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firestar5683
40 lines
1.4 KiB
Python
40 lines
1.4 KiB
Python
from openpilot.system.hardware.chestnut import flash as chestnut_flash
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def test_usb2_flash_reads_are_limited_to_ep0_packet_size(tmp_path, monkeypatch):
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(tmp_path / "speed").write_text("480\n")
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monkeypatch.setattr(chestnut_flash, "find_chestnut", lambda: (str(tmp_path), ("3801", "0001"), "custom test-CLEAN"))
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monkeypatch.setattr(chestnut_flash, "claim_interface", lambda _: 123)
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flash = chestnut_flash.Flash()
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flash.connect()
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assert flash.max_register_read_size == 64
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def test_superspeed_flash_keeps_full_register_reads(tmp_path, monkeypatch):
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(tmp_path / "speed").write_text("5000\n")
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monkeypatch.setattr(chestnut_flash, "find_chestnut", lambda: (str(tmp_path), ("3801", "0001"), "custom test-CLEAN"))
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monkeypatch.setattr(chestnut_flash, "claim_interface", lambda _: 123)
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flash = chestnut_flash.Flash()
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flash.connect()
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assert flash.max_register_read_size == chestnut_flash.MAX_REGISTER_READ_SIZE
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def test_flash_read_uses_negotiated_register_chunk_size(monkeypatch):
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flash = chestnut_flash.Flash()
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flash.max_register_read_size = 64
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reads = []
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monkeypatch.setattr(flash, "transaction", lambda *args, **kwargs: None)
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def reg_read(addr, length=1):
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reads.append((addr, length))
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return bytes(length)
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monkeypatch.setattr(flash, "reg_read", reg_read)
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assert flash.read(0, 130) == bytes(130)
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assert reads == [(0x7000, 64), (0x7040, 64), (0x7080, 2)]
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