public Builder <T1> Assert(Expression <Action <T1> > assertionExpression)
{
if (assertionExpression == null)
{
throw new ArgumentNullException(nameof(assertionExpression));
}
var visitor = new ReplaceParameterWithExpressionVisitor(assertionExpression.Parameters, m_valueExpression.Body);
var coalescedAssertion = Expression.Lambda <Action>(visitor.Visit(assertionExpression.Body));
var assertFunc = coalescedAssertion.Compile();
try
{
assertFunc();
}
catch (Exception exception)
{
NUnit.Framework.Assert.Fail(GetDiagnosticMessage(coalescedAssertion.Body, exception));
}
return(this);
}
private Expression <Func <T2> > CoalesceWith <T2>(Expression <Func <T1, T2> > mapExpression)
{
var visitor = new ReplaceParameterWithExpressionVisitor(mapExpression.Parameters, m_valueExpression.Body);
return(Expression.Lambda <Func <T2> >(visitor.Visit(mapExpression.Body)));
}