[reafctor] Treat as local plugin

tests/conftest.py

@@ -1,6 +1,8 @@
+import shutil
 from pathlib import Path
 
 import pytest
+from bs4 import BeautifulSoup
 
 pytest_plugins = "sphinx.testing.fixtures"
 collect_ignore = ["roots"]
@@ -9,3 +11,27 @@
 @pytest.fixture(scope="session")
 def rootdir() -> Path:
     return Path(__file__).parent / "roots"
+
+
+@pytest.fixture
+def parsed_built_html(
+    request,
+    make_app,
+    sphinx_test_tempdir: Path,
+    rootdir: Path,
+):
+    marker = request.node.get_closest_marker("sphinx_build_in_tempdir")
+    if marker is None:
+        raise RuntimeError("Mark as `sphinx_build_in_tempdir`")
+    directory_name = marker.args[0]
+
+    srcdir = sphinx_test_tempdir / directory_name
+    if not srcdir.exists():
+        testroot_path = rootdir / f"test-{directory_name}"
+        shutil.copytree(testroot_path, srcdir)
+
+    app = make_app("html", srcdir=srcdir)
+    app.build()
+
+    html = (app.outdir / "index.html").read_text()
+    return BeautifulSoup(html, "html.parser")

tests/test_show_external_link_icon.py

@@ -1,32 +1,4 @@
-import shutil
-from pathlib import Path
-
 import pytest
-from bs4 import BeautifulSoup
-
-
-@pytest.fixture
-def parsed_built_html(
-    request,
-    make_app,
-    sphinx_test_tempdir: Path,
-    rootdir: Path,
-):
-    marker = request.node.get_closest_marker("sphinx_build_in_tempdir")
-    if marker is None:
-        raise RuntimeError("Mark as `sphinx_build_in_tempdir`")
-    directory_name = marker.args[0]
-
-    srcdir = sphinx_test_tempdir / directory_name
-    if not srcdir.exists():
-        testroot_path = rootdir / f"test-{directory_name}"
-        shutil.copytree(testroot_path, srcdir)
-
-    app = make_app("html", srcdir=srcdir)
-    app.build()
-
-    html = (app.outdir / "index.html").read_text()
-    return BeautifulSoup(html, "html.parser")
 
 
 def assert_is_external(reference, expected_url: str) -> None: