private void EnsureComparesConsistent(string left, string right)
{
String8 left8 = left.TestConvert();
String8 right8 = right.TestConvert();
CompareResult caseSensitiveExpected = ToResult(String.Compare(left, right, StringComparison.Ordinal));
CompareResult caseInsensitiveExpected = ToResult(String.Compare(left, right, StringComparison.OrdinalIgnoreCase));
Assert.AreEqual(caseSensitiveExpected, ToResult(left8.CompareTo(right8)), "Case sensitive comparison result incorrect.");
Assert.AreEqual(caseInsensitiveExpected, ToResult(left8.CompareTo(right8, true)), "Case insensitive comparison result incorrect.");
Assert.AreEqual(caseSensitiveExpected, ToResult(left8.CompareTo(right)), "Case sensitive String8 to string comparison result incorrect.");
Assert.AreEqual(caseInsensitiveExpected, ToResult(left8.CompareTo(right, true)), "Case insensitive String8 to string comparison result incorrect.");
// StartsWith and CompareAsPrefixTo
Assert.AreEqual(left.StartsWith(right), left8.StartsWith(right8));
Assert.AreEqual(left.StartsWith(right, StringComparison.OrdinalIgnoreCase), left8.StartsWith(right8, true));
Assert.AreEqual(right.StartsWith(left), right8.StartsWith(left8));
Assert.AreEqual(right.StartsWith(left, StringComparison.OrdinalIgnoreCase), right8.StartsWith(left8, true));
// Case Insensitive Stable is the insensitive order, then the sensitive order for ties
CompareResult caseInsensitiveStableExpected = (caseInsensitiveExpected == CompareResult.Equal ? caseSensitiveExpected : caseInsensitiveExpected);
Assert.AreEqual(caseInsensitiveStableExpected, ToResult(left8.CompareCaseInsensitiveStableTo(right8)), "Case insensitive stable String8 to string comparison result incorrect.");
}