public void TestMathFunctions()
{
const double num = 0.6;
var model = new DoubleModel
{
Number = num,
Document = new MutableDocument("doc1")
};
Db.Save(model);
var expectedValues = new[] {
Math.Abs(num), Math.Acos(num), Math.Asin(num), Math.Atan(num),
Math.Ceiling(num), Math.Exp(num),
Math.Floor(num), Math.Log(num), Math.Log10(num),
Math.Round(num), Math.Sin(num), Math.Sqrt(num),
Math.Tan(num), Math.Truncate(num)
};
int index = 0;
var queryable = new DatabaseQueryable <DoubleModel>(Db);
var parameter = LinqExpression.Parameter(typeof(DoubleModel), "x");
foreach (var function in new[] {
"Abs", "Acos", "Asin", "Atan",
"Ceiling", "Exp",
"Floor", "Log", "Log10",
"Round", "Sin", "Sqrt",
"Tan", "Truncate"
})
{
var methodCall = LinqExpression.Lambda <Func <DoubleModel, double> >(LinqExpression.Call(typeof(Math).GetMethod(function, new[] { typeof(double) }), LinqExpression.Property(parameter, "Number")), parameter);
var q = queryable.Select(methodCall);
var numRows = VerifyQuery(q, (n, r) =>
{
r.Should().Be(expectedValues[index++]);
});
numRows.Should().Be(1);
}
}
