public void ItParsesSeveralStringAdditionsIntoASingleConcat(Expression <Func <Person, Car, object> > testcase)
{
var tableRefs = new[]
{
(ITableReference)Types.TableReferenceFromType <Person>(),
(ITableReference)Types.TableReferenceFromType <Car>(),
};
var ev = ExpressionVisitor.Visit(
ExpressionVisitor.VisitableExpression.NewLinqExpression(testcase),
tableRefs.ToContext());
var expected =
S.BinExp(
S.Func(AST.FunctionType.Concat, new[] { S.Col <Person>("Name"), S.Col <Car>("Brand"), S.Col <Person>("Name"), S.Col <Car>("Brand"), }),
BinaryOperation.Equal,
S.Const("'KalleSaab'")).ToOption();
Assert.That(ev, Is.EqualTo(expected));
}
public void ItCanParseToLower()
{
Expression <Func <Person, object> > func = (Person p) => p.Name.ToLower() == "kalle";
var tableRefs = new[]
{
Types.TableReferenceFromType <Person>(),
};
var ev = ExpressionVisitor.Visit(
ExpressionVisitor.VisitableExpression.NewLinqExpression(func),
tableRefs.ToContext());
var expected =
S.BinExp(
S.Func(AST.FunctionType.Lower, new[] { S.Col <Person>("Name") }),
BinaryOperation.Equal,
S.Const("'kalle'")).ToOption();
Assert.That(ev, Is.EqualTo(expected));
}
public void ItParsesStringAdditionAsConcat()
{
Expression <Func <Person, Car, object> > func = (Person p, Car c) => (p.Name + c.Brand) == "KalleSaab";
var tableRefs = new []
{
(ITableReference)Types.TableReferenceFromType <Person>(),
(ITableReference)Types.TableReferenceFromType <Car>(),
};
var ev = ExpressionVisitor.Visit(
ExpressionVisitor.VisitableExpression.NewLinqExpression(func),
tableRefs.ToContext());
var expected =
S.BinExp(
S.Func(AST.FunctionType.Concat, new[] { S.Col <Person>("Name"), S.Col <Car>("Brand"), }),
BinaryOperation.Equal,
S.Const("'KalleSaab'")).ToOption();
Assert.That(ev, Is.EqualTo(expected));
}