nose2 Execute Tests from Multiple Classes in a Single Module

Question

I have a module with multiple Classes in it. For example, module tests.py:

class Test_method_1(unittest.TestCase):
    def test_1_1(self):
        # test steps
        assert True

    def test_1_2(self):
        # test steps
        assert False

class Test_method_2(unittest.TestCase):
    def test_2_1(self):
        # test steps
        assert True

    def test_2_2(self):
        # test steps
        assert False

When I execute: nose2 tests

nose2 will only execute the tests in class Test_method_1. If I execute:

nose2 tests.Test_method_2

nose2 executes the tests in Test_method2. How do I get nose2 to execute all of the tests in both classes?