**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)



pass
class ExceptionThrowingCollector(collector.BaseFactCollector):
    name = 'exc_throwing'
    def __init__(self, collectors=None, namespace=None, exception=None):
        super(ExceptionThrowingCollector, self).__init__(collectors, namespace)
        self._exception = exception or CollectorException('collection failed')
    def collect(self, module=None, collected_facts=None):
        raise self._exception
class TestExceptionThrowingCollector(BaseFactsTest):
    __test__ = True
    gather_subset = ['exc_throwing']
    valid_subsets = ['exc_throwing']
    collector_class = ExceptionThrowingCollector
    def test_collect(self):
        module = self._mock_module()
        fact_collector = self.collector_class()
        self.assertRaises(CollectorException,
                          fact_collector.collect,
                          module=module,
                          collected_facts=self.collected_facts)
    def test_collect_with_namespace(self):
        module = self._mock_module()
        fact_collector = self.collector_class()
        self.assertRaises(CollectorException,
                          fact_collector.collect_with_namespace,
                          module=module,
                          collected_facts=self.collected_facts)
class TestApparmorFacts(BaseFactsTest):