Fix test failures following Alabaster's change in default sidebars

Author: AA-Turner

tests/test_builders/test_build_html.py

@@ -235,7 +235,18 @@ def test_html_style(app):
             not in result)
 
 
-@pytest.mark.sphinx('html', testroot='basic')
+@pytest.mark.sphinx(
+    'html',
+    testroot='basic',
+    # alabaster changed default sidebars in 1.0.0
+    confoverrides={'html_sidebars': {'**': [
+        'about.html',
+        'navigation.html',
+        'relations.html',
+        'searchbox.html',
+        'donate.html',
+    ]}},
+)
 def test_html_sidebar(app):
     ctx: dict[str, Any] = {}
 

tests/test_intl/test_intl.py

@@ -1685,7 +1685,11 @@ def test_gettext_disallow_fuzzy_translations(app):
     assert 'FEATURES' not in content
 
 
-@pytest.mark.sphinx('html', testroot='basic', confoverrides={'language': 'de'})
+@pytest.mark.sphinx(
+    'html',
+    testroot='basic',
+    confoverrides={'language': 'de', 'html_sidebars': {'**': ['searchbox.html']}},
+)
 def test_customize_system_message(make_app, app_params):
     try:
         # clear translators cache