Only test the files impacted by changes in the diff (#12644)

* Base test

* More test

* Fix mistake

* Add a docstring change

* Add doc ignore

* Add changes

* Add recursive dep search

* Add recursive dep search

* save

* Finalize test mapping

* Fix bug

* Print prettier

* Ignore comments and empty lines

* Make script runnable from anywhere

* Need dev install

* Like that

* Adapt

* Add as artifact

* Try on torch tests

* Fix yaml error

* Install GitPython

* Apply everywhere

* Be more defensive

* Revert to all tests if something is wrong

* Install GitPython

* Test if there are tests before launching.

* Fixes

* Fixes

* Fixes

* Fixes

* Bash syntax is horrible

* Be less stupid

* Try differently

* Typo

* Typo

* Typo

* Style

* Better name

* Escape quotes

* Ignore black unhelpful re-formatting

* Not a docstring

* Deal with inits in dependency map

* Run all tests once PR is merged.

* Add last job

* Apply suggestions from code review

Co-authored-by: Stas Bekman <stas00@users.noreply.github.com>

* Stronger dependencies gather

* Ignore empty lines too!

* Clean up

* Fix quality

Co-authored-by: Stas Bekman <stas00@users.noreply.github.com>

utils/style_doc.py

@@ -489,12 +489,14 @@ def style_file_docstrings(code_file, max_len=119, check_only=False):
     """Style all docstrings in `code_file` to `max_len`."""
     with open(code_file, "r", encoding="utf-8", newline="\n") as f:
         code = f.read()
-    splits = code.split('"""')
+    # fmt: off
+    splits = code.split('\"\"\"')
     splits = [
         (s if i % 2 == 0 or _re_doc_ignore.search(splits[i - 1]) is not None else style_docstring(s, max_len=max_len))
         for i, s in enumerate(splits)
     ]
-    clean_code = '"""'.join(splits)
+    clean_code = '\"\"\"'.join(splits)
+    # fmt: on
 
     diff = clean_code != code
     if not check_only and diff: