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import numpy as np
from numpy.testing import assert_warns
from ..exporter import Exporter
from ..renderers import FakeRenderer, FullFakeRenderer
from . import plt
def fake_renderer_output(fig, Renderer):
renderer = Renderer()
exporter = Exporter(renderer)
exporter.run(fig)
return renderer.output
def _assert_output_equal(text1, text2):
for line1, line2 in zip(text1.strip().split(), text2.strip().split()):
assert line1 == line2
def test_lines():
fig, ax = plt.subplots()
ax.plot(range(20), '-k')
_assert_output_equal(fake_renderer_output(fig, FakeRenderer),
"""
opening figure
opening axes
draw path with 20 vertices
closing axes
closing figure
""")
_assert_output_equal(fake_renderer_output(fig, FullFakeRenderer),
"""
opening figure
opening axes
draw line with 20 points
closing axes
closing figure
""")
def test_markers():
fig, ax = plt.subplots()
ax.plot(range(2), 'ok')
_assert_output_equal(fake_renderer_output(fig, FakeRenderer),
"""
opening figure
opening axes
draw path with 25 vertices
draw path with 25 vertices
closing axes
closing figure
""")
_assert_output_equal(fake_renderer_output(fig, FullFakeRenderer),
"""
opening figure
opening axes
draw 2 markers
closing axes
closing figure
""")
def test_path_collection():
fig, ax = plt.subplots()
ax.scatter(range(3), range(3))
_assert_output_equal(fake_renderer_output(fig, FakeRenderer),
"""
opening figure
opening axes
draw path with 25 vertices
draw path with 25 vertices
draw path with 25 vertices
closing axes
closing figure
""")
_assert_output_equal(fake_renderer_output(fig, FullFakeRenderer),
"""
opening figure
opening axes
draw path collection with 3 offsets
closing axes
closing figure
""")
def test_text():
fig, ax = plt.subplots()
ax.set_xlabel("my x label")
ax.set_ylabel("my y label")
ax.set_title("my title")
ax.text(0.5, 0.5, "my text")
_assert_output_equal(fake_renderer_output(fig, FakeRenderer),
"""
opening figure
opening axes
draw text 'my text' None
draw text 'my x label' xlabel
draw text 'my y label' ylabel
draw text 'my title' title
closing axes
closing figure
""")
def test_path():
fig, ax = plt.subplots()
ax.add_patch(plt.Circle((0, 0), 1))
ax.add_patch(plt.Rectangle((0, 0), 1, 2))
_assert_output_equal(fake_renderer_output(fig, FakeRenderer),
"""
opening figure
opening axes
draw path with 25 vertices
draw path with 4 vertices
closing axes
closing figure
""")
def test_Figure():
""" if the fig is not associated with a canvas, FakeRenderer shall
not fail. """
fig = plt.Figure()
ax = fig.add_subplot(111)
ax.add_patch(plt.Circle((0, 0), 1))
ax.add_patch(plt.Rectangle((0, 0), 1, 2))
_assert_output_equal(fake_renderer_output(fig, FakeRenderer),
"""
opening figure
opening axes
draw path with 25 vertices
draw path with 4 vertices
closing axes
closing figure
""")
def test_multiaxes():
fig, ax = plt.subplots(2)
ax[0].plot(range(4))
ax[1].plot(range(10))
_assert_output_equal(fake_renderer_output(fig, FakeRenderer),
"""
opening figure
opening axes
draw path with 4 vertices
closing axes
opening axes
draw path with 10 vertices
closing axes
closing figure
""")
def test_image():
np.random.seed(0) # image size depends on the seed
fig, ax = plt.subplots()
ax.imshow(np.random.random((10, 10)),
cmap=plt.cm.jet, interpolation='nearest')
_assert_output_equal(fake_renderer_output(fig, FakeRenderer),
"""
opening figure
opening axes
draw image of size 2848
closing axes
closing figure
""")
def test_legend():
fig, ax = plt.subplots()
ax.plot([1, 2, 3], label='label')
ax.legend().set_visible(False)
_assert_output_equal(fake_renderer_output(fig, FakeRenderer),
"""
opening figure
opening axes
draw path with 3 vertices
opening legend
closing legend
closing axes
closing figure
""")
def test_legend_dots():
fig, ax = plt.subplots()
ax.plot([1, 2, 3], label='label')
ax.plot([2, 2, 2], 'o', label='dots')
ax.legend().set_visible(True)
_assert_output_equal(fake_renderer_output(fig, FullFakeRenderer),
"""
opening figure
opening axes
draw line with 3 points
draw 3 markers
opening legend
draw line with 2 points
draw text 'label' None
draw 2 markers
draw text 'dots' None
draw path with 5 vertices
closing legend
closing axes
closing figure
""")
def test_blended():
fig, ax = plt.subplots()
ax.axvline(0)
assert_warns(UserWarning, fake_renderer_output, fig, FakeRenderer)
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