corrscope/tests/test_renderer.py

95 wiersze
2.3 KiB
Python

from unittest.mock import patch
import pytest
from ovgenpy.renderer import RendererConfig, MatplotlibRenderer, LayoutConfig, \
RendererLayout
WIDTH = 640
HEIGHT = 360
def test_config():
with pytest.raises(ValueError):
LayoutConfig(nrows=1, ncols=1)
one_col = LayoutConfig(ncols=1)
assert one_col
one_row = LayoutConfig(nrows=1)
assert one_row
default = LayoutConfig()
assert default.ncols == 1 # Should default to single-column layout
assert default.nrows is None
assert default.orientation == 'h'
def test_renderer():
"""
TODO check image output using:
https://matplotlib.org/devel/testing.html#writing-an-image-comparison-test
https://stackoverflow.com/a/27950953
"[I]mage comparison tests end up bring more trouble than they are worth"
"""
# 2 columns
cfg = RendererConfig(WIDTH, HEIGHT)
lcfg = LayoutConfig(ncols=2)
nplots = 15
r = MatplotlibRenderer(cfg, lcfg, nplots)
# 2 columns, 8 rows
assert r.layout.ncols == 2
assert r.layout.nrows == 8
@pytest.mark.parametrize('lcfg', [
LayoutConfig(ncols=2),
LayoutConfig(nrows=8),
])
def test_layout(lcfg):
nplots = 15
layout = RendererLayout(lcfg, nplots)
assert layout.ncols == 2
assert layout.nrows == 8
# holy shit, passing tuples into a numpy array breaks things spectacularly, and it's
# painfully difficult to stuff tuples into 1D array.
# http://wesmckinney.com/blog/performance-quirk-making-a-1d-object-ndarray-of-tuples/
regions = layout.arrange(lambda row, col: str((row, col)))
assert len(regions) == nplots
assert regions[0] == '(0, 0)'
assert regions[1] == '(0, 1)'
assert regions[2] == '(1, 0)'
m = nplots - 1
assert regions[m] == str((m // 2, m % 2))
@pytest.mark.parametrize('lcfg', [
LayoutConfig(ncols=3, orientation='v'),
LayoutConfig(nrows=3, orientation='v'),
])
def test_layout(lcfg):
nplots = 7
layout = RendererLayout(lcfg, nplots)
assert layout.ncols == 3
assert layout.nrows == 3
regions = layout.arrange(lambda row, col: str((row, col)))
assert len(regions) == nplots
assert regions[0] == '(0, 0)'
assert regions[2] == '(2, 0)'
assert regions[3] == '(0, 1)'
assert regions[6] == '(0, 2)'
# TODO: test get_frame()
# (integration test) ensure rendering to output works