doc: Add missing modules to dropdown list

docs/theme/extra/templates/navbar_links.html

@@ -13,6 +13,7 @@
             ("Fs-module.html","Filesystem"), \
             ("Gnome-module.html","GNOME"), \
             ("Hotdoc-module.html","Hotdoc"), \
+            ("i18n-module.html","i18n"), \
             ("Icestorm-module.html","Icestorm"), \
             ("Keyval-module.html","Keyval"), \
             ("Pkgconfig-module.html","Pkgconfig"), \
@@ -20,11 +21,12 @@
             ("Python-module.html","Python"), \
             ("Qt4-module.html","Qt4"), \
             ("Qt5-module.html","Qt5"), \
+            ("Qt6-module.html","Qt6"), \
             ("RPM-module.html","RPM"), \
             ("Rust-module.html","Rust"), \
+            ("Simd-module.html","Simd"), \
             ("SourceSet-module.html","SourceSet"), \
-            ("Windows-module.html","Windows"), \
-            ("i18n-module.html","i18n")]:
+            ("Windows-module.html","Windows")]:
         <li>
             <a href="@tup[0]">@tup[1]</a>
         </li>

run_unittests.py

@@ -1849,6 +1849,22 @@ class DataTests(unittest.TestCase):
             if f not in exceptions and not f.startswith('_include'):
                 self.assertIn(f, toc)
 
+    def test_modules_in_navbar(self):
+        '''
+        Test that each module is referenced in navbar_links.html
+        '''
+        with open("docs/theme/extra/templates/navbar_links.html", encoding='utf-8') as f:
+            html = f.read().lower()
+        self.assertIsNotNone(html)
+        for f in Path('mesonbuild/modules').glob('*.py'):
+            if f.name in {'modtest.py', 'qt.py', '__init__.py'}:
+                continue
+            name = f'{f.stem}-module.html'
+            name = name.replace('unstable_', '')
+            name = name.replace('python3', 'python-3')
+            name = name.replace('_', '-')
+            self.assertIn(name, html)
+
     def test_vim_syntax_highlighting(self):
         '''
         Ensure that vim syntax highlighting files were updated for new