# Copyright (c) 2008-2009 Aryeh Leib Taurog, all rights reserved.

# Modified from original contribution by Aryeh Leib Taurog, which was

# released under the New BSD license.

import unittest

import django.utils.copycompat as copy

from django.contrib.gis.geos import *

from django.contrib.gis.geos.error import GEOSIndexError

def getItem(o,i): return o[i]

def delItem(o,i): del o[i]

def setItem(o,i,v): o[i] = v

def api_get_distance(x): return x.distance(Point(-200,-200))

def api_get_buffer(x): return x.buffer(10)

def api_get_geom_typeid(x): return x.geom_typeid

def api_get_num_coords(x): return x.num_coords

def api_get_centroid(x): return x.centroid

def api_get_empty(x): return x.empty

def api_get_valid(x): return x.valid

def api_get_simple(x): return x.simple

def api_get_ring(x): return x.ring

def api_get_boundary(x): return x.boundary

def api_get_convex_hull(x): return x.convex_hull

def api_get_extent(x): return x.extent

def api_get_area(x): return x.area

def api_get_length(x): return x.length

geos_function_tests =  [ val for name, val in vars().items()

                        if hasattr(val, '__call__')

                        and name.startswith('api_get_') ]

class GEOSMutationTest(unittest.TestCase):

    """

    Tests Pythonic Mutability of Python GEOS geometry wrappers

    get/set/delitem on a slice, normal list methods

    """

    def test00_GEOSIndexException(self):

        'Testing Geometry GEOSIndexError'

        p = Point(1,2)

        for i in range(-2,2): p._checkindex(i)

        self.assertRaises(GEOSIndexError, p._checkindex, 2)

        self.assertRaises(GEOSIndexError, p._checkindex, -3)

    def test01_PointMutations(self):

        'Testing Point mutations'

        for p in (Point(1,2,3), fromstr('POINT (1 2 3)')):

            self.assertEqual(p._get_single_external(1), 2.0, 'Point _get_single_external')

            # _set_single

            p._set_single(0,100)

            self.assertEqual(p.coords, (100.0,2.0,3.0), 'Point _set_single')

            # _set_list

            p._set_list(2,(50,3141))

            self.assertEqual(p.coords, (50.0,3141.0), 'Point _set_list')

    def test02_PointExceptions(self):

        'Testing Point exceptions'

        self.assertRaises(TypeError, Point, range(1))

        self.assertRaises(TypeError, Point, range(4))

    def test03_PointApi(self):

        'Testing Point API'

        q = Point(4,5,3)

        for p in (Point(1,2,3), fromstr('POINT (1 2 3)')):

            p[0:2] = [4,5]

            for f in geos_function_tests:

                self.assertEqual(f(q), f(p), 'Point ' + f.__name__)

    def test04_LineStringMutations(self):

        'Testing LineString mutations'

        for ls in (LineString((1,0),(4,1),(6,-1)),

                    fromstr('LINESTRING (1 0,4 1,6 -1)')):

            self.assertEqual(ls._get_single_external(1), (4.0,1.0), 'LineString _get_single_external')

            # _set_single

            ls._set_single(0,(-50,25))

            self.assertEqual(ls.coords, ((-50.0,25.0),(4.0,1.0),(6.0,-1.0)), 'LineString _set_single')

            # _set_list

            ls._set_list(2, ((-50.0,25.0),(6.0,-1.0)))

            self.assertEqual(ls.coords, ((-50.0,25.0),(6.0,-1.0)), 'LineString _set_list')

            lsa = LineString(ls.coords)

            for f in geos_function_tests:

                self.assertEqual(f(lsa), f(ls), 'LineString ' + f.__name__)

    def test05_Polygon(self):

        'Testing Polygon mutations'

        for pg in (Polygon(((1,0),(4,1),(6,-1),(8,10),(1,0)),

                            ((5,4),(6,4),(6,3),(5,4))),

                    fromstr('POLYGON ((1 0,4 1,6 -1,8 10,1 0),(5 4,6 4,6 3,5 4))')):

            self.assertEqual(pg._get_single_external(0),

                            LinearRing((1,0),(4,1),(6,-1),(8,10),(1,0)),

                            'Polygon _get_single_external(0)')

            self.assertEqual(pg._get_single_external(1),

                            LinearRing((5,4),(6,4),(6,3),(5,4)),

                            'Polygon _get_single_external(1)')

            # _set_list

            pg._set_list(2, (((1,2),(10,0),(12,9),(-1,15),(1,2)),

                            ((4,2),(5,2),(5,3),(4,2))))

            self.assertEqual(pg.coords,

                    (((1.0,2.0),(10.0,0.0),(12.0,9.0),(-1.0,15.0),(1.0,2.0)),

                        ((4.0,2.0),(5.0,2.0),(5.0,3.0),(4.0,2.0))),

                    'Polygon _set_list')

            lsa = Polygon(*pg.coords)

            for f in geos_function_tests:

                self.assertEqual(f(lsa), f(pg), 'Polygon ' + f.__name__)

    def test06_Collection(self):

        'Testing Collection mutations'

        for mp in (MultiPoint(*map(Point,((3,4),(-1,2),(5,-4),(2,8)))),

                    fromstr('MULTIPOINT (3 4,-1 2,5 -4,2 8)')):

            self.assertEqual(mp._get_single_external(2), Point(5,-4), 'Collection _get_single_external')

            mp._set_list(3, map(Point,((5,5),(3,-2),(8,1))))

            self.assertEqual(mp.coords, ((5.0,5.0),(3.0,-2.0),(8.0,1.0)), 'Collection _set_list')

            lsa = MultiPoint(*map(Point,((5,5),(3,-2),(8,1))))

            for f in geos_function_tests:

                self.assertEqual(f(lsa), f(mp), 'MultiPoint ' + f.__name__)

def suite():

    s = unittest.TestSuite()

    s.addTest(unittest.makeSuite(GEOSMutationTest))

    return s

def run(verbosity=2):

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

if __name__ == '__main__':

    run()