code: def test_a_eq_0_x_gt_0(self):
      assert sc.gammainc(0, 1) == 1
  
imports: import cupy
  import pytest
  import cupyx.scipy.special
  from cupy.testing import assert_allclose, assert_array_equal
label_desc: Use image node_id 2 for calling the TestGammainc obj's underlying member method code with example usage: obj.test_a_eq_0_x_gt_0() without return types