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95 lines
3.6 KiB
Python
95 lines
3.6 KiB
Python
import unittest
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from unittest import skipUnless
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from django.contrib.gis.gdal import HAS_GDAL
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if HAS_GDAL:
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from django.contrib.gis.gdal import Envelope, GDALException
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class TestPoint(object):
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def __init__(self, x, y):
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self.x = x
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self.y = y
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@skipUnless(HAS_GDAL, "GDAL is required")
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class EnvelopeTest(unittest.TestCase):
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def setUp(self):
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self.e = Envelope(0, 0, 5, 5)
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def test01_init(self):
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"Testing Envelope initialization."
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e1 = Envelope((0, 0, 5, 5))
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Envelope(0, 0, 5, 5)
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Envelope(0, '0', '5', 5) # Thanks to ww for this
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Envelope(e1._envelope)
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self.assertRaises(GDALException, Envelope, (5, 5, 0, 0))
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self.assertRaises(GDALException, Envelope, 5, 5, 0, 0)
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self.assertRaises(GDALException, Envelope, (0, 0, 5, 5, 3))
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self.assertRaises(GDALException, Envelope, ())
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self.assertRaises(ValueError, Envelope, 0, 'a', 5, 5)
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self.assertRaises(TypeError, Envelope, 'foo')
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self.assertRaises(GDALException, Envelope, (1, 1, 0, 0))
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try:
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Envelope(0, 0, 0, 0)
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except GDALException:
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self.fail("shouldn't raise an exception for min_x == max_x or min_y == max_y")
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def test02_properties(self):
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"Testing Envelope properties."
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e = Envelope(0, 0, 2, 3)
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self.assertEqual(0, e.min_x)
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self.assertEqual(0, e.min_y)
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self.assertEqual(2, e.max_x)
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self.assertEqual(3, e.max_y)
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self.assertEqual((0, 0), e.ll)
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self.assertEqual((2, 3), e.ur)
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self.assertEqual((0, 0, 2, 3), e.tuple)
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self.assertEqual('POLYGON((0.0 0.0,0.0 3.0,2.0 3.0,2.0 0.0,0.0 0.0))', e.wkt)
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self.assertEqual('(0.0, 0.0, 2.0, 3.0)', str(e))
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def test03_equivalence(self):
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"Testing Envelope equivalence."
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e1 = Envelope(0.523, 0.217, 253.23, 523.69)
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e2 = Envelope((0.523, 0.217, 253.23, 523.69))
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self.assertEqual(e1, e2)
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self.assertEqual((0.523, 0.217, 253.23, 523.69), e1)
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def test04_expand_to_include_pt_2_params(self):
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"Testing Envelope expand_to_include -- point as two parameters."
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self.e.expand_to_include(2, 6)
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self.assertEqual((0, 0, 5, 6), self.e)
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self.e.expand_to_include(-1, -1)
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self.assertEqual((-1, -1, 5, 6), self.e)
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def test05_expand_to_include_pt_2_tuple(self):
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"Testing Envelope expand_to_include -- point as a single 2-tuple parameter."
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self.e.expand_to_include((10, 10))
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self.assertEqual((0, 0, 10, 10), self.e)
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self.e.expand_to_include((-10, -10))
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self.assertEqual((-10, -10, 10, 10), self.e)
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def test06_expand_to_include_extent_4_params(self):
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"Testing Envelope expand_to_include -- extent as 4 parameters."
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self.e.expand_to_include(-1, 1, 3, 7)
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self.assertEqual((-1, 0, 5, 7), self.e)
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def test06_expand_to_include_extent_4_tuple(self):
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"Testing Envelope expand_to_include -- extent as a single 4-tuple parameter."
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self.e.expand_to_include((-1, 1, 3, 7))
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self.assertEqual((-1, 0, 5, 7), self.e)
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def test07_expand_to_include_envelope(self):
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"Testing Envelope expand_to_include with Envelope as parameter."
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self.e.expand_to_include(Envelope(-1, 1, 3, 7))
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self.assertEqual((-1, 0, 5, 7), self.e)
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def test08_expand_to_include_point(self):
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"Testing Envelope expand_to_include with Point as parameter."
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self.e.expand_to_include(TestPoint(-1, 1))
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self.assertEqual((-1, 0, 5, 5), self.e)
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self.e.expand_to_include(TestPoint(10, 10))
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self.assertEqual((-1, 0, 10, 10), self.e)
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