Fix interpolation in filtered log calls (#478)

Fixes #476

Author: hynek

CHANGELOG.md

@@ -22,6 +22,12 @@ This prevents crashes if something different than a string is passed for the *ev
   [#475](https://github.com/hynek/structlog/pull/475)
 
 
+### Fixed
+
+- String interpolation doesn't cause crashes in filtered log call anymore.
+  [#478](https://github.com/hynek/structlog/pull/478)
+
+
 ## [22.2.0](https://github.com/hynek/structlog/compare/22.1.0...22.2.0) - 2022-11-19
 
 ### Deprecated

src/structlog/_log_levels.py

@@ -71,11 +71,11 @@ def add_log_level(
     return event_dict
 
 
-def _nop(self: Any, event: str, **kw: Any) -> Any:
+def _nop(self: Any, event: str, *args: Any, **kw: Any) -> Any:
     return None
 
 
-async def _anop(self: Any, event: str, **kw: Any) -> Any:
+async def _anop(self: Any, event: str, *args: Any, **kw: Any) -> Any:
     return None
 
 

tests/test_log_levels.py

@@ -61,6 +61,22 @@ async def test_async_one_below(self, bl, cl):
 
         assert [] == cl.calls
 
+    def test_filtered_interp(self, bl, cl):
+        """
+        Passing interpolation args works if the log entry is filtered out.
+        """
+        bl.debug("hello %s!", "world")
+
+        assert [] == cl.calls
+
+    async def test_async_filtered_interp(self, bl, cl):
+        """
+        Passing interpolation args works if the log entry is filtered out.
+        """
+        await bl.adebug("hello %s!", "world")
+
+        assert [] == cl.calls
+
     def test_no_args(self, bl, cl):
         """
         If no args are passed, don't attempt intepolation.