mapnik/tests/python_tests/object_test.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-

import os
from nose.tools import *
from utilities import execution_path, run_all
import tempfile

import mapnik

def setup():
    # All of the paths used are relative, if we run the tests
    # from another directory we need to chdir()
    os.chdir(execution_path('.'))

def test_debug_symbolizer():
    s = mapnik.DebugSymbolizer()
    eq_(s.mode,mapnik.debug_symbolizer_mode.collision)

def test_raster_symbolizer():
    s = mapnik.RasterSymbolizer()
    eq_(s.comp_op,mapnik.CompositeOp.src_over) # note: mode is deprecated
    eq_(s.scaling,mapnik.scaling_method.NEAR)
    eq_(s.opacity,1.0)
    eq_(s.colorizer,None)
    eq_(s.filter_factor,-1)
    eq_(s.mesh_size,16)
    eq_(s.premultiplied,None)
    s.premultiplied = True
    eq_(s.premultiplied,True)

def test_line_pattern():
    s = mapnik.LinePatternSymbolizer(mapnik.PathExpression('../data/images/dummy.png'))
    eq_(s.filename, '../data/images/dummy.png')
    eq_(s.smooth,0.0)
    eq_(s.transform,'')
    eq_(s.offset,0.0)
    eq_(s.comp_op,mapnik.CompositeOp.src_over)
    eq_(s.clip,True)

def test_line_symbolizer():
    s = mapnik.LineSymbolizer()
    eq_(s.rasterizer, mapnik.line_rasterizer.FULL)
    eq_(s.smooth,0.0)
    eq_(s.comp_op,mapnik.CompositeOp.src_over)
    eq_(s.clip,True)
    eq_(s.stroke.width, 1)
    eq_(s.stroke.opacity, 1)
    eq_(s.stroke.color, mapnik.Color('black'))
    eq_(s.stroke.line_cap, mapnik.line_cap.BUTT_CAP)
    eq_(s.stroke.line_join, mapnik.line_join.MITER_JOIN)

    l = mapnik.LineSymbolizer(mapnik.Color('blue'), 5.0)

    eq_(l.stroke.width, 5)
    eq_(l.stroke.opacity, 1)
    eq_(l.stroke.color, mapnik.Color('blue'))
    eq_(l.stroke.line_cap, mapnik.line_cap.BUTT_CAP)
    eq_(l.stroke.line_join, mapnik.line_join.MITER_JOIN)

    s = mapnik.Stroke(mapnik.Color('blue'), 5.0)
    l = mapnik.LineSymbolizer(s)

    eq_(l.stroke.width, 5)
    eq_(l.stroke.opacity, 1)
    eq_(l.stroke.color, mapnik.Color('blue'))
    eq_(l.stroke.line_cap, mapnik.line_cap.BUTT_CAP)
    eq_(l.stroke.line_join, mapnik.line_join.MITER_JOIN)

def test_line_symbolizer_stroke_reference():
    l = mapnik.LineSymbolizer(mapnik.Color('green'),0.1)
    l.stroke.add_dash(.1,.1)
    l.stroke.add_dash(.1,.1)
    eq_(l.stroke.get_dashes(), [(.1,.1),(.1,.1)])
    eq_(l.stroke.color,mapnik.Color('green'))
    eq_(l.stroke.opacity,1.0)
    assert_almost_equal(l.stroke.width,0.1)

# https://github.com/mapnik/mapnik/issues/1427
def test_stroke_dash_api():
    stroke = mapnik.Stroke()
    dashes = [(1.0,1.0)]
    stroke.dasharray = dashes
    eq_(stroke.dasharray, dashes)
    stroke.add_dash(.1,.1)
    dashes.append((.1,.1))
    eq_(stroke.dasharray, dashes)


def test_text_symbolizer():
    s = mapnik.TextSymbolizer()
    eq_(s.comp_op,mapnik.CompositeOp.src_over)
    eq_(s.clip,True)
    eq_(s.halo_rasterizer,mapnik.halo_rasterizer.FULL)

    # https://github.com/mapnik/mapnik/issues/1420
    eq_(s.text_transform, mapnik.text_transform.NONE)

    # https://github.com/mapnik/mapnik/issues/1427
    eq_(s.wrap_char,ord(' '))
    eq_(s.wrap_character,ord(' '))
    s.wrap_char = ord('\n')
    eq_(s.wrap_char,ord('\n'))
    eq_(s.wrap_character,ord('\n'))
    eq_(s.format.wrap_character,ord('\n'))
    s.wrap_character = ord('\r')
    eq_(s.wrap_char,ord('\r'))
    eq_(s.wrap_character,ord('\r'))
    eq_(s.format.wrap_character,ord('\r'))
    s.format.wrap_character = ord(' ')
    eq_(s.wrap_char,ord(' '))
    eq_(s.wrap_character,ord(' '))
    eq_(s.format.wrap_character,ord(' '))

    # old args required method
    ts = mapnik.TextSymbolizer(mapnik.Expression('[Field_Name]'), 'Font Name', 8, mapnik.Color('black'))
#    eq_(str(ts.name), str(mapnik2.Expression('[Field_Name]'))) name field is no longer supported
    eq_(ts.format.face_name, 'Font Name')
    eq_(ts.format.text_size, 8)
    eq_(ts.format.fill, mapnik.Color('black'))
    eq_(ts.properties.label_placement, mapnik.label_placement.POINT_PLACEMENT)
    eq_(ts.properties.horizontal_alignment, mapnik.horizontal_alignment.AUTO)

def test_shield_symbolizer_init():
    s = mapnik.ShieldSymbolizer(mapnik.Expression('[Field Name]'), 'DejaVu Sans Bold', 6, mapnik.Color('#000000'), mapnik.PathExpression('../data/images/dummy.png'))
    eq_(s.comp_op,mapnik.CompositeOp.src_over)
    eq_(s.clip,True)
    eq_(s.displacement, (0.0,0.0))
    eq_(s.allow_overlap, False)
    eq_(s.avoid_edges, False)
    eq_(s.character_spacing,0)
    #eq_(str(s.name), str(mapnik2.Expression('[Field Name]'))) name field is no longer supported
    eq_(s.face_name, 'DejaVu Sans Bold')
    eq_(s.allow_overlap, False)
    eq_(s.fill, mapnik.Color('#000000'))
    eq_(s.halo_fill, mapnik.Color('rgb(255,255,255)'))
    eq_(s.halo_radius, 0)
    eq_(s.label_placement, mapnik.label_placement.POINT_PLACEMENT)
    eq_(s.minimum_distance, 0.0)
    eq_(s.text_ratio, 0)
    eq_(s.text_size, 6)
    eq_(s.wrap_width, 0)
    eq_(s.vertical_alignment, mapnik.vertical_alignment.AUTO)
    eq_(s.label_spacing, 0)
    eq_(s.label_position_tolerance, 0)
    # 22.5 * M_PI/180.0 initialized by default
    assert_almost_equal(s.max_char_angle_delta, 0.39269908169872414)

    eq_(s.wrap_character, ' ')
    eq_(s.text_transform, mapnik.text_transform.NONE)
    eq_(s.line_spacing, 0)
    eq_(s.character_spacing, 0)

    # r1341
    eq_(s.wrap_before, False)
    eq_(s.horizontal_alignment, mapnik.horizontal_alignment.AUTO)
    eq_(s.justify_alignment, mapnik.justify_alignment.AUTO)
    eq_(s.opacity, 1.0)

    # r2300
    eq_(s.minimum_padding, 0.0)

    # was mixed with s.opacity
    eq_(s.text_opacity, 1.0)

    eq_(s.shield_displacement, (0.0,0.0))
    # TODO - the pattern in bindings seems to be to get/set
    # strings for PathExpressions... should we pass objects?
    eq_(s.filename, '../data/images/dummy.png')

    # 11c34b1: default transform list is empty, not identity matrix
    eq_(s.transform, '')

    eq_(s.fontset, None)

# ShieldSymbolizer missing image file
# images paths are now PathExpressions are evaluated at runtime
# so it does not make sense to throw...
#@raises(RuntimeError)
#def test_shieldsymbolizer_missing_image():
#    s = mapnik.ShieldSymbolizer(mapnik.Expression('[Field Name]'), 'DejaVu Sans Bold', 6, mapnik.Color('#000000'), mapnik.PathExpression('../#data/images/broken.png'))

def test_shield_symbolizer_modify():
    s = mapnik.ShieldSymbolizer(mapnik.Expression('[Field Name]'), 'DejaVu Sans Bold', 6, mapnik.Color('#000000'), mapnik.PathExpression('../data/images/dummy.png'))
    # transform expression
    def check_transform(expr, expect_str=None):
        s.transform = expr
        eq_(s.transform, expr if expect_str is None else expect_str)
    check_transform("matrix(1 2 3 4 5 6)", "matrix(1, 2, 3, 4, 5, 6)")
    check_transform("matrix(1, 2, 3, 4, 5, 6 +7)", "matrix(1, 2, 3, 4, 5, (6+7))")
    check_transform("rotate([a])")
    check_transform("rotate([a] -2)", "rotate(([a]-2))")
    check_transform("rotate([a] -2 -3)", "rotate([a], -2, -3)")
    check_transform("rotate([a] -2 -3 -4)", "rotate(((([a]-2)-3)-4))")
    check_transform("rotate([a] -2, 3, 4)", "rotate(([a]-2), 3, 4)")
    check_transform("translate([tx]) rotate([a])")
    check_transform("scale([sx], [sy]/2)")
    # TODO check expected failures

def test_point_symbolizer():
    p = mapnik.PointSymbolizer()
    eq_(p.filename,'')
    eq_(p.transform,'')
    eq_(p.opacity,1.0)
    eq_(p.allow_overlap,False)
    eq_(p.ignore_placement,False)
    eq_(p.comp_op,mapnik.CompositeOp.src_over)
    eq_(p.placement, mapnik.point_placement.CENTROID)

    p = mapnik.PointSymbolizer(mapnik.PathExpression("../data/images/dummy.png"))
    p.allow_overlap = True
    p.opacity = 0.5
    p.ignore_placement = True
    p.placement = mapnik.point_placement.INTERIOR
    eq_(p.allow_overlap, True)
    eq_(p.opacity, 0.5)
    eq_(p.filename,'../data/images/dummy.png')
    eq_(p.ignore_placement,True)
    eq_(p.placement, mapnik.point_placement.INTERIOR)

def test_markers_symbolizer():
    p = mapnik.MarkersSymbolizer()
    eq_(p.allow_overlap, False)
    eq_(p.opacity,1.0)
    eq_(p.fill_opacity,None)
    eq_(p.filename,'shape://ellipse')
    eq_(p.placement,mapnik.marker_placement.POINT_PLACEMENT)
    eq_(p.multi_policy,mapnik.marker_multi_policy.EACH)
    eq_(p.fill,None)
    eq_(p.ignore_placement,False)
    eq_(p.spacing,100)
    eq_(p.max_error,0.2)
    eq_(p.width,None)
    eq_(p.height,None)
    eq_(p.transform,'')
    eq_(p.clip,True)
    eq_(p.comp_op,mapnik.CompositeOp.src_over)


    p.width = mapnik.Expression('12')
    p.height = mapnik.Expression('12')
    eq_(str(p.width),'12')
    eq_(str(p.height),'12')

    p.width = mapnik.Expression('[field] + 2')
    p.height = mapnik.Expression('[field] + 2')
    eq_(str(p.width),'([field]+2)')
    eq_(str(p.height),'([field]+2)')

    stroke = mapnik.Stroke()
    stroke.color = mapnik.Color('black')
    stroke.width = 1.0

    p.stroke = stroke
    p.fill = mapnik.Color('white')
    p.allow_overlap = True
    p.opacity = 0.5
    p.fill_opacity = 0.5
    p.placement = mapnik.marker_placement.LINE_PLACEMENT
    p.multi_policy = mapnik.marker_multi_policy.WHOLE

    eq_(p.allow_overlap, True)
    eq_(p.opacity, 0.5)
    eq_(p.fill_opacity, 0.5)
    eq_(p.multi_policy,mapnik.marker_multi_policy.WHOLE)
    eq_(p.placement,mapnik.marker_placement.LINE_PLACEMENT)

    #https://github.com/mapnik/mapnik/issues/1285
    #https://github.com/mapnik/mapnik/issues/1427
    p.marker_type = 'arrow'
    eq_(p.marker_type,'shape://arrow')
    eq_(p.filename,'shape://arrow')


# PointSymbolizer missing image file
# images paths are now PathExpressions are evaluated at runtime
# so it does not make sense to throw...
#@raises(RuntimeError)
#def test_pointsymbolizer_missing_image():
 #   p = mapnik.PointSymbolizer(mapnik.PathExpression("../data/images/broken.png"))

def test_polygon_symbolizer():
    p = mapnik.PolygonSymbolizer()
    eq_(p.smooth,0.0)
    eq_(p.comp_op,mapnik.CompositeOp.src_over)
    eq_(p.clip,True)
    eq_(p.fill, mapnik.Color('gray'))
    eq_(p.fill_opacity, 1)

    p = mapnik.PolygonSymbolizer(mapnik.Color('blue'))

    eq_(p.fill, mapnik.Color('blue'))
    eq_(p.fill_opacity, 1)

def test_building_symbolizer_init():
    p = mapnik.BuildingSymbolizer()

    eq_(p.fill, mapnik.Color('gray'))
    eq_(p.fill_opacity, 1)
    eq_(p.height,None)

def test_stroke_init():
    s = mapnik.Stroke()

    eq_(s.width, 1)
    eq_(s.opacity, 1)
    eq_(s.color, mapnik.Color('black'))
    eq_(s.line_cap, mapnik.line_cap.BUTT_CAP)
    eq_(s.line_join, mapnik.line_join.MITER_JOIN)
    eq_(s.gamma,1.0)

    s = mapnik.Stroke(mapnik.Color('blue'), 5.0)
    s.gamma = .5

    eq_(s.width, 5)
    eq_(s.opacity, 1)
    eq_(s.color, mapnik.Color('blue'))
    eq_(s.gamma, .5)
    eq_(s.line_cap, mapnik.line_cap.BUTT_CAP)
    eq_(s.line_join, mapnik.line_join.MITER_JOIN)

def test_stroke_dash_arrays():
    s = mapnik.Stroke()
    s.add_dash(1,2)
    s.add_dash(3,4)
    s.add_dash(5,6)

    eq_(s.get_dashes(), [(1,2),(3,4),(5,6)])

def test_map_init():
    m = mapnik.Map(256, 256)

    eq_(m.width, 256)
    eq_(m.height, 256)
    eq_(m.srs, '+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs')
    eq_(m.base, '')
    eq_(m.maximum_extent, None)
    eq_(m.background_image, None)
    eq_(m.background_image_comp_op, mapnik.CompositeOp.src_over)
    eq_(m.background_image_opacity, 1.0)

    m = mapnik.Map(256, 256, '+proj=latlong')
    eq_(m.srs, '+proj=latlong')

def test_map_style_access():
    m = mapnik.Map(256, 256)
    sty = mapnik.Style()
    m.append_style("style",sty)
    styles = list(m.styles)
    eq_(len(styles),1)
    eq_(styles[0][0],'style')
    # returns a copy so let's just check it is the right instance
    eq_(isinstance(styles[0][1],mapnik.Style),True)

def test_map_maximum_extent_modification():
    m = mapnik.Map(256, 256)
    eq_(m.maximum_extent, None)
    m.maximum_extent = mapnik.Box2d()
    eq_(m.maximum_extent, mapnik.Box2d())
    m.maximum_extent = None
    eq_(m.maximum_extent, None)

# Map initialization from string
def test_map_init_from_string():
    map_string = '''<Map background-color="steelblue" base="./" srs="+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs">
     <Style name="My Style">
      <Rule>
       <PolygonSymbolizer fill="#f2eff9"/>
       <LineSymbolizer stroke="rgb(50%,50%,50%)" stroke-width="0.1"/>
      </Rule>
     </Style>
     <Layer name="boundaries">
      <StyleName>My Style</StyleName>
       <Datasource>
        <Parameter name="type">shape</Parameter>
        <Parameter name="file">../../demo/data/boundaries</Parameter>
       </Datasource>
      </Layer>
    </Map>'''

    m = mapnik.Map(600, 300)
    eq_(m.base, '')
    try:
        mapnik.load_map_from_string(m, map_string)
        eq_(m.base, './')
        mapnik.load_map_from_string(m, map_string, False, "") # this "" will have no effect
        eq_(m.base, './')

        tmp_dir = tempfile.gettempdir()
        try:
            mapnik.load_map_from_string(m, map_string, False, tmp_dir)
        except RuntimeError:
            pass # runtime error expected because shapefile path should be wrong and datasource will throw
        eq_(m.base, tmp_dir) # tmp_dir will be set despite the exception because load_map mostly worked
        m.base = 'foo'
        mapnik.load_map_from_string(m, map_string, True, ".")
        eq_(m.base, '.')
    except RuntimeError, e:
        # only test datasources that we have installed
        if not 'Could not create datasource' in str(e):
            raise RuntimeError(e)

# Color initialization
@raises(Exception) # Boost.Python.ArgumentError
def test_color_init_errors():
    c = mapnik.Color()

@raises(RuntimeError)
def test_color_init_errors():
    c = mapnik.Color('foo') # mapnik config

def test_color_init():
    c = mapnik.Color('blue')

    eq_(c.a, 255)
    eq_(c.r, 0)
    eq_(c.g, 0)
    eq_(c.b, 255)

    eq_(c.to_hex_string(), '#0000ff')

    c = mapnik.Color('#f2eff9')

    eq_(c.a, 255)
    eq_(c.r, 242)
    eq_(c.g, 239)
    eq_(c.b, 249)

    eq_(c.to_hex_string(), '#f2eff9')

    c = mapnik.Color('rgb(50%,50%,50%)')

    eq_(c.a, 255)
    eq_(c.r, 128)
    eq_(c.g, 128)
    eq_(c.b, 128)

    eq_(c.to_hex_string(), '#808080')

    c = mapnik.Color(0, 64, 128)

    eq_(c.a, 255)
    eq_(c.r, 0)
    eq_(c.g, 64)
    eq_(c.b, 128)

    eq_(c.to_hex_string(), '#004080')

    c = mapnik.Color(0, 64, 128, 192)

    eq_(c.a, 192)
    eq_(c.r, 0)
    eq_(c.g, 64)
    eq_(c.b, 128)

    eq_(c.to_hex_string(), '#004080c0')

def test_color_equality():

    c1 = mapnik.Color('blue')
    c2 = mapnik.Color(0,0,255)
    c3 = mapnik.Color('black')

    c3.r = 0
    c3.g = 0
    c3.b = 255
    c3.a = 255

    eq_(c1, c2)
    eq_(c1, c3)

    c1 = mapnik.Color(0, 64, 128)
    c2 = mapnik.Color(0, 64, 128)
    c3 = mapnik.Color(0, 0, 0)

    c3.r = 0
    c3.g = 64
    c3.b = 128

    eq_(c1, c2)
    eq_(c1, c3)

    c1 = mapnik.Color(0, 64, 128, 192)
    c2 = mapnik.Color(0, 64, 128, 192)
    c3 = mapnik.Color(0, 0, 0, 255)

    c3.r = 0
    c3.g = 64
    c3.b = 128
    c3.a = 192

    eq_(c1, c2)
    eq_(c1, c3)

    c1 = mapnik.Color('rgb(50%,50%,50%)')
    c2 = mapnik.Color(128, 128, 128, 255)
    c3 = mapnik.Color('#808080')
    c4 = mapnik.Color('gray')

    eq_(c1, c2)
    eq_(c1, c3)
    eq_(c1, c4)

    c1 = mapnik.Color('hsl(0, 100%, 50%)')   # red
    c2 = mapnik.Color('hsl(120, 100%, 50%)') # lime
    c3 = mapnik.Color('hsla(240, 100%, 50%, 0.5)') # semi-transparent solid blue

    eq_(c1, mapnik.Color('red'))
    eq_(c2, mapnik.Color('lime'))
    eq_(c3, mapnik.Color(0,0,255,128))

def test_rule_init():
    min_scale = 5
    max_scale = 10

    r = mapnik.Rule()

    eq_(r.name, '')
    eq_(r.min_scale, 0)
    eq_(r.max_scale, float('inf'))
    eq_(r.has_else(), False)
    eq_(r.has_also(), False)

    r = mapnik.Rule()

    r.set_else(True)
    eq_(r.has_else(), True)
    eq_(r.has_also(), False)

    r = mapnik.Rule()

    r.set_also(True)
    eq_(r.has_else(), False)
    eq_(r.has_also(), True)

    r = mapnik.Rule("Name")

    eq_(r.name, 'Name')
    eq_(r.min_scale, 0)
    eq_(r.max_scale, float('inf'))
    eq_(r.has_else(), False)
    eq_(r.has_also(), False)

    r = mapnik.Rule("Name")

    eq_(r.name, 'Name')
    eq_(r.min_scale, 0)
    eq_(r.max_scale, float('inf'))
    eq_(r.has_else(), False)
    eq_(r.has_also(), False)

    r = mapnik.Rule("Name", min_scale)

    eq_(r.name, 'Name')
    eq_(r.min_scale, min_scale)
    eq_(r.max_scale, float('inf'))
    eq_(r.has_else(), False)
    eq_(r.has_also(), False)

    r = mapnik.Rule("Name", min_scale, max_scale)

    eq_(r.name, 'Name')
    eq_(r.min_scale, min_scale)
    eq_(r.max_scale, max_scale)
    eq_(r.has_else(), False)
    eq_(r.has_also(), False)

if __name__ == "__main__":
    setup()
    run_all(eval(x) for x in dir() if x.startswith("test_"))