public void NormalComparer()
{
var original = StringComparer.Ordinal;
var subject = new ReverseComparer<string>(original);
Assert.AreEqual(original.Compare("x", "y"), subject.Compare("y", "x"));
Assert.AreEqual(0, subject.Compare("x", "x"));
}
public void ReverseComparerTest()
{
var reverse = new ReverseComparer<string>(firstLetter);
GreaterThan(reverse,"apple", "banana");
LessThan( reverse,"banana", "apple");
EqualTo(reverse,"pear", "pineapple");
}
public void ReverseComparer_Unit_CompareTo_XIsLessThanY()
{
IComparer<String> comparer = StringComparer.OrdinalIgnoreCase;
ReverseComparer<String> target = new ReverseComparer<String>(comparer);
String x = "a";
String y = "b";
Int32 actual = target.Compare(x, y);
Assert.IsTrue(actual > 0);
}
public void ReverseComparer_Unit_CompareTo_XEqualsY()
{
IComparer<String> comparer = StringComparer.OrdinalIgnoreCase;
ReverseComparer<String> target = new ReverseComparer<String>(comparer);
String x = "a";
String y = "A";
Int32 actual = target.Compare(x, y);
Assert.AreEqual(0, actual);
}
public void ReverseComparer_Unit_CompareTo_YIsNull()
{
IComparer<String> comparer = StringComparer.OrdinalIgnoreCase;
ReverseComparer<String> target = new ReverseComparer<String>(comparer);
String x = "a";
String y = null;
Int32 actual = target.Compare(x, y);
Assert.IsTrue(actual < 0);
}
public void ReverseComparer_Unit_CompareTo_XIsNullAndYIsNull()
{
IComparer<String> comparer = StringComparer.OrdinalIgnoreCase;
ReverseComparer<String> target = new ReverseComparer<String>(comparer);
String x = null;
String y = null;
Int32 actual = target.Compare(x, y);
Assert.AreEqual(0, actual);
}