/// <summary>Assert.IsTrue(predicate(value))</summary>
public static void Is <T>(this T value, Expression <Func <T, bool> > predicate, string message = "")
{
var condition = predicate.Compile().Invoke(value);
var paramName = predicate.Parameters.First().Name;
string msg = "";
try
{
var dumper = new ExpressionDumper <T>(value, predicate.Parameters.Single());
dumper.Visit(predicate);
var dump = string.Join(", ", dumper.Members.Select(kvp => kvp.Key + " = " + kvp.Value));
msg = string.Format("\r\n{0} = {1}\r\n{2}\r\n{3}{4}",
paramName, value, dump, predicate,
string.IsNullOrEmpty(message) ? "" : ", " + message);
}
catch
{
msg = string.Format("{0} = {1}, {2}{3}",
paramName, value, predicate,
string.IsNullOrEmpty(message) ? "" : ", " + message);
}
Assert.IsTrue(condition, msg);
}
