Fix: Add validation for rate_hz and use_filter parameters in Smoothness class

Author: sanketsabharwal

pyeyesweb/mid_level/smoothness.py

@@ -62,7 +62,19 @@ class Smoothness:
     """
 
     def __init__(self, rate_hz=50.0, use_filter=True):
-        self.rate_hz = rate_hz
+        # Validate rate_hz
+        if not isinstance(rate_hz, (int, float)):
+            raise TypeError(f"rate_hz must be a number, got {type(rate_hz).__name__}")
+        if rate_hz <= 0:
+            raise ValueError(f"rate_hz must be positive, got {rate_hz}")
+        if rate_hz > 100000:  # 100 kHz is a reasonable upper limit
+            raise ValueError(f"rate_hz too high ({rate_hz} Hz), maximum is 100,000 Hz")
+
+        # Validate use_filter
+        if not isinstance(use_filter, bool):
+            raise TypeError(f"use_filter must be boolean, got {type(use_filter).__name__}")
+
+        self.rate_hz = float(rate_hz)  # Ensure it's a float
         self.use_filter = use_filter
 
     def _filter_signal(self, signal):