circuitpython/tests/basics/struct2.py

44 lines
887 B
Python

# test ustruct with a count specified before the type
try:
import ustruct as struct
except:
try:
import struct
except ImportError:
import sys
print("SKIP")
sys.exit()
print(struct.calcsize('0s'))
print(struct.unpack('0s', b''))
print(struct.pack('0s', b'123'))
print(struct.calcsize('2s'))
print(struct.unpack('2s', b'12'))
print(struct.pack('2s', b'123'))
print(struct.calcsize('2H'))
print(struct.unpack('<2H', b'1234'))
print(struct.pack('<2H', 258, 515))
print(struct.calcsize('0s1s0H2H'))
print(struct.unpack('<0s1s0H2H', b'01234'))
print(struct.pack('<0s1s0H2H', b'abc', b'abc', 258, 515))
# check that unknown types raise an exception
try:
struct.unpack('z', b'1')
except:
print('Exception')
try:
struct.pack('z', (b'1',))
except:
print('Exception')
try:
struct.calcsize('0z')
except:
print('Exception')