**SUMMARY**

Test names must be unique per scope otherwise the second test overrides the first one with the same name.

**ISSUE TYPE**
- Bugfix Pull Request

**COMPONENT NAME**
ansible/test/units/parsing/test_mod_args.py
ansible/test/units/module_utils/facts/test_collectors.py
ansible/test/units/module_utils/common/validation/test_check_required_if.py
ansible/test/units/module_utils/basic/test_deprecate_warn.py

**ADDITIONAL INFORMATION**

For example if you had a test file that does:

```
def test_a():
    pass

def test_a():
    pass
```

Then only the second `test_a` will be ran. More details [here](https://codereview.doctor/features/python/best-practice/avoid-duplicate-unit-test-names).

These are the tests that are overriding previously defined tests due to this problem:

https://github.com/ansible/ansible/blob/de9a3bda2cfaace7e3d25b0c4774eefdd9514687/test/units/parsing/test_mod_args.py#L121
https://github.com/ansible/ansible/blob/de9a3bda2cfaace7e3d25b0c4774eefdd9514687/test/units/module_utils/facts/test_collectors.py#L397
https://github.com/ansible/ansible/blob/de9a3bda2cfaace7e3d25b0c4774eefdd9514687/test/units/module_utils/facts/test_collectors.py#L413
https://github.com/ansible/ansible/blob/de9a3bda2cfaace7e3d25b0c4774eefdd9514687/test/units/module_utils/common/validation/test_check_required_if.py#L56
https://github.com/ansible/ansible/blob/de9a3bda2cfaace7e3d25b0c4774eefdd9514687/test/units/module_utils/basic/test_deprecate_warn.py#L74

I found this issue automatically, see other issues [here](https://codereview.doctor/ansible/ansible)



__test__ = True
    gather_subset = ['!all', 'selinux']
    valid_subsets = ['selinux']
    fact_namespace = 'ansible_selinux'
    collector_class = SelinuxFactCollector
    def test_no_selinux(self):
        with patch('ansible.module_utils.facts.system.selinux.HAVE_SELINUX', False):
            module = self._mock_module()
            fact_collector = self.collector_class()
            facts_dict = fact_collector.collect(module=module)
            self.assertIsInstance(facts_dict, dict)
            self.assertEqual(facts_dict['selinux']['status'], 'Missing selinux Python library')
            return facts_dict
class TestServiceMgrFacts(BaseFactsTest):
    __test__ = True
    gather_subset = ['!all', 'service_mgr']
    valid_subsets = ['service_mgr']
    fact_namespace = 'ansible_service_mgr'
    collector_class = ServiceMgrFactCollector
    
    @patch('ansible.module_utils.facts.system.service_mgr.get_file_content', return_value=None)
    @patch('ansible.module_utils.facts.system.service_mgr.ServiceMgrFactCollector.is_systemd_managed', return_value=False)
    @patch('ansible.module_utils.facts.system.service_mgr.ServiceMgrFactCollector.is_systemd_managed_offline', return_value=False)
    @patch('ansible.module_utils.facts.system.service_mgr.os.path.exists', return_value=False)
    def test_service_mgr_runit(self, mock_gfc, mock_ism, mock_ismo, mock_ope):