public void UnitRdx_TryGetLELT()
{
var rd = new RankedDictionary <string, int?> {
{ "BB", 1 }, { "CC", 2 }
};
bool r0a = rd.TryGetLessThan("BB", out KeyValuePair <string, int?> p0a);
Assert.IsFalse(r0a);
Assert.AreEqual(default(string), p0a.Key);
Assert.AreEqual(default(int?), p0a.Value);
bool r0b = rd.TryGetLessThanOrEqual("AA", out KeyValuePair <string, int?> p0b);
Assert.IsFalse(r0b);
Assert.AreEqual(default(string), p0b.Key);
Assert.AreEqual(default(int?), p0b.Value);
bool r1 = rd.TryGetLessThan("CC", out KeyValuePair <string, int?> p1);
Assert.IsTrue(r1);
Assert.AreEqual("BB", p1.Key);
Assert.AreEqual(1, p1.Value);
bool r2 = rd.TryGetLessThanOrEqual("CC", out KeyValuePair <string, int?> p2);
Assert.IsTrue(r2);
Assert.AreEqual("CC", p2.Key);
Assert.AreEqual(2, p2.Value);
bool r3 = rd.TryGetLessThanOrEqual("DD", out KeyValuePair <string, int?> p3);
Assert.IsTrue(r3);
Assert.AreEqual("CC", p3.Key);
Assert.AreEqual(2, p3.Value);
}