kopia lustrzana https://github.com/NanoVNA-Saver/nanovna-saver
196 wiersze
7.7 KiB
Python
196 wiersze
7.7 KiB
Python
# NanoVNASaver
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#
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# A python program to view and export Touchstone data from a NanoVNA
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# Copyright (C) 2019, 2020 Rune B. Broberg
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# Copyright (C) 2020,2021 NanoVNA-Saver Authors
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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import unittest
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import logging
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import os
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# Import targets to be tested
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from NanoVNASaver.Touchstone import Options, Touchstone
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from NanoVNASaver.RFTools import Datapoint
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class TestTouchstoneOptions(unittest.TestCase):
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def setUp(self):
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self.opts = Options()
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def test_defaults(self):
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self.assertEqual(self.opts.unit, "ghz")
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self.assertEqual(self.opts.parameter, "s")
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self.assertEqual(self.opts.format, "ma")
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self.assertEqual(self.opts.resistance, 50)
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self.assertEqual(self.opts.factor, 1000000000)
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self.assertEqual(str(self.opts), "# GHZ S MA R 50")
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def test_parse(self):
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self.assertRaisesRegex(
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TypeError, "Not an option line:",
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self.opts.parse, "")
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self.assertRaisesRegex(
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TypeError, "Not an option line: !",
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self.opts.parse, "!")
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self.assertRaisesRegex(
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TypeError, "Illegal option line: # ILLEGAL",
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self.opts.parse, "# ILLEGAL")
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self.assertRaisesRegex(
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TypeError, "Illegal option line: # GHz mhz",
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self.opts.parse, "# GHz mhz")
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self.opts.parse('# khz')
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self.assertEqual(str(self.opts), "# KHZ S MA R 50")
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self.assertEqual(self.opts.factor, 1000)
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self.opts.parse('# r 123 ri hz y')
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self.assertEqual(str(self.opts), "# HZ Y RI R 123")
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self.assertEqual(self.opts.factor, 1)
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class TestTouchstoneTouchstone(unittest.TestCase):
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def test_load(self):
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ts = Touchstone("./tests/data/valid.s1p")
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ts.load()
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self.assertEqual(str(ts.opts), "# HZ S RI R 50")
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self.assertEqual(len(ts.s11), 1010)
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self.assertEqual(len(ts.s21), 0)
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self.assertEqual(ts.r, 50)
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ts = Touchstone("./tests/data/valid.s2p")
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ts.load()
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ts.gen_interpolation()
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self.assertEqual(str(ts.opts), "# HZ S RI R 50")
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self.assertEqual(len(ts.s11), 1020)
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self.assertEqual(len(ts.s21), 1020)
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self.assertEqual(len(ts.s12), 1020)
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self.assertEqual(len(ts.s22), 1020)
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self.assertIn("! Vector Network Analyzer VNA R2", ts.comments)
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self.assertEqual(ts.min_freq(), 500000)
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self.assertEqual(ts.max_freq(), 900000000)
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self.assertEqual(ts.s_freq("11", 1),
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Datapoint(1, -3.33238E-001, 1.80018E-004))
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self.assertEqual(ts.s_freq("11", 750000),
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Datapoint(750000, -0.3331754099382822,
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0.00032433255669243524))
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ts = Touchstone("./tests/data/ma.s2p")
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ts.load()
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self.assertEqual(str(ts.opts), "# MHZ S MA R 50")
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ts = Touchstone("./tests/data/db.s2p")
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ts.load()
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self.assertEqual(str(ts.opts), "# HZ S DB R 50")
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ts = Touchstone("./tests/data/broken_pair.s2p")
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with self.assertLogs(level=logging.ERROR) as cm:
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ts.load()
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self.assertRegex(cm.output[0], "Data values aren't pairs")
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ts = Touchstone("./tests/data/missing_pair.s2p")
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with self.assertLogs(level=logging.ERROR) as cm:
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ts.load()
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self.assertRegex(cm.output[0], "Inconsistent number")
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ts = Touchstone("./tests/data/nonexistent.s2p")
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with self.assertLogs(level=logging.ERROR) as cm:
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ts.load()
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self.assertRegex(cm.output[0], "No such file or directory")
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def test_swap(self):
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ts = Touchstone("./tests/data/valid.s2p")
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ts.load()
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s11, s21, s12, s22 = ts.sdata
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ts.swap()
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s11_, s21_, s12_, s22_ = ts.sdata
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self.assertEqual([s11_, s21_, s12_, s22_], [s22, s12, s21, s11])
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def test_db_conversation(self):
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ts_db = Touchstone("./tests/data/attenuator-0643_DB.s2p")
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ts_db.load()
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ts_ri = Touchstone("./tests/data/attenuator-0643_RI.s2p")
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ts_ri.load()
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ts_ma = Touchstone("./tests/data/attenuator-0643_MA.s2p")
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ts_ma.load()
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self.assertEqual(len(ts_db.s11), len(ts_ri.s11))
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for dps_db, dps_ri in zip(ts_db.s11, ts_ri.s11):
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self.assertAlmostEqual(dps_db.z, dps_ri.z, places=5)
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self.assertEqual(len(ts_db.s11), len(ts_ma.s11))
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for dps_db, dps_ma in zip(ts_db.s11, ts_ma.s11):
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self.assertAlmostEqual(dps_db.z, dps_ma.z, places=5)
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def test_load_scikit(self):
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ts = Touchstone("./tests/data/scikit_unordered.s2p")
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with self.assertLogs(level=logging.WARNING) as cm:
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ts.load()
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self.assertEqual(cm.output, [
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'WARNING:NanoVNASaver.Touchstone:'
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'Non integer resistance value: 50.0',
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'WARNING:NanoVNASaver.Touchstone:Comment after header:'
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' !freq ReS11 ImS11 ReS21 ImS21 ReS12 ImS12 ReS22 ImS22',
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'WARNING:NanoVNASaver.Touchstone:Frequency not ascending:'
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' 15000000.0 0.849810063 -0.4147357 -0.000306106 0.0041482'
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' 0.0 0.0 0.0 0.0',
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'WARNING:NanoVNASaver.Touchstone:Reordering data',
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])
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self.assertEqual(str(ts.opts), "# HZ S RI R 50")
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self.assertEqual(len(ts.s11), 101)
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self.assertIn("!freq ReS11 ImS11 ReS21 ImS21 ReS12 ImS12 ReS22 ImS22",
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ts.comments)
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def test_setter(self):
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ts = Touchstone("")
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dp_list = [Datapoint(1, 0.0, 0.0), Datapoint(3, 1.0, 1.0)]
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ts.s11 = dp_list[:]
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ts.s21 = dp_list[:]
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ts.s12 = dp_list[:]
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ts.s22 = dp_list[:]
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self.assertEqual(ts.s11, dp_list)
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self.assertEqual(ts.s21, dp_list)
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self.assertEqual(ts.s12, dp_list)
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self.assertEqual(ts.s22, dp_list)
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self.assertEqual(ts.min_freq(), 1)
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self.assertEqual(ts.max_freq(), 3)
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ts.gen_interpolation()
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self.assertEqual(ts.s_freq("11", 2), Datapoint(2, 0.5, 0.5))
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def test_save(self):
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ts = Touchstone("./tests/data/valid.s2p")
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self.assertEqual(ts.saves(), "# HZ S RI R 50\n")
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ts.load()
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lines = ts.saves().splitlines()
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self.assertEqual(len(lines), 1021)
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self.assertEqual(lines[0], "# HZ S RI R 50")
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self.assertEqual(lines[1], '500000 -0.333238 0.000180018')
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self.assertEqual(lines[-1], '900000000 -0.127646 0.31969')
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lines = ts.saves(4).splitlines()
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self.assertEqual(len(lines), 1021)
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self.assertEqual(lines[0], "# HZ S RI R 50")
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self.assertEqual(lines[1],
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'500000 -0.333238 0.000180018 0.67478 -8.1951e-07'
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' 0.67529 -8.20129e-07 -0.333238 0.000308078')
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self.assertEqual(lines[-1],
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'900000000 -0.127646 0.31969 0.596287 -0.503453'
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' 0.599076 -0.50197 -0.122713 0.326965')
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ts.filename = "./tests/data/output.s2p"
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ts.save(4)
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os.remove(ts.filename)
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ts.filename = ""
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self.assertRaises(FileNotFoundError, ts.save)
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ts.s11[0] = Datapoint(100, 0.1, 0.1)
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self.assertRaisesRegex(
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LookupError, "Frequencies of sdata not correlated", ts.saves, 4)
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