public static void InstantiateExceptionWithLongErrorString()
{
// This test checks that Win32Exception supports error strings greater than 256 characters.
// Since we will have to rely on a message associated with an error code,
// we try to reduce the flakiness by doing the following.
// 1. Call FormatMessage to check whether the exception resource length >256 chars.
// 2. If true, we validate that Win32Exception class can retrieve the complete resource string.
// 3. If not we skip testing.
int errorCode = 0x268;
if (IsExceptionMessageLong(errorCode)) // Localized error string for 0x268 is not guaranteed to be >256 chars.
{
Win32Exception ex = new Win32Exception(errorCode);
Assert.NotEqual("Unknown error (0x268)", ex.Message);
Assert.True(ex.Message.Length > FirstPassBufferSize);
ex = new Win32Exception(0x23);
Assert.Equal(expected: "Unknown error (0x23)", actual: ex.Message);
}
}
