code: def test_matscalar(self):
      b1 = np.matrix(np.ones((3, 3), dtype=complex))
      assert_equal(b1 * 1.0, b1)
  
imports: import numpy
  from numpy.testing import assert_equal
label_desc: Use image node_id 1 for calling the TestDot obj's underlying member method code with example usage: obj.test_matscalar() without return types