Incorrect test result for unit test of TimeZoneInfo member

Info: using .NET 4.0 and VS 2012

Hi,

I'm about to unit test my own class which has got a member of type TimeZoneInfo. However, when I try to consider this member in my test, it always fails.

The following is a simplified example which verifies that _timeZone has correctly been initialized during instantiation process:

public class MyClass
{
  public TimeZoneInfo _timeZone;

  public MyClass(string timeZoneId)
  {
    _timeZone = TimeZoneInfo.FindSystemTimeZoneById(timeZoneId);
  }
}

[TestMethod()]
public void MyClassCtorTest()
{
  TimeZoneInfo expected = TimeZoneInfo.FindSystemTimeZoneById("W. Europe Standard Time");
  TimeZoneInfo actual = new MyClass("W. Europe Standard Time")._timeZone;

  Assert.IsTrue(expected.Equals(actual)); //This test passes!

  Assert.AreEqual(expected, actual); //This test fails!
}

I found out that Assert.IsTrue(...) passes whereas Assert.AreEqual(...) fails: "Assert.AreEqual failed. Expected:<(UTC+01:00) Amsterdam, Berlin, Bern, Rom, Stockholm, Wien>. Actual:<(UTC+01:00) Amsterdam, Berlin, Bern, Rom, Stockholm, Wien>."

Since "Equals" is overridden in TimeZoneInfo class, I don't get what's going on, here. Could you help me to make pass the second assertion? Thank you very much in advance!

Rob