mirror of
https://github.com/python/cpython.git
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986 lines
42 KiB
Python
986 lines
42 KiB
Python
import os
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import sys
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import unittest
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from test import support
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import ast
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def to_tuple(t):
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if t is None or isinstance(t, (str, int, complex)):
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return t
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elif isinstance(t, list):
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return [to_tuple(e) for e in t]
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result = [t.__class__.__name__]
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if hasattr(t, 'lineno') and hasattr(t, 'col_offset'):
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result.append((t.lineno, t.col_offset))
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if t._fields is None:
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return tuple(result)
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for f in t._fields:
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result.append(to_tuple(getattr(t, f)))
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return tuple(result)
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# These tests are compiled through "exec"
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# There should be atleast one test per statement
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exec_tests = [
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# None
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"None",
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# FunctionDef
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"def f(): pass",
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# FunctionDef with arg
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"def f(a): pass",
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# FunctionDef with arg and default value
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"def f(a=0): pass",
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# FunctionDef with varargs
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"def f(*args): pass",
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# FunctionDef with kwargs
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"def f(**kwargs): pass",
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# FunctionDef with all kind of args
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"def f(a, b=1, c=None, d=[], e={}, *args, **kwargs): pass",
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# ClassDef
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"class C:pass",
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# ClassDef, new style class
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"class C(object): pass",
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# Return
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"def f():return 1",
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# Delete
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"del v",
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# Assign
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"v = 1",
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# AugAssign
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"v += 1",
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# For
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"for v in v:pass",
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# While
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"while v:pass",
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# If
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"if v:pass",
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# With
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"with x as y: pass",
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"with x as y, z as q: pass",
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# Raise
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"raise Exception('string')",
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# TryExcept
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"try:\n pass\nexcept Exception:\n pass",
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# TryFinally
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"try:\n pass\nfinally:\n pass",
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# Assert
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"assert v",
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# Import
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"import sys",
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# ImportFrom
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"from sys import v",
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# Global
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"global v",
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# Expr
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"1",
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# Pass,
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"pass",
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# Break
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"break",
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# Continue
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"continue",
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# for statements with naked tuples (see http://bugs.python.org/issue6704)
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"for a,b in c: pass",
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"[(a,b) for a,b in c]",
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"((a,b) for a,b in c)",
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"((a,b) for (a,b) in c)",
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# Multiline generator expression (test for .lineno & .col_offset)
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"""(
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(
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Aa
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,
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Bb
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)
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for
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Aa
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,
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Bb in Cc
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)""",
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# dictcomp
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"{a : b for w in x for m in p if g}",
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# dictcomp with naked tuple
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"{a : b for v,w in x}",
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# setcomp
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"{r for l in x if g}",
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# setcomp with naked tuple
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"{r for l,m in x}",
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]
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# These are compiled through "single"
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# because of overlap with "eval", it just tests what
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# can't be tested with "eval"
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single_tests = [
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"1+2"
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]
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# These are compiled through "eval"
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# It should test all expressions
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eval_tests = [
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# None
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"None",
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# BoolOp
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"a and b",
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# BinOp
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"a + b",
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# UnaryOp
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"not v",
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# Lambda
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"lambda:None",
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# Dict
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"{ 1:2 }",
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# Empty dict
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"{}",
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# Set
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"{None,}",
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# Multiline dict (test for .lineno & .col_offset)
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"""{
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1
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:
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2
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}""",
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# ListComp
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"[a for b in c if d]",
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# GeneratorExp
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"(a for b in c if d)",
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# Yield - yield expressions can't work outside a function
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#
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# Compare
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"1 < 2 < 3",
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# Call
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"f(1,2,c=3,*d,**e)",
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# Num
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"10",
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# Str
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"'string'",
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# Attribute
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"a.b",
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# Subscript
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"a[b:c]",
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# Name
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"v",
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# List
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"[1,2,3]",
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# Empty list
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"[]",
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# Tuple
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"1,2,3",
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# Tuple
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"(1,2,3)",
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# Empty tuple
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"()",
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# Combination
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"a.b.c.d(a.b[1:2])",
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]
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# TODO: expr_context, slice, boolop, operator, unaryop, cmpop, comprehension
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# excepthandler, arguments, keywords, alias
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class AST_Tests(unittest.TestCase):
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def _assertTrueorder(self, ast_node, parent_pos):
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if not isinstance(ast_node, ast.AST) or ast_node._fields is None:
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return
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if isinstance(ast_node, (ast.expr, ast.stmt, ast.excepthandler)):
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node_pos = (ast_node.lineno, ast_node.col_offset)
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self.assertTrue(node_pos >= parent_pos)
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parent_pos = (ast_node.lineno, ast_node.col_offset)
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for name in ast_node._fields:
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value = getattr(ast_node, name)
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if isinstance(value, list):
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for child in value:
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self._assertTrueorder(child, parent_pos)
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elif value is not None:
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self._assertTrueorder(value, parent_pos)
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def test_AST_objects(self):
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x = ast.AST()
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self.assertEqual(x._fields, ())
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with self.assertRaises(AttributeError):
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x.vararg
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with self.assertRaises(AttributeError):
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x.foobar = 21
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with self.assertRaises(AttributeError):
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ast.AST(lineno=2)
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with self.assertRaises(TypeError):
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# "_ast.AST constructor takes 0 positional arguments"
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ast.AST(2)
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def test_snippets(self):
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for input, output, kind in ((exec_tests, exec_results, "exec"),
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(single_tests, single_results, "single"),
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(eval_tests, eval_results, "eval")):
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for i, o in zip(input, output):
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ast_tree = compile(i, "?", kind, ast.PyCF_ONLY_AST)
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self.assertEqual(to_tuple(ast_tree), o)
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self._assertTrueorder(ast_tree, (0, 0))
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def test_slice(self):
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slc = ast.parse("x[::]").body[0].value.slice
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self.assertIsNone(slc.upper)
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self.assertIsNone(slc.lower)
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self.assertIsNone(slc.step)
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def test_from_import(self):
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im = ast.parse("from . import y").body[0]
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self.assertIsNone(im.module)
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def test_base_classes(self):
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self.assertTrue(issubclass(ast.For, ast.stmt))
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self.assertTrue(issubclass(ast.Name, ast.expr))
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self.assertTrue(issubclass(ast.stmt, ast.AST))
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self.assertTrue(issubclass(ast.expr, ast.AST))
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self.assertTrue(issubclass(ast.comprehension, ast.AST))
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self.assertTrue(issubclass(ast.Gt, ast.AST))
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def test_field_attr_existence(self):
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for name, item in ast.__dict__.items():
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if isinstance(item, type) and name != 'AST' and name[0].isupper():
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x = item()
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if isinstance(x, ast.AST):
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self.assertEqual(type(x._fields), tuple)
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def test_arguments(self):
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x = ast.arguments()
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self.assertEqual(x._fields, ('args', 'vararg', 'varargannotation',
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'kwonlyargs', 'kwarg', 'kwargannotation',
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'defaults', 'kw_defaults'))
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with self.assertRaises(AttributeError):
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x.vararg
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x = ast.arguments(*range(1, 9))
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self.assertEqual(x.vararg, 2)
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def test_field_attr_writable(self):
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x = ast.Num()
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# We can assign to _fields
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x._fields = 666
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self.assertEqual(x._fields, 666)
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def test_classattrs(self):
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x = ast.Num()
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self.assertEqual(x._fields, ('n',))
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with self.assertRaises(AttributeError):
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x.n
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x = ast.Num(42)
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self.assertEqual(x.n, 42)
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with self.assertRaises(AttributeError):
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x.lineno
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with self.assertRaises(AttributeError):
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x.foobar
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x = ast.Num(lineno=2)
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self.assertEqual(x.lineno, 2)
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x = ast.Num(42, lineno=0)
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self.assertEqual(x.lineno, 0)
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self.assertEqual(x._fields, ('n',))
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self.assertEqual(x.n, 42)
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self.assertRaises(TypeError, ast.Num, 1, 2)
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self.assertRaises(TypeError, ast.Num, 1, 2, lineno=0)
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def test_module(self):
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body = [ast.Num(42)]
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x = ast.Module(body)
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self.assertEqual(x.body, body)
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def test_nodeclasses(self):
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# Zero arguments constructor explicitely allowed
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x = ast.BinOp()
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self.assertEqual(x._fields, ('left', 'op', 'right'))
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# Random attribute allowed too
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x.foobarbaz = 5
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self.assertEqual(x.foobarbaz, 5)
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n1 = ast.Num(1)
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n3 = ast.Num(3)
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addop = ast.Add()
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x = ast.BinOp(n1, addop, n3)
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self.assertEqual(x.left, n1)
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self.assertEqual(x.op, addop)
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self.assertEqual(x.right, n3)
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x = ast.BinOp(1, 2, 3)
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self.assertEqual(x.left, 1)
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self.assertEqual(x.op, 2)
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self.assertEqual(x.right, 3)
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x = ast.BinOp(1, 2, 3, lineno=0)
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self.assertEqual(x.left, 1)
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self.assertEqual(x.op, 2)
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self.assertEqual(x.right, 3)
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self.assertEqual(x.lineno, 0)
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# node raises exception when not given enough arguments
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self.assertRaises(TypeError, ast.BinOp, 1, 2)
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# node raises exception when given too many arguments
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self.assertRaises(TypeError, ast.BinOp, 1, 2, 3, 4)
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# node raises exception when not given enough arguments
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self.assertRaises(TypeError, ast.BinOp, 1, 2, lineno=0)
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# node raises exception when given too many arguments
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self.assertRaises(TypeError, ast.BinOp, 1, 2, 3, 4, lineno=0)
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# can set attributes through kwargs too
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x = ast.BinOp(left=1, op=2, right=3, lineno=0)
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self.assertEqual(x.left, 1)
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self.assertEqual(x.op, 2)
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self.assertEqual(x.right, 3)
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self.assertEqual(x.lineno, 0)
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# Random kwargs also allowed
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x = ast.BinOp(1, 2, 3, foobarbaz=42)
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self.assertEqual(x.foobarbaz, 42)
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def test_no_fields(self):
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# this used to fail because Sub._fields was None
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x = ast.Sub()
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self.assertEqual(x._fields, ())
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def test_pickling(self):
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import pickle
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mods = [pickle]
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try:
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import cPickle
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mods.append(cPickle)
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except ImportError:
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pass
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protocols = [0, 1, 2]
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for mod in mods:
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for protocol in protocols:
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for ast in (compile(i, "?", "exec", 0x400) for i in exec_tests):
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ast2 = mod.loads(mod.dumps(ast, protocol))
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self.assertEqual(to_tuple(ast2), to_tuple(ast))
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def test_invalid_sum(self):
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pos = dict(lineno=2, col_offset=3)
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m = ast.Module([ast.Expr(ast.expr(**pos), **pos)])
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with self.assertRaises(TypeError) as cm:
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compile(m, "<test>", "exec")
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self.assertIn("but got <_ast.expr", str(cm.exception))
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def test_invalid_identitifer(self):
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m = ast.Module([ast.Expr(ast.Name(42, ast.Load()))])
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ast.fix_missing_locations(m)
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with self.assertRaises(TypeError) as cm:
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compile(m, "<test>", "exec")
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self.assertIn("identifier must be of type str", str(cm.exception))
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def test_invalid_string(self):
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m = ast.Module([ast.Expr(ast.Str(42))])
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ast.fix_missing_locations(m)
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with self.assertRaises(TypeError) as cm:
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compile(m, "<test>", "exec")
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self.assertIn("string must be of type str", str(cm.exception))
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class ASTHelpers_Test(unittest.TestCase):
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def test_parse(self):
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a = ast.parse('foo(1 + 1)')
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b = compile('foo(1 + 1)', '<unknown>', 'exec', ast.PyCF_ONLY_AST)
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self.assertEqual(ast.dump(a), ast.dump(b))
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def test_dump(self):
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node = ast.parse('spam(eggs, "and cheese")')
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self.assertEqual(ast.dump(node),
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"Module(body=[Expr(value=Call(func=Name(id='spam', ctx=Load()), "
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"args=[Name(id='eggs', ctx=Load()), Str(s='and cheese')], "
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"keywords=[], starargs=None, kwargs=None))])"
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)
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self.assertEqual(ast.dump(node, annotate_fields=False),
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"Module([Expr(Call(Name('spam', Load()), [Name('eggs', Load()), "
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"Str('and cheese')], [], None, None))])"
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)
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self.assertEqual(ast.dump(node, include_attributes=True),
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"Module(body=[Expr(value=Call(func=Name(id='spam', ctx=Load(), "
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"lineno=1, col_offset=0), args=[Name(id='eggs', ctx=Load(), "
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"lineno=1, col_offset=5), Str(s='and cheese', lineno=1, "
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"col_offset=11)], keywords=[], starargs=None, kwargs=None, "
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"lineno=1, col_offset=0), lineno=1, col_offset=0)])"
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)
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def test_copy_location(self):
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src = ast.parse('1 + 1', mode='eval')
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src.body.right = ast.copy_location(ast.Num(2), src.body.right)
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self.assertEqual(ast.dump(src, include_attributes=True),
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'Expression(body=BinOp(left=Num(n=1, lineno=1, col_offset=0), '
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'op=Add(), right=Num(n=2, lineno=1, col_offset=4), lineno=1, '
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'col_offset=0))'
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)
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def test_fix_missing_locations(self):
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src = ast.parse('write("spam")')
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src.body.append(ast.Expr(ast.Call(ast.Name('spam', ast.Load()),
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[ast.Str('eggs')], [], None, None)))
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self.assertEqual(src, ast.fix_missing_locations(src))
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self.assertEqual(ast.dump(src, include_attributes=True),
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"Module(body=[Expr(value=Call(func=Name(id='write', ctx=Load(), "
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"lineno=1, col_offset=0), args=[Str(s='spam', lineno=1, "
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"col_offset=6)], keywords=[], starargs=None, kwargs=None, "
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"lineno=1, col_offset=0), lineno=1, col_offset=0), "
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"Expr(value=Call(func=Name(id='spam', ctx=Load(), lineno=1, "
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"col_offset=0), args=[Str(s='eggs', lineno=1, col_offset=0)], "
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"keywords=[], starargs=None, kwargs=None, lineno=1, "
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"col_offset=0), lineno=1, col_offset=0)])"
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)
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def test_increment_lineno(self):
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src = ast.parse('1 + 1', mode='eval')
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self.assertEqual(ast.increment_lineno(src, n=3), src)
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self.assertEqual(ast.dump(src, include_attributes=True),
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'Expression(body=BinOp(left=Num(n=1, lineno=4, col_offset=0), '
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'op=Add(), right=Num(n=1, lineno=4, col_offset=4), lineno=4, '
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'col_offset=0))'
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)
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# issue10869: do not increment lineno of root twice
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src = ast.parse('1 + 1', mode='eval')
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self.assertEqual(ast.increment_lineno(src.body, n=3), src.body)
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self.assertEqual(ast.dump(src, include_attributes=True),
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'Expression(body=BinOp(left=Num(n=1, lineno=4, col_offset=0), '
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'op=Add(), right=Num(n=1, lineno=4, col_offset=4), lineno=4, '
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'col_offset=0))'
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)
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def test_iter_fields(self):
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node = ast.parse('foo()', mode='eval')
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d = dict(ast.iter_fields(node.body))
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self.assertEqual(d.pop('func').id, 'foo')
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self.assertEqual(d, {'keywords': [], 'kwargs': None,
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'args': [], 'starargs': None})
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def test_iter_child_nodes(self):
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node = ast.parse("spam(23, 42, eggs='leek')", mode='eval')
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self.assertEqual(len(list(ast.iter_child_nodes(node.body))), 4)
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iterator = ast.iter_child_nodes(node.body)
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self.assertEqual(next(iterator).id, 'spam')
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self.assertEqual(next(iterator).n, 23)
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self.assertEqual(next(iterator).n, 42)
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self.assertEqual(ast.dump(next(iterator)),
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"keyword(arg='eggs', value=Str(s='leek'))"
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)
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def test_get_docstring(self):
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node = ast.parse('def foo():\n """line one\n line two"""')
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self.assertEqual(ast.get_docstring(node.body[0]),
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'line one\nline two')
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def test_literal_eval(self):
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self.assertEqual(ast.literal_eval('[1, 2, 3]'), [1, 2, 3])
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self.assertEqual(ast.literal_eval('{"foo": 42}'), {"foo": 42})
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self.assertEqual(ast.literal_eval('(True, False, None)'), (True, False, None))
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self.assertEqual(ast.literal_eval('{1, 2, 3}'), {1, 2, 3})
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self.assertEqual(ast.literal_eval('b"hi"'), b"hi")
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self.assertRaises(ValueError, ast.literal_eval, 'foo()')
|
|
self.assertEqual(ast.literal_eval('-6'), -6)
|
|
self.assertEqual(ast.literal_eval('-6j+3'), 3-6j)
|
|
self.assertEqual(ast.literal_eval('3.25'), 3.25)
|
|
|
|
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)
|
|
|
|
|
|
class ASTValidatorTests(unittest.TestCase):
|
|
|
|
def mod(self, mod, msg=None, mode="exec", *, exc=ValueError):
|
|
mod.lineno = mod.col_offset = 0
|
|
ast.fix_missing_locations(mod)
|
|
with self.assertRaises(exc) as cm:
|
|
compile(mod, "<test>", mode)
|
|
if msg is not None:
|
|
self.assertIn(msg, str(cm.exception))
|
|
|
|
def expr(self, node, msg=None, *, exc=ValueError):
|
|
mod = ast.Module([ast.Expr(node)])
|
|
self.mod(mod, msg, exc=exc)
|
|
|
|
def stmt(self, stmt, msg=None):
|
|
mod = ast.Module([stmt])
|
|
self.mod(mod, msg)
|
|
|
|
def test_module(self):
|
|
m = ast.Interactive([ast.Expr(ast.Name("x", ast.Store()))])
|
|
self.mod(m, "must have Load context", "single")
|
|
m = ast.Expression(ast.Name("x", ast.Store()))
|
|
self.mod(m, "must have Load context", "eval")
|
|
|
|
def _check_arguments(self, fac, check):
|
|
def arguments(args=None, vararg=None, varargannotation=None,
|
|
kwonlyargs=None, kwarg=None, kwargannotation=None,
|
|
defaults=None, kw_defaults=None):
|
|
if args is None:
|
|
args = []
|
|
if kwonlyargs is None:
|
|
kwonlyargs = []
|
|
if defaults is None:
|
|
defaults = []
|
|
if kw_defaults is None:
|
|
kw_defaults = []
|
|
args = ast.arguments(args, vararg, varargannotation, kwonlyargs,
|
|
kwarg, kwargannotation, defaults, kw_defaults)
|
|
return fac(args)
|
|
args = [ast.arg("x", ast.Name("x", ast.Store()))]
|
|
check(arguments(args=args), "must have Load context")
|
|
check(arguments(varargannotation=ast.Num(3)),
|
|
"varargannotation but no vararg")
|
|
check(arguments(varargannotation=ast.Name("x", ast.Store()), vararg="x"),
|
|
"must have Load context")
|
|
check(arguments(kwonlyargs=args), "must have Load context")
|
|
check(arguments(kwargannotation=ast.Num(42)),
|
|
"kwargannotation but no kwarg")
|
|
check(arguments(kwargannotation=ast.Name("x", ast.Store()),
|
|
kwarg="x"), "must have Load context")
|
|
check(arguments(defaults=[ast.Num(3)]),
|
|
"more positional defaults than args")
|
|
check(arguments(kw_defaults=[ast.Num(4)]),
|
|
"length of kwonlyargs is not the same as kw_defaults")
|
|
args = [ast.arg("x", ast.Name("x", ast.Load()))]
|
|
check(arguments(args=args, defaults=[ast.Name("x", ast.Store())]),
|
|
"must have Load context")
|
|
args = [ast.arg("a", ast.Name("x", ast.Load())),
|
|
ast.arg("b", ast.Name("y", ast.Load()))]
|
|
check(arguments(kwonlyargs=args,
|
|
kw_defaults=[None, ast.Name("x", ast.Store())]),
|
|
"must have Load context")
|
|
|
|
def test_funcdef(self):
|
|
a = ast.arguments([], None, None, [], None, None, [], [])
|
|
f = ast.FunctionDef("x", a, [], [], None)
|
|
self.stmt(f, "empty body on FunctionDef")
|
|
f = ast.FunctionDef("x", a, [ast.Pass()], [ast.Name("x", ast.Store())],
|
|
None)
|
|
self.stmt(f, "must have Load context")
|
|
f = ast.FunctionDef("x", a, [ast.Pass()], [],
|
|
ast.Name("x", ast.Store()))
|
|
self.stmt(f, "must have Load context")
|
|
def fac(args):
|
|
return ast.FunctionDef("x", args, [ast.Pass()], [], None)
|
|
self._check_arguments(fac, self.stmt)
|
|
|
|
def test_classdef(self):
|
|
def cls(bases=None, keywords=None, starargs=None, kwargs=None,
|
|
body=None, decorator_list=None):
|
|
if bases is None:
|
|
bases = []
|
|
if keywords is None:
|
|
keywords = []
|
|
if body is None:
|
|
body = [ast.Pass()]
|
|
if decorator_list is None:
|
|
decorator_list = []
|
|
return ast.ClassDef("myclass", bases, keywords, starargs,
|
|
kwargs, body, decorator_list)
|
|
self.stmt(cls(bases=[ast.Name("x", ast.Store())]),
|
|
"must have Load context")
|
|
self.stmt(cls(keywords=[ast.keyword("x", ast.Name("x", ast.Store()))]),
|
|
"must have Load context")
|
|
self.stmt(cls(starargs=ast.Name("x", ast.Store())),
|
|
"must have Load context")
|
|
self.stmt(cls(kwargs=ast.Name("x", ast.Store())),
|
|
"must have Load context")
|
|
self.stmt(cls(body=[]), "empty body on ClassDef")
|
|
self.stmt(cls(body=[None]), "None disallowed")
|
|
self.stmt(cls(decorator_list=[ast.Name("x", ast.Store())]),
|
|
"must have Load context")
|
|
|
|
def test_delete(self):
|
|
self.stmt(ast.Delete([]), "empty targets on Delete")
|
|
self.stmt(ast.Delete([None]), "None disallowed")
|
|
self.stmt(ast.Delete([ast.Name("x", ast.Load())]),
|
|
"must have Del context")
|
|
|
|
def test_assign(self):
|
|
self.stmt(ast.Assign([], ast.Num(3)), "empty targets on Assign")
|
|
self.stmt(ast.Assign([None], ast.Num(3)), "None disallowed")
|
|
self.stmt(ast.Assign([ast.Name("x", ast.Load())], ast.Num(3)),
|
|
"must have Store context")
|
|
self.stmt(ast.Assign([ast.Name("x", ast.Store())],
|
|
ast.Name("y", ast.Store())),
|
|
"must have Load context")
|
|
|
|
def test_augassign(self):
|
|
aug = ast.AugAssign(ast.Name("x", ast.Load()), ast.Add(),
|
|
ast.Name("y", ast.Load()))
|
|
self.stmt(aug, "must have Store context")
|
|
aug = ast.AugAssign(ast.Name("x", ast.Store()), ast.Add(),
|
|
ast.Name("y", ast.Store()))
|
|
self.stmt(aug, "must have Load context")
|
|
|
|
def test_for(self):
|
|
x = ast.Name("x", ast.Store())
|
|
y = ast.Name("y", ast.Load())
|
|
p = ast.Pass()
|
|
self.stmt(ast.For(x, y, [], []), "empty body on For")
|
|
self.stmt(ast.For(ast.Name("x", ast.Load()), y, [p], []),
|
|
"must have Store context")
|
|
self.stmt(ast.For(x, ast.Name("y", ast.Store()), [p], []),
|
|
"must have Load context")
|
|
e = ast.Expr(ast.Name("x", ast.Store()))
|
|
self.stmt(ast.For(x, y, [e], []), "must have Load context")
|
|
self.stmt(ast.For(x, y, [p], [e]), "must have Load context")
|
|
|
|
def test_while(self):
|
|
self.stmt(ast.While(ast.Num(3), [], []), "empty body on While")
|
|
self.stmt(ast.While(ast.Name("x", ast.Store()), [ast.Pass()], []),
|
|
"must have Load context")
|
|
self.stmt(ast.While(ast.Num(3), [ast.Pass()],
|
|
[ast.Expr(ast.Name("x", ast.Store()))]),
|
|
"must have Load context")
|
|
|
|
def test_if(self):
|
|
self.stmt(ast.If(ast.Num(3), [], []), "empty body on If")
|
|
i = ast.If(ast.Name("x", ast.Store()), [ast.Pass()], [])
|
|
self.stmt(i, "must have Load context")
|
|
i = ast.If(ast.Num(3), [ast.Expr(ast.Name("x", ast.Store()))], [])
|
|
self.stmt(i, "must have Load context")
|
|
i = ast.If(ast.Num(3), [ast.Pass()],
|
|
[ast.Expr(ast.Name("x", ast.Store()))])
|
|
self.stmt(i, "must have Load context")
|
|
|
|
def test_with(self):
|
|
p = ast.Pass()
|
|
self.stmt(ast.With([], [p]), "empty items on With")
|
|
i = ast.withitem(ast.Num(3), None)
|
|
self.stmt(ast.With([i], []), "empty body on With")
|
|
i = ast.withitem(ast.Name("x", ast.Store()), None)
|
|
self.stmt(ast.With([i], [p]), "must have Load context")
|
|
i = ast.withitem(ast.Num(3), ast.Name("x", ast.Load()))
|
|
self.stmt(ast.With([i], [p]), "must have Store context")
|
|
|
|
def test_raise(self):
|
|
r = ast.Raise(None, ast.Num(3))
|
|
self.stmt(r, "Raise with cause but no exception")
|
|
r = ast.Raise(ast.Name("x", ast.Store()), None)
|
|
self.stmt(r, "must have Load context")
|
|
r = ast.Raise(ast.Num(4), ast.Name("x", ast.Store()))
|
|
self.stmt(r, "must have Load context")
|
|
|
|
def test_try(self):
|
|
p = ast.Pass()
|
|
t = ast.Try([], [], [], [p])
|
|
self.stmt(t, "empty body on Try")
|
|
t = ast.Try([ast.Expr(ast.Name("x", ast.Store()))], [], [], [p])
|
|
self.stmt(t, "must have Load context")
|
|
t = ast.Try([p], [], [], [])
|
|
self.stmt(t, "Try has neither except handlers nor finalbody")
|
|
t = ast.Try([p], [], [p], [p])
|
|
self.stmt(t, "Try has orelse but no except handlers")
|
|
t = ast.Try([p], [ast.ExceptHandler(None, "x", [])], [], [])
|
|
self.stmt(t, "empty body on ExceptHandler")
|
|
e = [ast.ExceptHandler(ast.Name("x", ast.Store()), "y", [p])]
|
|
self.stmt(ast.Try([p], e, [], []), "must have Load context")
|
|
e = [ast.ExceptHandler(None, "x", [p])]
|
|
t = ast.Try([p], e, [ast.Expr(ast.Name("x", ast.Store()))], [p])
|
|
self.stmt(t, "must have Load context")
|
|
t = ast.Try([p], e, [p], [ast.Expr(ast.Name("x", ast.Store()))])
|
|
self.stmt(t, "must have Load context")
|
|
|
|
def test_assert(self):
|
|
self.stmt(ast.Assert(ast.Name("x", ast.Store()), None),
|
|
"must have Load context")
|
|
assrt = ast.Assert(ast.Name("x", ast.Load()),
|
|
ast.Name("y", ast.Store()))
|
|
self.stmt(assrt, "must have Load context")
|
|
|
|
def test_import(self):
|
|
self.stmt(ast.Import([]), "empty names on Import")
|
|
|
|
def test_importfrom(self):
|
|
imp = ast.ImportFrom(None, [ast.alias("x", None)], -42)
|
|
self.stmt(imp, "level less than -1")
|
|
self.stmt(ast.ImportFrom(None, [], 0), "empty names on ImportFrom")
|
|
|
|
def test_global(self):
|
|
self.stmt(ast.Global([]), "empty names on Global")
|
|
|
|
def test_nonlocal(self):
|
|
self.stmt(ast.Nonlocal([]), "empty names on Nonlocal")
|
|
|
|
def test_expr(self):
|
|
e = ast.Expr(ast.Name("x", ast.Store()))
|
|
self.stmt(e, "must have Load context")
|
|
|
|
def test_boolop(self):
|
|
b = ast.BoolOp(ast.And(), [])
|
|
self.expr(b, "less than 2 values")
|
|
b = ast.BoolOp(ast.And(), [ast.Num(3)])
|
|
self.expr(b, "less than 2 values")
|
|
b = ast.BoolOp(ast.And(), [ast.Num(4), None])
|
|
self.expr(b, "None disallowed")
|
|
b = ast.BoolOp(ast.And(), [ast.Num(4), ast.Name("x", ast.Store())])
|
|
self.expr(b, "must have Load context")
|
|
|
|
def test_unaryop(self):
|
|
u = ast.UnaryOp(ast.Not(), ast.Name("x", ast.Store()))
|
|
self.expr(u, "must have Load context")
|
|
|
|
def test_lambda(self):
|
|
a = ast.arguments([], None, None, [], None, None, [], [])
|
|
self.expr(ast.Lambda(a, ast.Name("x", ast.Store())),
|
|
"must have Load context")
|
|
def fac(args):
|
|
return ast.Lambda(args, ast.Name("x", ast.Load()))
|
|
self._check_arguments(fac, self.expr)
|
|
|
|
def test_ifexp(self):
|
|
l = ast.Name("x", ast.Load())
|
|
s = ast.Name("y", ast.Store())
|
|
for args in (s, l, l), (l, s, l), (l, l, s):
|
|
self.expr(ast.IfExp(*args), "must have Load context")
|
|
|
|
def test_dict(self):
|
|
d = ast.Dict([], [ast.Name("x", ast.Load())])
|
|
self.expr(d, "same number of keys as values")
|
|
d = ast.Dict([None], [ast.Name("x", ast.Load())])
|
|
self.expr(d, "None disallowed")
|
|
d = ast.Dict([ast.Name("x", ast.Load())], [None])
|
|
self.expr(d, "None disallowed")
|
|
|
|
def test_set(self):
|
|
self.expr(ast.Set([None]), "None disallowed")
|
|
s = ast.Set([ast.Name("x", ast.Store())])
|
|
self.expr(s, "must have Load context")
|
|
|
|
def _check_comprehension(self, fac):
|
|
self.expr(fac([]), "comprehension with no generators")
|
|
g = ast.comprehension(ast.Name("x", ast.Load()),
|
|
ast.Name("x", ast.Load()), [])
|
|
self.expr(fac([g]), "must have Store context")
|
|
g = ast.comprehension(ast.Name("x", ast.Store()),
|
|
ast.Name("x", ast.Store()), [])
|
|
self.expr(fac([g]), "must have Load context")
|
|
x = ast.Name("x", ast.Store())
|
|
y = ast.Name("y", ast.Load())
|
|
g = ast.comprehension(x, y, [None])
|
|
self.expr(fac([g]), "None disallowed")
|
|
g = ast.comprehension(x, y, [ast.Name("x", ast.Store())])
|
|
self.expr(fac([g]), "must have Load context")
|
|
|
|
def _simple_comp(self, fac):
|
|
g = ast.comprehension(ast.Name("x", ast.Store()),
|
|
ast.Name("x", ast.Load()), [])
|
|
self.expr(fac(ast.Name("x", ast.Store()), [g]),
|
|
"must have Load context")
|
|
def wrap(gens):
|
|
return fac(ast.Name("x", ast.Store()), gens)
|
|
self._check_comprehension(wrap)
|
|
|
|
def test_listcomp(self):
|
|
self._simple_comp(ast.ListComp)
|
|
|
|
def test_setcomp(self):
|
|
self._simple_comp(ast.SetComp)
|
|
|
|
def test_generatorexp(self):
|
|
self._simple_comp(ast.GeneratorExp)
|
|
|
|
def test_dictcomp(self):
|
|
g = ast.comprehension(ast.Name("y", ast.Store()),
|
|
ast.Name("p", ast.Load()), [])
|
|
c = ast.DictComp(ast.Name("x", ast.Store()),
|
|
ast.Name("y", ast.Load()), [g])
|
|
self.expr(c, "must have Load context")
|
|
c = ast.DictComp(ast.Name("x", ast.Load()),
|
|
ast.Name("y", ast.Store()), [g])
|
|
self.expr(c, "must have Load context")
|
|
def factory(comps):
|
|
k = ast.Name("x", ast.Load())
|
|
v = ast.Name("y", ast.Load())
|
|
return ast.DictComp(k, v, comps)
|
|
self._check_comprehension(factory)
|
|
|
|
def test_yield(self):
|
|
self.expr(ast.Yield(ast.Name("x", ast.Store())), "must have Load")
|
|
|
|
def test_compare(self):
|
|
left = ast.Name("x", ast.Load())
|
|
comp = ast.Compare(left, [ast.In()], [])
|
|
self.expr(comp, "no comparators")
|
|
comp = ast.Compare(left, [ast.In()], [ast.Num(4), ast.Num(5)])
|
|
self.expr(comp, "different number of comparators and operands")
|
|
comp = ast.Compare(ast.Num("blah"), [ast.In()], [left])
|
|
self.expr(comp, "non-numeric", exc=TypeError)
|
|
comp = ast.Compare(left, [ast.In()], [ast.Num("blah")])
|
|
self.expr(comp, "non-numeric", exc=TypeError)
|
|
|
|
def test_call(self):
|
|
func = ast.Name("x", ast.Load())
|
|
args = [ast.Name("y", ast.Load())]
|
|
keywords = [ast.keyword("w", ast.Name("z", ast.Load()))]
|
|
stararg = ast.Name("p", ast.Load())
|
|
kwarg = ast.Name("q", ast.Load())
|
|
call = ast.Call(ast.Name("x", ast.Store()), args, keywords, stararg,
|
|
kwarg)
|
|
self.expr(call, "must have Load context")
|
|
call = ast.Call(func, [None], keywords, stararg, kwarg)
|
|
self.expr(call, "None disallowed")
|
|
bad_keywords = [ast.keyword("w", ast.Name("z", ast.Store()))]
|
|
call = ast.Call(func, args, bad_keywords, stararg, kwarg)
|
|
self.expr(call, "must have Load context")
|
|
call = ast.Call(func, args, keywords, ast.Name("z", ast.Store()), kwarg)
|
|
self.expr(call, "must have Load context")
|
|
call = ast.Call(func, args, keywords, stararg,
|
|
ast.Name("w", ast.Store()))
|
|
self.expr(call, "must have Load context")
|
|
|
|
def test_num(self):
|
|
class subint(int):
|
|
pass
|
|
class subfloat(float):
|
|
pass
|
|
class subcomplex(complex):
|
|
pass
|
|
for obj in "0", "hello", subint(), subfloat(), subcomplex():
|
|
self.expr(ast.Num(obj), "non-numeric", exc=TypeError)
|
|
|
|
def test_attribute(self):
|
|
attr = ast.Attribute(ast.Name("x", ast.Store()), "y", ast.Load())
|
|
self.expr(attr, "must have Load context")
|
|
|
|
def test_subscript(self):
|
|
sub = ast.Subscript(ast.Name("x", ast.Store()), ast.Index(ast.Num(3)),
|
|
ast.Load())
|
|
self.expr(sub, "must have Load context")
|
|
x = ast.Name("x", ast.Load())
|
|
sub = ast.Subscript(x, ast.Index(ast.Name("y", ast.Store())),
|
|
ast.Load())
|
|
self.expr(sub, "must have Load context")
|
|
s = ast.Name("x", ast.Store())
|
|
for args in (s, None, None), (None, s, None), (None, None, s):
|
|
sl = ast.Slice(*args)
|
|
self.expr(ast.Subscript(x, sl, ast.Load()),
|
|
"must have Load context")
|
|
sl = ast.ExtSlice([])
|
|
self.expr(ast.Subscript(x, sl, ast.Load()), "empty dims on ExtSlice")
|
|
sl = ast.ExtSlice([ast.Index(s)])
|
|
self.expr(ast.Subscript(x, sl, ast.Load()), "must have Load context")
|
|
|
|
def test_starred(self):
|
|
left = ast.List([ast.Starred(ast.Name("x", ast.Load()), ast.Store())],
|
|
ast.Store())
|
|
assign = ast.Assign([left], ast.Num(4))
|
|
self.stmt(assign, "must have Store context")
|
|
|
|
def _sequence(self, fac):
|
|
self.expr(fac([None], ast.Load()), "None disallowed")
|
|
self.expr(fac([ast.Name("x", ast.Store())], ast.Load()),
|
|
"must have Load context")
|
|
|
|
def test_list(self):
|
|
self._sequence(ast.List)
|
|
|
|
def test_tuple(self):
|
|
self._sequence(ast.Tuple)
|
|
|
|
def test_stdlib_validates(self):
|
|
stdlib = os.path.dirname(ast.__file__)
|
|
tests = [fn for fn in os.listdir(stdlib) if fn.endswith(".py")]
|
|
tests.extend(["test/test_grammar.py", "test/test_unpack_ex.py"])
|
|
for module in tests:
|
|
fn = os.path.join(stdlib, module)
|
|
with open(fn, "r", encoding="utf-8") as fp:
|
|
source = fp.read()
|
|
mod = ast.parse(source)
|
|
compile(mod, fn, "exec")
|
|
|
|
|
|
def test_main():
|
|
support.run_unittest(AST_Tests, ASTHelpers_Test, ASTValidatorTests)
|
|
|
|
def main():
|
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if __name__ != '__main__':
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return
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if sys.argv[1:] == ['-g']:
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for statements, kind in ((exec_tests, "exec"), (single_tests, "single"),
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(eval_tests, "eval")):
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print(kind+"_results = [")
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for s in statements:
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print(repr(to_tuple(compile(s, "?", kind, 0x400)))+",")
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print("]")
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print("main()")
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raise SystemExit
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test_main()
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#### EVERYTHING BELOW IS GENERATED #####
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exec_results = [
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('Module', [('Expr', (1, 0), ('Name', (1, 0), 'None', ('Load',)))]),
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('Module', [('FunctionDef', (1, 0), 'f', ('arguments', [], None, None, [], None, None, [], []), [('Pass', (1, 9))], [], None)]),
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('Module', [('FunctionDef', (1, 0), 'f', ('arguments', [('arg', 'a', None)], None, None, [], None, None, [], []), [('Pass', (1, 10))], [], None)]),
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('Module', [('FunctionDef', (1, 0), 'f', ('arguments', [('arg', 'a', None)], None, None, [], None, None, [('Num', (1, 8), 0)], []), [('Pass', (1, 12))], [], None)]),
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('Module', [('FunctionDef', (1, 0), 'f', ('arguments', [], 'args', None, [], None, None, [], []), [('Pass', (1, 14))], [], None)]),
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('Module', [('FunctionDef', (1, 0), 'f', ('arguments', [], None, None, [], 'kwargs', None, [], []), [('Pass', (1, 17))], [], None)]),
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('Module', [('FunctionDef', (1, 0), 'f', ('arguments', [('arg', 'a', None), ('arg', 'b', None), ('arg', 'c', None), ('arg', 'd', None), ('arg', 'e', None)], 'args', None, [], 'kwargs', None, [('Num', (1, 11), 1), ('Name', (1, 16), 'None', ('Load',)), ('List', (1, 24), [], ('Load',)), ('Dict', (1, 30), [], [])], []), [('Pass', (1, 52))], [], None)]),
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('Module', [('ClassDef', (1, 0), 'C', [], [], None, None, [('Pass', (1, 8))], [])]),
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('Module', [('ClassDef', (1, 0), 'C', [('Name', (1, 8), 'object', ('Load',))], [], None, None, [('Pass', (1, 17))], [])]),
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('Module', [('FunctionDef', (1, 0), 'f', ('arguments', [], None, None, [], None, None, [], []), [('Return', (1, 8), ('Num', (1, 15), 1))], [], None)]),
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('Module', [('Delete', (1, 0), [('Name', (1, 4), 'v', ('Del',))])]),
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('Module', [('Assign', (1, 0), [('Name', (1, 0), 'v', ('Store',))], ('Num', (1, 4), 1))]),
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('Module', [('AugAssign', (1, 0), ('Name', (1, 0), 'v', ('Store',)), ('Add',), ('Num', (1, 5), 1))]),
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('Module', [('For', (1, 0), ('Name', (1, 4), 'v', ('Store',)), ('Name', (1, 9), 'v', ('Load',)), [('Pass', (1, 11))], [])]),
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('Module', [('While', (1, 0), ('Name', (1, 6), 'v', ('Load',)), [('Pass', (1, 8))], [])]),
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('Module', [('If', (1, 0), ('Name', (1, 3), 'v', ('Load',)), [('Pass', (1, 5))], [])]),
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('Module', [('With', (1, 0), [('withitem', ('Name', (1, 5), 'x', ('Load',)), ('Name', (1, 10), 'y', ('Store',)))], [('Pass', (1, 13))])]),
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('Module', [('With', (1, 0), [('withitem', ('Name', (1, 5), 'x', ('Load',)), ('Name', (1, 10), 'y', ('Store',))), ('withitem', ('Name', (1, 13), 'z', ('Load',)), ('Name', (1, 18), 'q', ('Store',)))], [('Pass', (1, 21))])]),
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('Module', [('Raise', (1, 0), ('Call', (1, 6), ('Name', (1, 6), 'Exception', ('Load',)), [('Str', (1, 16), 'string')], [], None, None), None)]),
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('Module', [('Try', (1, 0), [('Pass', (2, 2))], [('ExceptHandler', (3, 0), ('Name', (3, 7), 'Exception', ('Load',)), None, [('Pass', (4, 2))])], [], [])]),
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('Module', [('Try', (1, 0), [('Pass', (2, 2))], [], [], [('Pass', (4, 2))])]),
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('Module', [('Assert', (1, 0), ('Name', (1, 7), 'v', ('Load',)), None)]),
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('Module', [('Import', (1, 0), [('alias', 'sys', None)])]),
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('Module', [('ImportFrom', (1, 0), 'sys', [('alias', 'v', None)], 0)]),
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('Module', [('Global', (1, 0), ['v'])]),
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('Module', [('Expr', (1, 0), ('Num', (1, 0), 1))]),
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('Module', [('Pass', (1, 0))]),
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('Module', [('Break', (1, 0))]),
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('Module', [('Continue', (1, 0))]),
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('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))], [])]),
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('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',)), [])]))]),
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('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',)), [])]))]),
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('Module', [('Expr', (1, 0), ('GeneratorExp', (1, 1), ('Tuple', (1, 2), [('Name', (1, 2), 'a', ('Load',)), ('Name', (1, 4), 'b', ('Load',))], ('Load',)), [('comprehension', ('Tuple', (1, 12), [('Name', (1, 12), 'a', ('Store',)), ('Name', (1, 14), 'b', ('Store',))], ('Store',)), ('Name', (1, 20), 'c', ('Load',)), [])]))]),
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('Module', [('Expr', (1, 0), ('GeneratorExp', (2, 4), ('Tuple', (3, 4), [('Name', (3, 4), 'Aa', ('Load',)), ('Name', (5, 7), 'Bb', ('Load',))], ('Load',)), [('comprehension', ('Tuple', (8, 4), [('Name', (8, 4), 'Aa', ('Store',)), ('Name', (10, 4), 'Bb', ('Store',))], ('Store',)), ('Name', (10, 10), 'Cc', ('Load',)), [])]))]),
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('Module', [('Expr', (1, 0), ('DictComp', (1, 1), ('Name', (1, 1), 'a', ('Load',)), ('Name', (1, 5), 'b', ('Load',)), [('comprehension', ('Name', (1, 11), 'w', ('Store',)), ('Name', (1, 16), 'x', ('Load',)), []), ('comprehension', ('Name', (1, 22), 'm', ('Store',)), ('Name', (1, 27), 'p', ('Load',)), [('Name', (1, 32), 'g', ('Load',))])]))]),
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('Module', [('Expr', (1, 0), ('DictComp', (1, 1), ('Name', (1, 1), 'a', ('Load',)), ('Name', (1, 5), 'b', ('Load',)), [('comprehension', ('Tuple', (1, 11), [('Name', (1, 11), 'v', ('Store',)), ('Name', (1, 13), 'w', ('Store',))], ('Store',)), ('Name', (1, 18), 'x', ('Load',)), [])]))]),
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('Module', [('Expr', (1, 0), ('SetComp', (1, 1), ('Name', (1, 1), 'r', ('Load',)), [('comprehension', ('Name', (1, 7), 'l', ('Store',)), ('Name', (1, 12), 'x', ('Load',)), [('Name', (1, 17), 'g', ('Load',))])]))]),
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('Module', [('Expr', (1, 0), ('SetComp', (1, 1), ('Name', (1, 1), 'r', ('Load',)), [('comprehension', ('Tuple', (1, 7), [('Name', (1, 7), 'l', ('Store',)), ('Name', (1, 9), 'm', ('Store',))], ('Store',)), ('Name', (1, 14), 'x', ('Load',)), [])]))]),
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]
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single_results = [
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('Interactive', [('Expr', (1, 0), ('BinOp', (1, 0), ('Num', (1, 0), 1), ('Add',), ('Num', (1, 2), 2)))]),
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]
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eval_results = [
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('Expression', ('Name', (1, 0), 'None', ('Load',))),
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('Expression', ('BoolOp', (1, 0), ('And',), [('Name', (1, 0), 'a', ('Load',)), ('Name', (1, 6), 'b', ('Load',))])),
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('Expression', ('BinOp', (1, 0), ('Name', (1, 0), 'a', ('Load',)), ('Add',), ('Name', (1, 4), 'b', ('Load',)))),
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('Expression', ('UnaryOp', (1, 0), ('Not',), ('Name', (1, 4), 'v', ('Load',)))),
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('Expression', ('Lambda', (1, 0), ('arguments', [], None, None, [], None, None, [], []), ('Name', (1, 7), 'None', ('Load',)))),
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('Expression', ('Dict', (1, 0), [('Num', (1, 2), 1)], [('Num', (1, 4), 2)])),
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('Expression', ('Dict', (1, 0), [], [])),
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('Expression', ('Set', (1, 0), [('Name', (1, 1), 'None', ('Load',))])),
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('Expression', ('Dict', (1, 0), [('Num', (2, 6), 1)], [('Num', (4, 10), 2)])),
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('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',))])])),
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('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',))])])),
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('Expression', ('Compare', (1, 0), ('Num', (1, 0), 1), [('Lt',), ('Lt',)], [('Num', (1, 4), 2), ('Num', (1, 8), 3)])),
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('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',)))),
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('Expression', ('Num', (1, 0), 10)),
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('Expression', ('Str', (1, 0), 'string')),
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('Expression', ('Attribute', (1, 0), ('Name', (1, 0), 'a', ('Load',)), 'b', ('Load',))),
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('Expression', ('Subscript', (1, 0), ('Name', (1, 0), 'a', ('Load',)), ('Slice', ('Name', (1, 2), 'b', ('Load',)), ('Name', (1, 4), 'c', ('Load',)), None), ('Load',))),
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('Expression', ('Name', (1, 0), 'v', ('Load',))),
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('Expression', ('List', (1, 0), [('Num', (1, 1), 1), ('Num', (1, 3), 2), ('Num', (1, 5), 3)], ('Load',))),
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('Expression', ('List', (1, 0), [], ('Load',))),
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('Expression', ('Tuple', (1, 0), [('Num', (1, 0), 1), ('Num', (1, 2), 2), ('Num', (1, 4), 3)], ('Load',))),
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('Expression', ('Tuple', (1, 1), [('Num', (1, 1), 1), ('Num', (1, 3), 2), ('Num', (1, 5), 3)], ('Load',))),
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('Expression', ('Tuple', (1, 0), [], ('Load',))),
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('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)),
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]
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main()
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