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# coding=utf-8
"""Test units inkex module functionality"""
from inkex.units import are_near_relative, convert_unit, discover_unit, parse_unit, render_unit
from inkex.tester import TestCase
class UnitsTest(TestCase):
"""Tests for Inkscape Units handling"""
def test_parse_unit(self):
"""Test parsing a unit in a document"""
self.assertEqual(parse_unit('50px'), (50.0, 'px'))
self.assertEqual(parse_unit('50'), (50.0, 'px'))
self.assertEqual(parse_unit('50quaks'), None)
self.assertEqual(parse_unit('50quaks', default_value=10), (10.0, 'px'))
self.assertEqual(parse_unit('50%'), (50.0, '%'))
def test_near(self):
"""Test the closeness of numbers"""
self.assertFalse(are_near_relative(10.0, 5.0))
self.assertTrue(are_near_relative(10.0, 9.99))
def test_discover_unit(self):
"""Based on the size of a document and it's viewBox"""
self.assertEqual(discover_unit('50px', 50), 'px')
self.assertEqual(discover_unit('100mm', 3.94), 'in')
self.assertEqual(discover_unit('3779', 1.0), 'm')
self.assertEqual(discover_unit('50quaks', 150), 'px')
def test_convert_unit(self):
"""Convert units from one to another"""
self.assertEqual(convert_unit("10mm", 'px'), 37.79527559055118)
self.assertEqual(convert_unit("1in", 'cm'), 2.54)
self.assertEqual(convert_unit("37.79527559055118px", 'mm'), 10.0)
self.assertEqual(convert_unit("1in", ''), 96.0)
self.assertEqual(convert_unit("96", 'in'), 1.0)
self.assertEqual(convert_unit("10%", 'mm'), 0.0)
self.assertEqual(convert_unit("1in", 'grad'), 0.0)
self.assertEqual(convert_unit("10quaks", 'mm'), 0.0)
self.assertEqual(convert_unit("10mm", 'quaks'), 0.0)
def test_render_unit(self):
"""Convert unit and value pair into rendered unit string"""
self.assertEqual(render_unit(10.0, 'mm'), '10mm')
self.assertEqual(render_unit(10.01, 'mm'), '10.01mm')
self.assertEqual(render_unit(10.000001, 'mm'), '10mm')
self.assertEqual(render_unit('10cm', 'mm'), '10cm')
def test_number_parsing(self):
"""Width number parsing test"""
for value in (
'100mm',
'100 mm',
' 100mm',
'100mm ',
'+100mm',
'100.0mm',
'100.0e0mm',
'10.0e1mm',
'10.0e+1mm',
'1000.0e-1mm',
'.1e+3mm',
'+.1e+3mm'):
self.assertEqual(parse_unit(value), (100, 'mm'))
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