Bug Test Runner. Bug or not?

Why do this test succeed?
I create two different gameObjects and take it transforms, why test think that are equals?

[Test]
public void TransformsTests()
{

var trnA = new GameObject("A").transform;
var trnB = new GameObject("B").transform;
Assert.AreEqual(trnA, trnB); // Not failed​

}

But if i change it, and take gameObjects instead transforms - it work fine and test failed.

[Test]
public void GameObjectsTests()
{

var goA = new GameObject("A");
var goB = new GameObject("B");
Assert.AreEqual(goA, goB); // Failed​

}