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support.initthuban() |
support.initthuban() |
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from Thuban import _ |
from Thuban import _ |
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from Thuban.Model.proj import Projection, ProjFile |
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 xmlsupport import sax_eventlist |
from xmlsupport import sax_eventlist |
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proj = Projection(params, "MyName") |
proj = Projection(params, "MyName") |
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self.assertEquals(proj.GetName(), "MyName") |
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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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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def test_get_projection_units_normal(self): |
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"""Test Projection.GetProjectedUnits() for normal projection""" |
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proj = Projection(["zone=26", "proj=utm", "ellps=clrk66"]) |
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self.assertEquals(proj.GetProjectedUnits(), PROJ_UNITS_METERS) |
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def test_label(self): |
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"""Test Projection.Label() 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.Label(), "My Projection") |
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def test_label_epsg(self): |
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"""Test Projection.Label() 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.Label(), "EPSG 42 My Projection") |
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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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sample_projfile = '''\ |
# Replace() |
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<?xml version="1.0" encoding="UTF-8"?> |
self.proj_file.Replace(self.proj0, self.proj2) |
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<!DOCTYPE projectionlist SYSTEM "projfile.dtd"> |
self.assertEquals(self.proj_file.GetProjections(), |
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<projectionlist> |
[self.proj2, self.proj1]) |
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<projection name="Transverse Mercator"> |
self.check_messages([(self.proj0, self.proj2, PROJECTION_REPLACED)]) |
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<parameter value="proj=tmerc"/> |
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<parameter value="ellps=clrk66"/> |
def test_replace_non_existing(self): |
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<parameter value="lat_0=90w"/> |
"""Test ProjFile.Replace(<proj not in projfile>, <some proj>)""" |
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<parameter value="lon_0=90w"/> |
self.proj_file.Add(self.proj0) |
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<parameter value="k=1"/> |
self.proj_file.Add(self.proj1) |
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</projection> |
self.clear_messages() |
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<projection name="Transverse Mercator"> |
self.assertRaises(ValueError, |
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<parameter value="proj=tmerc"/> |
self.proj_file.Replace, self.proj2, self.proj0) |
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<parameter value="ellps=clrk66"/> |
# All projections should still be there |
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<parameter value="lat_0=30w"/> |
self.assertEquals(self.proj_file.GetProjections(), |
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<parameter value="lon_0=30w"/> |
[self.proj0, self.proj1]) |
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<parameter value="k=1"/> |
# Nothing happened, so no messages should have been sent |
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</projection> |
self.check_messages([]) |
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<projection name="Universal Transverse Mercator"> |
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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 Mercator", ["proj=tmerc", |
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"ellps=clrk66", |
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"lat_0=90w", |
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"lon_0=90w", |
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"k=1"]), |
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("Transverse Mercator", ["proj=tmerc", |
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"ellps=clrk66", |
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"lat_0=30w", |
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"lon_0=30w", |
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"k=1"]), |
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("Universal Transverse Mercator", ["proj=utm", |
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"ellps=clrk66", |
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"zone=1"])] |
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sample_projfile2 = '''\ |
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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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</projectionlist> |
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''' |
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sample_projfile_data2 = [] |
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class TestProjFile(unittest.TestCase, support.FileTestMixin, |
class ProjFileTest(unittest.TestCase, support.FileTestMixin, |
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xmlsupport.ValidationTest): |
xmlsupport.ValidationTest): |
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"""Test cases for reading and writing projection files. |
"""Base class for the proj file tests that read or write files""" |
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""" |
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def compare_xml(self, xml1, xml2): |
def filename(self): |
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self.assertEquals(sax_eventlist(xml1), sax_eventlist(xml2)) |
"""Return the filename for the test""" |
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return self.temp_file_name(self.id() + ".proj") |
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def test(self): |
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"""Test ProjFile""" |
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proj0 = Projection(["proj=tmerc", "ellps=clrk66"]) |
class ProjFileReadTests(ProjFileTest): |
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proj1 = Projection(["proj=utm", "ellps=clrk66"]) |
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proj2 = Projection(["proj=lcc", "ellps=clrk66", |
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"lat_1=0", "lat_2=20"]) |
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eq = self.assertEquals |
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# |
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# __init__() |
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# GetFilename() |
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# SetFilename() |
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# |
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for name in ["", "hello_world"]: |
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projFile = ProjFile(name) |
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eq(projFile.GetFilename(), name) |
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projFile.SetFilename("XXX") |
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projFile.SetFilename(name) |
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eq(projFile.GetFilename(), name) |
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# initial number of projections should be 0 |
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eq(len(projFile.GetProjections()), 0) |
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# |
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# Add() |
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# Remove() |
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# |
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projFile.Add(proj0) |
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eq(len(projFile.GetProjections()), 1) |
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projFile.Remove(proj0) |
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eq(len(projFile.GetProjections()), 0) |
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# try to remove something that doesn't exist |
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self.assertRaises(ValueError, projFile.Remove, None) |
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self.assertRaises(ValueError, projFile.Remove, proj0) |
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projFile.Add(proj0) |
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projFile.Add(proj1) |
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projFile.Add(proj2) |
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eq(len(projFile.GetProjections()), 3) |
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# GetProjections() -- tests order |
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projs = projFile.GetProjections() |
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eq(projs[0], proj0) |
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eq(projs[1], proj1) |
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eq(projs[2], proj2) |
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projFile.Remove(proj2) |
"""Test read ProjFile objects from files |
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projFile.Remove(proj1) |
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# Replace() |
The files only cover error handling and the system projection file. |
213 |
projFile.Replace(proj0, proj1) |
""" |
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projs = projFile.GetProjections() |
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eq(projs[0], proj1) |
def test_read_non_existing_file(self): |
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"""Test read_proj_file with non-existing file""" |
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# replace a non-existent projection |
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self.assertRaises(ValueError, projFile.Replace, None, proj2) |
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self.assertRaises(ValueError, projFile.Replace, proj0, proj2) |
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def testRead(self): |
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"""Test read_proj_file""" |
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self.doTestRead(sample_projfile_data, sample_projfile) |
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self.doTestRead(sample_projfile_data2, sample_projfile2) |
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# |
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# file doesn't exist |
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# |
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self.assertRaises(IOError, |
self.assertRaises(IOError, |
218 |
resource.read_proj_file, self.temp_file_name("nonexistent.proj")) |
resource.read_proj_file, |
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self.temp_file_name("nonexistent.proj")) |
220 |
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def test_read_unreadable_file(self): |
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"""Test read_proj_file with unreadable file |
223 |
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|
224 |
# |
As currently written this only works on unix-like systems and |
225 |
# file isn't readable |
not e.g. on MS Windows. |
226 |
# |
""" |
227 |
filename = self.temp_file_name("projfile.proj") |
filename = self.filename() |
228 |
file = open(filename, "w") |
file = open(filename, "w") |
229 |
file.close() |
file.close() |
230 |
os.chmod(filename, 0200) # write-only |
os.chmod(filename, 0200) # write-only |
231 |
self.assertRaises(IOError, resource.read_proj_file, filename) |
self.assertRaises(IOError, resource.read_proj_file, filename) |
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os.chmod(filename, 0600) # read/write so we reuse the file |
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233 |
# |
def test_read_empty_file(self): |
234 |
# file has invalid XML (or none at all) |
"""Test read_proj_file with empty file""" |
235 |
# |
filename = self.filename() |
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filename = self.temp_file_name("projfile.proj") |
|
236 |
file = open(filename, "w") |
file = open(filename, "w") |
237 |
file.close() |
file.close() |
238 |
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239 |
self.assertRaises(SAXParseException, resource.read_proj_file, filename) |
self.assertRaises(SAXParseException, resource.read_proj_file, filename) |
240 |
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241 |
def testWrite(self): |
def test_get_system_proj_file(self): |
242 |
"""Test write_proj_file""" |
"""Test resource.get_system_proj_file() |
243 |
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|
244 |
self.doTestWrite(sample_projfile_data, sample_projfile) |
This is primarily to test whether the system proj file contains |
245 |
self.doTestWrite(sample_projfile_data2, sample_projfile2) |
invalid projection paramers and whether the proj file is not |
246 |
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empty |
247 |
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""" |
248 |
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projfile, warnings = resource.get_system_proj_file() |
249 |
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self.assertEquals(warnings, []) |
250 |
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self.assert_(len(projfile.GetProjections()) > 0) |
251 |
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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 |
254 |
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projfile2, warnings = resource.get_system_proj_file() |
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self.assert_(projfile is projfile2) |
256 |
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def doTestWrite(self, data, expected): |
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258 |
filename = self.temp_file_name("projfile.proj") |
class WriteProjFileTests(ProjFileTest): |
259 |
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260 |
pf = ProjFile(filename) |
"""Test cases for writing proj files""" |
261 |
for proj in data: |
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262 |
pf.Add(Projection(proj[1], proj[0])) |
def compare_xml(self, xml1, xml2): |
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self.assertEquals(sax_eventlist(xml1), sax_eventlist(xml2)) |
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|
265 |
resource.write_proj_file(pf) |
def doTestWrite(self, projfile, expected): |
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filename = self.filename() |
267 |
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resource.write_proj_file(projfile) |
269 |
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270 |
file = open(filename) |
file = open(filename) |
271 |
written_contents = file.read() |
written_contents = file.read() |
274 |
self.validate_data(written_contents) |
self.validate_data(written_contents) |
275 |
self.validate_data(expected) |
self.validate_data(expected) |
276 |
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|
277 |
def doTestRead(self, data, input): |
def test_write(self): |
278 |
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"""Test write_proj_file""" |
279 |
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pf = ProjFile(self.filename()) |
280 |
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pf.Add(Projection(['proj=tmerc', 'ellps=clrk66', |
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'lat_0=90w', 'lon_0=90w', 'k=1'], |
282 |
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"Transverse Mercator",)) |
283 |
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pf.Add(Projection(["proj=tmerc", |
284 |
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"lat_0=0.000000000", "lon_0=-62.000000000", |
285 |
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"k=0.999500", "x_0=400000.000", "y_0=0.000", |
286 |
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"ellps=clrk80", "units=m"], |
287 |
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"Anguilla 1957 / British West Indies Grid", |
288 |
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epsg="200")) |
289 |
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file_contents = '''<?xml version="1.0" encoding="UTF-8"?> |
290 |
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<!DOCTYPE projectionlist SYSTEM "projfile.dtd"> |
291 |
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<projectionlist> |
292 |
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<projection name="Transverse Mercator"> |
293 |
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<parameter value="proj=tmerc"/> |
294 |
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<parameter value="ellps=clrk66"/> |
295 |
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<parameter value="lat_0=90w"/> |
296 |
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<parameter value="lon_0=90w"/> |
297 |
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<parameter value="k=1"/> |
298 |
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</projection> |
299 |
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<projection epsg="200" |
300 |
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name="Anguilla 1957 / British West Indies Grid"> |
301 |
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<parameter value="proj=tmerc"/> |
302 |
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<parameter value="lat_0=0.000000000"/> |
303 |
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<parameter value="lon_0=-62.000000000"/> |
304 |
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<parameter value="k=0.999500"/> |
305 |
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<parameter value="x_0=400000.000"/> |
306 |
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<parameter value="y_0=0.000"/> |
307 |
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<parameter value="ellps=clrk80"/> |
308 |
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<parameter value="units=m"/> |
309 |
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</projection> |
310 |
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</projectionlist> |
311 |
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''' |
312 |
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self.doTestWrite(pf, file_contents) |
313 |
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|
314 |
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def test_write_empty_file(self): |
315 |
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"""Test write empty ProjFile""" |
316 |
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pf = ProjFile(self.filename()) |
317 |
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file_contents = '''<?xml version="1.0" encoding="UTF-8"?> |
318 |
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<!DOCTYPE projectionlist SYSTEM "projfile.dtd"> |
319 |
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<projectionlist> |
320 |
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</projectionlist> |
321 |
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''' |
322 |
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self.doTestWrite(pf, file_contents) |
323 |
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324 |
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325 |
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class ProjFileLoadTestCase(support.FileLoadTestCase): |
326 |
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|
327 |
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"""Base class for the test cases that read specific test files""" |
328 |
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|
329 |
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file_extension = ".proj" |
330 |
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|
331 |
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def tearDown(self): |
332 |
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"""Clear the cache explicitly""" |
333 |
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resource.clear_proj_file_cache() |
334 |
|
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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() |
|
335 |
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|
336 |
pf = resource.read_proj_file(filename) |
class TestLoadingProjFile(ProjFileLoadTestCase): |
337 |
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|
338 |
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file_contents = '''\ |
339 |
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<?xml version="1.0" encoding="UTF-8"?> |
340 |
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<!DOCTYPE projectionlist SYSTEM "projfile.dtd"> |
341 |
|
<projectionlist> |
342 |
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<projection name="Transverse Mercator"> |
343 |
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<parameter value="proj=tmerc"/> |
344 |
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<parameter value="ellps=clrk66"/> |
345 |
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<parameter value="lat_0=90w"/> |
346 |
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<parameter value="lon_0=90w"/> |
347 |
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<parameter value="k=1"/> |
348 |
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</projection> |
349 |
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<projection epsg="200" name="Anguilla 1957 / British West Indies Grid"> |
350 |
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<parameter value="proj=tmerc"/> |
351 |
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<parameter value="lat_0=0.000000000"/> |
352 |
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<parameter value="lon_0=-62.000000000"/> |
353 |
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<parameter value="k=0.999500"/> |
354 |
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<parameter value="x_0=400000.000"/> |
355 |
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<parameter value="y_0=0.000"/> |
356 |
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<parameter value="ellps=clrk80"/> |
357 |
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<parameter value="units=m"/> |
358 |
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</projection> |
359 |
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</projectionlist> |
360 |
|
''' |
361 |
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|
362 |
|
def check_projection(self, proj, label, parameters): |
363 |
|
"""Check the values of the proj's label and parameters""" |
364 |
|
self.assertEquals(proj.Label(), label) |
365 |
|
params = proj.GetAllParameters()[:] |
366 |
|
params.sort() |
367 |
|
self.assertEquals(params, parameters) |
368 |
|
|
369 |
|
def test(self): |
370 |
|
projfile, warnings = resource.read_proj_file(self.filename()) |
371 |
|
# no warnings |
372 |
|
self.assertEquals(warnings, []) |
373 |
|
|
374 |
|
# There are two projections |
375 |
|
projs = projfile.GetProjections() |
376 |
|
self.assertEquals(len(projs), 2) |
377 |
|
|
378 |
|
self.check_projection(projs[0], |
379 |
|
"Transverse Mercator", |
380 |
|
['ellps=clrk66', 'k=1', 'lat_0=90w', 'lon_0=90w', |
381 |
|
'proj=tmerc']) |
382 |
|
self.check_projection(projs[1], |
383 |
|
"EPSG 200 Anguilla 1957 / British West Indies Grid", |
384 |
|
["ellps=clrk80", "k=0.999500", |
385 |
|
"lat_0=0.000000000", "lon_0=-62.000000000", |
386 |
|
"proj=tmerc", "units=m", |
387 |
|
"x_0=400000.000", "y_0=0.000"]) |
388 |
|
|
389 |
|
def test_caching(self): |
390 |
|
# test whether the projfile cache works |
391 |
|
projfile, warnings = resource.read_proj_file(self.filename()) |
392 |
|
projfile2, warnings = resource.read_proj_file(self.filename()) |
393 |
|
|
394 |
|
# Both projfiles should be the same object |
395 |
|
self.assert_(projfile2 is projfile) |
396 |
|
|
397 |
|
# If we clear the cache we should get a new one. |
398 |
|
resource.clear_proj_file_cache() |
399 |
|
projfile3, warnings = resource.read_proj_file(self.filename()) |
400 |
|
self.assert_(projfile3 is not projfile) |
401 |
|
|
402 |
|
|
403 |
eq = self.assertEquals |
class TestLoadingProjFileWithEmptyProjectionlist(ProjFileLoadTestCase): |
404 |
|
|
405 |
eq(pf.GetFilename(), filename) |
file_contents = '''\ |
406 |
|
<?xml version="1.0" encoding="UTF-8"?> |
407 |
|
<!DOCTYPE projectionlist SYSTEM "projfile.dtd"> |
408 |
|
<projectionlist> |
409 |
|
</projectionlist> |
410 |
|
''' |
411 |
|
|
412 |
for proj, d in zip(pf.GetProjections(), data): |
def test(self): |
413 |
eq(proj.GetName(), d[0]) |
projfile, warnings = resource.read_proj_file(self.filename()) |
414 |
for param in proj.GetAllParameters(): |
# no warnings |
415 |
self.assert_(param in d[1]) |
self.assertEquals(warnings, []) |
416 |
|
|
417 |
|
# There are no projections |
418 |
|
self.assertEquals(len(projfile.GetProjections()), 0) |
419 |
|
|
420 |
|
|
421 |
|
class TestProjFileWithInvalidParameters(ProjFileLoadTestCase): |
422 |
|
|
423 |
|
file_contents = '''\ |
424 |
|
<?xml version="1.0" encoding="UTF-8"?> |
425 |
|
<!DOCTYPE projectionlist SYSTEM "projfile.dtd"> |
426 |
|
<projectionlist> |
427 |
|
<projection name="Universal Transverse Mercator"> |
428 |
|
<parameter value="proj=utm"/> |
429 |
|
<parameter value="ellps=clrk66"/> |
430 |
|
<!-- an invalid zone number to trigger the parameter checking |
431 |
|
in the proj library --> |
432 |
|
<parameter value="zone=1000"/> |
433 |
|
</projection> |
434 |
|
<projection name="Transverse Mercator"> |
435 |
|
<parameter value="proj=tmerc"/> |
436 |
|
<parameter value="ellps=clrk66"/> |
437 |
|
<parameter value="lat_0=90w"/> |
438 |
|
<parameter value="lon_0=90w"/> |
439 |
|
<parameter value="k=1"/> |
440 |
|
</projection> |
441 |
|
</projectionlist> |
442 |
|
''' |
443 |
|
|
444 |
|
def setUp(self): |
445 |
|
support.FileLoadTestCase.setUp(self) |
446 |
|
|
447 |
|
def test(self): |
448 |
|
"""Test reading a proj file with invalid parameters""" |
449 |
|
projfile, warnings = resource.read_proj_file(self.filename()) |
450 |
|
projs = projfile.GetProjections() |
451 |
|
self.assertEquals(len(projs), 1) |
452 |
|
params = projs[0].GetAllParameters()[:] |
453 |
|
params.sort() |
454 |
|
self.assertEquals(params, ['ellps=clrk66', 'k=1', 'lat_0=90w', |
455 |
|
'lon_0=90w', 'proj=tmerc']) |
456 |
|
self.assertEquals(warnings, |
457 |
|
['Error in projection "Universal Transverse Mercator":' |
458 |
|
' invalid UTM zone number']) |
459 |
|
|
460 |
|
|
461 |
if __name__ == "__main__": |
if __name__ == "__main__": |
462 |
unittest.main() |
support.run_tests() |