def test_to_metric():
uvf = UVFlag(test_f_file)
uvf.to_flag()
nt.assert_true(hasattr(uvf, 'flag_array'))
nt.assert_false(hasattr(uvf, 'metric_array'))
nt.assert_true(uvf.mode == 'flag')
uvf.to_metric()
nt.assert_true(hasattr(uvf, 'metric_array'))
nt.assert_false(hasattr(uvf, 'flag_array'))
nt.assert_true(uvf.mode == 'metric')
nt.assert_true('Converted to mode "metric"' in uvf.history)
def test_metric_to_metric():
uvf = UVFlag(test_f_file)
uvf2 = uvf.copy()
uvf.to_metric()
nt.assert_equal(uvf, uvf2)
