Merge pull request #7608 from uranusjr/global-cleanup

Delay TempDirectory.delete resolution to cleanup

src/pip/_internal/utils/temp_dir.py

@@ -107,13 +107,10 @@ class TempDirectory(object):
     ):
         super(TempDirectory, self).__init__()
 
-        if path is None and delete is None:
+        # If we were given an explicit directory, resolve delete option now.
-            # If we were not given an explicit directory, and we were not given
+        # Otherwise we wait until cleanup and see what tempdir_registry says.
-            # an explicit delete option, then we'll default to deleting unless
+        if path is not None and delete is None:
-            # the tempdir_registry says otherwise.
+            delete = False
-            delete = True
-            if _tempdir_registry:
-                delete = _tempdir_registry.get_delete(kind)
 
         if path is None:
             path = self._create(kind)
@@ -145,7 +142,14 @@ class TempDirectory(object):
 
     def __exit__(self, exc, value, tb):
         # type: (Any, Any, Any) -> None
-        if self.delete:
+        if self.delete is not None:
+            delete = self.delete
+        elif _tempdir_registry:
+            delete = _tempdir_registry.get_delete(self.kind)
+        else:
+            delete = True
+
+        if delete:
             self.cleanup()
 
     def _create(self, kind):

tests/unit/test_utils_temp_dir.py

@@ -234,3 +234,17 @@ def test_tempdir_registry(kind, delete, exists):
             path = d.path
             assert os.path.exists(path)
         assert os.path.exists(path) == exists
+
+
+@pytest.mark.parametrize("should_delete", [True, False])
+def test_tempdir_registry_lazy(should_delete):
+    """
+    Test the registry entry can be updated after a temp dir is created,
+    to change whether a kind should be deleted or not.
+    """
+    with tempdir_registry() as registry:
+        with TempDirectory(delete=None, kind="test-for-lazy") as d:
+            path = d.path
+            registry.set_delete("test-for-lazy", should_delete)
+            assert os.path.exists(path)
+        assert os.path.exists(path) == (not should_delete)