def test_ordnance_survey_tile_styles():
"""
Tests that setting the Ordnance Survey tile style works as expected.
This is essentially just assures information is properly propagated through
the class structure.
"""
dummy_apikey = "None"
ref_url = ('https://api2.ordnancesurvey.co.uk/'
'mapping_api/v1/service/wmts?'
'key=None&height=256&width=256&tilematrixSet=EPSG%3A3857&'
'version=1.0.0&style=true&layer={layer}%203857&'
'SERVICE=WMTS&REQUEST=GetTile&format=image%2Fpng&'
'TileMatrix=EPSG%3A3857%3A{z}&TileRow={y}&TileCol={x}')
tile = ["1", "2", "3"]
# Default is Road.
os = cimgt.OrdnanceSurvey(dummy_apikey)
url = os._image_url(tile)
assert url == ref_url.format(layer="Road", z=tile[2], y=tile[1], x=tile[0])
for layer in ['Outdoor', 'Light', 'Night', 'Leisure']:
os = cimgt.OrdnanceSurvey(dummy_apikey, layer=layer)
url = os._image_url(tile)
assert url == ref_url.format(layer=layer,
z=tile[2],
y=tile[1],
x=tile[0])
# Exception is raised if unknown style is passed.
with pytest.raises(ValueError):
cimgt.OrdnanceSurvey(dummy_apikey, layer="random_style")
def test_ordnance_survey_get_image():
# In order to test fetching map images from OS
# an API key needs to be provided
try:
api_key = os.environ['ORDNANCE_SURVEY_API_KEY']
except KeyError:
pytest.skip('ORDNANCE_SURVEY_API_KEY environment variable is unset.')
os1 = cimgt.OrdnanceSurvey(api_key, layer="Outdoor")
os2 = cimgt.OrdnanceSurvey(api_key, layer="Night")
tile = (500, 300, 10)
img1, extent1, _ = os1.get_image(tile)
img2, extent2, _ = os2.get_image(tile)
# Different images for different layers
assert img1 != img2
# The extent is the same though
assert extent1 == extent2
