OVMS3-idf/components/partition_table/tests/gen_esp32part_tests.py

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2016-08-17 15:08:22 +00:00
#!/usr/bin/env python
import unittest
import struct
import csv
import sys
import subprocess
import tempfile
import os
sys.path.append("..")
from gen_esp32part import *
SIMPLE_CSV = """
# Name,Type,SubType,Offset,Size
factory,0,2,65536,1048576
"""
LONGER_BINARY_TABLE = ""
# type 0x00, subtype 0x00,
# offset 64KB, size 1MB
LONGER_BINARY_TABLE += "\xAA\x50\x00\x00" + \
"\x00\x00\x01\x00" + \
"\x00\x00\x10\x00" + \
"factory\0" + ("\0"*8) + \
"\x00\x00\x00\x00"
# type 0x01, subtype 0x20,
# offset 0x110000, size 128KB
LONGER_BINARY_TABLE += "\xAA\x50\x01\x20" + \
"\x00\x00\x11\x00" + \
"\x00\x02\x00\x00" + \
"data" + ("\0"*12) + \
"\x00\x00\x00\x00"
# type 0x10, subtype 0x00,
# offset 0x150000, size 1MB
LONGER_BINARY_TABLE += "\xAA\x50\x10\x00" + \
"\x00\x00\x15\x00" + \
"\x00\x10\x00\x00" + \
"second" + ("\0"*10) + \
"\x00\x00\x00\x00"
def _strip_trailing_ffs(binary_table):
while binary_table.endswith("\xFF"):
binary_table = binary_table[0:len(binary_table)-1]
return binary_table
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class CSVParserTests(unittest.TestCase):
def test_simple_partition(self):
table = PartitionTable.from_csv(SIMPLE_CSV)
self.assertEqual(len(table), 1)
self.assertEqual(table[0].name, "factory")
self.assertEqual(table[0].type, 0)
self.assertEqual(table[0].subtype, 2)
self.assertEqual(table[0].offset, 65536)
self.assertEqual(table[0].size, 1048576)
def test_require_type(self):
csv = """
# Name,Type, SubType,Offset,Size
ihavenotype,
"""
with self.assertRaisesRegexp(InputError, "type"):
PartitionTable.from_csv(csv)
def test_type_subtype_names(self):
csv_magicnumbers = """
# Name, Type, SubType, Offset, Size
myapp, 0, 0,, 0x100000
myota_0, 0, 0x10,, 0x100000
myota_1, 0, 0x11,, 0x100000
myota_15, 0, 0x1f,, 0x100000
mytest, 0, 0x20,, 0x100000
myota_status, 1, 0,, 0x100000
"""
csv_nomagicnumbers = """
# Name, Type, SubType, Offset, Size
myapp, app, factory,, 0x100000
myota_0, app, ota_0,, 0x100000
myota_1, app, ota_1,, 0x100000
myota_15, app, ota_15,, 0x100000
mytest, app, test,, 0x100000
myota_status, data, ota,, 0x100000
"""
# make two equivalent partition tables, one using
# magic numbers and one using shortcuts. Ensure they match
magic = PartitionTable.from_csv(csv_magicnumbers)
magic.verify()
nomagic = PartitionTable.from_csv(csv_nomagicnumbers)
nomagic.verify()
self.assertEqual(nomagic["myapp"].type, 0)
self.assertEqual(nomagic["myapp"].subtype, 0)
self.assertEqual(nomagic["myapp"], magic["myapp"])
self.assertEqual(nomagic["myota_0"].type, 0)
self.assertEqual(nomagic["myota_0"].subtype, 0x10)
self.assertEqual(nomagic["myota_0"], magic["myota_0"])
self.assertEqual(nomagic["myota_15"], magic["myota_15"])
self.assertEqual(nomagic["mytest"], magic["mytest"])
self.assertEqual(nomagic["myota_status"], magic["myota_status"])
#self.assertEqual(nomagic.to_binary(), magic.to_binary())
def test_unit_suffixes(self):
csv = """
# Name, Type, Subtype, Offset, Size
one_megabyte, app, factory, 32k, 1M
"""
t = PartitionTable.from_csv(csv)
t.verify()
self.assertEqual(t[0].offset, 32*1024)
self.assertEqual(t[0].size, 1*1024*1024)
def test_default_offsets(self):
csv = """
# Name, Type, Subtype, Offset, Size
first, app, factory,, 1M
second, data, 0x15,, 1M
minidata, data, 0x40,, 32K
otherapp, app, factory,, 1M
"""
t = PartitionTable.from_csv(csv)
# 'first'
self.assertEqual(t[0].offset, 0x010000) # 64KB boundary as it's an app image
self.assertEqual(t[0].size, 0x100000) # Size specified in CSV
# 'second'
self.assertEqual(t[1].offset, 0x110000) # prev offset+size
self.assertEqual(t[1].size, 0x100000) # Size specified in CSV
# 'minidata'
self.assertEqual(t[2].offset, 0x210000)
# 'otherapp'
self.assertEqual(t[3].offset, 0x220000) # 64KB boundary as it's an app image
def test_negative_size_to_offset(self):
csv = """
# Name, Type, Subtype, Offset, Size
first, app, factory, 0x10000, -2M
second, data, 0x15, , 1M
"""
t = PartitionTable.from_csv(csv)
t.verify()
# 'first'
self.assertEqual(t[0].offset, 0x10000) # in CSV
self.assertEqual(t[0].size, 0x200000 - t[0].offset) # Up to 2M
# 'second'
self.assertEqual(t[1].offset, 0x200000) # prev offset+size
def test_overlapping_offsets_fail(self):
csv = """
first, app, factory, 0x100000, 2M
second, app, ota_0, 0x200000, 1M
"""
t = PartitionTable.from_csv(csv)
with self.assertRaisesRegexp(InputError, "overlap"):
t.verify()
class BinaryOutputTests(unittest.TestCase):
def test_binary_entry(self):
csv = """
first, 0x30, 0xEE, 0x100400, 0x300000
"""
t = PartitionTable.from_csv(csv)
tb = _strip_trailing_ffs(t.to_binary())
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self.assertEqual(len(tb), 32)
self.assertEqual('\xAA\x50', tb[0:2]) # magic
self.assertEqual('\x30\xee', tb[2:4]) # type, subtype
eo, es = struct.unpack("<LL", tb[4:12])
self.assertEqual(eo, 0x100400) # offset
self.assertEqual(es, 0x300000) # size
def test_multiple_entries(self):
csv = """
first, 0x30, 0xEE, 0x100400, 0x300000
second,0x31, 0xEF, , 0x100000
"""
t = PartitionTable.from_csv(csv)
tb = _strip_trailing_ffs(t.to_binary())
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self.assertEqual(len(tb), 64)
self.assertEqual('\xAA\x50', tb[0:2])
self.assertEqual('\xAA\x50', tb[32:34])
class BinaryParserTests(unittest.TestCase):
def test_parse_one_entry(self):
# type 0x30, subtype 0xee,
# offset 1MB, size 2MB
entry = "\xAA\x50\x30\xee" + \
"\x00\x00\x10\x00" + \
"\x00\x00\x20\x00" + \
"0123456789abc\0\0\0" + \
"\x00\x00\x00\x00"
# verify that parsing 32 bytes as a table
# or as a single Definition are the same thing
t = PartitionTable.from_binary(entry)
self.assertEqual(len(t), 1)
t[0].verify()
e = PartitionDefinition.from_binary(entry)
self.assertEqual(t[0], e)
e.verify()
self.assertEqual(e.type, 0x30)
self.assertEqual(e.subtype, 0xEE)
self.assertEqual(e.offset, 0x100000)
self.assertEqual(e.size, 0x200000)
self.assertEqual(e.name, "0123456789abc")
def test_multiple_entries(self):
t = PartitionTable.from_binary(LONGER_BINARY_TABLE)
t.verify()
self.assertEqual(3, len(t))
self.assertEqual(t[0].type, PartitionDefinition.APP_TYPE)
self.assertEqual(t[0].name, "factory")
self.assertEqual(t[1].type, PartitionDefinition.DATA_TYPE)
self.assertEqual(t[1].name, "data")
self.assertEqual(t[2].type, 0x10)
self.assertEqual(t[2].name, "second")
round_trip = _strip_trailing_ffs(t.to_binary())
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self.assertEqual(round_trip, LONGER_BINARY_TABLE)
def test_bad_magic(self):
bad_magic = "OHAI" + \
"\x00\x00\x10\x00" + \
"\x00\x00\x20\x00" + \
"0123456789abc\0\0\0" + \
"\x00\x00\x00\x00"
with self.assertRaisesRegexp(InputError, "Invalid magic bytes"):
PartitionTable.from_binary(bad_magic)
def test_bad_length(self):
bad_length = "OHAI" + \
"\x00\x00\x10\x00" + \
"\x00\x00\x20\x00" + \
"0123456789"
with self.assertRaisesRegexp(InputError, "32 bytes"):
PartitionTable.from_binary(bad_length)
class CSVOutputTests(unittest.TestCase):
def test_output_simple_formatting(self):
table = PartitionTable.from_csv(SIMPLE_CSV)
as_csv = table.to_csv(True)
c = csv.reader(as_csv.split("\n"))
# first two lines should start with comments
self.assertEqual(c.next()[0][0], "#")
self.assertEqual(c.next()[0][0], "#")
row = c.next()
self.assertEqual(row[0], "factory")
self.assertEqual(row[1], "0")
self.assertEqual(row[2], "2")
self.assertEqual(row[3], "0x10000") # reformatted as hex
self.assertEqual(row[4], "0x100000") # also hex
# round trip back to a PartitionTable and check is identical
roundtrip = PartitionTable.from_csv(as_csv)
self.assertEqual(roundtrip, table)
def test_output_smart_formatting(self):
table = PartitionTable.from_csv(SIMPLE_CSV)
as_csv = table.to_csv(False)
c = csv.reader(as_csv.split("\n"))
# first two lines should start with comments
self.assertEqual(c.next()[0][0], "#")
self.assertEqual(c.next()[0][0], "#")
row = c.next()
self.assertEqual(row[0], "factory")
self.assertEqual(row[1], "app")
self.assertEqual(row[2], "2")
self.assertEqual(row[3], "0x10000")
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self.assertEqual(row[4], "1M")
# round trip back to a PartitionTable and check is identical
roundtrip = PartitionTable.from_csv(as_csv)
self.assertEqual(roundtrip, table)
class CommandLineTests(unittest.TestCase):
def test_basic_cmdline(self):
try:
binpath = tempfile.mktemp()
csvpath = tempfile.mktemp()
# copy binary contents to temp file
with open(binpath, 'w') as f:
f.write(LONGER_BINARY_TABLE)
# run gen_esp32part.py to convert binary file to CSV
subprocess.check_call([sys.executable, "../gen_esp32part.py",
binpath, csvpath])
# reopen the CSV and check the generated binary is identical
with open(csvpath, 'r') as f:
from_csv = PartitionTable.from_csv(f.read())
self.assertEqual(_strip_trailing_ffs(from_csv.to_binary()), LONGER_BINARY_TABLE)
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# run gen_esp32part.py to conver the CSV to binary again
subprocess.check_call([sys.executable, "../gen_esp32part.py",
csvpath, binpath])
# assert that file reads back as identical
with open(binpath, 'rb') as f:
binary_readback = f.read()
binary_readback = _strip_trailing_ffs(binary_readback)
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self.assertEqual(binary_readback, LONGER_BINARY_TABLE)
finally:
for path in binpath, csvpath:
try:
os.remove(path)
except OSError:
pass
if __name__ =="__main__":
unittest.main()