().Value("named", actualName)));
}
public bool TryMatch <T>(T actual, int index, IMatcher <T> childMatcher)
{
return(InternalTryMatch(actual, childMatcher, Description.With().Value("at position", index)));
}