public void EqualityOperatorsRespectsEqualityMethod()
{
var pair = new TestOrderedPair <int, string>(1, "2");
var matchingPair = new TestOrderedPair <int, string>(1, "2");
var nonMatchingPair = new TestOrderedPair <int, string>(3, "4");
var reversedPair = new TestOrderedPair <string, int>("2", 1);
Assert.IsTrue(pair != null);
Assert.IsTrue((TestOrderedPair <int, string>)null == null);
Assert.IsTrue(pair == matchingPair);
Assert.IsTrue(pair != nonMatchingPair);
Assert.IsTrue(pair != reversedPair);
Assert.IsFalse(pair == null);
Assert.IsFalse((TestOrderedPair <int, string>)null != null);
Assert.IsFalse(pair != matchingPair);
Assert.IsFalse(pair == nonMatchingPair);
Assert.IsFalse(pair == reversedPair);
var matchingTypePair = new TestOrderedPair <int, int>(1, 2);
var matchingTypeReversedPair = new TestOrderedPair <int, int>(2, 1);
Assert.IsTrue(matchingTypePair != matchingTypeReversedPair);
Assert.IsFalse(matchingTypePair == matchingTypeReversedPair);
}
public void DefaultPairHasDefaultValues()
{
var pair = new TestOrderedPair <int, string>();
Assert.AreEqual(pair.X, 0);
Assert.AreEqual(pair.Y, null);
}
public void EqualityTestsWork()
{
var pair = new TestOrderedPair <int, string>(1, "2");
var matchingPair = new TestOrderedPair <int, string>(1, "2");
var nonMatchingPair = new TestOrderedPair <int, string>(3, "4");
var reversedPair = new TestOrderedPair <string, int>("2", 1);
Assert.IsFalse(pair.Equals(null));
Assert.IsTrue(pair.Equals(matchingPair));
Assert.IsFalse(pair.Equals(nonMatchingPair));
Assert.IsFalse(pair.Equals(reversedPair));
var matchingTypePair = new TestOrderedPair <int, int>(1, 2);
var matchingTypeReversedPair = new TestOrderedPair <int, int>(2, 1);
Assert.IsFalse(matchingTypePair.Equals(matchingTypeReversedPair));
}
// Just has to not throw.
public void GetHashCodeRespectsEquality()
{
var pairHash = new TestOrderedPair <int, string>(1, "2").GetHashCode();
var matchingPairHash = new TestOrderedPair <int, string>(1, "2").GetHashCode();
Assert.IsTrue(pairHash.Equals(matchingPairHash));
//Don't need to assert anything about the other cases, since inequality doesn't demand unequal hashes.
var pairHash2 = new TestOrderedPair <int, int>(1, 2).GetHashCode();
var matchingPairHash2 = new TestOrderedPair <int, int>(1, 2).GetHashCode();
Assert.IsTrue(pairHash2.Equals(matchingPairHash2));
//Don't need to assert anything about the other cases, since inequality doesn't demand unequal hashes.
var pairHash3 = new TestOrderedPair <int, string>(14254, "2v5gws45£Q$T5tyw").GetHashCode();
var matchingPairHash3 = new TestOrderedPair <int, string>(14254, "2v5gws45£Q$T5tyw").GetHashCode();
Assert.IsTrue(pairHash3.Equals(matchingPairHash3));
//Don't need to assert anything about the other cases, since inequality doesn't demand unequal hashes.
}
