Thomas K Ales [MSE]
51 lines
1.5 KiB
Python
Executable File
51 lines
1.5 KiB
Python
Executable File
"""core.config: round-trip, tolerance, and the helios_port regression.
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The old dict-based writer rebuilt the JSON from only the main window's
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fields, silently discarding helios_port every time a port was edited.
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ScanDefaults.save() always writes every field.
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"""
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import json
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from core.config import ScanDefaults
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def test_roundtrip(tmp_path):
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p = tmp_path / "defaults.json"
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d = ScanDefaults(t3r_port="/dev/ttyACM3", helios_port="/dev/ttyUSB9")
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d.save(p)
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loaded = ScanDefaults.load(p)
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assert loaded == d
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def test_missing_file_creates_defaults(tmp_path):
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p = tmp_path / "defaults.json"
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d = ScanDefaults.load(p)
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assert d == ScanDefaults()
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assert p.exists()
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def test_corrupt_file_falls_back(tmp_path):
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p = tmp_path / "defaults.json"
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p.write_text("{not json")
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assert ScanDefaults.load(p) == ScanDefaults()
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def test_unknown_keys_ignored(tmp_path):
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p = tmp_path / "defaults.json"
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p.write_text(json.dumps({"t3r_port": "/dev/ttyACM7", "laser_freq_hz": 20000.0}))
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d = ScanDefaults.load(p)
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assert d.t3r_port == "/dev/ttyACM7"
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assert d.helios_port == ScanDefaults().helios_port
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def test_helios_port_survives_partial_update(tmp_path):
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"""Regression: editing main-window ports must not clobber helios_port."""
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p = tmp_path / "defaults.json"
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ScanDefaults(helios_port="/dev/ttyUSB7").save(p)
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d = ScanDefaults.load(p)
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d.t3r_port = "/dev/ttyACM1" # what _persist_defaults does
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d.save(p)
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assert ScanDefaults.load(p).helios_port == "/dev/ttyUSB7"
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