enhance test and fix to int casting for special cases

slo-checker/generic/app/main.py

@@ -37,7 +37,7 @@ def aggr_query(values: dict, warmup: int, aggr_func):
     df = pd.DataFrame.from_dict(values)
     df.columns = ['timestamp', 'value']
     filtered = df[df['timestamp'] >= (df['timestamp'][0] + warmup)]
-    filtered['value'] = filtered['value'].astype(int)
+    filtered['value'] = filtered['value'].astype(float).astype(int)
     return filtered['value'].aggregate(aggr_func)
 
 def check_result(result, operator: str, threshold):

slo-checker/generic/resources/test-1-rep-success.json

@@ -260,7 +260,7 @@
                     ],
                     [
                         1.634624989695E9,
-                        "1854284"
+                        "3970.0000000000005"
                     ]
                 ]
             }