Source code for pygal.test.test_interpolate

# -*- coding: utf-8 -*-
# This file is part of pygal
#
# A python svg graph plotting library
# Copyright © 2012-2016 Kozea
#
# This library is free software: you can redistribute it and/or modify it under
# the terms of the GNU Lesser General Public License as published by the Free
# Software Foundation, either version 3 of the License, or (at your option) any
# later version.
#
# This library is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
# details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with pygal. If not, see <http://www.gnu.org/licenses/>.

"""Interpolations tests"""

from pygal.test import make_data


[docs]def test_cubic(Chart, datas): """Test cubic interpolation""" chart = Chart(interpolate='cubic') chart = make_data(chart, datas) assert chart.render()
[docs]def test_cubic_prec(Chart, datas): """Test cubic interpolation precision""" chart = Chart(interpolate='cubic', interpolation_precision=200) chart = make_data(chart, datas) chart_low = Chart(interpolate='cubic', interpolation_precision=5) chart_low = make_data(chart, datas) assert len(chart.render()) >= len(chart_low.render())
[docs]def test_quadratic(Chart, datas): """Test quadratic interpolation""" chart = Chart(interpolate='quadratic') chart = make_data(chart, datas) assert chart.render()
[docs]def test_lagrange(Chart, datas): """Test lagrange interpolation""" chart = Chart(interpolate='lagrange') chart = make_data(chart, datas) assert chart.render()
[docs]def test_trigonometric(Chart, datas): """Test trigonometric interpolation""" chart = Chart(interpolate='trigonometric') chart = make_data(chart, datas) assert chart.render()
[docs]def test_hermite(Chart, datas): """Test hermite interpolation""" chart = Chart(interpolate='hermite') chart = make_data(chart, datas) assert chart.render()
[docs]def test_hermite_finite(Chart, datas): """Test hermite finite difference interpolation""" chart = Chart(interpolate='hermite', interpolation_parameters={'type': 'finite_difference'}) chart = make_data(chart, datas) assert chart.render()
[docs]def test_hermite_cardinal(Chart, datas): """Test hermite cardinal interpolation""" chart = Chart(interpolate='hermite', interpolation_parameters={'type': 'cardinal', 'c': .75}) chart = make_data(chart, datas) assert chart.render()
[docs]def test_hermite_catmull_rom(Chart, datas): """Test hermite catmull rom interpolation""" chart = Chart(interpolate='hermite', interpolation_parameters={'type': 'catmull_rom'}) chart = make_data(chart, datas) assert chart.render()
[docs]def test_hermite_kochanek_bartels(Chart, datas): """Test hermite kochanek bartels interpolation""" chart = Chart(interpolate='hermite', interpolation_parameters={ 'type': 'kochanek_bartels', 'b': -1, 'c': 1, 't': 1}) chart = make_data(chart, datas) assert chart.render() chart = Chart(interpolate='hermite', interpolation_parameters={ 'type': 'kochanek_bartels', 'b': -1, 'c': -8, 't': 0}) chart = make_data(chart, datas) assert chart.render() chart = Chart(interpolate='hermite', interpolation_parameters={ 'type': 'kochanek_bartels', 'b': 0, 'c': 10, 't': -1}) chart = make_data(chart, datas) assert chart.render()