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# Copyright (c) 2002 by Intevation GmbH |
# Copyright (c) 2002, 2003 by Intevation GmbH |
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# Authors: |
# Authors: |
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# Bernhard Herzog <[email protected]> |
# Bernhard Herzog <[email protected]> |
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# |
# |
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# $Id$ |
# $Id$ |
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import unittest |
import unittest |
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import os |
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import xmlsupport |
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import support |
import support |
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support.initthuban() |
support.initthuban() |
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from Thuban.Model.proj import Projection, ProjFile |
from Thuban import _ |
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from Thuban.Model.proj import Projection, ProjFile, \ |
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PROJ_UNITS_METERS, PROJ_UNITS_DEGREES |
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from Thuban.Model.messages import PROJECTION_ADDED, PROJECTION_REMOVED, \ |
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PROJECTION_REPLACED |
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import Thuban.Model.resource as resource |
import Thuban.Model.resource as resource |
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from test_save import sax_eventlist |
from xmlsupport import sax_eventlist |
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from xml.sax import SAXParseException |
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class TestProjection(unittest.TestCase, support.FloatComparisonMixin): |
class TestProjection(unittest.TestCase, support.FloatComparisonMixin): |
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def test(self): |
def test(self): |
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"""Test Projection""" |
"""Test Projection""" |
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proj = Projection(["zone=26", "proj=utm", "ellps=clrk66"]) |
params = ["zone=26", "proj=utm", "ellps=clrk66"] |
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self.assertEquals(proj.params, ["zone=26", "proj=utm", "ellps=clrk66"]) |
proj = Projection(params) |
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self.assertEquals(proj.params, params) |
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# It's not clear whether this value is really the correct one |
# It's not clear whether this value is really the correct one |
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# but a test failure here probably still means a bug somewhere |
# but a test failure here probably still means a bug somewhere |
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3875381.8535437919, 252962.10480170773), |
3875381.8535437919, 252962.10480170773), |
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epsilon = 1e-5) |
epsilon = 1e-5) |
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# GetName() |
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self.assertEquals(proj.GetName(), _("Unknown")) |
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# GetParameter() |
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self.assertEquals(proj.GetParameter("zone"), "26") |
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self.assertEquals(proj.GetParameter("proj"), "utm") |
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self.assertEquals(proj.GetParameter("ellps"), "clrk66") |
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self.assertEquals(proj.GetParameter("hallo"), "") |
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# GetAllParameters() |
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self.assertEquals(proj.GetAllParameters(), params) |
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# GetName() |
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proj = Projection(params, "MyName") |
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self.assertEquals(proj.GetName(), "MyName") |
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def test_get_parameter_without_equals_sign(self): |
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"""Test Projection.GetParameter() for a parameter without '=' sign""" |
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proj = Projection(["proj=utm", "zone=34", "south", "ellps=clrk66"]) |
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# The Projection class pretends that for parameters specified |
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# without a value the value is the same as the parameter name. |
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self.assertEquals(proj.GetParameter("south"), "south") |
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def test_get_projection_units_geo(self): |
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"""Test Projection.GetProjectedUnits() for geographic projection. |
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Test for the alias 'longlat' as well. |
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""" |
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proj = Projection(["proj=latlong", "to_meter=0.017453292519943295", |
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"ellps=clrk66"]) |
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self.assertEquals(proj.GetProjectedUnits(), PROJ_UNITS_DEGREES) |
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proj = Projection(["proj=longlat", "to_meter=0.017453292519943295", |
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"ellps=clrk66"]) |
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self.assertEquals(proj.GetProjectedUnits(), PROJ_UNITS_DEGREES) |
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sample_projfile = '''\ |
def test_get_projection_units_normal(self): |
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<?xml version="1.0" encoding="UTF-8"?> |
"""Test Projection.GetProjectedUnits() for normal projection""" |
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<!DOCTYPE projfile SYSTEM "thuban.dtd"> |
proj = Projection(["zone=26", "proj=utm", "ellps=clrk66"]) |
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<projectionlist> |
self.assertEquals(proj.GetProjectedUnits(), PROJ_UNITS_METERS) |
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<projection name="Transverse Mercartor"> |
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<parameter value="proj=tmerc"/> |
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<parameter value="ellps=clrk66"/> |
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<parameter value="lat_0=90w"/> |
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<parameter value="lon_0=90w"/> |
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<parameter value="k=1"/> |
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</projection> |
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<projection name="Transverse Mercartor"> |
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<parameter value="proj=tmerc"/> |
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<parameter value="ellps=clrk66"/> |
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<parameter value="lat_0=30w"/> |
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<parameter value="lon_0=30w"/> |
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<parameter value="k=1"/> |
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</projection> |
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<projection name="Universal Transverse Mercartor"> |
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<parameter value="proj=utm"/> |
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<parameter value="ellps=clrk66"/> |
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<parameter value="zone=1"/> |
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</projection> |
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</projectionlist> |
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''' |
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sample_projfile_data = [("Transverse Mercartor", ["proj=tmerc", |
def test_label(self): |
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"ellps=clrk66", |
"""Test Projection.Label() without epsg""" |
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"lat_0=90w", |
proj = Projection(["zone=26", "proj=utm", "ellps=clrk66"], |
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"lon_0=90w", |
name = "My Projection") |
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"k=1"]), |
self.assertEquals(proj.Label(), "My Projection") |
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("Transverse Mercartor", ["proj=tmerc", |
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"ellps=clrk66", |
def test_label_epsg(self): |
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"lat_0=30w", |
"""Test Projection.Label() with epsg""" |
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"lon_0=30w", |
proj = Projection(["zone=26", "proj=utm", "ellps=clrk66"], |
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"k=1"]), |
name = "My Projection", epsg="42") |
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("Universal Transverse Mercartor", ["proj=utm", |
self.assertEquals(proj.Label(), "EPSG 42 My Projection") |
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"ellps=clrk66", |
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"zone=1"])] |
def test_epsgcode_for_non_epsg_projection(self): |
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"""Test Projection.EPSGCode() without epsg""" |
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proj = Projection(["zone=26", "proj=utm", "ellps=clrk66"], |
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name = "My Projection") |
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self.assertEquals(proj.EPSGCode(), None) |
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def test_epsgcode_for_real_epsg_projection(self): |
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"""Test Projection.EPSGCode() with epsg""" |
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proj = Projection(["zone=26", "proj=utm", "ellps=clrk66"], |
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name = "My Projection", epsg="42") |
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self.assertEquals(proj.EPSGCode(), "42") |
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class TestProjFileSimple: |
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def test_init(self): |
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"""Test ProjFile coinstructor""" |
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proj_file = ProjFile("some_filename") |
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self.assertEquals(proj_file.GetFilename(), "some_filename") |
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self.assertEquals(len(proj_file.GetProjections()), 0) |
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def test_set_filename(self): |
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"""Test ProjFile.SetFilename()""" |
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proj_file = ProjFile("some_filename") |
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proj.SetFilename("other_name") |
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self.assertEquals(proj_file.GetFilename(), "other_name") |
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class TestProjFile(unittest.TestCase, support.SubscriberMixin): |
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"""Test cases for ProjFile objects""" |
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def setUp(self): |
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self.clear_messages() |
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self.proj0 = Projection(["proj=tmerc", "ellps=clrk66"]) |
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self.proj1 = Projection(["proj=utm", "ellps=clrk66"]) |
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self.proj2 = Projection(["proj=lcc", "ellps=clrk66", |
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"lat_1=0", "lat_2=20"]) |
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self.proj_file = ProjFile("some_filename") |
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for msg in [PROJECTION_ADDED, PROJECTION_REMOVED, PROJECTION_REPLACED]: |
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self.proj_file.Subscribe(msg, self.subscribe_with_params, msg) |
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def tearDown(self): |
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self.clear_messages() |
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self.proj_file.Destroy() |
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def test_add_remove(self): |
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"""Test ProjFile.Add() and ProjFile.Remove()""" |
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self.proj_file.Add(self.proj0) |
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self.proj_file.Add(self.proj1) |
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self.assertEquals(self.proj_file.GetProjections(), |
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[self.proj0, self.proj1]) |
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self.check_messages([(self.proj0, PROJECTION_ADDED), |
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(self.proj1, PROJECTION_ADDED)]) |
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self.clear_messages() |
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self.proj_file.Remove(self.proj0) |
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self.assertEquals(self.proj_file.GetProjections(), [self.proj1]) |
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self.check_messages([(self.proj0, PROJECTION_REMOVED)]) |
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def test_remove_non_existing(self): |
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"""Test ProjFile.Remove(<proj not in projfile>)""" |
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self.assertRaises(ValueError, self.proj_file.Remove, self.proj0) |
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# Nothing happened, so no messages should have been sent |
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self.check_messages([]) |
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def test_replace(self): |
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"""Test ProjFile.Replace()""" |
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self.proj_file.Add(self.proj0) |
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self.proj_file.Add(self.proj1) |
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self.clear_messages() |
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# Replace() |
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self.proj_file.Replace(self.proj0, self.proj2) |
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self.assertEquals(self.proj_file.GetProjections(), |
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[self.proj2, self.proj1]) |
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self.check_messages([(self.proj0, self.proj2, PROJECTION_REPLACED)]) |
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def test_replace_non_existing(self): |
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"""Test ProjFile.Replace(<proj not in projfile>, <some proj>)""" |
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self.proj_file.Add(self.proj0) |
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self.proj_file.Add(self.proj1) |
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self.clear_messages() |
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self.assertRaises(ValueError, |
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self.proj_file.Replace, self.proj2, self.proj0) |
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# All projections should still be there |
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self.assertEquals(self.proj_file.GetProjections(), |
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[self.proj0, self.proj1]) |
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# Nothing happened, so no messages should have been sent |
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self.check_messages([]) |
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class ProjFileTest(unittest.TestCase, support.FileTestMixin, |
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xmlsupport.ValidationTest): |
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"""Base class for the proj file tests that read or write files""" |
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def filename(self): |
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"""Return the filename for the test""" |
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return self.temp_file_name(self.id() + ".proj") |
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sample_projfile2 = '''\ |
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<?xml version="1.0" encoding="UTF-8"?> |
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<!DOCTYPE projfile SYSTEM "thuban.dtd"> |
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<projectionlist> |
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</projectionlist> |
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''' |
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sample_projfile_data2 = [] |
class ProjFileReadTests(ProjFileTest): |
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class TestProjFile(unittest.TestCase, support.FileTestMixin): |
"""Test read ProjFile objects from files |
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"""Test cases for reading and writing projection files. |
The files only cover error handling and the system projection file. |
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""" |
""" |
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def compare_xml(self, xml1, xml2): |
def test_read_non_existing_file(self): |
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self.assertEquals(sax_eventlist(xml1), sax_eventlist(xml2)) |
"""Test read_proj_file with non-existing file""" |
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self.assertRaises(IOError, |
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resource.read_proj_file, |
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self.temp_file_name("nonexistent.proj")) |
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def test_read_unreadable_file(self): |
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"""Test read_proj_file with unreadable file |
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As currently written this only works on unix-like systems and |
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not e.g. on MS Windows. |
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""" |
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filename = self.filename() |
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file = open(filename, "w") |
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file.close() |
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os.chmod(filename, 0200) # write-only |
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self.assertRaises(IOError, resource.read_proj_file, filename) |
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def test_read_empty_file(self): |
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"""Test read_proj_file with empty file""" |
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filename = self.filename() |
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file = open(filename, "w") |
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file.close() |
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self.assertRaises(SAXParseException, resource.read_proj_file, filename) |
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def testRead(self): |
def test_get_system_proj_file(self): |
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"""Test ReadProjFile""" |
"""Test resource.get_system_proj_file(DEFAULT_PROJ_FILE) |
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self.doTestRead(sample_projfile_data, sample_projfile) |
This is primarily to test whether the system proj file contains |
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self.doTestRead(sample_projfile_data2, sample_projfile2) |
invalid projection paramers and whether the proj file is not |
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empty |
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""" |
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projfile, warnings\ |
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= resource.get_system_proj_file(resource.DEFAULT_PROJ_FILE) |
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self.assertEquals(warnings, []) |
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self.assert_(len(projfile.GetProjections()) > 0) |
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# see whether it got cached and we get the same projfile object |
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# when we read the file again |
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projfile2, warnings \ |
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= resource.get_system_proj_file(resource.DEFAULT_PROJ_FILE) |
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self.assert_(projfile is projfile2) |
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def testWrite(self): |
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"""Test WriteProjFile""" |
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self.doTestWrite(sample_projfile_data, sample_projfile) |
class WriteProjFileTests(ProjFileTest): |
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self.doTestWrite(sample_projfile_data2, sample_projfile2) |
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def doTestWrite(self, data, expected): |
"""Test cases for writing proj files""" |
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filename = self.temp_file_name("projfile.proj") |
def compare_xml(self, xml1, xml2): |
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self.assertEquals(sax_eventlist(xml1), sax_eventlist(xml2)) |
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pf = ProjFile(filename) |
def doTestWrite(self, projfile, expected): |
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for proj in data: |
filename = self.filename() |
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pf.Add(Projection(proj[1], proj[0])) |
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resource.WriteProjFile(pf) |
resource.write_proj_file(projfile) |
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file = open(filename) |
file = open(filename) |
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written_contents = file.read() |
written_contents = file.read() |
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file.close() |
file.close() |
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self.compare_xml(written_contents, expected) |
self.compare_xml(written_contents, expected) |
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self.validate_data(written_contents) |
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self.validate_data(expected) |
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def doTestRead(self, data, input): |
def test_write(self): |
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"""Test write_proj_file""" |
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pf = ProjFile(self.filename()) |
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pf.Add(Projection(['proj=tmerc', 'ellps=clrk66', |
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'lat_0=90w', 'lon_0=90w', 'k=1'], |
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"Transverse Mercator",)) |
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pf.Add(Projection(["proj=tmerc", |
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"lat_0=0.000000000", "lon_0=-62.000000000", |
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"k=0.999500", "x_0=400000.000", "y_0=0.000", |
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"ellps=clrk80", "units=m"], |
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"Anguilla 1957 / British West Indies Grid", |
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epsg="200")) |
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file_contents = '''<?xml version="1.0" encoding="UTF-8"?> |
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<!DOCTYPE projectionlist SYSTEM "projfile.dtd"> |
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<projectionlist> |
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<projection name="Transverse Mercator"> |
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<parameter value="proj=tmerc"/> |
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<parameter value="ellps=clrk66"/> |
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<parameter value="lat_0=90w"/> |
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<parameter value="lon_0=90w"/> |
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<parameter value="k=1"/> |
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</projection> |
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<projection epsg="200" |
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name="Anguilla 1957 / British West Indies Grid"> |
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<parameter value="proj=tmerc"/> |
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<parameter value="lat_0=0.000000000"/> |
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<parameter value="lon_0=-62.000000000"/> |
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<parameter value="k=0.999500"/> |
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<parameter value="x_0=400000.000"/> |
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<parameter value="y_0=0.000"/> |
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<parameter value="ellps=clrk80"/> |
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<parameter value="units=m"/> |
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</projection> |
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</projectionlist> |
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''' |
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self.doTestWrite(pf, file_contents) |
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def test_write_empty_file(self): |
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"""Test write empty ProjFile""" |
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pf = ProjFile(self.filename()) |
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file_contents = '''<?xml version="1.0" encoding="UTF-8"?> |
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<!DOCTYPE projectionlist SYSTEM "projfile.dtd"> |
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<projectionlist> |
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</projectionlist> |
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''' |
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self.doTestWrite(pf, file_contents) |
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class ProjFileLoadTestCase(support.FileLoadTestCase): |
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"""Base class for the test cases that read specific test files""" |
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file_extension = ".proj" |
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def tearDown(self): |
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"""Clear the cache explicitly""" |
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resource.clear_proj_file_cache() |
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filename = self.temp_file_name("projfile.proj") |
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file = open(filename, "w") |
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file.write(input) |
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file.close() |
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pf = resource.ReadProjFile(filename) |
class TestLoadingProjFile(ProjFileLoadTestCase): |
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eq = self.assertEquals |
file_contents = '''\ |
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<?xml version="1.0" encoding="UTF-8"?> |
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<!DOCTYPE projectionlist SYSTEM "projfile.dtd"> |
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<projectionlist> |
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<projection name="Transverse Mercator"> |
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<parameter value="proj=tmerc"/> |
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<parameter value="ellps=clrk66"/> |
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<parameter value="lat_0=90w"/> |
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<parameter value="lon_0=90w"/> |
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<parameter value="k=1"/> |
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</projection> |
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<projection epsg="200" name="Anguilla 1957 / British West Indies Grid"> |
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<parameter value="proj=tmerc"/> |
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<parameter value="lat_0=0.000000000"/> |
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<parameter value="lon_0=-62.000000000"/> |
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<parameter value="k=0.999500"/> |
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<parameter value="x_0=400000.000"/> |
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<parameter value="y_0=0.000"/> |
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<parameter value="ellps=clrk80"/> |
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<parameter value="units=m"/> |
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</projection> |
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</projectionlist> |
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''' |
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def check_projection(self, proj, label, parameters): |
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"""Check the values of the proj's label and parameters""" |
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self.assertEquals(proj.Label(), label) |
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params = proj.GetAllParameters()[:] |
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params.sort() |
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self.assertEquals(params, parameters) |
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eq(pf.GetFileName(), filename) |
def test(self): |
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projfile, warnings = resource.read_proj_file(self.filename()) |
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# no warnings |
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self.assertEquals(warnings, []) |
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381 |
|
# There are two projections |
382 |
|
projs = projfile.GetProjections() |
383 |
|
self.assertEquals(len(projs), 2) |
384 |
|
|
385 |
|
self.check_projection(projs[0], |
386 |
|
"Transverse Mercator", |
387 |
|
['ellps=clrk66', 'k=1', 'lat_0=90w', 'lon_0=90w', |
388 |
|
'proj=tmerc']) |
389 |
|
self.check_projection(projs[1], |
390 |
|
"EPSG 200 Anguilla 1957 / British West Indies Grid", |
391 |
|
["ellps=clrk80", "k=0.999500", |
392 |
|
"lat_0=0.000000000", "lon_0=-62.000000000", |
393 |
|
"proj=tmerc", "units=m", |
394 |
|
"x_0=400000.000", "y_0=0.000"]) |
395 |
|
|
396 |
|
def test_caching(self): |
397 |
|
# test whether the projfile cache works |
398 |
|
projfile, warnings = resource.read_proj_file(self.filename()) |
399 |
|
projfile2, warnings = resource.read_proj_file(self.filename()) |
400 |
|
|
401 |
|
# Both projfiles should be the same object |
402 |
|
self.assert_(projfile2 is projfile) |
403 |
|
|
404 |
|
# If we clear the cache we should get a new one. |
405 |
|
resource.clear_proj_file_cache() |
406 |
|
projfile3, warnings = resource.read_proj_file(self.filename()) |
407 |
|
self.assert_(projfile3 is not projfile) |
408 |
|
|
409 |
|
|
410 |
|
class TestLoadingProjFileWithEmptyProjectionlist(ProjFileLoadTestCase): |
411 |
|
|
412 |
|
file_contents = '''\ |
413 |
|
<?xml version="1.0" encoding="UTF-8"?> |
414 |
|
<!DOCTYPE projectionlist SYSTEM "projfile.dtd"> |
415 |
|
<projectionlist> |
416 |
|
</projectionlist> |
417 |
|
''' |
418 |
|
|
419 |
|
def test(self): |
420 |
|
projfile, warnings = resource.read_proj_file(self.filename()) |
421 |
|
# no warnings |
422 |
|
self.assertEquals(warnings, []) |
423 |
|
|
424 |
for proj, d in zip(pf.GetProjections(), data): |
# There are no projections |
425 |
eq(proj.GetName(), d[0]) |
self.assertEquals(len(projfile.GetProjections()), 0) |
426 |
for param in proj.GetParameters(): |
|
427 |
self.assert_(param in d[1]) |
|
428 |
|
class TestProjFileWithInvalidParameters(ProjFileLoadTestCase): |
429 |
|
|
430 |
|
file_contents = '''\ |
431 |
|
<?xml version="1.0" encoding="UTF-8"?> |
432 |
|
<!DOCTYPE projectionlist SYSTEM "projfile.dtd"> |
433 |
|
<projectionlist> |
434 |
|
<projection name="Universal Transverse Mercator"> |
435 |
|
<parameter value="proj=utm"/> |
436 |
|
<parameter value="ellps=clrk66"/> |
437 |
|
<!-- an invalid zone number to trigger the parameter checking |
438 |
|
in the proj library --> |
439 |
|
<parameter value="zone=1000"/> |
440 |
|
</projection> |
441 |
|
<projection name="Transverse Mercator"> |
442 |
|
<parameter value="proj=tmerc"/> |
443 |
|
<parameter value="ellps=clrk66"/> |
444 |
|
<parameter value="lat_0=90w"/> |
445 |
|
<parameter value="lon_0=90w"/> |
446 |
|
<parameter value="k=1"/> |
447 |
|
</projection> |
448 |
|
</projectionlist> |
449 |
|
''' |
450 |
|
|
451 |
|
def setUp(self): |
452 |
|
support.FileLoadTestCase.setUp(self) |
453 |
|
|
454 |
|
def test(self): |
455 |
|
"""Test reading a proj file with invalid parameters""" |
456 |
|
projfile, warnings = resource.read_proj_file(self.filename()) |
457 |
|
projs = projfile.GetProjections() |
458 |
|
self.assertEquals(len(projs), 1) |
459 |
|
params = projs[0].GetAllParameters()[:] |
460 |
|
params.sort() |
461 |
|
self.assertEquals(params, ['ellps=clrk66', 'k=1', 'lat_0=90w', |
462 |
|
'lon_0=90w', 'proj=tmerc']) |
463 |
|
self.assertEquals(warnings, |
464 |
|
['Error in projection "Universal Transverse Mercator":' |
465 |
|
' invalid UTM zone number']) |
466 |
|
|
467 |
|
|
468 |
if __name__ == "__main__": |
if __name__ == "__main__": |
469 |
unittest.main() |
support.run_tests() |