public void Case02()
{
var random = new Random();
foreach (var _ in Enumerable.Range(0, 10))
{
int a = random.Next(-100, 100);
int b = random.Next(-100, 100);
TestContext.WriteLine($"a={a}, b={b}");
Expression <Func <int, int, int> > expr1 = (x, y) => x - y;
Expression <Func <int, int> > expr2 = x => x / 2;
var expr3 = ExpressionOperators.Then <int, int, int>(expr1, expr2);
Assert.AreEqual((a - b) / 2, expr3.Compile().Invoke(a, b));
}
}
public void Case01()
{
var random = new Random();
foreach (var _ in Enumerable.Range(0, 10))
{
int a = random.Next(-100, 100);
TestContext.WriteLine($"a={a}");
Expression <Func <int, int> > expr1 = x => x - 1;
Expression <Func <int, int> > expr2 = x => x / 2;
var expr3 = ExpressionOperators.Then <int, int>(expr1, expr2);
var expr4 = ExpressionOperators.Then <int, int>(expr2, expr1);
Assert.AreEqual((a - 1) / 2, expr3.Compile().Invoke(a));
Assert.AreEqual(a / 2 - 1, expr4.Compile().Invoke(a));
}
}
