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# -*- coding: utf-8 -*-
# Licensed under a 3-clause BSD style license - see LICENSE.rst
from __future__ import (absolute_import, division, print_function,
unicode_literals)
import io
try:
import matplotlib.pyplot as plt
except ImportError:
HAS_PLT = False
else:
HAS_PLT = True
from ...tests.helper import pytest
from ... import units as u
from ..units import quantity_support
@pytest.mark.skipif('not HAS_PLT')
def test_units():
plt.figure()
with quantity_support():
buff = io.BytesIO()
plt.plot([1, 2, 3] * u.m, [3, 4, 5] * u.kg)
plt.plot([105, 210, 315] * u.cm, [3050, 3025, 3010] * u.g)
# Also test fill_between, which requires actual conversion to ndarray
# with numpy >=1.10 (#4654).
plt.fill_between([1, 3] * u.m, [3, 5] * u.kg, [3050, 3010] * u.g)
plt.savefig(buff, format='svg')
assert plt.gca().xaxis.get_units() == u.m
assert plt.gca().yaxis.get_units() == u.kg
plt.clf()
@pytest.mark.skipif('not HAS_PLT')
def test_incompatible_units():
plt.figure()
with quantity_support():
plt.plot([1, 2, 3] * u.m)
with pytest.raises(u.UnitConversionError):
plt.plot([105, 210, 315] * u.kg)
plt.clf()
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