I was trying to build a distribution package from the [0.1.16 source tarball on PyPI](https://pypi.org/project/argopy/0.1.16/#files). Running the tests gave the following error during startup:

```
argopy/tests/conftest.py:8: in
from mocked_http import mocked_httpserver
argopy/tests/helpers/mocked_http.py:101: in
class HTTPTestHandler(BaseHTTPRequestHandler):
argopy/tests/helpers/mocked_http.py:103: in HTTPTestHandler
"": get_html_landing_page(),
argopy/tests/helpers/mocked_http.py:92: in get_html_landing_page
html.append("

Mocked HTTP server is up and running, serving %i files

" % len(URI))
E NameError: name 'URI' is not defined
```

Working back through the code, I found the underlying problem was that `argopy/tests/test_data` is not included in the PyPI source tarball. Switching to the tarball that GitHib provides from the 0.1.16 tag works as that includes the test data.

Start by comparing the 0.1.16 PyPI source tarball with the GitHub tag tarball, then inspect argopy/tests/test_data and the test setup in argopy/tests/conftest.py and argopy/tests/helpers/mocked_http.py. Verify the source distribution contains the test data and run the tests; done means the packaged tests no longer fail with NameError: name 'URI' is not defined.

Written by the indexing model from the issue text.