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test_distance.py
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test_distance.py
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import unittest
from metar.Datatypes import distance, UnitsError
class DistanceTest(unittest.TestCase):
def testDefaults(self):
self.assertEqual( distance("10").value(), 10.0 )
self.assertEqual( distance("1000").value("M"), 1000.0 )
self.assertEqual( distance("1500").string(), "1500 meters" )
self.assertEqual( distance("1500",None).string(), "1500 meters" )
self.assertEqual( distance("5","SM").string(), "5 miles" )
def testInputs(self):
self.assertEqual( distance("10").value(), 10.0 )
self.assertEqual( distance(10).value(), 10.0 )
self.assertEqual( distance(10.0).value(), 10.0 )
self.assertEqual( distance(10.0, None).value(), 10.0 )
self.assertEqual( distance("1/2").value(), 0.5 )
self.assertEqual( distance("1 1/2").value(), 1.5 )
self.assertEqual( distance("11/2").value(), 1.5 )
self.assertEqual( distance("10", gtlt=">").value(), 10.0 )
self.assertEqual( distance("10", None, "<").value(), 10.0 )
def testErrorChecking(self):
self.assertRaises( ValueError, distance, "10SM" )
self.assertRaises( ValueError, distance, "M1/2SM" )
self.assertRaises( ValueError, distance, "1000", "M", "=" )
self.assertRaises( ValueError, distance, "1000", "M", "gt" )
self.assertRaises( UnitsError, distance, "10", "NM" )
self.assertRaises( UnitsError, distance("1000").value, "furlongs" )
self.assertRaises( UnitsError, distance("500").string, "yards" )
def testConversions(self):
self.assertEqual( distance("5","SM").value("SM"), 5.0 )
self.assertEqual( distance("5","SM").value("MI"), 5.0 )
self.assertAlmostEqual( distance("5","SM").value("M"), 8046.7, 1 )
self.assertAlmostEqual( distance("5","SM").value("KM"), 8.05, 2 )
self.assertAlmostEqual( distance("5","SM").value("FT"), 26400.0, 1 )
self.assertEqual( distance("5000","M").value("M"), 5000.0 )
self.assertEqual( distance("5000","M").value("KM"), 5.0 )
self.assertAlmostEqual( distance("5000","M").value("SM"), 3.1, 1 )
self.assertAlmostEqual( distance("5000","M").value("MI"), 3.1, 1 )
self.assertAlmostEqual( distance("5000","M").value("FT"), 16404.0, 0 )
self.assertEqual( distance("5","KM").value("KM"), 5.0 )
self.assertEqual( distance("5","KM").value("M"), 5000.0 )
self.assertAlmostEqual( distance("5","KM").value("SM"), 3.1, 1 )
self.assertAlmostEqual( distance("5","KM").value("FT"), 16404.0, 0 )
self.assertEqual( distance("5280","FT").value("FT"), 5280.0 )
self.assertAlmostEqual( distance("5280","FT").value("SM"), 1.0, 5 )
self.assertAlmostEqual( distance("5280","FT").value("MI"), 1.0, 5 )
self.assertAlmostEqual( distance("5280","FT").value("KM"), 1.609, 3 )
self.assertAlmostEqual( distance("5280","FT").value("M"), 1609, 0 )
self.assertAlmostEqual( distance("1 1/2","SM").value("FT"), 7920.0, 2 )
self.assertAlmostEqual( distance("1/4","SM").value("FT"), 1320.0, 2 )
self.assertEqual( distance("1 1/2","SM").string("SM"), "1 1/2 miles" )
self.assertEqual( distance("3/16","SM").string("SM"), "3/16 miles" )
self.assertEqual( distance("1/4","SM").string("FT"), "1320 feet" )
self.assertEqual( distance("1/4","SM","<").string("SM"), "less than 1/4 miles" )
self.assertEqual( distance("5280","FT").string("KM"), "1.6 km" )
self.assertEqual( distance("10000","M",">").string("M"), "greater than 10000 meters" )
if __name__=='__main__':
unittest.main()