mirror of
https://github.com/RetroPortingToolKit/psxrecomp
synced 2026-10-28 10:59:16 -04:00
Alex Vanderveen
0371952721
Tracing 0x800E2718..0x800E2C60 across 2 frames of the effect recorded nothing, consistently. That is a real result -- the table is STATIC while the effect plays, which removes the phase caveat from the finding that psx-runtime holds 216 distinct colour words there where DuckStation holds 5, at the same addresses, 1067/1712 bytes differing. But the old message said 'nothing wrote to this range... the code that fills it is not running', which reads as 'nothing ever writes this' and sends you looking for a missing writer. A table filled once at scene load is simply not written during the effect that reads it. --watch N traces free-running so the fill can be caught by walking into the scene with the trace already armed. The empty-result messages now distinguish the two cases, and the watched one names the remaining possibility: a DMA fill writing RAM directly is not visible to a trace built on CPU store hooks. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
44 lines
1.7 KiB
Python
44 lines
1.7 KiB
Python
"""Tests for range_writers' free-running watch and its empty-result message.
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A table that is static while an effect plays is not written during it.
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Stepping two frames there proves only that -- and the old message read as
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"nothing ever writes this", which sent the investigation looking for a
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missing writer instead of tracing the scene load where the fill happens.
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"""
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import os
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import sys
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import unittest
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sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
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import range_writers # noqa: E402
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SRC = open(os.path.join(os.path.dirname(os.path.dirname(
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os.path.abspath(__file__))), "range_writers.py")).read()
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class WatchOptionTest(unittest.TestCase):
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def test_watch_flag_exists_and_defaults_off(self):
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decl = SRC.split('ap.add_argument("--watch"', 1)[1].split(")", 1)[0]
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self.assertIn("default=0.0", decl)
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def test_watch_path_runs_free_not_stepped(self):
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branch = SRC.split("if args.watch > 0:", 1)[1].split("else:", 1)[0]
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self.assertIn('conn.cmd("continue")', branch)
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self.assertNotIn('conn.cmd("step"', branch)
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def test_stepped_path_still_steps(self):
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branch = SRC.split("if args.watch > 0:", 1)[1].split("else:", 1)[1]
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self.assertIn('conn.cmd("step"', branch)
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class EmptyMessageTest(unittest.TestCase):
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def test_stepped_empty_says_static_not_never_written(self):
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msg = SRC.split("That means it is STATIC", 1)
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self.assertEqual(len(msg), 2, "static wording missing")
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self.assertIn("--watch N", SRC)
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def test_watched_empty_names_dma_as_the_reason(self):
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self.assertIn("not visible to this trace", SRC)
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self.assertIn("DMA fill", SRC)
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