code: def test_truncnorm_all_values_inside_boundaries():
      mean = 0
      std = 0.01
      layer = nn.Dense(in_units=1, units=1000)
      layer.initialize(init=initializer.TruncNorm(mean, std))
      assert (layer.weight.data() <= 2 * std).asnumpy().all()
      assert (layer.weight.data() >= -2 * std).asnumpy().all()
  
imports: import pytest
  from gluonnlp import initializer
  import mxnet
  from mxnet.gluon import nn
label_desc: Use image node_id 2 for calling a global function with example usage: test_truncnorm_all_values_inside_boundaries() without return types