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>

setup.py

@@ -100,6 +100,7 @@ _deps = [
     "flake8>=3.8.3",
     "flax>=0.3.4",
     "fugashi>=1.0",
+    "GitPython",
     "huggingface-hub==0.0.12",
     "importlib_metadata",
     "ipadic>=1.0.0,<2.0",
@@ -259,7 +260,7 @@ extras["codecarbon"] = deps_list("codecarbon")
 extras["sentencepiece"] = deps_list("sentencepiece", "protobuf")
 extras["testing"] = (
     deps_list(
-        "pytest", "pytest-xdist", "timeout-decorator", "parameterized", "psutil", "datasets", "pytest-timeout", "black", "sacrebleu", "rouge-score", "nltk"
+        "pytest", "pytest-xdist", "timeout-decorator", "parameterized", "psutil", "datasets", "pytest-timeout", "black", "sacrebleu", "rouge-score", "nltk", "GitPython"
     )
     + extras["retrieval"]
     + extras["modelcreation"]