lib-python.2.5.test.test_compiler.py Maven / Gradle / Ivy
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Jython is an implementation of the high-level, dynamic, object-oriented
language Python written in 100% Pure Java, and seamlessly integrated with
the Java platform. It thus allows you to run Python on any Java platform.
import compiler
from compiler.ast import flatten
import os, sys, time, unittest
import test.test_support
from random import random
# How much time in seconds can pass before we print a 'Still working' message.
_PRINT_WORKING_MSG_INTERVAL = 5 * 60
class TrivialContext(object):
def __enter__(self):
return self
def __exit__(self, *exc_info):
pass
class CompilerTest(unittest.TestCase):
def testCompileLibrary(self):
# A simple but large test. Compile all the code in the
# standard library and its test suite. This doesn't verify
# that any of the code is correct, merely the compiler is able
# to generate some kind of code for it.
next_time = time.time() + _PRINT_WORKING_MSG_INTERVAL
libdir = os.path.dirname(unittest.__file__)
testdir = os.path.dirname(test.test_support.__file__)
for dir in [libdir, testdir]:
for basename in os.listdir(dir):
# Print still working message since this test can be really slow
if next_time <= time.time():
next_time = time.time() + _PRINT_WORKING_MSG_INTERVAL
print >>sys.__stdout__, \
' testCompileLibrary still working, be patient...'
sys.__stdout__.flush()
if not basename.endswith(".py"):
continue
if not TEST_ALL and random() < 0.98:
continue
path = os.path.join(dir, basename)
if test.test_support.verbose:
print "compiling", path
f = open(path, "U")
buf = f.read()
f.close()
if "badsyntax" in basename or "bad_coding" in basename:
self.assertRaises(SyntaxError, compiler.compile,
buf, basename, "exec")
else:
try:
compiler.compile(buf, basename, "exec")
except Exception, e:
args = list(e.args)
args[0] += "[in file %s]" % basename
e.args = tuple(args)
raise
def testNewClassSyntax(self):
compiler.compile("class foo():pass\n\n","","exec")
def testYieldExpr(self):
compiler.compile("def g(): yield\n\n", "", "exec")
def testTryExceptFinally(self):
# Test that except and finally clauses in one try stmt are recognized
c = compiler.compile("try:\n 1/0\nexcept:\n e = 1\nfinally:\n f = 1",
"", "exec")
dct = {}
exec c in dct
self.assertEquals(dct.get('e'), 1)
self.assertEquals(dct.get('f'), 1)
def testDefaultArgs(self):
self.assertRaises(SyntaxError, compiler.parse, "def foo(a=1, b): pass")
def testDocstrings(self):
c = compiler.compile('"doc"', '', 'exec')
self.assert_('__doc__' in c.co_names)
c = compiler.compile('def f():\n "doc"', '', 'exec')
g = {}
exec c in g
self.assertEquals(g['f'].__doc__, "doc")
def testLineNo(self):
# Test that all nodes except Module have a correct lineno attribute.
filename = __file__
if filename.endswith((".pyc", ".pyo")):
filename = filename[:-1]
tree = compiler.parseFile(filename)
self.check_lineno(tree)
def check_lineno(self, node):
try:
self._check_lineno(node)
except AssertionError:
print node.__class__, node.lineno
raise
def _check_lineno(self, node):
if not node.__class__ in NOLINENO:
self.assert_(isinstance(node.lineno, int),
"lineno=%s on %s" % (node.lineno, node.__class__))
self.assert_(node.lineno > 0,
"lineno=%s on %s" % (node.lineno, node.__class__))
for child in node.getChildNodes():
self.check_lineno(child)
def testFlatten(self):
self.assertEquals(flatten([1, [2]]), [1, 2])
self.assertEquals(flatten((1, (2,))), [1, 2])
def testNestedScope(self):
c = compiler.compile('def g():\n'
' a = 1\n'
' def f(): return a + 2\n'
' return f()\n'
'result = g()',
'',
'exec')
dct = {}
exec c in dct
self.assertEquals(dct.get('result'), 3)
def testGenExp(self):
c = compiler.compile('list((i,j) for i in range(3) if i < 3'
' for j in range(4) if j > 2)',
'',
'eval')
self.assertEquals(eval(c), [(0, 3), (1, 3), (2, 3)])
def testWith(self):
# SF bug 1638243
c = compiler.compile('from __future__ import with_statement\n'
'def f():\n'
' with TrivialContext():\n'
' return 1\n'
'result = f()',
'',
'exec' )
dct = {'TrivialContext': TrivialContext}
exec c in dct
self.assertEquals(dct.get('result'), 1)
def testWithAss(self):
c = compiler.compile('from __future__ import with_statement\n'
'def f():\n'
' with TrivialContext() as tc:\n'
' return 1\n'
'result = f()',
'',
'exec' )
dct = {'TrivialContext': TrivialContext}
exec c in dct
self.assertEquals(dct.get('result'), 1)
def _testErrEnc(self, src, text, offset):
try:
compile(src, "", "exec")
except SyntaxError, e:
self.assertEquals(e.offset, offset)
self.assertEquals(e.text, text)
def testSourceCodeEncodingsError(self):
# Test SyntaxError with encoding definition
sjis = "print '\x83\x70\x83\x43\x83\x5c\x83\x93', '\n"
ascii = "print '12345678', '\n"
encdef = "#! -*- coding: ShiftJIS -*-\n"
# ascii source without encdef
self._testErrEnc(ascii, ascii, 19)
# ascii source with encdef
self._testErrEnc(encdef+ascii, ascii, 19)
# non-ascii source with encdef
self._testErrEnc(encdef+sjis, sjis, 19)
# ShiftJIS source without encdef
self._testErrEnc(sjis, sjis, 19)
NOLINENO = (compiler.ast.Module, compiler.ast.Stmt, compiler.ast.Discard)
###############################################################################
# code below is just used to trigger some possible errors, for the benefit of
# testLineNo
###############################################################################
class Toto:
"""docstring"""
pass
a, b = 2, 3
[c, d] = 5, 6
l = [(x, y) for x, y in zip(range(5), range(5,10))]
l[0]
l[3:4]
d = {'a': 2}
d = {}
t = ()
t = (1, 2)
l = []
l = [1, 2]
if l:
pass
else:
a, b = b, a
try:
print yo
except:
yo = 3
else:
yo += 3
try:
a += b
finally:
b = 0
from math import *
###############################################################################
def test_main():
global TEST_ALL
TEST_ALL = test.test_support.is_resource_enabled("compiler")
test.test_support.run_unittest(CompilerTest)
if __name__ == "__main__":
test_main()