bpo-45150: Fix testing under FIPS mode (GH-32046)

Author: tiran

Lib/test/test_hashlib.py

@@ -379,6 +379,11 @@ def check(self, name, data, hexdigest, shake=False, **kwargs):
 
     def check_file_digest(self, name, data, hexdigest):
         hexdigest = hexdigest.lower()
+        try:
+            hashlib.new(name)
+        except ValueError:
+            # skip, algorithm is blocked by security policy.
+            return
         digests = [name]
         digests.extend(self.constructors_to_test[name])