FIX: use config-inited event to register config

pyproject.toml

@@ -13,6 +13,18 @@ additional-compiled-static-assets = [
 testpaths = [
     "tests"
 ]
+filterwarnings = [
+  "error",
+  'ignore:Jupyter is migrating its paths to use standard platformdirs:DeprecationWarning',
+  'ignore:The frontend\.OptionParser class will be replaced:DeprecationWarning',
+  'ignore:The frontend\.Option class will be removed:DeprecationWarning',
+  'ignore:nodes\.Node\.traverse\(\) is obsoleted by Node\.findall\(\):PendingDeprecationWarning',
+  # jupyter-client throws this
+  'ignore:datetime\.datetime\.utcfromtimestamp\(\) is deprecated:DeprecationWarning',
+  'ignore:datetime\.datetime\.utcnow\(\) is deprecated:DeprecationWarning',
+  # Sphinx triggers this
+  '''ignore:'imghdr' is deprecated and slated for removal in Python 3\.13:DeprecationWarning''',
+]
 
 [project]
 name = "sphinx-book-theme"

src/sphinx_book_theme/__init__.py

@@ -4,13 +4,13 @@
 from pathlib import Path
 from functools import lru_cache
 
-from docutils.parsers.rst.directives.body import Sidebar
 from docutils import nodes as docutil_nodes
 from sphinx.application import Sphinx
 from sphinx.locale import get_translation
 from sphinx.util import logging
 from pydata_sphinx_theme.utils import get_theme_options_dict
 
+from .directives import Margin
 from .nodes import SideNoteNode
 from .header_buttons import (
     prep_header_buttons,
@@ -179,32 +179,9 @@ def check_deprecation_keys(app):
             )
 
 
-class Margin(Sidebar):
-    """Goes in the margin to the right of the page."""
-
-    optional_arguments = 1
-    required_arguments = 0
-
-    def run(self):
-        """Run the directive."""
-        if not self.arguments:
-            self.arguments = [""]
-        nodes = super().run()
-        nodes[0].attributes["classes"].append("margin")
-
-        # Remove the "title" node if it is empty
-        if not self.arguments:
-            nodes[0].children.pop(0)
-        return nodes
-
-
 def update_general_config(app):
     theme_dir = get_html_theme_path()
-    # Update templates for sidebar. Needed for jupyter-book builds as jb
-    # uses an instance of Sphinx class from sphinx.application to build the app.
-    # The __init__ function of which calls self.config.init_values() just
-    # before emitting `config-inited` event. The init_values function overwrites
-    # templates_path variable.
+
     app.config.templates_path.append(os.path.join(theme_dir, "components"))
 
 
@@ -245,11 +222,20 @@ def setup(app: Sphinx):
     app.connect("builder-inited", check_deprecation_keys)
     app.connect("builder-inited", update_sourcename)
     app.connect("builder-inited", update_context_with_repository_info)
-    app.connect("builder-inited", update_general_config)
     app.connect("html-page-context", add_metadata_to_page)
     app.connect("html-page-context", hash_html_assets)
     app.connect("html-page-context", update_templates)
 
+    # This extension has both theme-like and extension-like features.
+    # Themes are initialised immediately before use, thus we cannot
+    # rely on an event to set the config - the theme config must be
+    # set in setup(app):
+    update_general_config(app)
+    # Meanwhile, extensions are initialised _first_, and any config
+    # values set during setup() will be overwritten. We must therefore
+    # register the `config-inited` event to set these config options
+    app.connect("config-inited", update_general_config)
+
     # Nodes
     SideNoteNode.add_node(app)
 
@@ -266,10 +252,6 @@ def setup(app: Sphinx):
     # Post-transforms
     app.add_post_transform(HandleFootnoteTransform)
 
-    # Update templates for sidebar, for builds where config-inited is not called
-    # (does not work in case of jupyter-book)
-    app.config.templates_path.append(os.path.join(theme_dir, "components"))
-
     return {
         "parallel_read_safe": True,
         "parallel_write_safe": True,

src/sphinx_book_theme/directives.py

@@ -0,0 +1,20 @@
+from docutils.parsers.rst.directives.body import Sidebar
+
+
+class Margin(Sidebar):
+    """Goes in the margin to the right of the page."""
+
+    optional_arguments = 1
+    required_arguments = 0
+
+    def run(self):
+        """Run the directive."""
+        if not self.arguments:
+            self.arguments = [""]
+        nodes = super().run()
+        nodes[0].attributes["classes"].append("margin")
+
+        # Remove the "title" node if it is empty
+        if not self.arguments:
+            nodes[0].children.pop(0)
+        return nodes

tests/test_build.py

@@ -1,7 +1,6 @@
 import os
 from pathlib import Path
 from shutil import copytree, rmtree
-from subprocess import check_call
 from importlib.metadata import version
 from packaging.version import parse
 
@@ -28,9 +27,10 @@ def __init__(self, app: SphinxTestApp, src: Path):
             f".sphinx{sphinx.version_info[0]}"  # software version tracking for fixtures
         )
 
-    def build(self, assert_pass=True):
+    def build(self, assert_pass=True, assert_no_warnings=True):
         self.app.build()
-        assert self.warnings == "", self.status
+        if assert_no_warnings:
+            assert self.warnings == "", self.status
         return self
 
     @property
@@ -62,14 +62,12 @@ def _func(src_folder, **kwargs):
     yield _func
 
 
-def test_parallel_build():
-    # We cannot use the sphinx_build_factory because SpinxTestApp does
-    # not have a way to pass parallel=2 to the Sphinx constructor
-    # https://github.com/sphinx-doc/sphinx/blob/d8c006f1c0e612d0dc595ae463b8e4c3ebee5ca4/sphinx/testing/util.py#L101
-    check_call(
-        f"sphinx-build -j 2 -W -b html {path_tests}/sites/parallel-build build",
-        shell=True,
-    )
+def test_parallel_build(sphinx_build_factory):
+    sphinx_build = sphinx_build_factory("parallel-build", parallel=2)  # type: SphinxBuild
+    sphinx_build.build(
+        assert_pass=True, assert_no_warnings=False
+    )  # TODO: filter these warnings
+    assert (sphinx_build.outdir / "index.html").exists(), sphinx_build.outdir.glob("*")
 
 
 def test_build_book(sphinx_build_factory, file_regression):

tests/test_build/build__pagetoc--page-onetitlenoheadings.html

@@ -0,0 +1,2 @@
+<div class="bd-sidebar-secondary bd-toc">
+</div>