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# coding: utf-8
# /*##########################################################################
#
# Copyright (c) 2015-2018 European Synchrotron Radiation Facility
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
# ###########################################################################*/
from __future__ import absolute_import, division, unicode_literals
__authors__ = ["P. Kenter"]
__license__ = "MIT"
__date__ = "06/04/2018"
import datetime as dt
import unittest
from silx.gui.plot._utils.dtime_ticklayout import (
calcTicks, DtUnit, SECONDS_PER_YEAR)
class TestTickLayout(unittest.TestCase):
"""Test ticks layout algorithms"""
def testSmallMonthlySpacing(self):
""" Tests a range that did result in a spacing of less than 1 month.
It is impossible to add fractional month so the unit must be in days
"""
from dateutil import parser
d1 = parser.parse("2017-01-03 13:15:06.000044")
d2 = parser.parse("2017-03-08 09:16:16.307584")
_ticks, _units, spacing = calcTicks(d1, d2, nTicks=4)
self.assertEqual(spacing, DtUnit.DAYS)
def testNoCrash(self):
""" Creates many combinations of and number-of-ticks and end-dates;
tests that it doesn't give an exception and returns a reasonable number
of ticks.
"""
d1 = dt.datetime(2017, 1, 3, 13, 15, 6, 44)
value = 100e-6 # Start at 100 micro sec range.
while value <= 200 * SECONDS_PER_YEAR:
d2 = d1 + dt.timedelta(microseconds=value*1e6) # end date range
for numTicks in range(2, 12):
ticks, _, _ = calcTicks(d1, d2, numTicks)
margin = 2.5
self.assertTrue(
numTicks/margin <= len(ticks) <= numTicks*margin,
"Condition {} <= {} <= {} failed for # ticks={} and d2={}:"
.format(numTicks/margin, len(ticks), numTicks * margin,
numTicks, d2))
value = value * 1.5 # let date period grow exponentially
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