class_docstr: Mixin class for scal testing 
class_docstr_tok: ["Mixin","class","for","scal","testing"]
code: def test_simple(self):
      x = arange(3.0, dtype=self.dtype)
      real_x = x * 3.0
      x = self.blas_func(3.0, x)
      assert_array_equal(real_x, x)
  
imports: from numpy import float32, float64, complex64, complex128, arange, array, zeros, shape, transpose, newaxis, common_type, conjugate
  from scipy.linalg import _fblas
  from numpy.testing import assert_array_equal, assert_allclose, assert_array_almost_equal, assert_
  import pytest
label_desc: Use image node_id 1 for calling the BaseScal obj's underlying member method code with example usage: obj.test_simple() without return types