mapnik/tests/python_tests/object_test.py

#!/usr/bin/env python

from nose.tools import *

import mapnik

# Tests that exercise the functionality of Mapnik classes.

# Rule initialization
def test_rule_init():
    min_scale = 5
    max_scale = 10
    
    r = mapnik.Rule()
   
    eq_(r.name, '')
    eq_(r.title, '')
    eq_(r.min_scale, 0)
    eq_(r.max_scale, float('inf'))

    r = mapnik.Rule("Name")
    
    eq_(r.name, 'Name')
    eq_(r.title, '')
    eq_(r.min_scale, 0)
    eq_(r.max_scale, float('inf'))

    r = mapnik.Rule("Name", "Title")
    
    eq_(r.name, 'Name')
    eq_(r.title, 'Title')
    eq_(r.min_scale, 0)
    eq_(r.max_scale, float('inf'))

    r = mapnik.Rule("Name", "Title", min_scale)
    
    eq_(r.name, 'Name')
    eq_(r.title, 'Title')
    eq_(r.min_scale, min_scale)
    eq_(r.max_scale, float('inf'))

    r = mapnik.Rule("Name", "Title", min_scale, max_scale)
    
    eq_(r.name, 'Name')
    eq_(r.title, 'Title')
    eq_(r.min_scale, min_scale)
    eq_(r.max_scale, max_scale)

# Coordinate initialization
def test_coord_init():
    c = mapnik.Coord(100, 100)

    eq_(c.x, 100)
    eq_(c.y, 100)

# Coordinate multiplication
def test_coord_multiplication():
    c = mapnik.Coord(100, 100)
    c *= 2

    eq_(c.x, 200)
    eq_(c.y, 200)

# Envelope initialization
def test_envelope_init():
    e = mapnik.Envelope(100, 100, 200, 200)

    assert_true(e.contains(100, 100))
    assert_true(e.contains(100, 200))
    assert_true(e.contains(200, 200))
    assert_true(e.contains(200, 100))

    assert_true(e.contains(e.center()))
    
    assert_false(e.contains(99.9, 99.9))
    assert_false(e.contains(99.9, 200.1))
    assert_false(e.contains(200.1, 200.1))
    assert_false(e.contains(200.1, 99.9))

    eq_(e.width(), 100)
    eq_(e.height(), 100)

    eq_(e.minx, 100)
    eq_(e.miny, 100)

    eq_(e.maxx, 200)
    eq_(e.maxy, 200)

    c = e.center()

    eq_(c.x, 150)
    eq_(c.y, 150)

# Envelope multiplication
def test_envelope_multiplication():
    e = mapnik.Envelope(100, 100, 200, 200)
    e *= 2
    
    assert_true(e.contains(50, 50))
    assert_true(e.contains(50, 250))
    assert_true(e.contains(250, 250))
    assert_true(e.contains(250, 50))

    assert_false(e.contains(49.9, 49.9))
    assert_false(e.contains(49.9, 250.1))
    assert_false(e.contains(250.1, 250.1))
    assert_false(e.contains(250.1, 49.9))

    assert_true(e.contains(e.center()))
    
    eq_(e.width(), 200)
    eq_(e.height(), 200)

    eq_(e.minx, 50)
    eq_(e.miny, 50)

    eq_(e.maxx, 250)
    eq_(e.maxy, 250)

    c = e.center()

    eq_(c.x, 150)
    eq_(c.y, 150)