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This test checks that setting in gain mode forces amp to the gain settings and ignores any power requirements. Change in SI in eqpt config and change in req power (eg power sweep) should have no effect on the propagation. Signed-off-by: EstherLerouzic <esther.lerouzic@orange.com> Change-Id: Iad826f30010fe3110d105b5206d99f502fbf98ff
98 lines
4.0 KiB
Python
98 lines
4.0 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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# @Author: Esther Le Rouzic
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# @Date: 2019-05-22
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"""
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@author: esther.lerouzic
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checks behaviour of gain mode
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- if all amps have their gains set, check that these gains are used, even if power_dbm or req_power change
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- check that saturation is correct in gain mode
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"""
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from pathlib import Path
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from numpy.testing import assert_array_equal, assert_allclose
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import pytest
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from gnpy.core.utils import lin2db, automatic_nch, dbm2watt
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from gnpy.core.network import build_network
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from gnpy.tools.json_io import load_equipment, load_network
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from gnpy.core.equipment import trx_mode_params
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from gnpy.topology.request import PathRequest, compute_constrained_path, propagate
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TEST_DIR = Path(__file__).parent
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EQPT_FILENAME = TEST_DIR / 'data/eqpt_config.json'
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NETWORK_FILENAME = TEST_DIR / 'data/perdegreemeshTopologyExampleV2_auto_design_expected.json'
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def net_setup(equipment):
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"""Common setup for tests: builds network, equipment
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"""
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network = load_network(NETWORK_FILENAME, equipment)
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spectrum = equipment['SI']['default']
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p_db = spectrum.power_dbm
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p_total_db = p_db + lin2db(automatic_nch(spectrum.f_min, spectrum.f_max, spectrum.spacing))
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build_network(network, equipment, p_db, p_total_db)
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return network
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def create_rq(equipment, srce, dest, bdir, nd_list, ls_list, mode, power_dbm):
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"""Create the usual request list according to parameters
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"""
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params = {
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'request_id': 'test_request',
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'source': srce,
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'bidir': bdir,
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'destination': dest,
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'trx_type': 'Voyager',
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'trx_mode': mode,
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'format': mode,
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'nodes_list': nd_list,
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'loose_list': ls_list,
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'effective_freq_slot': None,
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'path_bandwidth': 100000000000.0,
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'spacing': 50e9 if mode == 'mode 1' else 75e9,
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'power': dbm2watt(power_dbm)
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}
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trx_params = trx_mode_params(equipment, params['trx_type'], params['trx_mode'], True)
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params.update(trx_params)
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f_min = params['f_min']
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f_max_from_si = params['f_max']
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params['nb_channel'] = automatic_nch(f_min, f_max_from_si, params['spacing'])
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return PathRequest(**params)
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@pytest.mark.parametrize("power_dbm", [0, -2, 3])
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@pytest.mark.parametrize("req_power", [1e-3, 0.5e-3, 2e-3])
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def test_gain_mode(req_power, power_dbm):
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""" Gains are all set on the selected path, so that since the design is made for 0dBm,
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in gain mode, whatever the value of equipment power_dbm or request power, the network is unchanged
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and the propagation remains the same as for power mode and 0dBm
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"""
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equipment = load_equipment(EQPT_FILENAME)
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network = net_setup(equipment)
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req = create_rq(equipment, 'trx Brest_KLA', 'trx Rennes_STA', False,
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['Edfa0_roadm Brest_KLA', 'roadm Lannion_CAS', 'trx Rennes_STA'],
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['STRICT', 'STRICT', 'STRICT'], 'mode 1', 0)
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path = compute_constrained_path(network, req)
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# Propagation in power_mode
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infos_expected = propagate(path, req, equipment)
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# Now set to gain mode
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setattr(equipment['Span']['default'], 'power_mode', False)
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setattr(equipment['SI']['default'], 'power_dbm', power_dbm)
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req.power = req_power
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network2 = net_setup(equipment)
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path2 = compute_constrained_path(network2, req)
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infos_actual = propagate(path2, req, equipment)
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assert_array_equal(infos_expected.baud_rate, infos_actual.baud_rate)
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assert_allclose(infos_expected.signal, infos_actual.signal, rtol=1e-14)
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assert_allclose(infos_expected.nli, infos_actual.nli, rtol=1e-14)
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assert_allclose(infos_expected.ase, infos_actual.ase, rtol=1e-14)
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assert_array_equal(infos_expected.roll_off, infos_actual.roll_off)
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assert_array_equal(infos_expected.chromatic_dispersion, infos_actual.chromatic_dispersion)
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assert_array_equal(infos_expected.pmd, infos_actual.pmd)
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assert_array_equal(infos_expected.channel_number, infos_actual.channel_number)
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assert_array_equal(infos_expected.number_of_channels, infos_actual.number_of_channels)
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