def test_it_uses_subprocess_when_env_var_invalid(self, invalid_env_value):
with self.temp_cplex_env_var_value(
invalid_env_value), unittest.mock.patch(
"pyomo.solvers.plugins.solvers.CPLEX.subprocess"
) as mock_subprocess:
mock_subprocess.run.return_value = Mock(stdout='20.0.0')
cplex = MockCPLEX()
assert cplex.version() == (20, 0, 0, 0)
mock_subprocess.run.assert_called_once_with(
[cplex.executable(), '-c', 'quit'],
timeout=1,
stdout=mock_subprocess.PIPE,
stderr=mock_subprocess.STDOUT,
universal_newlines=True)
def test_it_uses_env_var(self):
with self.temp_cplex_env_var_value('20.1.0'):
cplex = MockCPLEX()
assert cplex.version() == (20, 1, 0, 0)