text: """Tests for the NumpyVersion class.
  
  """
  from __future__ import division, absolute_import, print_function
  
  from numpy.testing import assert_, run_module_suite, assert_raises
  from numpy.lib import NumpyVersion
  
  
  def test_main_versions():
      assert_(NumpyVersion('1.8.0') == '1.8.0')
      for ver in ['1.9.0', '2.0.0', '1.8.1']:
          assert_(NumpyVersion('1.8.0') < ver)
  
      for ver in ['1.7.0', '1.7.1', '0.9.9']:
          assert_(NumpyVersion('1.8.0') > ver)
  
  
  def test_version_1_point_10():
      # regression test for gh-2998.
      assert_(NumpyVersion('1.9.0') < '1.10.0')
      assert_(NumpyVersion('1.11.0') < '1.11.1')
      assert_(NumpyVersion('1.11.0') == '1.11.0')
      assert_(NumpyVersion('1.99.11') < '1.99.12')
  
  
  def test_alpha_beta_rc():
      assert_(NumpyVersion('1.8.0rc1') == '1.8.0rc1')
      for ver in ['1.8.0', '1.8.0rc2']:
          assert_(NumpyVersion('1.8.0rc1') < ver)
  
      for ver in ['1.8.0a2', '1.8.0b3', '1.7.2rc4']:
          assert_(NumpyVersion('1.8.0rc1') > ver)
  
      assert_(NumpyVersion('1.8.0b1') > '1.8.0a2')
  
  
  def test_dev_version():
      assert_(NumpyVersion('1.9.0.dev-Unknown') < '1.9.0')
      for ver in ['1.9.0', '1.9.0a1', '1.9.0b2', '1.9.0b2.dev-ffffffff']:
          assert_(NumpyVersion('1.9.0.dev-f16acvda') < ver)
  
      assert_(NumpyVersion('1.9.0.dev-f16acvda') == '1.9.0.dev-11111111')
  
  
  def test_dev_a_b_rc_mixed():
      assert_(NumpyVersion('1.9.0a2.dev-f16acvda') == '1.9.0a2.dev-11111111')
      assert_(NumpyVersion('1.9.0a2.dev-6acvda54') < '1.9.0a2')
  
  
  def test_dev0_version():
      assert_(NumpyVersion('1.9.0.dev0+Unknown') < '1.9.0')
      for ver in ['1.9.0', '1.9.0a1', '1.9.0b2', '1.9.0b2.dev0+ffffffff']:
          assert_(NumpyVersion('1.9.0.dev0+f16acvda') < ver)
  
      assert_(NumpyVersion('1.9.0.dev0+f16acvda') == '1.9.0.dev0+11111111')
  
  
  def test_dev0_a_b_rc_mixed():
      assert_(NumpyVersion('1.9.0a2.dev0+f16acvda') == '1.9.0a2.dev0+11111111')
      assert_(NumpyVersion('1.9.0a2.dev0+6acvda54') < '1.9.0a2')
  
  
  def test_raises():
      for ver in ['1.9', '1,9.0', '1.7.x']:
          assert_raises(ValueError, NumpyVersion, ver)
  
  
  if __name__ == "__main__":
      run_module_suite()
  