public static string GetLevelByNumber(string levelName, int num)
{
NameAndNumber levelInfo = GetLevelNameAndNumber(levelName);
levelInfo.SetNumber(num);
return(levelInfo.GetLevelName());
}
public static string GetLevelByAdding(string levelName, int add)
{
NameAndNumber levelInfo = GetLevelNameAndNumber(levelName);
levelInfo.AddToNumber(add);
return(levelInfo.GetLevelName());
}
static void AssertCompareEqual(IEqualityComparer <NameAndNumber> comparer, NameAndNumber x, NameAndNumber y)
{
Assert.IsTrue(comparer.Equals(x, y));
Assert.IsTrue(comparer.Equals(y, x));
if (x != null && y != null)
{
Assert.AreEqual(comparer.GetHashCode(x), comparer.GetHashCode(y));
}
}
static void AssertCompareNotEqual(IEqualityComparer<NameAndNumber> comparer, NameAndNumber x, NameAndNumber y)
{
Assert.IsFalse(comparer.Equals(x, y));
Assert.IsFalse(comparer.Equals(y, x));
if (x != null && y != null)
{
Assert.AreNotEqual(comparer.GetHashCode(x), comparer.GetHashCode(y));
}
}
public NameAndNumber NumberConversionService(string name, decimal number)
{
var _nameAndNumber = new NameAndNumber
{
Name = name,
NumberInWords = NumberToWordConversion.NumberToCurrencyText(number)
};
return(_nameAndNumber);
}
public void ExplicitComparerTest()
{
NameAndNumber lowerA = new NameAndNumber { Name = "a", Number = 10 };
NameAndNumber upperA = new NameAndNumber { Name = "A", Number = 10 };
IEqualityComparer<NameAndNumber> ordinalComparer = new ProjectionEqualityComparer<NameAndNumber, string>
(z => z.Name, StringComparer.Ordinal);
IEqualityComparer<NameAndNumber> insensitiveComparer = new ProjectionEqualityComparer<NameAndNumber, string>
(z => z.Name, StringComparer.OrdinalIgnoreCase);
AssertCompareNotEqual(ordinalComparer, lowerA, upperA);
AssertCompareEqual(insensitiveComparer, lowerA, upperA);
}
public void ExplicitComparerTest()
{
// a is greater than Z with an ordinal comparison, but not with a case-insensitive ordinal comparison
NameAndNumber lowerA = new NameAndNumber { Name = "a", Number = 10 };
NameAndNumber upperZ = new NameAndNumber { Name = "Z", Number = 10 };
IComparer<NameAndNumber> ordinalComparer = new ProjectionComparer<NameAndNumber, string>
(z => z.Name, StringComparer.Ordinal);
IComparer<NameAndNumber> insensitiveComparer = new ProjectionComparer<NameAndNumber, string>
(z => z.Name, StringComparer.OrdinalIgnoreCase);
Assert.Greater(ordinalComparer.Compare(lowerA, upperZ), 0);
Assert.Less(insensitiveComparer.Compare(lowerA, upperZ), 0);
}
public void ExplicitComparerTest()
{
NameAndNumber lowerA = new NameAndNumber {
Name = "a", Number = 10
};
NameAndNumber upperA = new NameAndNumber {
Name = "A", Number = 10
};
IEqualityComparer <NameAndNumber> ordinalComparer = new ProjectionEqualityComparer <NameAndNumber, string>
(z => z.Name, StringComparer.Ordinal);
IEqualityComparer <NameAndNumber> insensitiveComparer = new ProjectionEqualityComparer <NameAndNumber, string>
(z => z.Name, StringComparer.OrdinalIgnoreCase);
AssertCompareNotEqual(ordinalComparer, lowerA, upperA);
AssertCompareEqual(insensitiveComparer, lowerA, upperA);
}
public void ExplicitComparerTest()
{
// a is greater than Z with an ordinal comparison, but not with a case-insensitive ordinal comparison
NameAndNumber lowerA = new NameAndNumber {
Name = "a", Number = 10
};
NameAndNumber upperZ = new NameAndNumber {
Name = "Z", Number = 10
};
IComparer <NameAndNumber> ordinalComparer = new ProjectionComparer <NameAndNumber, string>
(z => z.Name, StringComparer.Ordinal);
IComparer <NameAndNumber> insensitiveComparer = new ProjectionComparer <NameAndNumber, string>
(z => z.Name, StringComparer.OrdinalIgnoreCase);
Assert.Greater(ordinalComparer.Compare(lowerA, upperZ), 0);
Assert.Less(insensitiveComparer.Compare(lowerA, upperZ), 0);
}
static NameAndNumber GetLevelNameAndNumber(string levelName)
{
NameAndNumber ret = new NameAndNumber();
string levelNumS = "";
for (int i = levelName.Length - 1; i >= 0; i--)
{
char ch = levelName[i];
if (char.IsDigit(ch))
{
levelNumS = ch + levelNumS;
}
else
{
break;
}
}
ret.number = int.Parse(levelNumS);
ret.numberString = ("" + ret.number).PadLeft(levelNumS.Length, '0');
ret.name = levelName.Substring(0, levelName.Length - ret.numberString.Length);
return(ret);
}
