Unit test confirming all plugin hooks are documented

tests/test_docs.py

@@ -9,14 +9,17 @@
 import re
 
 docs_path = Path(__file__).parent.parent / 'docs'
-markdown = (docs_path / 'config.rst').open().read()
-setting_heading_re = re.compile(r'(\w+)\n\-+\n')
-setting_headings = set(setting_heading_re.findall(markdown))
+
+
+def get_headings(filename, underline="-"):
+    markdown = (docs_path / filename).open().read()
+    heading_re = re.compile(r'(\S+)\n\{}+\n'.format(underline))
+    return set(heading_re.findall(markdown))
 
 
 @pytest.mark.parametrize('config', app.CONFIG_OPTIONS)
 def test_config_options_are_documented(config):
-    assert config.name in setting_headings
+    assert config.name in get_headings("config.rst")
 
 
 @pytest.mark.parametrize('name,filename', (
@@ -35,3 +38,13 @@ def test_help_includes(name, filename):
     # because it doesn't know that cli will be aliased to datasette
     expected = expected.replace('Usage: datasette', 'Usage: cli')
     assert expected == actual
+
+
+@pytest.mark.parametrize('plugin', [
+    name for name in dir(app.pm.hook) if not name.startswith('_')
+])
+def test_plugin_hooks_are_documented(plugin):
+    headings = [
+        s.split("(")[0] for s in get_headings("plugins.rst", "~")
+    ]
+    assert plugin in headings