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Test:adds support for breaking crc

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This commit is contained in:
Simon Albinsson
2018-04-12 21:22:14 +00:00
parent a38a71d186
commit 5c6086d0e2
1 changed files with 8 additions and 3 deletions
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9
tests/mock_smbus2.py
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@@ -11,15 +11,16 @@ answers = {
(0x20, 0x03): None ,#IAQ_INIT (0x20, 0x03): None ,#IAQ_INIT
(0x20, 0x08): [1, 144, 76, 0, 6, 39] ,#IAQ_MEASURE (0x20, 0x08): [1, 144, 76, 0, 6, 39] ,#IAQ_MEASURE
(0x20, 0x32): add_crc([0xD4,0x00]) ,#IAQ_SELFTEST (0x20, 0x32): add_crc([0xD4,0x00]) ,#IAQ_SELFTEST
(0x20, 0x15): add_crc([0x00,0x00])*2 ,#GET_BASELINE Invalid, should be more realistic data.. (0x20, 0x15): [133, 152, 85, 138, 32, 202] ,#GET_BASELINE
(0x20, 0x1e): None,#SET_BASELINE (0x20, 0x1e): None,#SET_BASELINE
} }
class MockSMBus: class MockSMBus:
def __init__(s): def __init__(s,break_crc=False):
s.status=None s.status=None
s.last=None s.last=None
s.addr=None s.addr=None
s._break_crc=break_crc
def i2c_rdwr(s,*msgs): def i2c_rdwr(s,*msgs):
for m in msgs: for m in msgs:
@@ -38,6 +39,10 @@ class MockSMBus:
raise AssertionError("tired to read before write") raise AssertionError("tired to read before write")
for i in range(len(s.status)): for i in range(len(s.status)):
msg.buf[i]=chr(s.status[i]) msg.buf[i]=chr(s.status[i])
if s._break_crc and i%3 == 2:
msg.buf[i]=msg.buf[i]^42
def _process_write(s,msg): def _process_write(s,msg):
s.status = answers[tuple(msg)] s.status = answers[tuple(msg)]
s.last=msg s.last=msg