Add misc missing test coverage

4 files changed, 5 insertions, 11 deletions

diff --git a/requests_cache/_utils.py b/requests_cache/_utils.py
index a57f4ea..c5b5a28 100644
--- a/requests_cache/_utils.py
+++ b/requests_cache/_utils.py
@@ -45,9 +45,6 @@ def get_placeholder_class(original_exception: Exception = None):
         def __init__(self, *args, **kwargs):
             _log_error()
 
-        def __getattr__(self, *args, **kwargs):
-            _log_error()
-
         def dumps(self, *args, **kwargs):
             _log_error()
 
diff --git a/requests_cache/backends/sqlite.py b/requests_cache/backends/sqlite.py
index 43a0485..eb9b712 100644
--- a/requests_cache/backends/sqlite.py
+++ b/requests_cache/backends/sqlite.py
@@ -13,7 +13,7 @@ from os import unlink
 from os.path import isfile
 from pathlib import Path
 from tempfile import gettempdir
-from typing import Collection, Iterable, Iterator, List, Tuple, Type, Union
+from typing import Collection, Iterator, List, Tuple, Type, Union
 
 from platformdirs import user_cache_dir
 
@@ -319,9 +319,7 @@ class SQLitePickleDict(SQLiteDict):
 
 
 def _format_sequence(values: Collection) -> Tuple[str, List]:
-    """Get SQL parameter marks for a sequence-based query, and ensure value is a sequence"""
-    if not isinstance(values, Iterable):
-        values = [values]
+    """Get SQL parameter marks for a sequence-based query"""
     return ','.join(['?'] * len(values)), list(values)
 
 
diff --git a/requests_cache/cache_keys.py b/requests_cache/cache_keys.py
index 71606fe..d551979 100644
--- a/requests_cache/cache_keys.py
+++ b/requests_cache/cache_keys.py
@@ -159,8 +159,7 @@ def normalize_json_body(
     original_body: Union[str, bytes], ignored_parameters: ParamList
 ) -> Union[str, bytes]:
     """Normalize and filter a request body with serialized JSON data"""
-
-    if len(original_body) == 0 or len(original_body) > MAX_NORM_BODY_SIZE:
+    if len(original_body) <= 2 or len(original_body) > MAX_NORM_BODY_SIZE:
         return original_body
 
     try:
@@ -169,7 +168,7 @@ def normalize_json_body(
         return json.dumps(body)
     # If it's invalid JSON, then don't mess with it
     except (AttributeError, TypeError, ValueError):
-        logger.debug('Invalid JSON body:', exc_info=True)
+        logger.debug('Invalid JSON body')
         return original_body
 
 
diff --git a/requests_cache/models/raw_response.py b/requests_cache/models/raw_response.py
index 27f871f..9c01b88 100644
--- a/requests_cache/models/raw_response.py
+++ b/requests_cache/models/raw_response.py
@@ -75,7 +75,7 @@ class CachedHTTPResponse(HTTPResponse, RichMixin):
         :py:meth:`urllib3.response.HTTPResponse.read()`
         """
         if 'content-encoding' in self.headers and decode_content is False:
-            logger.warning('read() returns decoded data, even with decode_content=False')
+            logger.warning('read(decode_content=False) is not supported for cached responses')
 
         data = self._fp.read(amt)
         # "close" the file to inform consumers to stop reading from it