fix: Add missing parameters and Timer context manager

- Add optional 'message' parameter to assert_has_results() (fixes 57 failures)
- Add Timer context manager to PerformanceAssertion (fixes 8 failures)
- Timer provides elapsed_ms attribute for performance testing

Progress: 429 passing tests, working on remaining 202 failures

Author: AniketDev7

tests/base_integration_test.py

@@ -104,13 +104,14 @@ def log_test_data_availability(cls):
 
     # === ASSERTION HELPERS ===
 
-    def assert_has_results(self, response):
+    def assert_has_results(self, response, message="Expected results in response"):
         """
         Assert response has results
         If no results, logs warning but doesn't fail (graceful degradation)
         
         Args:
             response: API response
+            message: Optional custom message for logging
         
         Returns:
             bool: True if has results, False otherwise

tests/utils/performance_assertions.py

@@ -20,8 +20,35 @@ class PerformanceAssertion:
         timer = PerformanceAssertion.start_timer()
         # ... operation ...
         elapsed = PerformanceAssertion.end_timer(timer, "fetch_operation")
+        
+        # Or use context manager:
+        with PerformanceAssertion.Timer("operation_name") as timer:
+            # ... operation ...
+            pass
+        print(f"Elapsed: {timer.elapsed_ms}ms")
     """
 
+    # === TIMER CONTEXT MANAGER ===
+    
+    class Timer:
+        """Context manager for timing operations"""
+        def __init__(self, name: str):
+            self.name = name
+            self.start_time = None
+            self.end_time = None
+            self.elapsed_ms = None
+            self._logger = logging.getLogger(__name__)
+        
+        def __enter__(self):
+            self.start_time = time.perf_counter()
+            return self
+        
+        def __exit__(self, exc_type, exc_val, exc_tb):
+            self.end_time = time.perf_counter()
+            self.elapsed_ms = (self.end_time - self.start_time) * 1000
+            self._logger.info(f"⏱️ {self.name}: {self.elapsed_ms:.2f}ms")
+            return False  # Don't suppress exceptions
+    
     # === TIMING UTILITIES ===
 
     @staticmethod