def test_matrix_calls_axis(self):
matrix = Matrix()
axis = mock.Mock()
matrix.add_axis(axis)
cases = [mock.Mock()]
matrix.expand(cases)
axis.expand.assert_called_once_with(cases)
def test_matrix_leaves_out_bare_lint_all(self):
matrix = Matrix()
matrix.add_axis(PythonAxis(["2.7", "3.8"]))
cases = [ToxLintCase([])]
expanded = matrix.expand(cases)
self.assertEqual(2, len(expanded))
def test_empty_matrix(self):
cases = [ToxTestCase(mock.Mock(), mock.Mock()), ToxLintCase([])]
original = copy(cases)
matrix = Matrix()
after_cases = matrix.expand(cases)
self.assertEqual(after_cases, original)