def test_download_tile(self):
output = '/tmp/tile.png'
if os.path.exists(output): os.remove(output)
# Unknown URL keyword
mb = TilesManager()
mb.tiles_url = "http://{X}.tile.openstreetmap.org/{z}/{x}/{y}.png"
self.assertRaises(DownloadError, mb.download_tile, output, 1, 1, 1)
self.assertFalse(os.path.exists(output))
# With subdomain keyword
mb.tiles_url = "http://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png"
mb.download_tile(output, 1, 1, 1)
self.assertTrue(os.path.exists(output))
# No subdomain keyword
mb.tiles_url = "http://tile.cloudmade.com/f1fe9c2761a15118800b210c0eda823c/1/{size}/{z}/{x}/{y}.png"
mb.download_tile(output, 1, 1, 1)
self.assertTrue(os.path.exists(output))
# Subdomain in available range
mb.tiles_url = "http://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png"
mb.tiles_subdomains = list("abc")
for y in range(3):
mb.download_tile(output, 10, 0, y)
self.assertTrue(os.path.exists(output))
# Subdomain out of range
mb.tiles_subdomains = list("abcz")
self.assertRaises(DownloadError, mb.download_tile, output, 10, 1, 2)
# Clean out
os.remove(output)
