VS 2010單元測試和無符號類型

Question

我將單元測試從NUnit轉換到VisualStudio 2010單元測試框架。下面ByteToUShortTest()方法失敗與消息：

Assert.AreEqual failed. Expected:<System.UInt16[]>. Actual:<System.UInt16[]>.

[TestMethod, CLSCompliant(false)] 
public void ByteToUShortTest() 
{ 
    var array = new byte[2]; 
    Assert.AreEqual(ByteToUShort(array), new ushort[1]); 
} 

由測試調用的代碼是：

[CLSCompliant(false)] 
public static ushort[] ByteToUShort(byte[] array) 
{ 
    return ByteToUShort(array, 0, array.Length, EndianType.LittleEndian); 
} 

public enum EndianType 
{ 
    LittleEndian, 
    BigEndian 
} 

[CLSCompliant(false)] 
public static ushort[] ByteToUShort(byte[] array, int offset, int length, EndianType endianType) 
{ 
    // argument validation 
    if ((length + offset) > array.Length) 
     throw new ArgumentException("The length and offset provided extend past the end of the array."); 
    if ((length % 2) != 0) 
     throw new ArgumentException("The number of bytes to convert must be a multiple of 2.", "length"); 

    var temp = new ushort[length/2]; 

    for (int i = 0, j = offset; i < temp.Length; i++) 
    { 
     if (endianType == EndianType.LittleEndian) 
     { 
      temp[i] = (ushort)(((uint)array[j++] & 0xFF) | (((uint)array[j++] & 0xFF) << 8)); 
     } 
     else 
     { 
      temp[i] = (ushort)(((uint)array[j++] & 0xFF) << 8 | ((uint)array[j++] & 0xFF)); 
     } 
    } 

    return temp; 
} 

該試驗成功地使用Nunit運行。任何想法爲什麼類型應該是不同的？

解

對於單和多維陣列，以及用於任何ICollection，所述的VisualStudio 2010單元測試框架提供了CollectionAssert類。

[TestMethod, CLSCompliant(false)] 
public void ByteToUShortTest() 
{ 
    var array = new byte[2]; 
    CollectionAssert.AreEqual(ByteToUShort(array), new ushort[1]); 
} 

Answer 1

它不是不同的類型，而是實例。你正在比較兩個不同的數組。