public void EnumComparerTest()
{
AdvancedComparer <Direction> comparer = AdvancedComparer <Direction> .System;
Assert.IsNotNull(comparer);
Assert.AreEqual("EnumComparer`2", comparer.Implementation.GetType().Name);
Assert.Greater(comparer.Compare(Direction.Positive, Direction.Negative), 0);
Assert.Greater(comparer.Compare(Direction.Positive, Direction.None), 0);
Assert.Less(comparer.Compare(Direction.Negative, Direction.Positive), 0);
Assert.Less(comparer.Compare(Direction.Negative, Direction.None), 0);
Assert.AreEqual(comparer.Compare(Direction.Positive, Direction.Positive), 0);
Assert.AreEqual(comparer.Compare(Direction.None, Direction.None), 0);
Assert.AreEqual(comparer.Compare(Direction.Negative, Direction.Negative), 0);
Assert.IsTrue(comparer.Equals(comparer.ValueRangeInfo.MaxValue, Direction.Positive));
Assert.IsTrue(comparer.Equals(comparer.ValueRangeInfo.MinValue, Direction.Negative));
Assert.IsFalse(comparer.Equals(Direction.Positive, Direction.Negative));
Assert.AreEqual(comparer.GetNearestValue(Direction.Negative, Direction.Negative), Direction.Negative);
Assert.AreEqual(comparer.GetNearestValue(Direction.Negative, Direction.Positive), Direction.None);
Assert.AreEqual(comparer.GetNearestValue(Direction.Positive, Direction.Negative), Direction.None);
Assert.AreEqual(comparer.GetNearestValue(Direction.Positive, Direction.Positive), Direction.Positive);
Assert.AreEqual(comparer.GetNearestValue(Direction.None, Direction.Negative), Direction.Negative);
Assert.AreEqual(comparer.GetNearestValue(Direction.None, Direction.Positive), Direction.Positive);
Assert.IsFalse(comparer.ValueRangeInfo.HasDeltaValue);
}
public void StringComparerTest()
{
string o1 = "1";
string o2 = "2";
AdvancedComparer <string> comparer = AdvancedComparer <string> .Default;
Assert.IsNotNull(comparer);
AssertEx.IsPatternMatch(comparer.Implementation.GetType().Name, "StringComparer*");
Assert.IsFalse(comparer.Equals(o2, o1));
Assert.IsFalse(comparer.GetHashCode(o1) == comparer.GetHashCode(o2));
Assert.IsTrue(comparer.Equals("1", o1));
Assert.IsTrue(comparer.Equals("2", o2));
}
private void CheckComparisons(Xtensive.Tuples.Tuple x, Xtensive.Tuples.Tuple y, int expectedResult)
{
expectedResult = Normalize(expectedResult);
bool boolResult = expectedResult == 0;
Assert.AreEqual(boolResult, x.Equals(y));
Assert.AreEqual(boolResult, equalityComparer.Equals(x, y));
Assert.AreEqual(boolResult, advancedComparer.Equals(x, y));
// Reverse
expectedResult *= -1;
Assert.AreEqual(boolResult, equalityComparer.Equals(y, x));
Assert.AreEqual(boolResult, y.Equals(x));
Assert.AreEqual(boolResult, advancedComparer.Equals(y, x));
}
public void Int32ComparerTest()
{
int o1 = 1;
int o2 = 2;
Func <int, int> hash = delegate(int item) { return(item.GetHashCode()); };
long a = hash(o2);
Func <long, int> hash1 = delegate(long item) { return(item.GetHashCode()); };
long a1 = hash1(o2);
AdvancedComparer <int> comparer = AdvancedComparer <int> .Default;
Assert.IsNotNull(comparer);
AssertEx.IsPatternMatch(comparer.Implementation.GetType().Name, "Int32Comparer*");
Assert.IsFalse(comparer.Equals(o2, o1));
Assert.IsFalse(comparer.GetHashCode(o1) == comparer.GetHashCode(o2));
Assert.IsTrue(comparer.Equals(1, o1));
Assert.IsTrue(comparer.Equals(2, o2));
}
private bool CheckIfEquals <T>(AdvancedComparer <T> comparer, T x, T y)
{
// Tuple is no longer implementation of IComparable
// so need to use Equals
if (x is Tuple)
{
return(comparer.Equals(x, y));
}
return(comparer.Compare(x, y) == 0);
}
public void InheritedComparerTest()
{
Wrapper2a <int, int> o1 = new Wrapper2a <int, int>(0, 1);
Wrapper2a <int, int> o2 = new Wrapper2a <int, int>(0, 2);
AdvancedComparer <Wrapper2a <int, int> > comparer = AdvancedComparer <Wrapper2a <int, int> > .Default;
Assert.IsNotNull(comparer);
AssertEx.IsPatternMatch(comparer.Implementation.GetType().Name, "BaseComparerWrapper*");
Assert.IsTrue(comparer.Equals(o2, o1));
Assert.IsTrue(comparer.GetHashCode(o1) == comparer.GetHashCode(o2));
}