def test_write_tiles(self, mock_open, mock_connect, mock_db):
fs = MemoryFS()
fs.writetext('1.sql', 'select 1')
layers = [
Layer(
"water", {
"fields": {},
"description": "Waterbody and ocean areas",
"sql": [{
"minzoom": 0,
"maxzoom": 4,
"file": "1.sql"
}]
}, fs)
]
out_fs = MemoryFS()
mock_open.return_value = out_fs
mock_connect.return_value = None
mock_db.return_value = MockDB()
gen = Generator("v1", layers, {"port": 1234}, "storage")
gen.write_tiles([(0, 0, 0)])
self.assertEqual(out_fs.openbin("v1/0/0/0.mvt").read(), b"result")
