**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)



module = self._mock_module()
        module.run_command = Mock(return_value=(1, 'COMMAND\n', ''))
        collected_facts = {'ansible_system': 'Linux'}
        fact_collector = self.collector_class()
        facts_dict = fact_collector.collect(module=module,
                                            collected_facts=collected_facts)
        self.assertIsInstance(facts_dict, dict)
        self.assertEqual(facts_dict['service_mgr'], 'runit')
    
class TestSshPubKeyFactCollector(BaseFactsTest):
    __test__ = True
    gather_subset = ['!all', 'ssh_pub_keys']
    valid_subsets = ['ssh_pub_keys']
    fact_namespace = 'ansible_ssh_pub_leys'
    collector_class = SshPubKeyFactCollector
class TestUserFactCollector(BaseFactsTest):
    __test__ = True
    gather_subset = ['!all', 'user']
    valid_subsets = ['user']
    fact_namespace = 'ansible_user'
    collector_class = UserFactCollector
class TestVirtualFacts(BaseFactsTest):
    __test__ = True
    gather_subset = ['!all', 'virtual']
    valid_subsets = ['virtual']
    fact_namespace = 'ansible_virtual'
    collector_class = VirtualCollector