code: def test_recent():
      tracker = SQLiteTracker(":memory:")
  
      for i in range(5):
          tracker.insert(i, {"a": i})
  
      df = tracker.recent(normalize=False)
  
      assert df.columns.tolist() == ["created", "parameters", "comment"]
      assert df.index.name == "uuid"
  
      df = tracker.recent(normalize=True)
  
      assert df.columns.tolist() == ["created", "a", "comment"]
      assert df.index.name == "uuid"
  
imports: import json
  from uuid import uuid4
  import time
  import pytest
  from sklearn_evaluation.tracker import SQLiteTracker
  from sklearn_evaluation import tracker
  from sklearn_evaluation import plot
label_desc: Use image node_id 12 for calling a global function with example usage: test_recent() without return types