public void VisitExtensionExpression()
{
var expression = new ReducibleExtensionExpression(Expression.Constant(0));
var result = FormattingExpressionVisitor.Format(expression);
Assert.That(result, Is.EqualTo("Reducible(0)"));
}
public void VisitUnknownNonExtensionExpression()
{
var expression = new UnknownExpression(typeof(object));
var result = FormattingExpressionVisitor.Format(expression);
Assert.That(result, Is.EqualTo("[-1]"));
}
public void OrdinaryExpression()
{
var expression = Expression.MakeBinary(ExpressionType.GreaterThan, Expression.Constant(1), Expression.Constant(2));
var formattedExpression = FormattingExpressionVisitor.Format(expression);
Assert.That(formattedExpression, Is.EqualTo("(1 > 2)"));
}
/// <summary>
/// Builds a string from the <paramref name="expression"/> tree, including .NET 3.5.
/// </summary>
public static string BuildString(this Expression expression)
{
#if !NET_3_5
return(expression.ToString());
#else
return(FormattingExpressionVisitor.Format(expression));
#endif
}
public void QuerySourceReferenceExpression()
{
var referencedClause = ExpressionHelper.CreateMainFromClause_Int("i", typeof(int), ExpressionHelper.CreateQueryable <Cook>());
var expression = Expression.MakeBinary(ExpressionType.GreaterThan, new QuerySourceReferenceExpression(referencedClause), Expression.Constant(2));
var formattedExpression = FormattingExpressionVisitor.Format(expression);
Assert.That(formattedExpression, Is.EqualTo("([i] > 2)"));
}
public void SubQueryExpression()
{
var queryExpression = ExpressionHelper.MakeExpression(() => (from s in ExpressionHelper.CreateQueryable <Cook> () select s).Count());
var subQueryModel = ExpressionHelper.ParseQuery(queryExpression);
var expression = Expression.MakeBinary(ExpressionType.GreaterThan, new SubQueryExpression(subQueryModel), Expression.Constant(2));
var formattedExpression = FormattingExpressionVisitor.Format(expression);
Assert.That(formattedExpression, Is.EqualTo("({TestQueryable<Cook>() => Count()} > 2)"));
}
public void ToString_Nested()
{
var expression = Expression.Not(_expression);
#if !NET_3_5
var result = expression.ToString();
Assert.That(result, Is.EqualTo("Not(VBCompareString((\"string1\" == \"string2\"), True))"));
#else
var result = FormattingExpressionVisitor.Format(expression);
Assert.That(result, Is.EqualTo("Not(VBCompareString((\"string1\" = \"string2\"), True))"));
#endif
}