fix ski KDiscord unittest

tods/tests/sk_interface/detection_algorithm/test_ski_KDiscordODetector.py

@@ -22,11 +22,13 @@ class KDiscordODetectorSKI_TestCase(unittest.TestCase):
         self.n_test = 100
         self.contamination = 0.1
         self.roc_floor = 0.0
+        self.window_size = 5
         self.X_train, self.y_train, self.X_test, self.y_test = generate_data(
             n_train=self.n_train, n_test=self.n_test,
             contamination=self.contamination, random_state=42)
 
-        self.transformer = KDiscordODetectorSKI(contamination=self.contamination)
+        self.transformer = KDiscordODetectorSKI(contamination=self.contamination, window_size=self.window_size)
+        self.y_test = self.y_test[self.window_size-1:]
         self.transformer.fit(self.X_train)
 
     def test_prediction_labels(self):