diff options
| -rw-r--r-- | Lib/test/test_struct.py | 83 |
1 files changed, 73 insertions, 10 deletions
diff --git a/Lib/test/test_struct.py b/Lib/test/test_struct.py index 77cda29..3d54314 100644 --- a/Lib/test/test_struct.py +++ b/Lib/test/test_struct.py @@ -1,3 +1,4 @@ +from test_support import TestFailed, verbose import struct ## import pdb @@ -7,18 +8,19 @@ def simple_err(func, *args): except struct.error: pass else: - print 'expected struct.error not caught' + raise TestFailed, "%s%s did not raise struct.error" % ( + func.__name__, args) ## pdb.set_trace() simple_err(struct.calcsize, 'Q') sz = struct.calcsize('i') if sz * 3 <> struct.calcsize('iii'): - print 'inconsistent sizes' + raise TestFailed, 'inconsistent sizes' sz = struct.calcsize('cbhilfd') if sz * 3 <> struct.calcsize('3c3b3h3i3l3f3d'): - print 'inconsistent sizes' + raise TestFailed, 'inconsistent sizes' simple_err(struct.pack, 'iii', 3) simple_err(struct.pack, 'i', 3, 3, 3) @@ -29,16 +31,77 @@ simple_err(struct.unpack, 'iii', s) simple_err(struct.unpack, 'i', s) c = 'a' -b = -1 +b = 1 h = 255 i = 65535 l = 65536 f = 3.1415 d = 3.1415 -s = struct.pack('xcbhilfd', c, b, h, i, l, f, d) -cp, bp, hp, ip, lp, fp, dp = struct.unpack('xcbhilfd', s) -if cp <> c or bp <> b or hp <> h or ip <> i or lp <> l or \ - int(100 * fp) <> int(100 * f) or int(100 * dp) <> int(100 * d): - # ^^^ calculate only to two decimal places - print 'unpack/pack not transitive' +for format in ('xcbhilfd', 'xcBHILfd', '@xsbhilfd'): + s = struct.pack(format, c, b, h, i, l, f, d) + cp, bp, hp, ip, lp, fp, dp = struct.unpack(format, s) + if (cp <> c or bp <> b or hp <> h or ip <> i or lp <> l or + int(100 * fp) <> int(100 * f) or int(100 * dp) <> int(100 * d)): + # ^^^ calculate only to two decimal places + raise TestFailed, "unpack/pack not transitive (%s, %s)" % ( + str(format), str((cp, bp, hp, ip, lp, fp, dp))) + +# Test some of the new features + +# (format, argument, big-endian result, little-endian result, asymmetric) +tests = [ + ('c', 'a', 'a', 'a', 0), + ('xc', 'a', '\0a', '\0a', 0), + ('cx', 'a', 'a\0', 'a\0', 0), + ('s', 'a', 'a', 'a', 0), + ('0s', 'helloworld', '', '', 1), + ('1s', 'helloworld', 'h', 'h', 1), + ('9s', 'helloworld', 'helloworl', 'helloworl', 1), + ('10s', 'helloworld', 'helloworld', 'helloworld', 0), + ('11s', 'helloworld', 'helloworld\0', 'helloworld\0', 1), + ('20s', 'helloworld', 'helloworld'+10*'\0', 'helloworld'+10*'\0', 1), + ('b', 7, '\7', '\7', 0), + ('b', -7, '\371', '\371', 0), + ('B', 7, '\7', '\7', 0), + ('B', 249, '\371', '\371', 0), + ('h', 700, '\002\274', '\274\002', 0), + ('h', -700, '\375D', 'D\375', 0), + ('H', 700, '\002\274', '\274\002', 0), + ('H', 0x10000-700, '\375D', 'D\375', 0), + ('i', 70000000, '\004,\035\200', '\200\035,\004', 0), + ('i', -70000000, '\373\323\342\200', '\200\342\323\373', 0), + ('I', 70000000L, '\004,\035\200', '\200\035,\004', 0), + ('I', 0x100000000L-70000000, '\373\323\342\200', '\200\342\323\373', 0), + ('l', 70000000, '\004,\035\200', '\200\035,\004', 0), + ('l', -70000000, '\373\323\342\200', '\200\342\323\373', 0), + ('L', 70000000L, '\004,\035\200', '\200\035,\004', 0), + ('L', 0x100000000L-70000000, '\373\323\342\200', '\200\342\323\373', 0), +] + +def badpack(fmt, arg, got, exp): + return + +def badunpack(fmt, arg, got, exp): + return "unpack(%s, %s) -> (%s,) # expected (%s,)" % ( + `fmt`, `arg`, `got`, `exp`) + +isbigendian = struct.pack('=h', 1) == '\0\1' + +for fmt, arg, big, lil, asy in tests: + if verbose: + print `fmt`, `arg`, `big`, `lil` + for (xfmt, exp) in [('>'+fmt, big), ('!'+fmt, big), ('<'+fmt, lil), + ('='+fmt, isbigendian and big or lil)]: + res = struct.pack(xfmt, arg) + if res != exp: + raise TestFailed, "pack(%s, %s) -> %s # expected %s" % ( + `fmt`, `arg`, `res`, `exp`) + n = struct.calcsize(xfmt) + if n != len(res): + raise TestFailed, "calcsize(%s) -> %d # expected %d" % ( + `xfmt`, n, len(res)) + rev = struct.unpack(xfmt, res)[0] + if rev != arg and not asy: + raise TestFailed, "unpack(%s, %s) -> (%s,) # expected (%s,)" % ( + `fmt`, `res`, `rev`, `arg`) |