def test_read_multiple_banks(self):
""" Test read from multiple banks. """
def read(_data):
""" Read dummy. """
if _data["bank"] == 1:
return {"data": "abc" + "\xff" * 200 + "def" + "\xff" * 48}
if _data["bank"] == 100:
return {
"data": "hello" + "\x00" * 100 + "world" + "\x00" * 146
}
else:
raise Exception("Wrong page")
eeprom_file = EepromFile(MasterCommunicator(read))
address1 = EepromAddress(1, 2, 10)
address2 = EepromAddress(100, 4, 10)
address3 = EepromAddress(100, 105, 5)
data = eeprom_file.read([address1, address2, address3])
self.assertEquals(3, len(data))
self.assertEquals(address1, data[address1].address)
self.assertEquals("c" + "\xff" * 9, data[address1].bytes)
self.assertEquals(address2, data[address2].address)
self.assertEquals("o" + "\x00" * 9, data[address2].bytes)
self.assertEquals(address3, data[address3].address)
self.assertEquals("world", data[address3].bytes)
def get_module_addresses(module_type):
"""
Get the addresses for the modules of the given type.
:param module_type: the type of the module (O, R, D, I, T, C)
:param module_type: chr
:returns: A list containing the addresses of the modules (strings of length 4).
"""
eeprom_file = EepromFile()
base_address = EepromAddress(0, 1, 2)
no_modules = eeprom_file.read([base_address])
modules = []
no_input_modules = ord(no_modules[base_address].bytes[0])
for i in range(no_input_modules):
address = EepromAddress(2 + i, 252, 1)
is_can = eeprom_file.read([address])[address].bytes == 'C'
address = EepromAddress(2 + i, 0, 4)
module = eeprom_file.read([address])[address].bytes
if not is_can or module[0] == 'C':
modules.append(module)
no_output_modules = ord(no_modules[base_address].bytes[1])
for i in range(no_output_modules):
address = EepromAddress(33 + i, 0, 4)
modules.append(eeprom_file.read([address])[address].bytes)
return [module for module in modules if module[0] == module_type]
def test_cache_invalidate(self):
""" Test the cache invalidation. """
state = {'count': 0}
def read(_):
""" Read dummy. """
if state['count'] == 0:
state['count'] = 1
return {"data": "\xff" * 256}
elif state['count'] == 1:
state['count'] = 2
return {"data": "\xff" * 256}
else:
raise Exception("Too many reads !")
communicator = MasterCommunicator(read, None)
eeprom_file = EepromFile(communicator)
address = EepromAddress(1, 0, 256)
read = eeprom_file.read([address])
self.assertEquals("\xff" * 256, read[address].bytes)
# Second read should come from cache.
address = EepromAddress(1, 0, 256)
read = eeprom_file.read([address])
self.assertEquals("\xff" * 256, read[address].bytes)
eeprom_file.invalidate_cache()
# Should be read from communicator, since cache is invalid
address = EepromAddress(1, 0, 256)
read = eeprom_file.read([address])
self.assertEquals("\xff" * 256, read[address].bytes)
self.assertEquals(2, state['count'])
def get_module_addresses(master_communicator, type):
""" Get the addresses for the modules of the given type.
:param master_communicator: used to read the addresses from the master eeprom.
:type master_communicator: MasterCommunicator
:param type: the type of the module (o, r, d, i, t, c)
:param type: chr
:returns: A list containing the addresses of the modules (strings of length 4).
"""
eeprom_file = EepromFile(master_communicator)
base_address = EepromAddress(0, 1, 2)
no_modules = eeprom_file.read([base_address])
modules = []
no_input_modules = ord(no_modules[base_address].bytes[0])
for i in range(no_input_modules):
address = EepromAddress(2 + i, 0, 4)
modules.append(eeprom_file.read([address])[address].bytes)
no_output_modules = ord(no_modules[base_address].bytes[1])
for i in range(no_output_modules):
address = EepromAddress(33 + i, 0, 4)
modules.append(eeprom_file.read([address])[address].bytes)
return [module for module in modules if module[0].lower() == type]
def test_from_data_dict(self):
""" Test from_data_dict. """
cdt = CompositeDataType([('one', EepromByte((1, 2))), ('two', EepromByte((1, 3)))])
addr1 = EepromAddress(1, 2, 1)
addr2 = EepromAddress(1, 3, 1)
data_dict = {addr1 : EepromData(addr1, str(chr(12))),
addr2 : EepromData(addr2, str(chr(34)))}
self.assertEquals([12, 34], cdt.from_data_dict(data_dict))
def test_from_eeprom_wrong_data(self):
""" Test from_eeprom_data with wrong data. """
try:
model3_data = [EepromData(EepromAddress(3, 4, 10), "hello worljkfdsjklsadfjklsadf"),
EepromData(EepromAddress(3, 14, 1), str(chr(123))),
EepromData(EepromAddress(3, 15, 2), str(chr(1) + chr(200)))]
Model3.from_eeprom_data(model3_data)
self.fail("Should have receive TypeError.")
except TypeError as type_error:
self.assertTrue("Length" in str(type_error))
def test_to_eeprom_data(self):
""" Test to_eeprom_data. """
cdt = CompositeDataType([('one', EepromByte((1, 2))), ('two', EepromByte((1, 3)))])
data = cdt.to_eeprom_data([34, 12])
self.assertEquals(2, len(data))
self.assertEquals(EepromAddress(1, 2, 1), data[0].address)
self.assertEquals(str(chr(34)), data[0].bytes)
self.assertEquals(EepromAddress(1, 3, 1), data[1].address)
self.assertEquals(str(chr(12)), data[1].bytes)
def test_from_eeprom_data(self):
""" Test from_eeprom_data. """
model1_data = [EepromData(EepromAddress(1, 3, 100), "test" + "\xff" * 96)]
model1 = Model1.from_eeprom_data(model1_data, 1)
self.assertEquals(1, model1['id'])
self.assertEquals("test", model1['name'])
model2_data = [EepromData(EepromAddress(3, 4, 100), "hello world" + "\xff" * 89)]
model2 = Model2.from_eeprom_data(model2_data)
self.assertEquals("hello world", model2['name'])
model3_data = [EepromData(EepromAddress(3, 4, 10), "hello worl"),
EepromData(EepromAddress(3, 14, 1), str(chr(123))),
EepromData(EepromAddress(3, 15, 2), str(chr(200) + chr(1)))]
model3 = Model3.from_eeprom_data(model3_data)
self.assertEquals("hello worl", model3['name'])
self.assertEquals(123, model3['link'])
self.assertEquals(456, model3['out'])
model6_data = [EepromData(EepromAddress(3, 4, 10), "test" + "\xff" * 6),
EepromData(EepromAddress(3, 14, 1), str(chr(1))),
EepromData(EepromAddress(3, 15, 2), str(chr(2) + chr(0)))]
model6 = Model6.from_eeprom_data(model6_data)
self.assertEquals("test", model6['name'])
self.assertEquals([1, 2], model6['status'])
def test_write_multiple_fields(self):
""" Test writing multiple fields to the eeprom file. """
done = {}
def read(data):
""" Read dummy. """
if data["bank"] == 1:
done['read1'] = True
return {"data": "\xff" * 256}
elif data["bank"] == 2:
done['read2'] = True
return {"data": "\x00" * 256}
else:
raise Exception("Wrong page")
def write(data):
""" Write dummy. """
if 'write1' not in done:
done['write1'] = True
self.assertEquals(1, data["bank"])
self.assertEquals(2, data["address"])
self.assertEquals("abc", data["data"])
elif 'write2' not in done:
done['write2'] = True
self.assertEquals(2, data["bank"])
self.assertEquals(123, data["address"])
self.assertEquals("More bytes", data["data"])
elif 'write3' not in done:
done['write3'] = True
self.assertEquals(2, data["bank"])
self.assertEquals(133, data["address"])
self.assertEquals(" than 10", data["data"])
else:
raise Exception("Too many writes")
communicator = MasterCommunicator(read, write)
eeprom_file = EepromFile(communicator)
eeprom_file.write([
EepromData(EepromAddress(1, 2, 3), "abc"),
EepromData(EepromAddress(2, 123, 18), "More bytes than 10")
])
self.assertTrue('read1' in done)
self.assertTrue('read2' in done)
self.assertTrue('write1' in done)
self.assertTrue('write2' in done)
self.assertTrue('write3' in done)
def test_write_single_field(self):
""" Write a single field to the eeprom file. """
done = {}
def read(data):
""" Read dummy. """
if data["bank"] == 1:
done['read1'] = True
return {"data": "\xff" * 256}
else:
raise Exception("Wrong page")
def write(data):
""" Write dummy. """
self.assertEquals(1, data["bank"])
self.assertEquals(2, data["address"])
self.assertEquals("abc", data["data"])
done['write'] = True
communicator = MasterCommunicator(read, write)
eeprom_file = EepromFile(communicator)
eeprom_file.write([EepromData(EepromAddress(1, 2, 3), "abc")])
self.assertTrue('read1' in done)
self.assertTrue('write' in done)
def test_from_eeprom_wrong_address(self):
""" Test from_eeprom_data with wrong address. """
try:
model1_data = [EepromData(EepromAddress(3, 4, 100), "test" + "\xff" * 96)]
Model1.from_eeprom_data(model1_data, 1)
self.fail("Should have receive KeyError.")
except KeyError as key_error:
self.assertTrue("(B1 A3 L100)" in str(key_error))
def test_cache_write(self):
""" Test the eeprom cache on writing. """
state = {'read': 0, 'write': 0}
def read(_):
""" Read dummy. """
if state['read'] == 0:
state['read'] = 1
return {"data": "\xff" * 256}
else:
raise Exception("Too many reads !")
def write(data):
""" Write dummy. """
if state['write'] == 0:
self.assertEquals(1, data["bank"])
self.assertEquals(100, data["address"])
self.assertEquals("\x00" * 10, data["data"])
state['write'] = 1
elif state['write'] == 1:
self.assertEquals(1, data["bank"])
self.assertEquals(110, data["address"])
self.assertEquals("\x00" * 10, data["data"])
state['write'] = 2
else:
raise Exception("Too many writes !")
communicator = MasterCommunicator(read, write)
eeprom_file = EepromFile(communicator)
address = EepromAddress(1, 0, 256)
read = eeprom_file.read([address])
self.assertEquals("\xff" * 256, read[address].bytes)
eeprom_file.write([EepromData(EepromAddress(1, 100, 20), "\x00" * 20)])
address = EepromAddress(1, 0, 256)
read = eeprom_file.read([address])
self.assertEquals("\xff" * 100 + "\x00" * 20 + "\xff" * 136,
read[address].bytes)
self.assertEquals(1, state['read'])
self.assertEquals(2, state['write'])
def test_cache_write_exception(self):
""" The cache should be invalidated if a write fails. """
state = {'read': 0, 'write': 0}
def read(_):
""" Read dummy. """
if state['read'] == 0:
state['read'] = 1
return {"data": "\xff" * 256}
elif state['read'] == 1:
state['read'] = 2
return {"data": "\xff" * 256}
else:
raise Exception("Too many reads !")
def write(_):
""" Write dummy. """
state['write'] += 1
raise Exception("write fails...")
communicator = MasterCommunicator(read, write)
eeprom_file = EepromFile(communicator)
address = EepromAddress(1, 0, 256)
read = eeprom_file.read([address])
self.assertEquals("\xff" * 256, read[address].bytes)
try:
eeprom_file.write(
[EepromData(EepromAddress(1, 100, 20), "\x00" * 20)])
self.fail("Should not get here !")
except Exception:
pass
address = EepromAddress(1, 0, 256)
read = eeprom_file.read([address])
self.assertEquals("\xff" * 256, read[address].bytes)
self.assertEquals(2, state['read'])
self.assertEquals(1, state['write'])
def test_cache(self):
""" Test the caching of banks. """
state = { 'count' : 0 }
def read(data):
""" Read dummy. """
if state['count'] == 0:
state['count'] = 1
return {"data" : "\xff" * 256}
else:
raise Exception("Too many reads !")
communicator = MasterCommunicatorDummy(read, None)
eeprom_file = EepromFile(communicator)
read = eeprom_file.read([EepromAddress(1, 0, 256)])
self.assertEquals("\xff" * 256, read[0].bytes)
# Second read should come from cache, if read is called
# an exception will be thrown.
read = eeprom_file.read([EepromAddress(1, 0, 256)])
self.assertEquals("\xff" * 256, read[0].bytes)
def test_read_one_bank_two_addresses(self):
""" Test read from one bank with two addresses. """
def read(_data):
""" Read dummy """
if _data["bank"] == 1:
return {"data": "abc" + "\xff" * 200 + "def" + "\xff" * 48}
else:
raise Exception("Wrong page")
eeprom_file = EepromFile(MasterCommunicator(read))
address1 = EepromAddress(1, 2, 10)
address2 = EepromAddress(1, 203, 4)
data = eeprom_file.read([address1, address2])
self.assertEquals(2, len(data))
self.assertEquals(address1, data[address1].address)
self.assertEquals("c" + "\xff" * 9, data[address1].bytes)
self.assertEquals(address2, data[address2].address)
self.assertEquals("def\xff", data[address2].bytes)
def test_write_multiple_fields_same_batch(self):
""" Test writing multiple fields to the eeprom file. """
done = {}
def read(data):
""" Read dummy. """
if data["bank"] == 1:
done['read'] = True
return {"data": "\xff" * 256}
else:
raise Exception("Wrong page")
def write(data):
""" Write dummy. """
if 'write1' not in done:
done['write1'] = True
self.assertEquals(1, data["bank"])
self.assertEquals(2, data["address"])
self.assertEquals("abc\xff\xff\xffdefg", data["data"])
elif 'write2' not in done:
done['write2'] = True
self.assertEquals(1, data["bank"])
self.assertEquals(12, data["address"])
self.assertEquals("hijklmn", data["data"])
else:
raise Exception("Too many writes")
communicator = MasterCommunicator(read, write)
eeprom_file = EepromFile(communicator)
eeprom_file.write([
EepromData(EepromAddress(1, 2, 3), "abc"),
EepromData(EepromAddress(1, 8, 11), "defghijklmn")
])
self.assertTrue('read' in done)
self.assertTrue('write1' in done)
self.assertTrue('write2' in done)
def test_cache(self):
""" Test the caching of banks. """
state = {'count': 0}
def read(_):
""" Read dummy. """
if state['count'] == 0:
state['count'] = 1
return {"data": "\xff" * 256}
else:
raise Exception("Too many reads !")
SetUpTestInjections(master_communicator=MasterCommunicator(read))
eeprom_file = EepromFile()
address = EepromAddress(1, 0, 256)
read = eeprom_file.read([address])
self.assertEquals("\xff" * 256, read[address].bytes)
# Second read should come from cache, if read is called
# an exception will be thrown.
address = EepromAddress(1, 0, 256)
read = eeprom_file.read([address])
self.assertEquals("\xff" * 256, read[address].bytes)
def test_read_one_bank_one_address(self):
""" Test read from one bank with one address """
def read(_data):
""" Read dummy. """
if _data["bank"] == 1:
return {"data": "abc" + "\xff" * 200 + "def" + "\xff" * 48}
else:
raise Exception("Wrong page")
eeprom_file = EepromFile(MasterCommunicator(read))
address = EepromAddress(1, 0, 3)
data = eeprom_file.read([address])
self.assertEquals(1, len(data))
self.assertEquals(address, data[address].address)
self.assertEquals("abc", data[address].bytes)
def test_write_end_of_page(self):
""" Test writing an address that is close (< BATCH_SIZE) to the end of the page. """
done = {}
def read(_):
""" Read dummy. """
return {"data": "\x00" * 256}
def write(data):
""" Write dummy. """
self.assertEquals(117, data["bank"])
self.assertEquals(248, data["address"])
self.assertEquals("test\xff\xff\xff\xff", data["data"])
done['done'] = True
SetUpTestInjections(master_communicator=MasterCommunicator(read, write))
eeprom_file = EepromFile()
eeprom_file.write([EepromData(EepromAddress(117, 248, 8), "test\xff\xff\xff\xff")])
self.assertTrue(done['done'])
class Model4(EepromModel):
""" Dummy model with a dynamic maximum id. """
id = EepromId(10, address=EepromAddress(0, 0, 1), multiplier=2)
name = EepromString(10, lambda id: (1, 2 + id * 10))
