Lab056: compare 20 and 500 ksymbol/s in controlled RF session
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LittleSam129
248
tests/test_lab056_preparation.py
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248
tests/test_lab056_preparation.py
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"""Lab056: цифровые условия и отказы runner без оборудования."""
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from __future__ import annotations
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import json
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from dataclasses import asdict
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from pathlib import Path
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import subprocess
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import numpy as np
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import pytest
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from experiments import lab056_abab_energy as lab
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from experiments import lab056_capture_runner as capture
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from tools.hackrf_process_check import ProcessCheck, ProcessState
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def point():
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# Только синтетическая конфигурация теста; это не разрешение на эфир.
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return capture.OperatingPoint(915000000, physical_path="SIMULATED", path_confirmed=True)
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def test_no_authorization_has_no_side_effects(tmp_path):
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with pytest.raises(PermissionError):
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capture.capture_once(tmp_path, point(), runner=lambda _: pytest.fail("hardware"))
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assert list(tmp_path.iterdir()) == []
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@pytest.mark.parametrize("configuration", [capture.OperatingPoint(),
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capture.OperatingPoint(0), capture.OperatingPoint(True), capture.OperatingPoint(915e6)])
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def test_missing_or_invalid_frequency_precedes_io(tmp_path, configuration):
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with pytest.raises(PermissionError):
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capture.capture_once(tmp_path, configuration, authorization=True)
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with pytest.raises(PermissionError):
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capture.preflight_only(tmp_path, configuration)
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assert list(tmp_path.iterdir()) == []
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def test_fixed_gain_and_finite_nonrepeating_commands():
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rx = capture.command(point(), "rx.cs8", 24000000)
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tx = capture.command(point(), "tx.cs8", 1000000, transmit=True)
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assert rx[rx.index("-l") + 1] == rx[rx.index("-g") + 1] == "24"
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assert tx[tx.index("-x") + 1] == "10"
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for command in (rx, tx):
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assert "-R" not in command
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assert command[command.index("-a") + 1] == command[command.index("-p") + 1] == "0"
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assert command[command.index("-f") + 1] == "915000000"
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assert command[command.index("-s") + 1] == "8000000"
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@pytest.mark.parametrize("failure", [None, "master", "slave", "clkin", "receive"])
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def test_common_clock_logic_uses_agreed_frequency(failure):
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commands = []
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def runner(command):
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commands.append(command)
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output, code = "", 0
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if "--si5351c" in command:
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serial = command[command.index("-d") + 1]
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bad = ((failure == "master" and serial == capture.previous.clock.MASTER_SERIAL) or
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(failure == "slave" and serial == capture.previous.clock.SLAVE_SERIAL))
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output = "0x0e" if bad else "0x26"
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elif "-i" in command:
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output = "UNKNOWN" if failure == "clkin" else "CLKIN status: clock signal detected"
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elif "-r" in command:
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code = int(failure == "receive")
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assert command[command.index("-f") + 1] == "915000000"
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return subprocess.CompletedProcess(command, code, output, "")
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guard = capture.previous.clock.TransmitGuard()
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if failure:
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with pytest.raises(RuntimeError):
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capture.common_clock(point(), runner, guard, sleep_function=lambda _: None)
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assert not guard.tx_allowed
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else:
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assert capture.common_clock(point(), runner, guard, sleep_function=lambda _: None)["passed"]
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assert not any("-t" in command for command in commands)
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@pytest.mark.parametrize("failure", [None, "busy", "clock", "early_rx", "tx", "counters", "cleanup", "rx_role_loss", "tx_role_loss", "clipping_before", "clipping_during"])
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def test_one_shot_rx_first_and_failures(tmp_path, monkeypatch, failure):
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events = []
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monkeypatch.setattr(capture, "validated_metadata", lambda _: {"tx_sha256": "TEST", "tx_samples": 200})
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monkeypatch.setattr(capture.previous.phy.lab045, "_verify_device_inventory", lambda _: {"passed": True})
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monkeypatch.setattr(lab, "RX_SAMPLES", 65536)
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approved = {"passed": True, "rf_tx_count": 0, "point": asdict(point()), "tx_sha256": "TEST",
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"clock": {"passed": True, "master_reg29": 38, "slave_reg29": 38, "slave_clkin_status": "DETECTED"},
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"rx_level": {"saturation_detected": False}}
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lab.save_new(tmp_path / "preflight_result.json", approved)
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def clock_checker(point, runner, guard, **kwargs):
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events.append("clock")
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if failure == "clock":
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raise RuntimeError("clock")
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guard.allow()
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return {"passed": True, "master_reg29": 38, "slave_reg29": 38, "slave_clkin_status": "DETECTED"}
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class Process:
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def poll(self):
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return 1 if failure == "early_rx" else None
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def wait(self, timeout):
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(tmp_path / "rx_stream.cs8").write_bytes(bytes([127 if failure == "clipping_during" else 1]) * 131072)
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return 0
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def close_logs(self):
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pass
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def terminate(self):
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events.append("terminate")
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if failure == "cleanup":
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raise RuntimeError("cleanup")
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def starter(command, stdout, stderr):
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events.append("rx")
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(tmp_path / "rx_stream.cs8").write_bytes(bytes([127 if failure == "clipping_before" else 1]) * 131072)
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stdout.write_text("")
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stderr.write_text("1 RX overruns\n0 overruns" if failure == "rx_role_loss" else "0 overruns")
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return Process()
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def runner(command):
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if "-t" in command:
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events.append("tx")
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log = "" if failure == "counters" else ("1 TX underruns\n0 underruns" if failure == "tx_role_loss" else "0 underruns")
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return subprocess.CompletedProcess(command, int(failure == "tx"), "", log)
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events.append("cleanup")
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return subprocess.CompletedProcess(command, 0, "", "")
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kwargs = dict(authorization=True, runner=runner, process_starter=starter,
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process_checker=lambda: ProcessCheck(ProcessState.BUSY if failure == "busy" else ProcessState.CLEAR, ()),
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clock_checker=clock_checker, sleep_function=lambda _: events.append("lead"))
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if failure:
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with pytest.raises(RuntimeError):
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capture.capture_once(tmp_path, point(), **kwargs)
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else:
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assert capture.capture_once(tmp_path, point(), **kwargs)["passed"]
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assert events.count("tx") == (0 if failure in ("busy", "clock", "early_rx", "clipping_before") else 1)
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if "tx" in events:
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assert events.index("rx") < events.index("lead") < events.index("tx")
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before = events.copy()
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with pytest.raises(FileExistsError):
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capture.capture_once(tmp_path, point(), **kwargs)
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assert events == before
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result = json.loads((tmp_path / "capture_result.json").read_text())
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assert result["passed"] == (failure is None)
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assert result["rf_tx_count"] == events.count("tx")
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@pytest.mark.parametrize("failure", [None, "clock", "clipping", "tx_attempt", "cleanup"])
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def test_rx_only_preflight_stops_before_tx(tmp_path, monkeypatch, failure):
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calls = []
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monkeypatch.setattr(capture, "validated_metadata", lambda _: {"tx_sha256": "TEST"})
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monkeypatch.setattr(capture.previous.phy.lab045, "_verify_device_inventory", lambda _: {"passed": True})
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def runner(command):
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calls.append(command)
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assert "-t" not in command
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if "-r" in command:
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Path(command[command.index("-r") + 1]).write_bytes(bytes([127 if failure == "clipping" else 1]) * 1600000)
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if failure == "cleanup":
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raise RuntimeError("cleanup")
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return subprocess.CompletedProcess(command, 0, "0 RX overruns", "")
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def clock_checker(point, runner, guard, **kwargs):
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if failure == "tx_attempt":
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runner(["hackrf_transfer", "-t", "forbidden"])
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return {"passed": True, "master_reg29": 14 if failure == "clock" else 38,
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"slave_reg29": 38, "slave_clkin_status": "DETECTED"}
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kwargs = dict(runner=runner, clock_checker=clock_checker,
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process_checker=lambda: ProcessCheck(ProcessState.CLEAR, ()))
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if failure:
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with pytest.raises((RuntimeError, PermissionError)):
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capture.preflight_only(tmp_path, point(), **kwargs)
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else:
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assert capture.preflight_only(tmp_path, point(), **kwargs)["passed"]
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result = json.loads((tmp_path / "preflight_result.json").read_text())
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assert result["rf_tx_count"] == 0
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assert result["passed"] == (failure is None)
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assert not (tmp_path / "hardware_attempt.json").exists()
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with pytest.raises(FileExistsError):
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capture.preflight_only(tmp_path, point(), **kwargs)
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def test_preflight_cannot_authorize_another_frequency(tmp_path):
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approved = {"passed": True, "rf_tx_count": 0, "point": asdict(point()), "tx_sha256": "TEST",
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"clock": {"passed": True, "master_reg29": 38, "slave_reg29": 38, "slave_clkin_status": "DETECTED"},
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"rx_level": {"saturation_detected": False}}
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lab.save_new(tmp_path / "preflight_result.json", approved)
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capture.require_preflight(tmp_path, point(), {"tx_sha256": "TEST"})
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with pytest.raises(PermissionError):
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capture.require_preflight(tmp_path, capture.OperatingPoint(916000000), {"tx_sha256": "TEST"})
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def test_external_frequency_needs_no_country_or_band_fields():
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configuration = capture.OperatingPoint(916000000)
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command = capture.command(configuration, "NUL", 65536)
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assert command[command.index("-f") + 1] == "916000000"
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def test_complex_gain_and_repeatability_are_not_rx_normalization():
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random_generator = np.random.default_rng(56)
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reference = random_generator.normal(size=8000).astype(complex)
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expected = .3 + .4j
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received = 1 + 2j + expected * reference
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gain = lab.complex_gain(reference, received, 0)
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assert complex(gain["real"], gain["imag"]) == pytest.approx(expected)
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rows = []
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for label, power in (("A1", 4), ("B1", 1), ("A2", 8), ("B2", 2)):
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rows.append({"label": label, "background_power": 1, "raw_rx": {"power_code2": power + 1},
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"background_subtracted_signal_power": power, "channel_gain_power": power,
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"measurement": {"heldout_signal_power": power}})
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result = lab.comparison_summary(rows)
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assert result["received_power_difference_db"] == pytest.approx(-6.020599913)
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assert result["energy_per_symbol_difference_db"] == pytest.approx(-20)
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assert [r["channel_gain_difference_db"] for r in result["repeatability"]] == pytest.approx([3.010299957, 3.010299957])
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rows[-1]["background_subtracted_signal_power"] = None
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assert lab.comparison_summary(rows)["received_power_difference_db"] is None
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def test_nonpositive_excess_is_not_a_power_ratio():
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assert lab.difference_db(-1, 1) is None
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assert lab.difference_db(None, 1) is None
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assert lab.difference_db(.25, 1) == pytest.approx(-6.020599913)
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def test_invalid_result_does_not_leave_partial_json(tmp_path):
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path = tmp_path / "result.json"
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with pytest.raises(ValueError):
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lab.save_new(path, {"invalid": float("nan")})
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assert not path.exists()
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lab.save_new(path, {"passed": True})
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with pytest.raises(FileExistsError):
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lab.save_new(path, {"passed": False})
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assert json.loads(path.read_text())["passed"] is True
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@pytest.mark.parametrize("log,expected,passed", [
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("0 overruns", "overrun", True), ("0 RX overrun", "overrun", True),
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("0 TX underruns", "underrun", True), ("1 RX overruns\n0 overruns", "overrun", False),
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("1 TX underrun\n0 underruns", "underrun", False),
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("unknown overruns\n0 overruns", "overrun", False),
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("0 overruns\nunderrun detected", "overrun", False),
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("0.0 overruns", "overrun", False), ("-1 overruns", "overrun", False),
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("0 underruns", "overrun", False), ("", "overrun", False)])
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def test_all_loss_mentions_must_be_explicit_zero(log, expected, passed):
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assert capture.clean_counter_log(log, expected) is passed
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def test_deterministic_ab_rms_and_no_clipping():
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powers = []
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for rate in (20000, 500000):
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raw = lab.build_burst(rate)
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values = raw[::2].astype(float) + 1j * raw[1::2].astype(float)
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assert not np.any((raw == -128) | (raw == 127))
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powers.append(float(np.mean(abs(values)**2)))
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np.testing.assert_array_equal(raw, lab.build_burst(rate))
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assert abs(lab.difference_db(powers[1], powers[0])) < .01
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