feature: support mike's version selector setting

Signed-off-by: Timothée Mazzucotelli <dev@pawamoy.fr>

python/tests/integration/test_config.py

@@ -30,6 +30,8 @@
 
 from __future__ import annotations
 
+import json
+import re
 from typing import TYPE_CHECKING, Any
 
 import pytest
@@ -156,6 +158,64 @@ def test_build_with_config_in_watch(
     assert (tmp_path / "site" / "index.html").is_file()
 
 
+@pytest.mark.parametrize("config_format", ["yaml", "toml"])
+@pytest.mark.parametrize(
+    ("enabled", "version_selector", "expected"),
+    [
+        (None, None, True),
+        (None, True, True),
+        (None, False, False),
+        (True, False, False),
+        (False, False, True),
+    ],
+)
+def test_mike_version_selector_controls_theme_configuration(
+    tmp_path: Path,
+    config_format: str,
+    enabled: bool | None,
+    version_selector: bool | None,
+    expected: bool,
+) -> None:
+    # Only an active mike plugin can disable the theme's version selector.
+    value = "" if version_selector is None else str(version_selector).lower()
+    if config_format == "yaml":
+        mike = (
+            "  mike: {}"
+            if not value
+            else f"  mike:\n    version_selector: {value}"
+        )
+        if enabled is not None:
+            mike += f"\n    enabled: {str(enabled).lower()}"
+        config = _make_yml_project(
+            tmp_path,
+            yml_extra=(
+                f"extra:\n  version:\n    provider: mike\nplugins:\n{mike}"
+            ),
+        )
+    else:
+        option = "" if not value else f"\nversion_selector = {value}"
+        if enabled is not None:
+            option += f"\nenabled = {str(enabled).lower()}"
+        config = _make_toml_project(
+            tmp_path,
+            toml_extra=(
+                '[project.extra.version]\nprovider = "mike"\n'
+                f"[project.plugins.mike]{option}"
+            ),
+        )
+
+    _build(config)
+
+    html = (tmp_path / "site" / "index.html").read_text(encoding="utf-8")
+    match = re.search(
+        r'<script id="__config" type="application/json">(.*?)</script>', html
+    )
+    assert match is not None
+    settings = json.loads(match.group(1))
+    expected_version = {"provider": "mike"} if expected else None
+    assert settings["version"] == expected_version
+
+
 def test_navigation_title_precedes_metadata_and_heading(tmp_path: Path) -> None:
     """Configured titles have the same highest precedence as in MkDocs."""
     config = _make_yml_project(

python/tests/unit/test_config.py

@@ -588,8 +588,24 @@ class TestPluginShimming:
             "redirect_template": None,
             "deploy_prefix": "",
             "canonical_version": None,
+            "version_selector": True,
         }
 
+    def test_disabled_mike_does_not_adjust_versioned_site_url(
+        self, monkeypatch: pytest.MonkeyPatch, tmp_path: Path
+    ) -> None:
+        # A disabled plugin must stay inactive even during a mike deployment.
+        monkeypatch.setenv("MIKE_DOCS_VERSION", "0.3")
+
+        config = self._parse_yaml(
+            tmp_path,
+            site_url="https://example.com/docs/",
+            plugins={"mike": {"enabled": False, "version_selector": False}},
+        )
+
+        assert config["site_url"] == "https://example.com/docs/"
+        assert "mike" not in config["plugins"]
+
     def test_glightbox_adds_extension_and_forwards_config(
         self, tmp_path: Path
     ) -> None:

python/tests/unit/test_plugin_config.py

@@ -181,6 +181,7 @@ def test_normalizes_mike_defaults() -> None:
         "redirect_template": None,
         "deploy_prefix": "",
         "canonical_version": None,
+        "version_selector": True,
     }