How do I verify that the expected array is the actual array in MSTest?

Question

The following method fails:

[TestMethod]
public void VerifyArrays()
{
    int[] actualArray = { 1, 3, 7 };
    Assert.AreEqual(new int[] { 1, 3, 7 }, actualArray);
}

How do I make it pass without iterating over the collection?

Answer 1

Microsoft has provided a helper class CollectionAssert.

[TestMethod]
public void VerifyArrays()
{
    int[] actualArray = { 1, 3, 7 };
    CollectionAssert.AreEqual(new int[] { 1, 3, 7 }, actualArray);
}

Answer 2

You can use the Enumerable.SequenceEqual() method.

[TestMethod]
public void VerifyArrays()
{
    int[] actualArray = { 1, 3, 7 };
    int[] expectedArray = { 1, 3, 7 };

    Assert.IsTrue(actualArray.SequenceEqual(expectedArray));
}