Difference Between AreSame and AreEqual

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1.Assert.AreSame Method
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Verifies that specified object variables refer to the same objects.
http://msdn.microsoft.com/en-us/library/microsoft.visualstudio.testtools.unittesting.assert.aresame(v=VS.100).aspx

2.Assert.AreEqual Method
============================
Verifies that specified values are equal.
http://msdn.microsoft.com/en-us/library/microsoft.visualstudio.testtools.unittesting.assert.areequal(v=VS.100).aspx

List of test methods:
==============
1. Passed.

[TestMethod]
public void IsStringEqualTest
{
const string INPUT = "Obama";
const string EXPEXTED = "Obama"
Assert.AreEqual(EXPEXTED, INPUT);
}

2. Failed
.[TestMethod]
public void IsStringEqualNoIgnoreCaseTest
{
const string INPUT = "Obama";
const string EXPEXTED = "obama"
Assert.AreEqual(EXPEXTED, INPUT);
}

3. Passed.
[TestMethod]
public void IsStringEqualWithIgnoreCaseTest()
{
const string INPUT = "Obama";
const string EXPEXTED = "obama"
Assert.AreEqual(EXPEXTED, INPUT, true);
}

4. Failed
// Please use Assert.AreSame for only ref types.
// For value type useAssert.AreEqual !!!
[TestMethod]
public void IntegerSameTest()
{
int INPUT = 100;
int EXPEXTED = 100;
Assert.AreSame(EXPEXTED, INPUT);
}

5.Passed
.[TestMethod]
public void IntegerSameTest()
{
int INPUT = 100;
int EXPEXTED = 100;
Assert.AreEqual(EXPEXTED, INPUT);
}

Conclution:
===============================
Use Assert.AreSame for only ref types.
For value type use Assert.AreEqual only.===============================