public void Instantiate_NCalcArgs_NcalcResolver()
{
var context = new Context(null);
var args = new NCalcScalarResolverArgs("a * b - 2", context);
var factory = new ScalarResolverFactory(null);
var resolver = factory.Instantiate(args);
Assert.That(resolver, Is.TypeOf <NCalcScalarResolver <object> >());
}
protected override ResultSet Execute(ResultSet rs, int ordinal)
{
foreach (DataRow row in rs.Rows)
{
Context.Switch(row);
var args = new NCalcScalarResolverArgs(Code, Context);
var resolver = new NCalcScalarResolver <object>(args);
row[ordinal] = resolver.Execute();
}
return(rs);
}
public void Instantiate_WithoutRowValues_CorrectComputation()
{
using (var dt = new DataTable())
{
var row = dt.NewRow();
var context = new Context(null);
var args = new NCalcScalarResolverArgs("1+1", context);
context.Switch(row);
var resolver = new NCalcScalarResolver <object>(args);
var output = resolver.Execute();
Assert.That(output, Is.EqualTo(2));
}
}
public void Instantiate_WithRowValuesBasedOnOrdinals_CorrectComputation()
{
using (var dt = new DataTable())
{
dt.Columns.Add("a", typeof(int));
dt.Columns.Add("b", typeof(int));
dt.Columns.Add("c", typeof(int));
var row = dt.NewRow();
row.ItemArray = new object[] { 2, 5, 3 };
var context = new Context(null);
var args = new NCalcScalarResolverArgs("[#0]*Max([#1], [#2])-2", context);
context.Switch(row);
var resolver = new NCalcScalarResolver <object>(args);
var output = resolver.Execute();
Assert.That(output, Is.EqualTo(2 * Math.Max(5, 3) - 2));
}
}
public void Instantiate_WithRowValuesBasedOnOrdinalsAndVariable_CorrectComputation()
{
using (var dt = new DataTable())
{
dt.Columns.Add("a", typeof(int));
dt.Columns.Add("b", typeof(int));
dt.Columns.Add("c", typeof(int));
var row = dt.NewRow();
row.ItemArray = new object[] { 2, 5, 3 };
var context = new Context(new Dictionary <string, ITestVariable> {
{ "myVar", new GlobalVariable(new LiteralScalarResolver <decimal>(10)) }
});
var args = new NCalcScalarResolverArgs("[#0]*Max([#1], [#2])-[@myVar]", context);
context.Switch(row);
var resolver = new NCalcScalarResolver <object>(args);
var output = resolver.Execute();
Assert.That(output, Is.EqualTo(2 * Math.Max(5, 3) - 10));
}
}