private string TestCompareInternal(int result, string v1, string v2, StringComparisonEx comparisonType, bool?nullIsLower, Func <string, bool> isNull)
{
if (nullIsLower.HasValue)
{
return(TestCompareInternal1(nullIsLowerValue: nullIsLower.Value));
}
else
{
return(TestCompareInternal1(nullIsLowerValue: false)
?? TestCompareInternal1(nullIsLowerValue: true));
}
string TestCompareInternal1(bool nullIsLowerValue)
{
if (result != Math.Sign(StringComparerEx.Compare(v1: v1, v2: v2, comparisonType: comparisonType, nullIsLower: nullIsLowerValue, isNull: isNull)))
{
v1 = (v1 is null) ? "null" : $@"""{v1}""";
v2 = (v2 is null) ? "null" : $@"""{v2}""";
return($@"{nameof(StringComparerEx)}.{nameof(StringComparerEx.Compare)}({nameof(v1)}: {v1}, {nameof(v2)}: {v2}, {nameof(comparisonType)}: {Enum.GetName(typeof(StringComparisonEx), comparisonType)}, {nameof(nullIsLower)}: {(nullIsLowerValue ? "true" : "false")}) != {result}");
}
if (result != -Math.Sign(StringComparerEx.Compare(v1: v2, v2: v1, comparisonType: comparisonType, nullIsLower: nullIsLowerValue, isNull: isNull)))
{
v1 = (v1 is null) ? "null" : $@"""{v1}""";
v2 = (v2 is null) ? "null" : $@"""{v2}""";
return($@"{nameof(StringComparerEx)}.{nameof(StringComparerEx.Compare)}({nameof(v1)}: {v2}, {nameof(v2)}: {v1}, {nameof(comparisonType)}: {Enum.GetName(typeof(StringComparisonEx), comparisonType)}, {nameof(nullIsLower)}: {(nullIsLowerValue ? "true" : "false")}) != {result}");
}
return(null);
}
}
public void StringComparerEx_DifferentStringAreDifferent()
{
string a = "acoutur", b = "ëcöutêr";
var stringComparer = new StringComparerEx(CultureInfo.InvariantCulture, CompareOptions.IgnoreCase | CompareOptions.IgnoreNonSpace);
bool result = stringComparer.Equals(a, b);
Assert.IsFalse(result);
}
public void StringComparerEx_AccentedStringAreEqual3()
{
string a = "écoûtèr", b = "ecouter";
var stringComparer = new StringComparerEx(CultureInfo.InvariantCulture, CompareOptions.IgnoreCase | CompareOptions.IgnoreNonSpace);
bool result = stringComparer.Equals(a, b);
Assert.IsTrue(result);
}
