/// <summary>
///This is a test class for EncodingHelperTest and is intended
///to contain all EncodingHelperTest Unit Tests
///</summary>
[TestClass()]
public class EncodingHelperTest
{
/// <summary>
/// Normal test for this method.
///</summary>
[TestMethod()]
public void IsTextUTF8Test()
{
for (int i = 0; i < 1000; i++)
{
List<Char> chars = new List<char>();
chars.Add('中');
List<UnicodeCategory> temp = new List<UnicodeCategory>();
Random rd = new Random((int)(DateTime.Now.Ticks & 0x7FFFFFFF));
for (int j = 0; j < 255; j++)
{
char ch = (char)rd.Next(0xFFFF);
UnicodeCategory uc = System.Globalization.CharUnicodeInfo.GetUnicodeCategory(ch);
if (uc == UnicodeCategory.Surrogate ||
uc == UnicodeCategory.PrivateUse ||
uc == UnicodeCategory.OtherNotAssigned
)
{
j--;
}
else
{
chars.Add(ch);
temp.Add(uc);
}
}
string str = new string(chars.ToArray());
byte[] inputStream = Encoding.UTF8.GetBytes(str);
bool expected = true;
bool actual;
actual = EncodingHelper.IsTextUTF8(ref inputStream);
Assert.AreEqual(expected, actual, string.Format("UTF8_Assert Fails at:{0}", str));
inputStream = Encoding.GetEncoding(932).GetBytes(str);
expected = false;
actual = EncodingHelper.IsTextUTF8(ref inputStream);
Assert.AreEqual(expected, actual, string.Format("ShiftJIS_Assert Fails at:{0}", str));
}
}
/// <summary>
/// Check with All ASCII chars
/// </summary>
[TestMethod]
public void IsTextUTF8Test_AllASCII()
{
string str = "ABCDEFGHKLHSJKLDFHJKLHAJKLSHJKLHAJKLSHDJKLAHSDJKLHAJKLSDHJKLASHDJKLHASJKLDHJKLASD";
byte[] inputStream = Encoding.UTF8.GetBytes(str);
bool expected = false;
bool actual;
actual = EncodingHelper.IsTextUTF8(ref inputStream);
Assert.AreEqual(expected, actual, string.Format("UTF8_Assert Fails at:{0}", str));
}
}
| 
