pytest scope function not creating 2 instances of browser

Question

I am trying to run 2 tests in parallel using xdist so before that I tried to make each test independent.

This is where I'm setting up browser.

@pytest.fixture(scope="function")
def moduleSetup(request):
    driver = webdriver.Firefox()
    def fin():
        driver.close()
    request.addfinalizer(fin)
    return driver

And here are 2 tests I'm running

def test_1(moduleSetup):
    print moduleSetup
    moduleSetup.get('http://www.foo.com')
    time.sleep(5)

def test_2(moduleSetup):
    print moduleSetup
    moduleSetup.get('www.bar.com')
    time.sleep(5)

But when I run tests I get

<selenium.webdriver.firefox.webdriver.WebDriver (session="5aae6a2d-6940-1c47-8c21-8403f84a2acb")>
...
.<selenium.webdriver.firefox.webdriver.WebDriver (session="5aae6a2d-6940-1c47-8c21-8403f84a2acb")>

As you can see it is using same browser instance. I thought if I set scope as function it will create 2 browser instances?

If above works end goal is run tests in parallel like maybe using py.test -d --tx 3*popen//python=python2.7 test.py -s? So it will launch 2 browsers simultaneously.