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oopt-gnpy/tests/test_disjunction.py
Jan Kundrát 76e9146043 docs: docstring formatting 
Let's use the pythonic indenting, quoting and structure in general as
specified in PEP 0257.

Change-Id: Icd0b4fbd94dabd9a163ae3f6887b236e76c486ab
2023-04-18 01:34:19 +02:00

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#!/usr/bin/env python3
# Module name : test_disjunction.py
# Version:
# License: BSD 3-Clause Licence
# Copyright (c) 2018, Telecom Infra Project
"""
@author: esther.lerouzic
checks that computed paths are disjoint as specified in the json service file
that computed paths do not loop
that include node constraints are correctly taken into account
"""
from pathlib import Path
import pytest
from gnpy.core.equipment import trx_mode_params
from gnpy.core.network import build_network
from gnpy.core.exceptions import ServiceError, DisjunctionError
from gnpy.core.utils import automatic_nch, lin2db
from gnpy.core.elements import Roadm
from gnpy.topology.request import (compute_path_dsjctn, isdisjoint, find_reversed_path, PathRequest,
correct_json_route_list)
from gnpy.topology.spectrum_assignment import build_oms_list
from gnpy.tools.json_io import requests_from_json, load_requests, load_network, load_equipment, disjunctions_from_json
NETWORK_FILE_NAME = Path(__file__).parent.parent / 'tests/data/testTopology_expected.json'
SERVICE_FILE_NAME = Path(__file__).parent.parent / 'tests/data/testTopology_testservices.json'
RESULT_FILE_NAME = Path(__file__).parent.parent / 'tests/data/testTopology_testresults.json'
EQPT_LIBRARY_NAME = Path(__file__).parent.parent / 'tests/data/eqpt_config.json'
@pytest.fixture()
def serv(test_setup):
"""common setup for service list"""
network, equipment = test_setup
data = load_requests(SERVICE_FILE_NAME, equipment, bidir=False, network=network, network_filename=NETWORK_FILE_NAME)
rqs = requests_from_json(data, equipment)
rqs = correct_json_route_list(network, rqs)
dsjn = disjunctions_from_json(data)
return network, equipment, rqs, dsjn
@pytest.fixture()
def test_setup():
"""common setup for tests: builds network, equipment and oms only once"""
equipment = load_equipment(EQPT_LIBRARY_NAME)
network = load_network(NETWORK_FILE_NAME, equipment)
# Build the network once using the default power defined in SI in eqpt config
# power density : db2linp(ower_dbm': 0)/power_dbm': 0 * nb channels as defined by
# spacing, f_min and f_max
p_db = equipment['SI']['default'].power_dbm
p_total_db = p_db + lin2db(automatic_nch(equipment['SI']['default'].f_min,
equipment['SI']['default'].f_max, equipment['SI']['default'].spacing))
build_network(network, equipment, p_db, p_total_db)
build_oms_list(network, equipment)
return network, equipment
def test_disjunction(serv):
"""service_file contains sevaral combination of disjunction constraint
The test checks that computed paths with disjunction constraint are effectively disjoint.
"""
network, equipment, rqs, dsjn = serv
pths = compute_path_dsjctn(network, equipment, rqs, dsjn)
print(dsjn)
dsjn_list = [d.disjunctions_req for d in dsjn]
# assumes only pairs in dsjn list
test = True
for e in dsjn_list:
rqs_id_list = [r.request_id for r in rqs]
p1 = pths[rqs_id_list.index(e[0])][1:-1]
p2 = pths[rqs_id_list.index(e[1])][1:-1]
if isdisjoint(p1, p2) + isdisjoint(p1, find_reversed_path(p2)) > 0:
test = False
print(f'Computed path (roadms):{[e.uid for e in p1 if isinstance(e, Roadm)]}\n')
print(f'Computed path (roadms):{[e.uid for e in p2 if isinstance(e, Roadm)]}\n')
break
print(dsjn_list)
assert test
def test_does_not_loop_back(serv):
"""check that computed paths do not loop back ie each element appears only once"""
network, equipment, rqs, dsjn = serv
pths = compute_path_dsjctn(network, equipment, rqs, dsjn)
test = True
for p in pths:
for el in p:
p.remove(el)
a = [e for e in p if e.uid == el.uid]
if a:
test = False
break
assert test
# TODO : test that identical requests are correctly agregated
# and reproduce disjunction vector as well as route constraints
# check that requests with different parameters are not aggregated
# check that the total agregated bandwidth is the same after aggregation
#
def create_rq(equipment, srce, dest, bdir, node_list, loose_list, rqid='test_request'):
"""create the usual request list according to parameters"""
requests_list = []
params = {
'request_id': rqid,
'source': srce,
'bidir': bdir,
'destination': dest,
'trx_type': 'Voyager',
'trx_mode': 'mode 1',
'spacing': 50000000000.0,
'nodes_list': node_list,
'loose_list': loose_list,
'path_bandwidth': 100.0e9,
'power': 1.0,
'effective_freq_slot': None,
}
params['format'] = params['trx_mode']
trx_params = trx_mode_params(equipment, params['trx_type'], params['trx_mode'], True)
params.update(trx_params)
f_min = params['f_min']
f_max_from_si = params['f_max']
params['nb_channel'] = automatic_nch(f_min, f_max_from_si, params['spacing'])
requests_list.append(PathRequest(**params))
return requests_list
@pytest.mark.parametrize('srce, dest, result, pth, node_list, loose_list', [
['a', 'trx h', 'fail', 'no_path', [], []],
['trx a', 'h', 'fail', 'no_path', [], []],
['trx a', 'trx h', 'pass', 'found_path', [], []],
['trx a', 'trx h', 'pass', 'found_path', ['roadm b', 'roadm a'], ['LOOSE', 'LOOSE']],
['trx a', 'trx h', 'pass', 'no_path', ['roadm b', 'roadm a'], ['STRICT', 'STRICT']],
['trx a', 'trx h', 'pass', 'found_path', ['roadm b', 'roadm c'], ['STRICT', 'STRICT']],
['trx a', 'trx h', 'fail', 'no_path', ['Lorient_KMA', 'roadm c'], ['STRICT', 'STRICT']],
['trx a', 'trx h', 'pass', 'no_path', ['roadm Lorient_KMA', 'roadm c'], ['LOOSE', 'STRICT']],
['trx a', 'trx h', 'pass', 'found_path', ['roadm c', 'roadm c'], ['LOOSE', 'LOOSE']],
['trx a', 'trx h', 'pass', 'found_path', ['roadm c', 'roadm c'], ['STRICT', 'STRICT']],
['trx a', 'trx h', 'pass', 'found_path', ['roadm c', 'roadm g'], ['STRICT', 'STRICT']],
['trx a', 'trx h', 'pass', 'found_path', ['trx a', 'roadm g'], ['STRICT', 'STRICT']],
['trx a', 'trx h', 'pass', 'found_path', ['trx h'], ['STRICT']],
['trx a', 'trx h', 'pass', 'found_path', ['roadm a'], ['STRICT']]])
def test_include_constraints(test_setup, srce, dest, result, pth, node_list, loose_list):
"""check that all combinations of constraints are correctly handled:
- STRICT/LOOSE
- correct names/incorrect names -> pass/fail
- possible include/impossible include
if incorrect name -> fail
else:
constraint |one or more STRICT | all LOOSE
----------------------------------------------------------------------------------
>1 path from s to d | can be applied | found_path | found_path
| cannot be applied | no_path | found_path
----------------------------------------------------------------------------------
0 | | computation stops
"""
network, equipment = test_setup
dsjn = []
bdir = False
rqs = create_rq(equipment, srce, dest, bdir, node_list, loose_list)
print(rqs)
if result == 'fail':
with pytest.raises(ServiceError):
rqs = correct_json_route_list(network, rqs)
else:
rqs = correct_json_route_list(network, rqs)
paths = compute_path_dsjctn(network, equipment, rqs, dsjn)
# if loose, one path can be returned
if paths[0]:
assert pth == 'found_path'
else:
assert pth == 'no_path'
@pytest.mark.parametrize('dis1, dis2, node_list1, loose_list1, result, expected_paths', [
[['1', '2', '3'], ['2', '3'], [], [], 'pass',
[['roadm a', 'roadm c', 'roadm d', 'roadm e', 'roadm g'],
['roadm c', 'roadm f'],
['roadm a', 'roadm b', 'roadm f', 'roadm h']]],
[['1', '2', '3'], ['2', '3'], ['b'], ['STRICT'], 'fail', []],
[['1', '2'], ['2', '3'], [], [], 'pass',
[['roadm a', 'roadm c', 'roadm d', 'roadm e', 'roadm g'],
['roadm c', 'roadm f'],
['roadm a', 'roadm b', 'roadm f', 'roadm h']]],
[['1', '2'], ['2', '3'], ['roadm e'], ['LOOSE'], 'pass',
[['roadm a', 'roadm c', 'roadm d', 'roadm e', 'roadm g'],
['roadm c', 'roadm f'],
['roadm a', 'roadm b', 'roadm f', 'roadm h']]],
[['1', '2'], ['2', '3'], ['roadm c | roadm f'], ['LOOSE'], 'pass',
[['roadm a', 'roadm c', 'roadm d', 'roadm e', 'roadm g'],
['roadm c', 'roadm f'],
['roadm a', 'roadm b', 'roadm f', 'roadm h']]]])
def test_create_disjunction(test_setup, dis1, dis2, node_list1, loose_list1, result, expected_paths):
"""verifies that the expected result is obtained for a set of particular constraints:
in particular, verifies that:
- multiple disjunction constraints are correcly handled
- in case a loose constraint can not be met, the first alternate candidate is selected
instead of the last one (last case).
"""
network, equipment = test_setup
json_data = {
'synchronization': [{
'synchronization-id': 'x',
'svec': {
'relaxable': 'false',
'disjointness': 'node link',
'request-id-number': dis1
}
}, {
'synchronization-id': 'y',
'svec': {
'relaxable': 'false',
'disjointness': 'node link',
'request-id-number': dis2
}
}]}
dsjn = disjunctions_from_json(json_data)
bdir = False
rqs = create_rq(equipment, 'trx a', 'trx g', bdir, node_list1, loose_list1, '1') +\
create_rq(equipment, 'trx c', 'trx f', bdir, [], [], '2') +\
create_rq(equipment, 'trx a', 'trx h', bdir, [], [], '3')
if result == 'fail':
with pytest.raises(DisjunctionError):
paths = compute_path_dsjctn(network, equipment, rqs, dsjn)
else:
paths = compute_path_dsjctn(network, equipment, rqs, dsjn)
path_names = []
for path in paths:
roadm_names = [e.uid for e in path if isinstance(e, Roadm)]
path_names.append(roadm_names)
assert path_names == expected_paths
# if loose, one path can be returned
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