Assert.AreEqual(object, object) method

Question

How does the Assert.AreEqual(object, object) method (in the namespace Microsoft.VisualStudio.TestTools.UnitTesting) determine whether the parameters are equal? Does it make use of the Object.Equals(object, object) method (in the System namespace)?

Annoyingly it isn't specified in the docs: msdn.microsoft.com/en-US/library/ms243413(v=VS.100).aspx — Marc Gravell
– Marc Gravell, Commented Jun 25, 2011 at 17:01
Yeah I couldn't find it on that page either. Does that mean there is no where to find out? — Clivest
– Clivest, Commented Jun 25, 2011 at 17:06

dkackman · Accepted Answer · 2011-06-25 17:10:20Z

8

using reflector you can see that it does indeed use Object.Equals.

public static void AreEqual<T>(T expected, T actual, string message, params object[] parameters)
{
    if (!object.Equals(expected, actual))
    {
        string str;
        if (((actual != null) && (expected != null)) && !actual.GetType().Equals(expected.GetType()))
        {
            str = (string) FrameworkMessages.AreEqualDifferentTypesFailMsg((message == null) ? string.Empty : ReplaceNulls(message), ReplaceNulls(expected), expected.GetType().FullName, ReplaceNulls(actual), actual.GetType().FullName);
        }
        else
        {
            str = (string) FrameworkMessages.AreEqualFailMsg((message == null) ? string.Empty : ReplaceNulls(message), ReplaceNulls(expected), ReplaceNulls(actual));
        }
        HandleFail("Assert.AreEqual", str, parameters);
    }
}

answered Jun 25, 2011 at 17:10

dkackman

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2 Comments

Clivest Over a year ago

Thanks. Is the Assert.AreEqual(object, object) similar?

dkackman Over a year ago

The object, object overload ultimately calls this one.

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