import unittest

from django.contrib.gis.gdal import Envelope, OGRException

class TestPoint(object):

    def __init__(self, x, y):

        self.x = x

        self.y = y

class EnvelopeTest(unittest.TestCase):

    def setUp(self): 

        self.e = Envelope(0, 0, 5, 5) 

    def test01_init(self):

        "Testing Envelope initilization."

        e1 = Envelope((0, 0, 5, 5))

        e2 = Envelope(0, 0, 5, 5)

        e3 = Envelope(0, '0', '5', 5) # Thanks to ww for this

        e4 = Envelope(e1._envelope)

        self.assertRaises(OGRException, Envelope, (5, 5, 0, 0))

        self.assertRaises(OGRException, Envelope, 5, 5, 0, 0)

        self.assertRaises(OGRException, Envelope, (0, 0, 5, 5, 3))

        self.assertRaises(OGRException, Envelope, ())

        self.assertRaises(ValueError, Envelope, 0, 'a', 5, 5)

        self.assertRaises(TypeError, Envelope, u'foo')

        self.assertRaises(OGRException, Envelope, (1, 1, 0, 0)) 

        try: 

            Envelope(0, 0, 0, 0) 

        except OGRException: 

            self.fail("shouldn't raise an exception for min_x == max_x or min_y == max_y")

    def test02_properties(self):

        "Testing Envelope properties."

        e = Envelope(0, 0, 2, 3)

        self.assertEqual(0, e.min_x)

        self.assertEqual(0, e.min_y)

        self.assertEqual(2, e.max_x)

        self.assertEqual(3, e.max_y)

        self.assertEqual((0, 0), e.ll)

        self.assertEqual((2, 3), e.ur)

        self.assertEqual((0, 0, 2, 3), e.tuple)

        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)

        self.assertEqual('(0.0, 0.0, 2.0, 3.0)', str(e))

    def test03_equivalence(self):

        "Testing Envelope equivalence."

        e1 = Envelope(0.523, 0.217, 253.23, 523.69)

        e2 = Envelope((0.523, 0.217, 253.23, 523.69))

        self.assertEqual(e1, e2)

        self.assertEqual((0.523, 0.217, 253.23, 523.69), e1)

    def test04_expand_to_include_pt_2_params(self): 

        "Testing Envelope expand_to_include -- point as two parameters." 

        self.e.expand_to_include(2, 6) 

        self.assertEqual((0, 0, 5, 6), self.e) 

        self.e.expand_to_include(-1, -1) 

        self.assertEqual((-1, -1, 5, 6), self.e) 

    def test05_expand_to_include_pt_2_tuple(self): 

        "Testing Envelope expand_to_include -- point as a single 2-tuple parameter." 

        self.e.expand_to_include((10, 10)) 

        self.assertEqual((0, 0, 10, 10), self.e) 

        self.e.expand_to_include((-10, -10)) 

        self.assertEqual((-10, -10, 10, 10), self.e) 

    def test06_expand_to_include_extent_4_params(self): 

        "Testing Envelope expand_to_include -- extent as 4 parameters." 

        self.e.expand_to_include(-1, 1, 3, 7) 

        self.assertEqual((-1, 0, 5, 7), self.e) 

    def test06_expand_to_include_extent_4_tuple(self): 

        "Testing Envelope expand_to_include -- extent as a single 4-tuple parameter." 

        self.e.expand_to_include((-1, 1, 3, 7)) 

        self.assertEqual((-1, 0, 5, 7), self.e) 

    def test07_expand_to_include_envelope(self): 

        "Testing Envelope expand_to_include with Envelope as parameter." 

        self.e.expand_to_include(Envelope(-1, 1, 3, 7)) 

        self.assertEqual((-1, 0, 5, 7), self.e) 

    def test08_expand_to_include_point(self): 

        "Testing Envelope expand_to_include with Point as parameter." 

        self.e.expand_to_include(TestPoint(-1, 1)) 

        self.assertEqual((-1, 0, 5, 5), self.e) 

        self.e.expand_to_include(TestPoint(10, 10)) 

        self.assertEqual((-1, 0, 10, 10), self.e) 

def suite():

    s = unittest.TestSuite()

    s.addTest(unittest.makeSuite(EnvelopeTest))

    return s

def run(verbosity=2):

    unittest.TextTestRunner(verbosity=verbosity).run(suite())