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 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.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","","exec") def testYieldExpr(self): compiler.compile("def g(): yield\n\n", "", "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)', '', '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", "", "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 testPrintFunction(self): c = compiler.compile('from __future__ import print_function\n' 'print("a", "b", sep="**", end="++", ' 'file=output)', '', 'exec' ) dct = {'output': StringIO()} exec c in dct self.assertEquals(dct['output'].getvalue(), 'a**b++') 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()