pyqtgraph/tests/exporters/test_csv.py
Ogi Moore d859cec95a Replace uses of tempfile.mktemp with tempfile.NamedTemporaryFile
This issue was flagged as a security issue in the static code analyzer
2021-05-31 21:06:16 -07:00

47 lines
1.5 KiB
Python

"""
CSV export test
"""
from __future__ import division, print_function, absolute_import
import pyqtgraph as pg
import csv
import tempfile
app = pg.mkQApp()
def approxeq(a, b):
return (a-b) <= ((a + b) * 1e-6)
def test_CSVExporter():
plt = pg.plot()
y1 = [1,3,2,3,1,6,9,8,4,2]
plt.plot(y=y1, name='myPlot')
y2 = [3,4,6,1,2,4,2,3,5,3,5,1,3]
x2 = pg.np.linspace(0, 1.0, len(y2))
plt.plot(x=x2, y=y2)
y3 = [1,5,2,3,4,6,1,2,4,2,3,5,3]
x3 = pg.np.linspace(0, 1.0, len(y3)+1)
plt.plot(x=x3, y=y3, stepMode="center")
ex = pg.exporters.CSVExporter(plt.plotItem)
with tempfile.NamedTemporaryFile(mode="w+t", suffix='.csv', encoding="utf-8", delete=False) as tf:
print("using %s as a temporary file" % tf.name)
ex.export(fileName=tf.name)
lines = [line for line in csv.reader(tf)]
header = lines.pop(0)
assert header == ['myPlot_x', 'myPlot_y', 'x0001', 'y0001', 'x0002', 'y0002']
for i, vals in enumerate(lines):
vals = list(map(str.strip, vals))
assert (i >= len(y1) and vals[0] == '') or approxeq(float(vals[0]), i)
assert (i >= len(y1) and vals[1] == '') or approxeq(float(vals[1]), y1[i])
assert (i >= len(x2) and vals[2] == '') or approxeq(float(vals[2]), x2[i])
assert (i >= len(y2) and vals[3] == '') or approxeq(float(vals[3]), y2[i])
assert (i >= len(x3) and vals[4] == '') or approxeq(float(vals[4]), x3[i])
assert (i >= len(y3) and vals[5] == '') or approxeq(float(vals[5]), y3[i])