def setUp(self):
"""
Create a parser instance.
"""
self.parser = Parser()
class ParseTestCase(TestCase):
"""
Test parsing various data.
"""
def setUp(self):
"""
Create a parser instance.
"""
self.parser = Parser()
def test_parseAtom(self):
"""
Try to parse the binary representation of an atom.
"""
self.assertEquals(
self.parser.binaryToTerm("d\x00\x03foo"), (Atom("foo"), ""))
def test_parseString(self):
"""
Try to parse the binary representation of a short string object.
"""
self.assertEquals(
self.parser.binaryToTerm("k\x00\x04dang"),
([100, 97, 110, 103], ""))
def test_parseNil(self):
"""
Try to parse NIL value.
"""
self.assertEquals(self.parser.binaryToTerm("j"), (List([]), ""))
def test_parseList(self):
"""
Try to parse a list of integers.
"""
self.assertEquals(
self.parser.binaryToTerm("l\x00\x00\x00\x02a\x01a\x02j"),
(List([1, 2]), ""))
def test_parseSmallTuple(self):
"""
Test parsing a small tuple of integer values.
"""
self.assertEquals(
self.parser.binaryToTerm("h\x02a\x05a\x04"), (Tuple([5, 4]), ""))
def test_parseLargeTuple(self):
"""
Try parsing a large tuple of integers.
"""
self.assertEquals(
self.parser.binaryToTerm("i\x00\x00\x00\x02a\x05a\x04"),
(Tuple([5, 4]), ""))
def test_parseLargeBig(self):
"""
Try parsing a positive and negative big integer. The only difference
between the two binary values is the sign bit.
"""
self.assertEquals(
self.parser.binaryToTerm("o\x00\x00\x00\x04\x00\x01\x02\x03\x04"),
(Integer(67305985), ""))
self.assertEquals(
self.parser.binaryToTerm("o\x00\x00\x00\x04\x01\x01\x02\x03\x04"),
(Integer(-67305985), ""))
def test_parseSmallBig(self):
"""
Try parsing a positive and negative small big integer. The only
difference between the two binary values is the sign bit.
"""
self.assertEquals(self.parser.binaryToTerm(
"n\x04\x00\x01\x02\x03\x04"), (Integer(67305985), ""))
self.assertEquals(self.parser.binaryToTerm(
"n\x04\x01\x01\x02\x03\x04"), (Integer(-67305985), ""))
def test_parseFloat(self):
"""
Test parsing a float null terminated.
"""
self.assertEquals(
self.parser.binaryToTerm("c\x31\x32\x2e\x33\x34\x00\x00\x00\x00"
"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
"\x00\x00\x00\x00\x00\x00\x00"),
(Float(12.34), ""))
def test_parseBigFloat(self):
"""
Try to parse a float without null character.
"""
self.assertEquals(
self.parser.binaryToTerm("c\x31\x32\x2e\x33\x34\x32\x32\x32\x32"
"\x32\x32\x32\x32\x32\x32\x32\x32\x32\x32\x32\x32\x32\x32\x32"
"\x32\x32\x32\x32\x32\x32\x32"),
(Float(12.34222222222222222222222222222), ""))
self.assertEquals(
self.parser.binaryToTerm("c-5.6779999999999999360"
"5e+00\x00\x00\x00\x00"),
(Float(-5.678), ""))
def test_parseInteger(self):
"""
Test parsing a standard integer on 32 bits.
"""
self.assertEquals(
self.parser.binaryToTerm("b\x00\x00\x00\x0f"), (Integer(15), ""))
self.assertEquals(
self.parser.binaryToTerm("b\xff\xff\xff\xff"), (Integer(-1), ""))
self.assertEquals(
self.parser.binaryToTerm("b\xff\xff\xff\xfe"), (Integer(-2), ""))
def test_parseSmallInteger(self):
"""
Try to parse a small integer on 1 byte.
"""
self.assertEquals(self.parser.binaryToTerm("a\x0e"), (Integer(14), ""))
def test_parseNewReference(self):
"""
Parse a new reference binary representation: the reference ID is an
array of integers.
"""
r = Reference(Atom('bar'), [3, 4], 1)
self.assertEquals(
self.parser.binaryToTerm("r\x00\x02d\x00\x03bar"
"\x01\x00\x00\x00\x03\x00\x00\x00\x04"),
(r, ""))
def test_parseReference(self):
"""
Parse a reference binary representation: the reference ID is only an
integer.
"""
r = Reference(Atom('foo'), 5, 1)
self.assertEquals(
self.parser.binaryToTerm("ed\x00\x03foo"
"\x00\x00\x00\x05\x01"),
(r, ""))
def test_parsePort(self):
"""
Parse a Port binary representation.
"""
r = Port(Atom('egg'), 12, 0)
self.assertEquals(
self.parser.binaryToTerm("fd\x00\x03egg\x00\x00\x00\x0c\x04"),
(r, ""))
def test_parseBinary(self):
"""
Parse a binary object representation.
"""
self.assertEquals(
self.parser.binaryToTerm("m\x00\x00\x00\x03egg"),
(Binary("egg"), ""))
def test_parseFun(self):
"""
Try to parse a Fun object.
"""
f = Fun(Pid(Atom('foo'), 1234, 56, 2), Atom("spam"), 12, 34,
[Atom("bar"), Atom("bim")])
self.assertEquals(
self.parser.binaryToTerm("u\x00\x00\x00\x02gd\x00\x03foo"
"\x00\x00\x04\xd2\x00\x00\x008\x02d\x00\x04spama\x0ca\x22"
"d\x00\x03bard\x00\x03bim"),
(f, ""))
def test_parseNewFun(self):
"""
Try to parse a NewFun object: it has specific ID fields.
"""
f = NewFun(Pid(Atom('foo'), 1234, 56, 2), Atom("spam"), 1,
'1234567890123456', 1, 2, 12, 34,
[Atom("bar"), Atom("bim")])
self.assertEquals(
self.parser.binaryToTerm("p\x00\x00\x00\x02\x01"
"1234567890123456\x00\x00\x00\x01\x00\x00\x00\x02d\x00\x04spam"
"a\x0ca\x22gd\x00\x03foo\x00\x00\x04\xd2\x00\x00\x008\x02"
"d\x00\x03bard\x00\x03bim"),
(f, ""))
def test_parseNewCache(self):
"""
Try to parse a NewCache object: it should correctly extract it and
put it in the cache.
"""
# This doesn't put it in the cache
a = Atom("spam")
self.assertEquals(
self.parser.binaryToTerm("N\x03\x00\x04spam"), (a, ""))
# Retrieve the value from cache
b = Atom(None, 3)
self.assertEquals(a, b)
def test_parseCachedAtom(self):
"""
Try to parse a Cached object: if not in the cache, this should raise
an exception, and if found it should retrieve it.
"""
self.assertRaises(KeyError, self.parser.binaryToTerm, "C\x08")
a = Atom("foo", 8)
self.assertEquals(self.parser.binaryToTerm("C\x08"), (a, ""))
def test_unhandledCode(self):
"""
Check that trying to parse invalid data raises an exception.
"""
self.assertRaises(UnhandledCode, self.parser.binaryToTerm, "Dfoo")
def test_parseVersion(self):
"""
Version shouldn't be managed by the parser
"""
self.assertRaises(RuntimeError, self.parser.binaryToTerm, "\x83foo")
def test_parseExport(self):
"""
Test parsing an export term.
"""
e = Export(Atom("bar"), Atom("foo"), Integer(2))
self.assertEquals(
self.parser.binaryToTerm("qd\x00\x03bard\x00\x03fooa\x02"),
(e, ""))
def test_parseBitBinary(self):
"""
Test parsing a bit binary object.
"""
b = BitBinary("\x04\x04\x04", 19)
self.assertEquals(
self.parser.binaryToTerm("M\x00\x00\x00\x03\x13\x04\x04\x04"),
(b, ""))
def test_parseDict(self):
"""
Test parsing a dict object.
"""
data = (
"\x83h\td\x00\x04dicta\x02a\x10a\x10a\x08aPa0h\x10jjjjjjjjjjjjjjjj"
"h\x01h\x10l\x00\x00\x00\x01l\x00\x00\x00\x02d\x00\x04spama\x01j"
"jl\x00\x00\x00\x01l\x00\x00\x00\x02d\x00\x03fook\x00\x03bar"
"jjjjjjjjjjjjjjjj")
self.assertEquals(
list(self.parser.binaryToTerms(data)),
[{Atom("foo"): [98, 97, 114], Atom("spam"): 1}])
def test_parseSet(self):
"""
Test parsing a set object.
"""
data = (
"\x83h\td\x00\x03seta\x02a\x10a\x10a\x08aPa0h\x10jjjjjjjjjjjjjjjj"
"h\x01h\x10l\x00\x00\x00\x01d\x00\x03barjl\x00\x00\x00\x01d\x00"
"\x03foojjjjjjjjjjjjjjj")
self.assertEquals(
list(self.parser.binaryToTerms(data)),
[set([Atom("bar"), Atom("foo")])])
def test_binaryToTerms(self):
"""
Try to parse a full binary stream.
"""
self.assertEquals(
list(self.parser.binaryToTerms("\x83d\x00\x03foo")),
[Atom("foo")])
def test_remainingData(self):
"""
If too much data is given, it should raise a C{RemainingDataError}
exception.
"""
self.assertRaises(RemainingDataError, list,
self.parser.binaryToTerms("\x83d\x00\x03foo\x01"))
def test_compressedData(self):
"""
The parser is able to handle compressed data.
"""
self.assertEquals(
self.parser.binaryToTerm("P\x00\x00\x00\x12x\x9c\xcbf\xe0\xaf@"
"\x05\x00@\xc8\x07\x83"),
([120] * 15, ""))
def test_parseNewFloat(self):
"""
Try to parse a new float.
"""
self.assertEquals(self.parser.binaryToTerm('F?\xf3\xae\x14z\xe1G\xae'),
(1.23, ""))