Fixed #22712 -- Avoided name shadowing of "all" in django.contrib.staticfiles.finders.

Co-authored-by: Natalia <124304+nessita@users.noreply.github.com>

5 files changed, 155 insertions, 17 deletions

diff --git a/AUTHORS b/AUTHORS
index bd86da5b57..ef5054fd11 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -82,6 +82,7 @@ answer newbie questions, and generally made Django that much better:
     Andreas Mock <andreas.mock@web.de>
     Andreas Pelme <andreas@pelme.se>
     Andrés Torres Marroquín <andres.torres.marroquin@gmail.com>
+    Andreu Vallbona Plazas <avallbona@gmail.com>
     Andrew Brehaut <https://brehaut.net/blog>
     Andrew Clark <amclark7@gmail.com>
     Andrew Durdin <adurdin@gmail.com>
diff --git a/django/contrib/staticfiles/finders.py b/django/contrib/staticfiles/finders.py
index 112a81d279..aca98b2b49 100644
--- a/django/contrib/staticfiles/finders.py
+++ b/django/contrib/staticfiles/finders.py
@@ -1,5 +1,6 @@
 import functools
 import os
+import warnings
 
 from django.apps import apps
 from django.conf import settings
@@ -8,6 +9,7 @@ from django.core.checks import Error, Warning
 from django.core.exceptions import ImproperlyConfigured
 from django.core.files.storage import FileSystemStorage, Storage, default_storage
 from django.utils._os import safe_join
+from django.utils.deprecation import RemovedInDjango60Warning
 from django.utils.functional import LazyObject, empty
 from django.utils.module_loading import import_string
 
@@ -15,6 +17,32 @@ from django.utils.module_loading import import_string
 searched_locations = []
 
 
+# RemovedInDjango60Warning: When the deprecation ends, remove completely.
+def _check_deprecated_find_param(class_name="", find_all=False, **kwargs):
+    method_name = "find" if not class_name else f"{class_name}.find"
+    if "all" in kwargs:
+        legacy_all = kwargs.pop("all")
+        msg = (
+            "Passing the `all` argument to find() is deprecated. Use `find_all` "
+            "instead."
+        )
+        warnings.warn(msg, RemovedInDjango60Warning, stacklevel=2)
+
+        # If both `find_all` and `all` were given, raise TypeError.
+        if find_all is not False:
+            raise TypeError(
+                f"{method_name}() got multiple values for argument 'find_all'"
+            )
+
+        find_all = legacy_all
+
+    if kwargs:  # any remaining kwargs must be a TypeError
+        first = list(kwargs.keys()).pop()
+        raise TypeError(f"{method_name}() got an unexpected keyword argument '{first}'")
+
+    return find_all
+
+
 class BaseFinder:
     """
     A base file finder to be used for custom staticfiles finder classes.
@@ -26,12 +54,20 @@ class BaseFinder:
             "configured correctly."
         )
 
-    def find(self, path, all=False):
+    # RemovedInDjango60Warning: When the deprecation ends, remove completely.
+    def _check_deprecated_find_param(self, **kwargs):
+        return _check_deprecated_find_param(
+            class_name=self.__class__.__qualname__, **kwargs
+        )
+
+    # RemovedInDjango60Warning: When the deprecation ends, replace with:
+    # def find(self, path, find_all=False):
+    def find(self, path, find_all=False, **kwargs):
         """
         Given a relative file path, find an absolute file path.
 
-        If the ``all`` parameter is False (default) return only the first found
-        file path; if True, return a list of all found files paths.
+        If the ``find_all`` parameter is False (default) return only the first
+        found file path; if True, return a list of all found files paths.
         """
         raise NotImplementedError(
             "subclasses of BaseFinder must provide a find() method"
@@ -113,17 +149,22 @@ class FileSystemFinder(BaseFinder):
                 )
         return errors
 
-    def find(self, path, all=False):
+    # RemovedInDjango60Warning: When the deprecation ends, replace with:
+    # def find(self, path, find_all=False):
+    def find(self, path, find_all=False, **kwargs):
         """
         Look for files in the extra locations as defined in STATICFILES_DIRS.
         """
+        # RemovedInDjango60Warning.
+        if kwargs:
+            find_all = self._check_deprecated_find_param(find_all=find_all, **kwargs)
         matches = []
         for prefix, root in self.locations:
             if root not in searched_locations:
                 searched_locations.append(root)
             matched_path = self.find_location(root, path, prefix)
             if matched_path:
-                if not all:
+                if not find_all:
                     return matched_path
                 matches.append(matched_path)
         return matches
@@ -191,10 +232,15 @@ class AppDirectoriesFinder(BaseFinder):
                 for path in utils.get_files(storage, ignore_patterns):
                     yield path, storage
 
-    def find(self, path, all=False):
+    # RemovedInDjango60Warning: When the deprecation ends, replace with:
+    # def find(self, path, find_all=False):
+    def find(self, path, find_all=False, **kwargs):
         """
         Look for files in the app directories.
         """
+        # RemovedInDjango60Warning.
+        if kwargs:
+            find_all = self._check_deprecated_find_param(find_all=find_all, **kwargs)
         matches = []
         for app in self.apps:
             app_location = self.storages[app].location
@@ -202,7 +248,7 @@ class AppDirectoriesFinder(BaseFinder):
                 searched_locations.append(app_location)
             match = self.find_in_app(app, path)
             if match:
-                if not all:
+                if not find_all:
                     return match
                 matches.append(match)
         return matches
@@ -241,10 +287,15 @@ class BaseStorageFinder(BaseFinder):
             self.storage = self.storage()
         super().__init__(*args, **kwargs)
 
-    def find(self, path, all=False):
+    # RemovedInDjango60Warning: When the deprecation ends, replace with:
+    # def find(self, path, find_all=False):
+    def find(self, path, find_all=False, **kwargs):
         """
         Look for files in the default file storage, if it's local.
         """
+        # RemovedInDjango60Warning.
+        if kwargs:
+            find_all = self._check_deprecated_find_param(find_all=find_all, **kwargs)
         try:
             self.storage.path("")
         except NotImplementedError:
@@ -254,7 +305,7 @@ class BaseStorageFinder(BaseFinder):
                 searched_locations.append(self.storage.location)
             if self.storage.exists(path):
                 match = self.storage.path(path)
-                if all:
+                if find_all:
                     match = [match]
                 return match
         return []
@@ -285,18 +336,23 @@ class DefaultStorageFinder(BaseStorageFinder):
             )
 
 
-def find(path, all=False):
+# RemovedInDjango60Warning: When the deprecation ends, replace with:
+# def find(path, find_all=False):
+def find(path, find_all=False, **kwargs):
     """
     Find a static file with the given path using all enabled finders.
 
-    If ``all`` is ``False`` (default), return the first matching
+    If ``find_all`` is ``False`` (default), return the first matching
     absolute path (or ``None`` if no match). Otherwise return a list.
     """
+    # RemovedInDjango60Warning.
+    if kwargs:
+        find_all = _check_deprecated_find_param(find_all=find_all, **kwargs)
     searched_locations[:] = []
     matches = []
     for finder in get_finders():
-        result = finder.find(path, all=all)
-        if not all and result:
+        result = finder.find(path, find_all=find_all)
+        if not find_all and result:
             return result
         if not isinstance(result, (list, tuple)):
             result = [result]
@@ -304,7 +360,7 @@ def find(path, all=False):
     if matches:
         return matches
     # No match.
-    return [] if all else None
+    return [] if find_all else None
 
 
 def get_finders():
diff --git a/django/contrib/staticfiles/management/commands/findstatic.py b/django/contrib/staticfiles/management/commands/findstatic.py
index 97413a64af..1caebf8fa9 100644
--- a/django/contrib/staticfiles/management/commands/findstatic.py
+++ b/django/contrib/staticfiles/management/commands/findstatic.py
@@ -19,7 +19,7 @@ class Command(LabelCommand):
 
     def handle_label(self, path, **options):
         verbosity = options["verbosity"]
-        result = finders.find(path, all=options["all"])
+        result = finders.find(path, find_all=options["all"])
         if verbosity >= 2:
             searched_locations = (
                 "\nLooking in the following locations:\n  %s"
diff --git a/docs/releases/5.2.txt b/docs/releases/5.2.txt
index 8b77ecc482..bdc5349368 100644
--- a/docs/releases/5.2.txt
+++ b/docs/releases/5.2.txt
@@ -279,4 +279,5 @@ Features deprecated in 5.2
 Miscellaneous
 -------------
 
-* ...
+* The ``all`` argument for the ``django.contrib.staticfiles.finders.find()``
+  function is deprecated in favor of the ``find_all`` argument.
diff --git a/tests/staticfiles_tests/test_finders.py b/tests/staticfiles_tests/test_finders.py
index 9f2509d533..28870e6fbe 100644
--- a/tests/staticfiles_tests/test_finders.py
+++ b/tests/staticfiles_tests/test_finders.py
@@ -4,10 +4,15 @@ from django.conf import settings
 from django.contrib.staticfiles import finders, storage
 from django.core.exceptions import ImproperlyConfigured
 from django.test import SimpleTestCase, override_settings
+from django.utils.deprecation import RemovedInDjango60Warning
 
 from .cases import StaticFilesTestCase
 from .settings import TEST_ROOT
 
+DEPRECATION_MSG = (
+    "Passing the `all` argument to find() is deprecated. Use `find_all` instead."
+)
+
 
 class TestFinders:
     """
@@ -25,11 +30,49 @@ class TestFinders:
 
     def test_find_all(self):
         src, dst = self.find_all
-        found = self.finder.find(src, all=True)
+        found = self.finder.find(src, find_all=True)
         found = [os.path.normcase(f) for f in found]
         dst = [os.path.normcase(d) for d in dst]
         self.assertEqual(found, dst)
 
+    def test_find_all_deprecated_param(self):
+        src, dst = self.find_all
+        with self.assertWarnsMessage(RemovedInDjango60Warning, DEPRECATION_MSG):
+            found = self.finder.find(src, all=True)
+            found = [os.path.normcase(f) for f in found]
+            dst = [os.path.normcase(d) for d in dst]
+            self.assertEqual(found, dst)
+
+    def test_find_all_conflicting_params(self):
+        src, dst = self.find_all
+        msg = (
+            f"{self.finder.__class__.__qualname__}.find() got multiple values for "
+            "argument 'find_all'"
+        )
+        with (
+            self.assertWarnsMessage(RemovedInDjango60Warning, DEPRECATION_MSG),
+            self.assertRaisesMessage(TypeError, msg),
+        ):
+            self.finder.find(src, find_all=True, all=True)
+
+    def test_find_all_unexpected_params(self):
+        src, dst = self.find_all
+        msg = (
+            f"{self.finder.__class__.__qualname__}.find() got an unexpected keyword "
+            "argument 'wrong'"
+        )
+        with (
+            self.assertWarnsMessage(RemovedInDjango60Warning, DEPRECATION_MSG),
+            self.assertRaisesMessage(TypeError, msg),
+        ):
+            self.finder.find(src, all=True, wrong=1)
+
+        with self.assertRaisesMessage(TypeError, msg):
+            self.finder.find(src, find_all=True, wrong=1)
+
+        with self.assertRaisesMessage(TypeError, msg):
+            self.finder.find(src, wrong=1)
+
 
 class TestFileSystemFinder(TestFinders, StaticFilesTestCase):
     """
@@ -114,6 +157,43 @@ class TestMiscFinder(SimpleTestCase):
             [os.path.join(TEST_ROOT, "project", "documents")],
         )
 
+    def test_searched_locations_find_all(self):
+        finders.find("spam", find_all=True)
+        self.assertEqual(
+            finders.searched_locations,
+            [os.path.join(TEST_ROOT, "project", "documents")],
+        )
+
+    def test_searched_locations_deprecated_all(self):
+        with self.assertWarnsMessage(RemovedInDjango60Warning, DEPRECATION_MSG):
+            finders.find("spam", all=True)
+            self.assertEqual(
+                finders.searched_locations,
+                [os.path.join(TEST_ROOT, "project", "documents")],
+            )
+
+    def test_searched_locations_conflicting_params(self):
+        msg = "find() got multiple values for argument 'find_all'"
+        with (
+            self.assertWarnsMessage(RemovedInDjango60Warning, DEPRECATION_MSG),
+            self.assertRaisesMessage(TypeError, msg),
+        ):
+            finders.find("spam", find_all=True, all=True)
+
+    def test_searched_locations_unexpected_params(self):
+        msg = "find() got an unexpected keyword argument 'wrong'"
+        with (
+            self.assertWarnsMessage(RemovedInDjango60Warning, DEPRECATION_MSG),
+            self.assertRaisesMessage(TypeError, msg),
+        ):
+            finders.find("spam", all=True, wrong=1)
+
+        with self.assertRaisesMessage(TypeError, msg):
+            finders.find("spam", find_all=True, wrong=1)
+
+        with self.assertRaisesMessage(TypeError, msg):
+            finders.find("spam", wrong=1)
+
     @override_settings(MEDIA_ROOT="")
     def test_location_empty(self):
         msg = (