$ pytest -k test_plugin_hooks_have_tests -vv
====================================== test session starts ======================================
platform darwin -- Python 3.7.7, pytest-5.2.4, py-1.8.1, pluggy-0.13.1 -- /Users/simon/.local/share/virtualenvs/datasette-AWNrQs95/bin/python
cachedir: .pytest_cache
rootdir: /Users/simon/Dropbox/Development/datasette, inifile: pytest.ini
plugins: asyncio-0.10.0
collected 486 items / 475 deselected / 11 selected                                              

tests/test_plugins.py::test_plugin_hooks_have_tests[asgi_wrapper] XPASS                   [  9%]
tests/test_plugins.py::test_plugin_hooks_have_tests[extra_body_script] XPASS              [ 18%]
tests/test_plugins.py::test_plugin_hooks_have_tests[extra_css_urls] XPASS                 [ 27%]
tests/test_plugins.py::test_plugin_hooks_have_tests[extra_js_urls] XPASS                  [ 36%]
tests/test_plugins.py::test_plugin_hooks_have_tests[extra_template_vars] XPASS            [ 45%]
tests/test_plugins.py::test_plugin_hooks_have_tests[prepare_connection] XPASS             [ 54%]
tests/test_plugins.py::test_plugin_hooks_have_tests[prepare_jinja2_environment] XFAIL     [ 63%]
tests/test_plugins.py::test_plugin_hooks_have_tests[publish_subcommand] XFAIL             [ 72%]
tests/test_plugins.py::test_plugin_hooks_have_tests[register_facet_classes] XFAIL         [ 81%]
tests/test_plugins.py::test_plugin_hooks_have_tests[register_output_renderer] XFAIL       [ 90%]
tests/test_plugins.py::test_plugin_hooks_have_tests[render_cell] XPASS                    [100%]

========================= 475 deselected, 4 xfailed, 7 xpassed in 1.70s =========================

_Originally posted by @simonw in https://github.com/simonw/datasette/issues/771#issuecomment-634915104_