| import test.test_support |
| compiler = test.test_support.import_module('compiler', deprecated=True) |
| from compiler.ast import flatten |
| import os, sys, time, unittest |
| from random import random |
| from StringIO import StringIO |
| |
| # 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 |
| # warning: if 'os' or 'test_support' are moved in some other dir, |
| # they should be changed here. |
| libdir = os.path.dirname(os.__file__) |
| testdir = os.path.dirname(test.test_support.__file__) |
| |
| for dir in [testdir]: |
| for basename in "test_os.py",: |
| # 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.append("in file %s]" % basename) |
| #args[0] += "[in file %s]" % basename |
| e.args = tuple(args) |
| raise |
| |
| def testNewClassSyntax(self): |
| compiler.compile("class foo():pass\n\n","<string>","exec") |
| |
| def testYieldExpr(self): |
| compiler.compile("def g(): yield\n\n", "<string>", "exec") |
| |
| def testKeywordAfterStarargs(self): |
| def f(*args, **kwargs): |
| self.assertEqual((args, kwargs), ((2,3), {'x': 1, 'y': 4})) |
| c = compiler.compile('f(x=1, *(2, 3), y=4)', '<string>', 'exec') |
| exec c in {'f': f} |
| |
| self.assertRaises(SyntaxError, compiler.parse, "foo(a=1, b)") |
| self.assertRaises(SyntaxError, compiler.parse, "foo(1, *args, 3)") |
| |
| 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", |
| "<string>", "exec") |
| dct = {} |
| exec c in dct |
| self.assertEqual(dct.get('e'), 1) |
| self.assertEqual(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"', '<string>', 'exec') |
| self.assertIn('__doc__', c.co_names) |
| c = compiler.compile('def f():\n "doc"', '<string>', 'exec') |
| g = {} |
| exec c in g |
| self.assertEqual(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.assertIsInstance(node.lineno, int, |
| "lineno=%s on %s" % (node.lineno, node.__class__)) |
| self.assertTrue(node.lineno > 0, |
| "lineno=%s on %s" % (node.lineno, node.__class__)) |
| for child in node.getChildNodes(): |
| self.check_lineno(child) |
| |
| def testFlatten(self): |
| self.assertEqual(flatten([1, [2]]), [1, 2]) |
| self.assertEqual(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()', |
| '<string>', |
| 'exec') |
| dct = {} |
| exec c in dct |
| self.assertEqual(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)', |
| '<string>', |
| 'eval') |
| self.assertEqual(eval(c), [(0, 3), (1, 3), (2, 3)]) |
| |
| def testSetLiteral(self): |
| c = compiler.compile('{1, 2, 3}', '<string>', 'eval') |
| self.assertEqual(eval(c), {1,2,3}) |
| c = compiler.compile('{1, 2, 3,}', '<string>', 'eval') |
| self.assertEqual(eval(c), {1,2,3}) |
| |
| def testDictLiteral(self): |
| c = compiler.compile('{1:2, 2:3, 3:4}', '<string>', 'eval') |
| self.assertEqual(eval(c), {1:2, 2:3, 3:4}) |
| c = compiler.compile('{1:2, 2:3, 3:4,}', '<string>', 'eval') |
| self.assertEqual(eval(c), {1:2, 2:3, 3:4}) |
| |
| def testSetComp(self): |
| c = compiler.compile('{x for x in range(1, 4)}', '<string>', 'eval') |
| self.assertEqual(eval(c), {1, 2, 3}) |
| c = compiler.compile('{x * y for x in range(3) if x != 0' |
| ' for y in range(4) if y != 0}', |
| '<string>', |
| 'eval') |
| self.assertEqual(eval(c), {1, 2, 3, 4, 6}) |
| |
| def testDictComp(self): |
| c = compiler.compile('{x:x+1 for x in range(1, 4)}', '<string>', 'eval') |
| self.assertEqual(eval(c), {1:2, 2:3, 3:4}) |
| c = compiler.compile('{(x, y) : y for x in range(2) if x != 0' |
| ' for y in range(3) if y != 0}', |
| '<string>', |
| 'eval') |
| self.assertEqual(eval(c), {(1, 2): 2, (1, 1): 1}) |
| |
| 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()', |
| '<string>', |
| 'exec' ) |
| dct = {'TrivialContext': TrivialContext} |
| exec c in dct |
| self.assertEqual(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()', |
| '<string>', |
| 'exec' ) |
| dct = {'TrivialContext': TrivialContext} |
| exec c in dct |
| self.assertEqual(dct.get('result'), 1) |
| |
| def testWithMult(self): |
| events = [] |
| class Ctx: |
| def __init__(self, n): |
| self.n = n |
| def __enter__(self): |
| events.append(self.n) |
| def __exit__(self, *args): |
| pass |
| c = compiler.compile('from __future__ import with_statement\n' |
| 'def f():\n' |
| ' with Ctx(1) as tc, Ctx(2) as tc2:\n' |
| ' return 1\n' |
| 'result = f()', |
| '<string>', |
| 'exec' ) |
| dct = {'Ctx': Ctx} |
| exec c in dct |
| self.assertEqual(dct.get('result'), 1) |
| self.assertEqual(events, [1, 2]) |
| |
| def testGlobal(self): |
| code = compiler.compile('global x\nx=1', '<string>', 'exec') |
| d1 = {'__builtins__': {}} |
| d2 = {} |
| exec code in d1, d2 |
| # x should be in the globals dict |
| self.assertEqual(d1.get('x'), 1) |
| |
| def testPrintFunction(self): |
| c = compiler.compile('from __future__ import print_function\n' |
| 'print("a", "b", sep="**", end="++", ' |
| 'file=output)', |
| '<string>', |
| 'exec' ) |
| dct = {'output': StringIO()} |
| exec c in dct |
| self.assertEqual(dct['output'].getvalue(), 'a**b++') |
| |
| def _testErrEnc(self, src, text, offset): |
| try: |
| compile(src, "", "exec") |
| except SyntaxError, e: |
| self.assertEqual(e.offset, offset) |
| self.assertEqual(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 = {} |
| d = {x: y for x, y in zip(range(5), range(5,10))} |
| s = {x for x in range(10)} |
| s = {1} |
| 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("cpu") |
| test.test_support.run_unittest(CompilerTest) |
| |
| if __name__ == "__main__": |
| test_main() |
