/usr/share/pyshared/graphy/backends/google_chart_api/bar_chart_test.py is in python-graphy 1.0+dfsg-3build1.
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#
# Copyright 2008 Google Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Unittest for Graphy and Google Chart API backend."""
import math
from graphy import graphy_test
from graphy import bar_chart
from graphy.backends import google_chart_api
from graphy.backends.google_chart_api import base_encoder_test
# Extend XYChartTest so that we pick up & repeat all the basic tests which
# BarCharts should continue to satisfy
class BarChartTest(base_encoder_test.XYChartTest):
def GetChart(self, *args, **kwargs):
return google_chart_api.BarChart(*args, **kwargs)
def AddToChart(self, chart, points, color=None, label=None):
return chart.AddBars(points, color=color, label=label)
def testChartType(self):
def Check(vertical, stacked, expected_type):
self.chart.vertical = vertical
self.chart.stacked = stacked
self.assertEqual(self.Param('cht'), expected_type)
Check(vertical=True, stacked=True, expected_type='bvs')
Check(vertical=True, stacked=False, expected_type='bvg')
Check(vertical=False, stacked=True, expected_type='bhs')
Check(vertical=False, stacked=False, expected_type='bhg')
def testSingleBarCase(self):
"""Test that we can handle a bar chart with only a single bar."""
self.AddToChart(self.chart, [1])
self.assertEqual(self.Param('chd'), 's:A')
def testHorizontalScaling(self):
"""Test the scaling works correctly on horizontal bar charts (which have
min/max on a different axis than other charts).
"""
self.AddToChart(self.chart, [3])
self.chart.vertical = False
self.chart.bottom.min = 0
self.chart.bottom.max = 3
self.assertEqual(self.Param('chd'), 's:9') # 9 is far right edge.
self.chart.bottom.max = 6
self.assertEqual(self.Param('chd'), 's:f') # f is right in the middle.
def testZeroPoint(self):
self.AddToChart(self.chart, [-5, 0, 5])
self.assertEqual(self.Param('chp'), str(.5)) # Auto scaling.
self.chart.left.min = 0
self.chart.left.max = 5
self.assertRaises(KeyError, self.Param, 'chp') # No negative values.
self.chart.left.min = -5
self.assertEqual(self.Param('chp'), str(.5)) # Explicit scaling.
self.chart.left.max = 15
self.assertEqual(self.Param('chp'), str(.25)) # Different zero point.
self.chart.left.max = -1
self.assertEqual(self.Param('chp'), str(1)) # Both negative values.
def testLabelsInCorrectOrder(self):
"""Test that we reverse labels for horizontal bar charts
(Otherwise they are backwards from what you would expect)
"""
self.chart.left.labels = [1, 2, 3]
self.chart.vertical = True
self.assertEqual(self.Param('chxl'), '0:|1|2|3')
self.chart.vertical = False
self.assertEqual(self.Param('chxl'), '0:|3|2|1')
def testLabelRangeDefaultsToDataScale(self):
"""Test that if you don't set axis ranges, they default to the data
scale.
"""
self.chart.auto_scale.buffer = 0 # Buffer causes trouble for testing.
self.AddToChart(self.chart, [1, 5])
self.chart.left.labels = (1, 5)
self.chart.left.labels_positions = (1, 5)
self.assertEqual(self.Param('chxr'), '0,1,5')
def testCanOverrideChbh(self):
self.chart.style = bar_chart.BarChartStyle(10, 3, 6)
self.AddToChart(self.chart, [1, 2, 3])
self.assertEqual(self.Param('chbh'), '10,3,6')
self.chart.display.extra_params['chbh'] = '5,5,2'
self.assertEqual(self.Param('chbh'), '5,5,2')
def testDefaultBarChartStyle(self):
self.assertNotIn('chbh', self.chart.display._Params(self.chart))
self.chart.style = bar_chart.BarChartStyle(None, None, None)
self.assertNotIn('chbh', self.chart.display._Params(self.chart))
self.chart.style = bar_chart.BarChartStyle(10, 3, 6)
self.assertNotIn('chbh', self.chart.display._Params(self.chart))
self.AddToChart(self.chart, [1, 2, 3])
self.assertEqual(self.Param('chbh'), '10,3,6')
self.chart.style = bar_chart.BarChartStyle(10)
self.assertEqual(self.Param('chbh'), '10,4,8')
def testAutoBarSizing(self):
self.AddToChart(self.chart, [1, 2, 3])
self.AddToChart(self.chart, [4, 5, 6])
self.chart.style = bar_chart.BarChartStyle(None, 3, 6)
self.chart.display._width = 100
self.chart.display._height = 1000
self.chart.stacked = False
self.assertEqual(self.Param('chbh'), 'a,3,6')
self.chart.stacked = True
self.assertEqual(self.Param('chbh'), 'a,3')
self.chart.vertical = False
self.chart.stacked = False
self.assertEqual(self.Param('chbh'), 'a,3,6')
self.chart.stacked = True
self.assertEqual(self.Param('chbh'), 'a,3')
self.chart.display._height = 1
self.assertEqual(self.Param('chbh'), 'a,3')
def testAutoBarSpacing(self):
self.AddToChart(self.chart, [1, 2, 3])
self.AddToChart(self.chart, [4, 5, 6])
self.chart.style = bar_chart.BarChartStyle(10, 1, None)
self.assertEqual(self.Param('chbh'), '10,1,2')
self.chart.style = bar_chart.BarChartStyle(10, None, 2)
self.assertEqual(self.Param('chbh'), '10,1,2')
self.chart.style = bar_chart.BarChartStyle(10, None, 1)
self.assertEqual(self.Param('chbh'), '10,0,1')
def testFractionalAutoBarSpacing(self):
self.AddToChart(self.chart, [1, 2, 3])
self.AddToChart(self.chart, [4, 5, 6])
self.chart.style = bar_chart.BarChartStyle(10, 0.1, None,
use_fractional_gap_spacing=True)
self.assertEqual(self.Param('chbh'), '10,1,2')
self.chart.style = bar_chart.BarChartStyle(10, None, 0.2,
use_fractional_gap_spacing=True)
self.assertEqual(self.Param('chbh'), '10,1,2')
self.chart.style = bar_chart.BarChartStyle(10, None, 0.1,
use_fractional_gap_spacing=True)
self.assertEqual(self.Param('chbh'), '10,0,1')
self.chart.style = bar_chart.BarChartStyle(None, 0.1, 0.2,
use_fractional_gap_spacing=True)
self.assertEqual(self.Param('chbh'), 'r,0.1,0.2')
self.chart.style = bar_chart.BarChartStyle(None, 0.1, None,
use_fractional_gap_spacing=True)
self.assertEqual(self.Param('chbh'), 'r,0.1,0.2')
def testStackedDataScaling(self):
self.AddToChart(self.chart, [10, 20, 30])
self.AddToChart(self.chart, [-5, -10, -15])
self.chart.stacked = True
self.assertEqual(self.Param('chd'), 's:iu6,PJD')
self.chart.stacked = False
self.assertEqual(self.Param('chd'), 's:iu6,PJD')
self.chart = self.GetChart()
self.chart.stacked = True
self.AddToChart(self.chart, [10, 20, 30])
self.AddToChart(self.chart, [5, -10, 15])
self.assertEqual(self.Param('chd'), 's:Xhr,SDc')
self.AddToChart(self.chart, [-15, -10, -45])
self.assertEqual(self.Param('chd'), 's:lrx,iYo,VYD')
# TODO: Figure out how to deal with missing data points, test them
def testNegativeBars(self):
self.chart.stacked = True
self.AddToChart(self.chart, [-10,-20,-30])
self.assertEqual(self.Param('chd'), 's:oVD')
self.AddToChart(self.chart, [-1,-2,-3])
self.assertEqual(self.Param('chd'), 's:pZI,531')
self.chart.stacked = False
self.assertEqual(self.Param('chd'), 's:pWD,642')
if __name__ == '__main__':
graphy_test.main()
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