Enable pyink on tests, fix VSCode pyink config.

Turns on checking pyink formatting for test files.

Also disables a bad Python version for pyink.
Black and Pyink do not support python 3.12.5, but uvx automatically
selects this version occasionally, which breaks autoformatting in
VSCode.

.github/workflows/unittests.yml

@@ -42,7 +42,7 @@ jobs:
 
     # Check formatting
     - name: Check pyink formatting
-      run: uv run pyink treescope --check
+      run: uv run pyink treescope tests --check
 
     - name: Run pylint
       run: uv run pylint treescope

.vscode/settings.json

@@ -24,6 +24,6 @@
         "editor.detectIndentation": false,
         "editor.defaultFormatter": "ms-python.black-formatter",
     },
-    "black-formatter.path": ["uvx", "pyink"],
+    "black-formatter.path": ["uvx", "--python=>=3.9,!=3.12.5", "pyink"],
     "pylint.enabled": true,
 }

tests/fixtures/treescope_examples_fixture.py

@@ -206,6 +206,7 @@ class ObjectWithCustomHandlerThatThrowsDeferred:
 
   def __treescope_repr__(self, path, subtree_renderer):
     del path, subtree_renderer
+
     def _internal_main_thunk(layout_decision):
       del layout_decision
       raise RuntimeError("Simulated deferred treescope_repr failure!")

tests/representation_test.py

@@ -156,7 +156,9 @@ class RepresentationPartsTest(parameterized.TestCase):
           expected_text_roundtrip_collapsed='some text with characters < > &',
           expected_text_roundtrip_expanded='some text with characters < > &',
           expected_html='some text with characters &lt; &gt; &amp;',
-          expected_html_at_beginning='some text with characters &lt; &gt; &amp;',
+          expected_html_at_beginning=(
+              'some text with characters &lt; &gt; &amp;'
+          ),
       ),
       dict(
           testcase_name='siblings',

treescope/_internal/html_encapsulation.py

@@ -356,9 +356,9 @@ def encapsulate_streaming_html(
     stream = io.StringIO()
 
   if stealable:
-    stealer_content = _prep_html_js_and_strip_comments(STEALER_TEMPLATE).replace(
-        "{__REPLACE_ME_WITH_CONTAINER_ID_CLASS__}", unique_id_class
-    )
+    stealer_content = _prep_html_js_and_strip_comments(
+        STEALER_TEMPLATE
+    ).replace("{__REPLACE_ME_WITH_CONTAINER_ID_CLASS__}", unique_id_class)
     yield HTMLOutputSegment(
         html_src=stealer_content,
         segment_type=SegmentType.FINAL_OUTPUT_STEALER,