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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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