public void ItShouldPossibleToInvokeStringFormat()
{
const string expected =
@"public System.String Call(System.String par1, System.String par2)
{
System.String result;
result = System.String.Format(""{0}-{1}"", par1, par2);
return result;
}";
var newExpression = Function.Create()
.WithParameter <string>("par1")
.WithParameter <string>("par2")
.WithBody(
CodeLine.CreateVariable <string>("result"),
CodeLine.Assign(Operation.Variable("result"),
StringOperation.Format(
"{0}-{1}",
Operation.Variable("par1"),
Operation.Variable("par2")))
)
.Returns("result");
AssertString.AreEqual(expected, newExpression.ToString());
var lambda = newExpression.ToLambda <Func <string, string, string> >();
Assert.IsNotNull(lambda);
var result = lambda("a", "b");
Assert.AreEqual("a-b", result);
}