| import sys, itertools, unittest
|
| from test import test_support
|
| import ast
|
|
|
| def to_tuple(t):
|
| if t is None or isinstance(t, (basestring, int, long, complex)):
|
| return t
|
| elif isinstance(t, list):
|
| return [to_tuple(e) for e in t]
|
| result = [t.__class__.__name__]
|
| if hasattr(t, 'lineno') and hasattr(t, 'col_offset'):
|
| result.append((t.lineno, t.col_offset))
|
| if t._fields is None:
|
| return tuple(result)
|
| for f in t._fields:
|
| result.append(to_tuple(getattr(t, f)))
|
| return tuple(result)
|
|
|
|
|
| # These tests are compiled through "exec"
|
| # There should be atleast one test per statement
|
| exec_tests = [
|
| # FunctionDef
|
| "def f(): pass",
|
| # ClassDef
|
| "class C:pass",
|
| # Return
|
| "def f():return 1",
|
| # Delete
|
| "del v",
|
| # Assign
|
| "v = 1",
|
| # AugAssign
|
| "v += 1",
|
| # Print
|
| "print >>f, 1, ",
|
| # For
|
| "for v in v:pass",
|
| # While
|
| "while v:pass",
|
| # If
|
| "if v:pass",
|
| # Raise
|
| "raise Exception, 'string'",
|
| # TryExcept
|
| "try:\n pass\nexcept Exception:\n pass",
|
| # TryFinally
|
| "try:\n pass\nfinally:\n pass",
|
| # Assert
|
| "assert v",
|
| # Import
|
| "import sys",
|
| # ImportFrom
|
| "from sys import v",
|
| # Exec
|
| "exec 'v'",
|
| # Global
|
| "global v",
|
| # Expr
|
| "1",
|
| # Pass,
|
| "pass",
|
| # Break
|
| "break",
|
| # Continue
|
| "continue",
|
| # for statements with naked tuples (see http://bugs.python.org/issue6704)
|
| "for a,b in c: pass",
|
| "[(a,b) for a,b in c]",
|
| "((a,b) for a,b in c)",
|
| ]
|
|
|
| # These are compiled through "single"
|
| # because of overlap with "eval", it just tests what
|
| # can't be tested with "eval"
|
| single_tests = [
|
| "1+2"
|
| ]
|
|
|
| # These are compiled through "eval"
|
| # It should test all expressions
|
| eval_tests = [
|
| # BoolOp
|
| "a and b",
|
| # BinOp
|
| "a + b",
|
| # UnaryOp
|
| "not v",
|
| # Lambda
|
| "lambda:None",
|
| # Dict
|
| "{ 1:2 }",
|
| # ListComp
|
| "[a for b in c if d]",
|
| # GeneratorExp
|
| "(a for b in c if d)",
|
| # Yield - yield expressions can't work outside a function
|
| #
|
| # Compare
|
| "1 < 2 < 3",
|
| # Call
|
| "f(1,2,c=3,*d,**e)",
|
| # Repr
|
| "`v`",
|
| # Num
|
| "10L",
|
| # Str
|
| "'string'",
|
| # Attribute
|
| "a.b",
|
| # Subscript
|
| "a[b:c]",
|
| # Name
|
| "v",
|
| # List
|
| "[1,2,3]",
|
| # Tuple
|
| "1,2,3",
|
| # Combination
|
| "a.b.c.d(a.b[1:2])",
|
|
|
| ]
|
|
|
| # TODO: expr_context, slice, boolop, operator, unaryop, cmpop, comprehension
|
| # excepthandler, arguments, keywords, alias
|
|
|
| class AST_Tests(unittest.TestCase):
|
|
|
| def _assertTrueorder(self, ast_node, parent_pos):
|
| if not isinstance(ast_node, ast.AST) or ast_node._fields is None:
|
| return
|
| if isinstance(ast_node, (ast.expr, ast.stmt, ast.excepthandler)):
|
| node_pos = (ast_node.lineno, ast_node.col_offset)
|
| self.assertTrue(node_pos >= parent_pos)
|
| parent_pos = (ast_node.lineno, ast_node.col_offset)
|
| for name in ast_node._fields:
|
| value = getattr(ast_node, name)
|
| if isinstance(value, list):
|
| for child in value:
|
| self._assertTrueorder(child, parent_pos)
|
| elif value is not None:
|
| self._assertTrueorder(value, parent_pos)
|
|
|
| def test_snippets(self):
|
| for input, output, kind in ((exec_tests, exec_results, "exec"),
|
| (single_tests, single_results, "single"),
|
| (eval_tests, eval_results, "eval")):
|
| for i, o in itertools.izip(input, output):
|
| ast_tree = compile(i, "?", kind, ast.PyCF_ONLY_AST)
|
| self.assertEqual(to_tuple(ast_tree), o)
|
| self._assertTrueorder(ast_tree, (0, 0))
|
|
|
| def test_slice(self):
|
| slc = ast.parse("x[::]").body[0].value.slice
|
| self.assertIsNone(slc.upper)
|
| self.assertIsNone(slc.lower)
|
| self.assertIsInstance(slc.step, ast.Name)
|
| self.assertEqual(slc.step.id, "None")
|
|
|
| def test_from_import(self):
|
| im = ast.parse("from . import y").body[0]
|
| self.assertIsNone(im.module)
|
|
|
| def test_base_classes(self):
|
| self.assertTrue(issubclass(ast.For, ast.stmt))
|
| self.assertTrue(issubclass(ast.Name, ast.expr))
|
| self.assertTrue(issubclass(ast.stmt, ast.AST))
|
| self.assertTrue(issubclass(ast.expr, ast.AST))
|
| self.assertTrue(issubclass(ast.comprehension, ast.AST))
|
| self.assertTrue(issubclass(ast.Gt, ast.AST))
|
|
|
| def test_nodeclasses(self):
|
| x = ast.BinOp(1, 2, 3, lineno=0)
|
| self.assertEqual(x.left, 1)
|
| self.assertEqual(x.op, 2)
|
| self.assertEqual(x.right, 3)
|
| self.assertEqual(x.lineno, 0)
|
|
|
| # node raises exception when not given enough arguments
|
| self.assertRaises(TypeError, ast.BinOp, 1, 2)
|
|
|
| # can set attributes through kwargs too
|
| x = ast.BinOp(left=1, op=2, right=3, lineno=0)
|
| self.assertEqual(x.left, 1)
|
| self.assertEqual(x.op, 2)
|
| self.assertEqual(x.right, 3)
|
| self.assertEqual(x.lineno, 0)
|
|
|
| # this used to fail because Sub._fields was None
|
| x = ast.Sub()
|
|
|
| def test_pickling(self):
|
| import pickle
|
| mods = [pickle]
|
| try:
|
| import cPickle
|
| mods.append(cPickle)
|
| except ImportError:
|
| pass
|
| protocols = [0, 1, 2]
|
| for mod in mods:
|
| for protocol in protocols:
|
| for ast in (compile(i, "?", "exec", 0x400) for i in exec_tests):
|
| ast2 = mod.loads(mod.dumps(ast, protocol))
|
| self.assertEqual(to_tuple(ast2), to_tuple(ast))
|
|
|
|
|
| class ASTHelpers_Test(unittest.TestCase):
|
|
|
| def test_parse(self):
|
| a = ast.parse('foo(1 + 1)')
|
| b = compile('foo(1 + 1)', '<unknown>', 'exec', ast.PyCF_ONLY_AST)
|
| self.assertEqual(ast.dump(a), ast.dump(b))
|
|
|
| def test_dump(self):
|
| node = ast.parse('spam(eggs, "and cheese")')
|
| self.assertEqual(ast.dump(node),
|
| "Module(body=[Expr(value=Call(func=Name(id='spam', ctx=Load()), "
|
| "args=[Name(id='eggs', ctx=Load()), Str(s='and cheese')], "
|
| "keywords=[], starargs=None, kwargs=None))])"
|
| )
|
| self.assertEqual(ast.dump(node, annotate_fields=False),
|
| "Module([Expr(Call(Name('spam', Load()), [Name('eggs', Load()), "
|
| "Str('and cheese')], [], None, None))])"
|
| )
|
| self.assertEqual(ast.dump(node, include_attributes=True),
|
| "Module(body=[Expr(value=Call(func=Name(id='spam', ctx=Load(), "
|
| "lineno=1, col_offset=0), args=[Name(id='eggs', ctx=Load(), "
|
| "lineno=1, col_offset=5), Str(s='and cheese', lineno=1, "
|
| "col_offset=11)], keywords=[], starargs=None, kwargs=None, "
|
| "lineno=1, col_offset=0), lineno=1, col_offset=0)])"
|
| )
|
|
|
| def test_copy_location(self):
|
| src = ast.parse('1 + 1', mode='eval')
|
| src.body.right = ast.copy_location(ast.Num(2), src.body.right)
|
| self.assertEqual(ast.dump(src, include_attributes=True),
|
| 'Expression(body=BinOp(left=Num(n=1, lineno=1, col_offset=0), '
|
| 'op=Add(), right=Num(n=2, lineno=1, col_offset=4), lineno=1, '
|
| 'col_offset=0))'
|
| )
|
|
|
| def test_fix_missing_locations(self):
|
| src = ast.parse('write("spam")')
|
| src.body.append(ast.Expr(ast.Call(ast.Name('spam', ast.Load()),
|
| [ast.Str('eggs')], [], None, None)))
|
| self.assertEqual(src, ast.fix_missing_locations(src))
|
| self.assertEqual(ast.dump(src, include_attributes=True),
|
| "Module(body=[Expr(value=Call(func=Name(id='write', ctx=Load(), "
|
| "lineno=1, col_offset=0), args=[Str(s='spam', lineno=1, "
|
| "col_offset=6)], keywords=[], starargs=None, kwargs=None, "
|
| "lineno=1, col_offset=0), lineno=1, col_offset=0), "
|
| "Expr(value=Call(func=Name(id='spam', ctx=Load(), lineno=1, "
|
| "col_offset=0), args=[Str(s='eggs', lineno=1, col_offset=0)], "
|
| "keywords=[], starargs=None, kwargs=None, lineno=1, "
|
| "col_offset=0), lineno=1, col_offset=0)])"
|
| )
|
|
|
| def test_increment_lineno(self):
|
| src = ast.parse('1 + 1', mode='eval')
|
| self.assertEqual(ast.increment_lineno(src, n=3), src)
|
| self.assertEqual(ast.dump(src, include_attributes=True),
|
| 'Expression(body=BinOp(left=Num(n=1, lineno=4, col_offset=0), '
|
| 'op=Add(), right=Num(n=1, lineno=4, col_offset=4), lineno=4, '
|
| 'col_offset=0))'
|
| )
|
| # issue10869: do not increment lineno of root twice
|
| src = ast.parse('1 + 1', mode='eval')
|
| self.assertEqual(ast.increment_lineno(src.body, n=3), src.body)
|
| self.assertEqual(ast.dump(src, include_attributes=True),
|
| 'Expression(body=BinOp(left=Num(n=1, lineno=4, col_offset=0), '
|
| 'op=Add(), right=Num(n=1, lineno=4, col_offset=4), lineno=4, '
|
| 'col_offset=0))'
|
| )
|
|
|
| def test_iter_fields(self):
|
| node = ast.parse('foo()', mode='eval')
|
| d = dict(ast.iter_fields(node.body))
|
| self.assertEqual(d.pop('func').id, 'foo')
|
| self.assertEqual(d, {'keywords': [], 'kwargs': None,
|
| 'args': [], 'starargs': None})
|
|
|
| def test_iter_child_nodes(self):
|
| node = ast.parse("spam(23, 42, eggs='leek')", mode='eval')
|
| self.assertEqual(len(list(ast.iter_child_nodes(node.body))), 4)
|
| iterator = ast.iter_child_nodes(node.body)
|
| self.assertEqual(next(iterator).id, 'spam')
|
| self.assertEqual(next(iterator).n, 23)
|
| self.assertEqual(next(iterator).n, 42)
|
| self.assertEqual(ast.dump(next(iterator)),
|
| "keyword(arg='eggs', value=Str(s='leek'))"
|
| )
|
|
|
| def test_get_docstring(self):
|
| node = ast.parse('def foo():\n """line one\n line two"""')
|
| self.assertEqual(ast.get_docstring(node.body[0]),
|
| 'line one\nline two')
|
|
|
| def test_literal_eval(self):
|
| self.assertEqual(ast.literal_eval('[1, 2, 3]'), [1, 2, 3])
|
| self.assertEqual(ast.literal_eval('{"foo": 42}'), {"foo": 42})
|
| self.assertEqual(ast.literal_eval('(True, False, None)'), (True, False, None))
|
| self.assertRaises(ValueError, ast.literal_eval, 'foo()')
|
|
|
| def test_literal_eval_issue4907(self):
|
| self.assertEqual(ast.literal_eval('2j'), 2j)
|
| self.assertEqual(ast.literal_eval('10 + 2j'), 10 + 2j)
|
| self.assertEqual(ast.literal_eval('1.5 - 2j'), 1.5 - 2j)
|
| self.assertRaises(ValueError, ast.literal_eval, '2 + (3 + 4j)')
|
|
|
|
|
| def test_main():
|
| with test_support.check_py3k_warnings(("backquote not supported",
|
| SyntaxWarning)):
|
| test_support.run_unittest(AST_Tests, ASTHelpers_Test)
|
|
|
| def main():
|
| if __name__ != '__main__':
|
| return
|
| if sys.argv[1:] == ['-g']:
|
| for statements, kind in ((exec_tests, "exec"), (single_tests, "single"),
|
| (eval_tests, "eval")):
|
| print kind+"_results = ["
|
| for s in statements:
|
| print repr(to_tuple(compile(s, "?", kind, 0x400)))+","
|
| print "]"
|
| print "main()"
|
| raise SystemExit
|
| test_main()
|
|
|
| #### EVERYTHING BELOW IS GENERATED #####
|
| exec_results = [
|
| ('Module', [('FunctionDef', (1, 0), 'f', ('arguments', [], None, None, []), [('Pass', (1, 9))], [])]),
|
| ('Module', [('ClassDef', (1, 0), 'C', [], [('Pass', (1, 8))], [])]),
|
| ('Module', [('FunctionDef', (1, 0), 'f', ('arguments', [], None, None, []), [('Return', (1, 8), ('Num', (1, 15), 1))], [])]),
|
| ('Module', [('Delete', (1, 0), [('Name', (1, 4), 'v', ('Del',))])]),
|
| ('Module', [('Assign', (1, 0), [('Name', (1, 0), 'v', ('Store',))], ('Num', (1, 4), 1))]),
|
| ('Module', [('AugAssign', (1, 0), ('Name', (1, 0), 'v', ('Store',)), ('Add',), ('Num', (1, 5), 1))]),
|
| ('Module', [('Print', (1, 0), ('Name', (1, 8), 'f', ('Load',)), [('Num', (1, 11), 1)], False)]),
|
| ('Module', [('For', (1, 0), ('Name', (1, 4), 'v', ('Store',)), ('Name', (1, 9), 'v', ('Load',)), [('Pass', (1, 11))], [])]),
|
| ('Module', [('While', (1, 0), ('Name', (1, 6), 'v', ('Load',)), [('Pass', (1, 8))], [])]),
|
| ('Module', [('If', (1, 0), ('Name', (1, 3), 'v', ('Load',)), [('Pass', (1, 5))], [])]),
|
| ('Module', [('Raise', (1, 0), ('Name', (1, 6), 'Exception', ('Load',)), ('Str', (1, 17), 'string'), None)]),
|
| ('Module', [('TryExcept', (1, 0), [('Pass', (2, 2))], [('ExceptHandler', (3, 0), ('Name', (3, 7), 'Exception', ('Load',)), None, [('Pass', (4, 2))])], [])]),
|
| ('Module', [('TryFinally', (1, 0), [('Pass', (2, 2))], [('Pass', (4, 2))])]),
|
| ('Module', [('Assert', (1, 0), ('Name', (1, 7), 'v', ('Load',)), None)]),
|
| ('Module', [('Import', (1, 0), [('alias', 'sys', None)])]),
|
| ('Module', [('ImportFrom', (1, 0), 'sys', [('alias', 'v', None)], 0)]),
|
| ('Module', [('Exec', (1, 0), ('Str', (1, 5), 'v'), None, None)]),
|
| ('Module', [('Global', (1, 0), ['v'])]),
|
| ('Module', [('Expr', (1, 0), ('Num', (1, 0), 1))]),
|
| ('Module', [('Pass', (1, 0))]),
|
| ('Module', [('Break', (1, 0))]),
|
| ('Module', [('Continue', (1, 0))]),
|
| ('Module', [('For', (1, 0), ('Tuple', (1, 4), [('Name', (1, 4), 'a', ('Store',)), ('Name', (1, 6), 'b', ('Store',))], ('Store',)), ('Name', (1, 11), 'c', ('Load',)), [('Pass', (1, 14))], [])]),
|
| ('Module', [('Expr', (1, 0), ('ListComp', (1, 1), ('Tuple', (1, 2), [('Name', (1, 2), 'a', ('Load',)), ('Name', (1, 4), 'b', ('Load',))], ('Load',)), [('comprehension', ('Tuple', (1, 11), [('Name', (1, 11), 'a', ('Store',)), ('Name', (1, 13), 'b', ('Store',))], ('Store',)), ('Name', (1, 18), 'c', ('Load',)), [])]))]),
|
| ('Module', [('Expr', (1, 0), ('GeneratorExp', (1, 1), ('Tuple', (1, 2), [('Name', (1, 2), 'a', ('Load',)), ('Name', (1, 4), 'b', ('Load',))], ('Load',)), [('comprehension', ('Tuple', (1, 11), [('Name', (1, 11), 'a', ('Store',)), ('Name', (1, 13), 'b', ('Store',))], ('Store',)), ('Name', (1, 18), 'c', ('Load',)), [])]))]),
|
| ]
|
| single_results = [
|
| ('Interactive', [('Expr', (1, 0), ('BinOp', (1, 0), ('Num', (1, 0), 1), ('Add',), ('Num', (1, 2), 2)))]),
|
| ]
|
| eval_results = [
|
| ('Expression', ('BoolOp', (1, 0), ('And',), [('Name', (1, 0), 'a', ('Load',)), ('Name', (1, 6), 'b', ('Load',))])),
|
| ('Expression', ('BinOp', (1, 0), ('Name', (1, 0), 'a', ('Load',)), ('Add',), ('Name', (1, 4), 'b', ('Load',)))),
|
| ('Expression', ('UnaryOp', (1, 0), ('Not',), ('Name', (1, 4), 'v', ('Load',)))),
|
| ('Expression', ('Lambda', (1, 0), ('arguments', [], None, None, []), ('Name', (1, 7), 'None', ('Load',)))),
|
| ('Expression', ('Dict', (1, 0), [('Num', (1, 2), 1)], [('Num', (1, 4), 2)])),
|
| ('Expression', ('ListComp', (1, 1), ('Name', (1, 1), 'a', ('Load',)), [('comprehension', ('Name', (1, 7), 'b', ('Store',)), ('Name', (1, 12), 'c', ('Load',)), [('Name', (1, 17), 'd', ('Load',))])])),
|
| ('Expression', ('GeneratorExp', (1, 1), ('Name', (1, 1), 'a', ('Load',)), [('comprehension', ('Name', (1, 7), 'b', ('Store',)), ('Name', (1, 12), 'c', ('Load',)), [('Name', (1, 17), 'd', ('Load',))])])),
|
| ('Expression', ('Compare', (1, 0), ('Num', (1, 0), 1), [('Lt',), ('Lt',)], [('Num', (1, 4), 2), ('Num', (1, 8), 3)])),
|
| ('Expression', ('Call', (1, 0), ('Name', (1, 0), 'f', ('Load',)), [('Num', (1, 2), 1), ('Num', (1, 4), 2)], [('keyword', 'c', ('Num', (1, 8), 3))], ('Name', (1, 11), 'd', ('Load',)), ('Name', (1, 15), 'e', ('Load',)))),
|
| ('Expression', ('Repr', (1, 0), ('Name', (1, 1), 'v', ('Load',)))),
|
| ('Expression', ('Num', (1, 0), 10L)),
|
| ('Expression', ('Str', (1, 0), 'string')),
|
| ('Expression', ('Attribute', (1, 0), ('Name', (1, 0), 'a', ('Load',)), 'b', ('Load',))),
|
| ('Expression', ('Subscript', (1, 0), ('Name', (1, 0), 'a', ('Load',)), ('Slice', ('Name', (1, 2), 'b', ('Load',)), ('Name', (1, 4), 'c', ('Load',)), None), ('Load',))),
|
| ('Expression', ('Name', (1, 0), 'v', ('Load',))),
|
| ('Expression', ('List', (1, 0), [('Num', (1, 1), 1), ('Num', (1, 3), 2), ('Num', (1, 5), 3)], ('Load',))),
|
| ('Expression', ('Tuple', (1, 0), [('Num', (1, 0), 1), ('Num', (1, 2), 2), ('Num', (1, 4), 3)], ('Load',))),
|
| ('Expression', ('Call', (1, 0), ('Attribute', (1, 0), ('Attribute', (1, 0), ('Attribute', (1, 0), ('Name', (1, 0), 'a', ('Load',)), 'b', ('Load',)), 'c', ('Load',)), 'd', ('Load',)), [('Subscript', (1, 8), ('Attribute', (1, 8), ('Name', (1, 8), 'a', ('Load',)), 'b', ('Load',)), ('Slice', ('Num', (1, 12), 1), ('Num', (1, 14), 2), None), ('Load',))], [], None, None)),
|
| ]
|
| main()
|
