code: def test_insert_many():
      tracker = SQLiteTracker(":memory:")
  
      experiments = [
          dict(a=1, b=2),
          dict(a=2, b=3),
          dict(a=3, b=4),
      ]
  
      assert not len(tracker)
  
      tracker.insert_many(experiments)
  
      assert len(tracker) == 3
  
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 28 for calling a global function with example usage: test_insert_many() without return types