| 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 [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.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() |