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import mapnik
import pytest
if hasattr(mapnik, 'Expression'):
mapnik.Filter = mapnik.Expression
map_ = '''<Map>
<Style name="s">
<Rule>
<Filter><![CDATA[(([region]>=0) and ([region]<=50))]]></Filter>
</Rule>
<Rule>
<Filter><![CDATA[([region]>=0) and ([region]<=50)]]></Filter>
</Rule>
<Rule>
<Filter>
<![CDATA[
([region] >= 0)
and
([region] <= 50)
]]>
</Filter>
</Rule>
<Rule>
<Filter>([region]>=0) and ([region]<=50)</Filter>
</Rule>
<Rule>
<Filter>
([region] >= 0)
and
([region] <= 50)
</Filter>
</Rule>
</Style>
<Style name="s2" filter-mode="first">
<Rule>
</Rule>
<Rule>
</Rule>
</Style>
</Map>'''
def test_filter_init():
m = mapnik.Map(1, 1)
mapnik.load_map_from_string(m, map_)
filters = []
filters.append(mapnik.Filter("([region]>=0) and ([region]<=50)"))
filters.append(mapnik.Filter("(([region]>=0) and ([region]<=50))"))
filters.append(mapnik.Filter("((([region]>=0) and ([region]<=50)))"))
filters.append(mapnik.Filter('((([region]>=0) and ([region]<=50)))'))
filters.append(mapnik.Filter('''((([region]>=0) and ([region]<=50)))'''))
filters.append(mapnik.Filter('''
((([region]>=0)
and
([region]<=50)))
'''))
filters.append(mapnik.Filter('''
([region]>=0)
and
([region]<=50)
'''))
filters.append(mapnik.Filter('''
([region]
>=
0)
and
([region]
<=
50)
'''))
s = m.find_style('s')
for r in s.rules:
filters.append(r.filter)
first = filters[0]
for f in filters:
assert str(first) == str(f)
s = m.find_style('s2')
assert s.filter_mode == mapnik.filter_mode.FIRST
def test_geometry_type_eval():
# clashing field called 'mapnik::geometry'
context2 = mapnik.Context()
context2.push('mapnik::geometry_type')
f = mapnik.Feature(context2, 0)
f["mapnik::geometry_type"] = 'sneaky'
expr = mapnik.Expression("[mapnik::geometry_type]")
assert expr.evaluate(f) == 0
expr = mapnik.Expression("[mapnik::geometry_type]")
context = mapnik.Context()
# no geometry
f = mapnik.Feature(context, 0)
assert expr.evaluate(f) == 0
assert mapnik.Expression("[mapnik::geometry_type]=0").evaluate(f)
# POINT = 1
f = mapnik.Feature(context, 0)
f.geometry = mapnik.Geometry.from_wkt('POINT(10 40)')
assert expr.evaluate(f) == 1
assert mapnik.Expression("[mapnik::geometry_type]=point").evaluate(f)
# LINESTRING = 2
f = mapnik.Feature(context, 0)
f.geometry = mapnik.Geometry.from_wkt('LINESTRING (30 10, 10 30, 40 40)')
assert expr.evaluate(f) == 2
assert mapnik.Expression("[mapnik::geometry_type] = linestring").evaluate(f)
# POLYGON = 3
f = mapnik.Feature(context, 0)
f.geometry = mapnik.Geometry.from_wkt(
'POLYGON ((30 10, 10 20, 20 40, 40 40, 30 10))')
assert expr.evaluate(f) == 3
assert mapnik.Expression("[mapnik::geometry_type] = polygon").evaluate(f)
# COLLECTION = 4
f = mapnik.Feature(context, 0)
geom = mapnik.Geometry.from_wkt(
'GEOMETRYCOLLECTION(POLYGON((1 1,2 1,2 2,1 2,1 1)),POINT(2 3),LINESTRING(2 3,3 4))')
f.geometry = geom
assert expr.evaluate(f) == 4
assert mapnik.Expression("[mapnik::geometry_type] = collection").evaluate(f)
def test_regex_match():
context = mapnik.Context()
context.push('name')
f = mapnik.Feature(context, 0)
f["name"] = 'test'
expr = mapnik.Expression("[name].match('test')")
assert expr.evaluate(f) # 1 == True
def test_unicode_regex_match():
context = mapnik.Context()
context.push('name')
f = mapnik.Feature(context, 0)
f["name"] = 'Québec'
expr = mapnik.Expression("[name].match('Québec')")
assert expr.evaluate(f) # 1 == True
def test_regex_replace():
context = mapnik.Context()
context.push('name')
f = mapnik.Feature(context, 0)
f["name"] = 'test'
expr = mapnik.Expression("[name].replace('(\\B)|( )','$1 ')")
assert expr.evaluate(f) == 't e s t'
def test_unicode_regex_replace_to_str():
expr = mapnik.Expression("[name].replace('(\\B)|( )','$1 ')")
assert str(expr), "[name].replace('(\\B)|( )' == '$1 ')"
def test_unicode_regex_replace():
context = mapnik.Context()
context.push('name')
f = mapnik.Feature(context, 0)
f["name"] = 'Québec'
expr = mapnik.Expression("[name].replace('(\\B)|( )','$1 ')")
# will fail if -DBOOST_REGEX_HAS_ICU is not defined
assert expr.evaluate(f) == u'Q u é b e c'
def test_float_precision():
context = mapnik.Context()
context.push('num')
f = mapnik.Feature(context, 0)
f["num1"] = 1.0000
f["num2"] = 1.0001
assert f["num1"] == 1.0000
assert f["num2"] == 1.0001
expr = mapnik.Expression("[num1] = 1.0000")
assert expr.evaluate(f)
expr = mapnik.Expression("[num1].match('1')")
assert expr.evaluate(f)
expr = mapnik.Expression("[num2] = 1.0001")
assert expr.evaluate(f)
expr = mapnik.Expression("[num2].match('1.0001')")
assert expr.evaluate(f)
def test_string_matching_on_precision():
context = mapnik.Context()
context.push('num')
f = mapnik.Feature(context, 0)
f["num"] = "1.0000"
assert f["num"] == "1.0000"
expr = mapnik.Expression("[num].match('.*(^0|00)$')")
assert expr.evaluate(f)
def test_creation_of_null_value():
context = mapnik.Context()
context.push('nv')
f = mapnik.Feature(context, 0)
f["nv"] = None
assert f["nv"] == None
assert f["nv"] is None
# test boolean
f["nv"] = 0
assert f["nv"] == 0
assert f["nv"] is not None
def test_creation_of_bool():
context = mapnik.Context()
context.push('bool')
f = mapnik.Feature(context, 0)
f["bool"] = True
assert f["bool"]
# TODO - will become int of 1 do to built in boost python conversion
# https://github.com/mapnik/mapnik/issues/1873
assert isinstance(f["bool"], bool) or isinstance(f["bool"], int)
f["bool"] = False
assert f["bool"] == False
assert isinstance(f["bool"], bool) or isinstance(f["bool"], int)
# test NoneType
f["bool"] = None
assert f["bool"] == None
assert not isinstance(f["bool"], bool) or isinstance(f["bool"], int)
# test integer
f["bool"] = 0
assert f["bool"] == 0
# https://github.com/mapnik/mapnik/issues/1873
# ugh, boost_python's built into converter does not work right
# assert isinstance(f["bool"],bool) == False
null_equality = [
['hello', False, str],
[u'', False, str],
[0, False, int],
[123, False, int],
[0.0, False, float],
[123.123, False, float],
[.1, False, float],
# TODO - should become bool: https://github.com/mapnik/mapnik/issues/1873
[False, False, int],
# TODO - should become bool: https://github.com/mapnik/mapnik/issues/1873
[True, False, int],
[None, True, None],
[2147483648, False, int],
[922337203685477580, False, int]
]
def test_expressions_with_null_equality():
for eq in null_equality:
context = mapnik.Context()
f = mapnik.Feature(context, 0)
f["prop"] = eq[0]
assert f["prop"] == eq[0]
if eq[0] is None:
assert f["prop"] is None
else:
assert isinstance(f['prop'], eq[2]), '%s is not an instance of %s' % (f['prop'], eq[2])
expr = mapnik.Expression("[prop] = null")
assert expr.evaluate(f) == eq[1]
expr = mapnik.Expression("[prop] is null")
assert expr.evaluate(f) == eq[1]
def test_expressions_with_null_equality2():
for eq in null_equality:
context = mapnik.Context()
f = mapnik.Feature(context, 0)
f["prop"] = eq[0]
assert f["prop"] == eq[0]
if eq[0] is None:
assert f["prop"] is None
else:
assert isinstance(f['prop'], eq[2]), '%s is not an instance of %s' % (f['prop'], eq[2])
# TODO - support `is not` syntax:
# https://github.com/mapnik/mapnik/issues/796
expr = mapnik.Expression("not [prop] is null")
assert not expr.evaluate(f) == eq[1]
# https://github.com/mapnik/mapnik/issues/1642
expr = mapnik.Expression("[prop] != null")
assert not expr.evaluate(f) == eq[1]
truthyness = [
[u'hello', True, str],
[u'', False, str],
[0, False, int],
[123, True, int],
[0.0, False, float],
[123.123, True, float],
[.1, True, float],
# TODO - should become bool: https://github.com/mapnik/mapnik/issues/1873
[False, False, int],
# TODO - should become bool: https://github.com/mapnik/mapnik/issues/1873
[True, True, int],
[None, False, None],
[2147483648, True, int],
[922337203685477580, True, int]
]
def test_expressions_for_thruthyness():
context = mapnik.Context()
for eq in truthyness:
f = mapnik.Feature(context, 0)
f["prop"] = eq[0]
assert f["prop"] == eq[0]
if eq[0] is None:
assert f["prop"] is None
else:
assert isinstance(f['prop'], eq[2]), '%s is not an instance of %s' % (f['prop'], eq[2])
expr = mapnik.Expression("[prop]")
assert expr.to_bool(f) == eq[1]
expr = mapnik.Expression("not [prop]")
assert not expr.to_bool(f) == eq[1]
expr = mapnik.Expression("! [prop]")
assert not expr.to_bool(f) == eq[1]
# also test if feature does not have property at all
f2 = mapnik.Feature(context, 1)
# no property existing will return value_null since
# https://github.com/mapnik/mapnik/commit/562fada9d0f680f59b2d9f396c95320a0d753479#include/mapnik/feature.hpp
assert f2["prop"] is None
expr = mapnik.Expression("[prop]")
assert expr.evaluate(f2) == None
assert expr.to_bool(f2) == False
# https://github.com/mapnik/mapnik/issues/1859
def test_if_null_and_empty_string_are_equal():
context = mapnik.Context()
f = mapnik.Feature(context, 0)
f["empty"] = u""
f["null"] = None
# ensure base assumptions are good
assert mapnik.Expression("[empty] = ''").to_bool(f)
assert mapnik.Expression("[null] = null").to_bool(f)
assert not mapnik.Expression("[empty] != ''").to_bool(f)
assert not mapnik.Expression("[null] != null").to_bool(f)
# now test expected behavior
assert not mapnik.Expression("[null] = ''").to_bool(f)
assert not mapnik.Expression("[empty] = null").to_bool(f)
assert mapnik.Expression("[empty] != null").to_bool(f)
# this one is the back compatibility shim
assert not mapnik.Expression("[null] != ''").to_bool(f)
def test_filtering_nulls_and_empty_strings():
context = mapnik.Context()
f = mapnik.Feature(context, 0)
f["prop"] = u"hello"
assert f["prop"] == u"hello"
assert mapnik.Expression("[prop]").to_bool(f)
assert not mapnik.Expression("! [prop]").to_bool(f)
assert mapnik.Expression("[prop] != null").to_bool(f)
assert mapnik.Expression("[prop] != ''").to_bool(f)
assert mapnik.Expression("[prop] != null and [prop] != ''").to_bool(f)
assert mapnik.Expression("[prop] != null or [prop] != ''").to_bool(f)
f["prop2"] = u""
assert f["prop2"] == u""
assert not mapnik.Expression("[prop2]").to_bool(f)
assert mapnik.Expression("! [prop2]").to_bool(f)
assert mapnik.Expression("[prop2] != null").to_bool(f)
assert not mapnik.Expression("[prop2] != ''").to_bool(f)
assert mapnik.Expression("[prop2] = ''").to_bool(f)
assert mapnik.Expression("[prop2] != null or [prop2] != ''").to_bool(f)
assert not mapnik.Expression("[prop2] != null and [prop2] != ''").to_bool(f)
f["prop3"] = None
assert f["prop3"] == None
assert not mapnik.Expression("[prop3]").to_bool(f)
assert mapnik.Expression("! [prop3]").to_bool(f)
assert not mapnik.Expression("[prop3] != null").to_bool(f)
assert mapnik.Expression("[prop3] = null").to_bool(f)
# https://github.com/mapnik/mapnik/issues/1859
#assert mapnik.Expression("[prop3] != ''").to_bool(f) == True
assert not mapnik.Expression("[prop3] != ''").to_bool(f)
assert not mapnik.Expression("[prop3] = ''").to_bool(f)
# https://github.com/mapnik/mapnik/issues/1859
#assert mapnik.Expression("[prop3] != null or [prop3] != ''").to_bool(f) == True
assert not mapnik.Expression("[prop3] != null or [prop3] != ''").to_bool(f)
assert not mapnik.Expression("[prop3] != null and [prop3] != ''").to_bool(f)
# attr not existing should behave the same as prop3
assert not mapnik.Expression("[prop4]").to_bool(f)
assert mapnik.Expression("! [prop4]").to_bool(f)
assert not mapnik.Expression("[prop4] != null").to_bool(f)
assert mapnik.Expression("[prop4] = null").to_bool(f)
# https://github.com/mapnik/mapnik/issues/1859
##assert mapnik.Expression("[prop4] != ''").to_bool(f) == True
assert not mapnik.Expression("[prop4] != ''").to_bool(f)
assert not mapnik.Expression("[prop4] = ''").to_bool(f)
# https://github.com/mapnik/mapnik/issues/1859
##assert mapnik.Expression("[prop4] != null or [prop4] != ''").to_bool(f) == True
assert not mapnik.Expression("[prop4] != null or [prop4] != ''").to_bool(f)
assert not mapnik.Expression("[prop4] != null and [prop4] != ''").to_bool(f)
f["prop5"] = False
assert f["prop5"] == False
assert not mapnik.Expression("[prop5]").to_bool(f)
assert mapnik.Expression("! [prop5]").to_bool(f)
assert mapnik.Expression("[prop5] != null").to_bool(f)
assert not mapnik.Expression("[prop5] = null").to_bool(f)
assert mapnik.Expression("[prop5] != ''").to_bool(f)
assert not mapnik.Expression("[prop5] = ''").to_bool(f)
assert mapnik.Expression("[prop5] != null or [prop5] != ''").to_bool(f)
assert mapnik.Expression("[prop5] != null and [prop5] != ''").to_bool(f)
# note, we need to do [prop5] != 0 here instead of false due to this bug:
# https://github.com/mapnik/mapnik/issues/1873
assert not mapnik.Expression("[prop5] != null and [prop5] != '' and [prop5] != 0").to_bool(f)
# https://github.com/mapnik/mapnik/issues/1872
def test_falseyness_comparision():
context = mapnik.Context()
f = mapnik.Feature(context, 0)
f["prop"] = 0
assert not mapnik.Expression("[prop]").to_bool(f)
assert mapnik.Expression("[prop] = false").to_bool(f)
assert mapnik.Expression("not [prop] != false").to_bool(f)
assert mapnik.Expression("not [prop] = true").to_bool(f)
assert not mapnik.Expression("[prop] = true").to_bool(f)
assert mapnik.Expression("[prop] != true").to_bool(f)
# https://github.com/mapnik/mapnik/issues/1806, fixed by
# https://github.com/mapnik/mapnik/issues/1872
def test_truthyness_comparision():
context = mapnik.Context()
f = mapnik.Feature(context, 0)
f["prop"] = 1
assert mapnik.Expression("[prop]").to_bool(f) == True
assert mapnik.Expression("[prop] = false").to_bool(f) == False
assert mapnik.Expression("not [prop] != false").to_bool(f) == False
assert mapnik.Expression("not [prop] = true").to_bool(f) == False
assert mapnik.Expression("[prop] = true").to_bool(f) == True
assert mapnik.Expression("[prop] != true").to_bool(f) == False
def test_division_by_zero():
expr = mapnik.Expression('[a]/[b]')
c = mapnik.Context()
c.push('a')
c.push('b')
f = mapnik.Feature(c, 0)
f['a'] = 1
f['b'] = 0
assert expr.evaluate(f) == None
def test_invalid_syntax1():
with pytest.raises(RuntimeError):
mapnik.Expression('abs()')
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