Serhiy Storchaka | a79f4c2 | 2017-04-19 21:09:21 +0300 | [diff] [blame] | 1 | import copy |
Fred Drake | 79ca79d | 2000-08-21 22:30:53 +0000 | [diff] [blame] | 2 | import parser |
Serhiy Storchaka | a79f4c2 | 2017-04-19 21:09:21 +0300 | [diff] [blame] | 3 | import pickle |
Fred Drake | 58422e5 | 2001-06-04 03:56:24 +0000 | [diff] [blame] | 4 | import unittest |
Mark Dickinson | 211c625 | 2009-02-01 10:28:51 +0000 | [diff] [blame] | 5 | import operator |
Jesus Cea | e9c5318 | 2012-08-03 14:28:37 +0200 | [diff] [blame] | 6 | import struct |
Benjamin Peterson | ee8712c | 2008-05-20 21:35:26 +0000 | [diff] [blame] | 7 | from test import support |
Berker Peksag | ce64391 | 2015-05-06 06:33:17 +0300 | [diff] [blame] | 8 | from test.support.script_helper import assert_python_failure |
Fred Drake | 79ca79d | 2000-08-21 22:30:53 +0000 | [diff] [blame] | 9 | |
| 10 | # |
| 11 | # First, we test that we can generate trees from valid source fragments, |
| 12 | # and that these valid trees are indeed allowed by the tree-loading side |
| 13 | # of the parser module. |
| 14 | # |
| 15 | |
Fred Drake | 58422e5 | 2001-06-04 03:56:24 +0000 | [diff] [blame] | 16 | class RoundtripLegalSyntaxTestCase(unittest.TestCase): |
Guido van Rossum | 32c2ae7 | 2002-08-22 19:45:32 +0000 | [diff] [blame] | 17 | |
Fred Drake | 58422e5 | 2001-06-04 03:56:24 +0000 | [diff] [blame] | 18 | def roundtrip(self, f, s): |
| 19 | st1 = f(s) |
| 20 | t = st1.totuple() |
| 21 | try: |
Fred Drake | 6e4f2c0 | 2001-07-17 19:33:25 +0000 | [diff] [blame] | 22 | st2 = parser.sequence2st(t) |
Guido van Rossum | b940e11 | 2007-01-10 16:19:56 +0000 | [diff] [blame] | 23 | except parser.ParserError as why: |
Anthony Baxter | c2a5a63 | 2004-08-02 06:10:11 +0000 | [diff] [blame] | 24 | self.fail("could not roundtrip %r: %s" % (s, why)) |
Fred Drake | 79ca79d | 2000-08-21 22:30:53 +0000 | [diff] [blame] | 25 | |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 26 | self.assertEqual(t, st2.totuple(), |
| 27 | "could not re-generate syntax tree") |
Fred Drake | 28f739a | 2000-08-25 22:42:40 +0000 | [diff] [blame] | 28 | |
Fred Drake | 58422e5 | 2001-06-04 03:56:24 +0000 | [diff] [blame] | 29 | def check_expr(self, s): |
| 30 | self.roundtrip(parser.expr, s) |
Fred Drake | 28f739a | 2000-08-25 22:42:40 +0000 | [diff] [blame] | 31 | |
Benjamin Peterson | f216c94 | 2008-10-31 02:28:05 +0000 | [diff] [blame] | 32 | def test_flags_passed(self): |
Mike | 53f7a7c | 2017-12-14 14:04:53 +0300 | [diff] [blame] | 33 | # The unicode literals flags has to be passed from the parser to AST |
Benjamin Peterson | f216c94 | 2008-10-31 02:28:05 +0000 | [diff] [blame] | 34 | # generation. |
| 35 | suite = parser.suite("from __future__ import unicode_literals; x = ''") |
| 36 | code = suite.compile() |
| 37 | scope = {} |
| 38 | exec(code, {}, scope) |
Ezio Melotti | e961593 | 2010-01-24 19:26:24 +0000 | [diff] [blame] | 39 | self.assertIsInstance(scope["x"], str) |
Benjamin Peterson | f216c94 | 2008-10-31 02:28:05 +0000 | [diff] [blame] | 40 | |
Fred Drake | 58422e5 | 2001-06-04 03:56:24 +0000 | [diff] [blame] | 41 | def check_suite(self, s): |
| 42 | self.roundtrip(parser.suite, s) |
Fred Drake | 28f739a | 2000-08-25 22:42:40 +0000 | [diff] [blame] | 43 | |
Fred Drake | cf580c7 | 2001-07-17 03:01:29 +0000 | [diff] [blame] | 44 | def test_yield_statement(self): |
Tim Peters | 496563a | 2002-04-01 00:28:59 +0000 | [diff] [blame] | 45 | self.check_suite("def f(): yield 1") |
Phillip J. Eby | 0d6615f | 2005-08-02 00:46:46 +0000 | [diff] [blame] | 46 | self.check_suite("def f(): yield") |
| 47 | self.check_suite("def f(): x += yield") |
| 48 | self.check_suite("def f(): x = yield 1") |
| 49 | self.check_suite("def f(): x = y = yield 1") |
| 50 | self.check_suite("def f(): x = yield") |
| 51 | self.check_suite("def f(): x = y = yield") |
| 52 | self.check_suite("def f(): 1 + (yield)*2") |
| 53 | self.check_suite("def f(): (yield 1)*2") |
Tim Peters | 496563a | 2002-04-01 00:28:59 +0000 | [diff] [blame] | 54 | self.check_suite("def f(): return; yield 1") |
| 55 | self.check_suite("def f(): yield 1; return") |
Nick Coghlan | 1f7ce62 | 2012-01-13 21:43:40 +1000 | [diff] [blame] | 56 | self.check_suite("def f(): yield from 1") |
| 57 | self.check_suite("def f(): x = yield from 1") |
| 58 | self.check_suite("def f(): f((yield from 1))") |
| 59 | self.check_suite("def f(): yield 1; return 1") |
Tim Peters | 496563a | 2002-04-01 00:28:59 +0000 | [diff] [blame] | 60 | self.check_suite("def f():\n" |
Fred Drake | cf580c7 | 2001-07-17 03:01:29 +0000 | [diff] [blame] | 61 | " for x in range(30):\n" |
| 62 | " yield x\n") |
Phillip J. Eby | 0d6615f | 2005-08-02 00:46:46 +0000 | [diff] [blame] | 63 | self.check_suite("def f():\n" |
| 64 | " if (yield):\n" |
| 65 | " yield x\n") |
Fred Drake | cf580c7 | 2001-07-17 03:01:29 +0000 | [diff] [blame] | 66 | |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 67 | def test_await_statement(self): |
| 68 | self.check_suite("async def f():\n await smth()") |
| 69 | self.check_suite("async def f():\n foo = await smth()") |
| 70 | self.check_suite("async def f():\n foo, bar = await smth()") |
| 71 | self.check_suite("async def f():\n (await smth())") |
| 72 | self.check_suite("async def f():\n foo((await smth()))") |
| 73 | self.check_suite("async def f():\n await foo(); return 42") |
| 74 | |
| 75 | def test_async_with_statement(self): |
| 76 | self.check_suite("async def f():\n async with 1: pass") |
| 77 | self.check_suite("async def f():\n async with a as b, c as d: pass") |
| 78 | |
| 79 | def test_async_for_statement(self): |
| 80 | self.check_suite("async def f():\n async for i in (): pass") |
| 81 | self.check_suite("async def f():\n async for i, b in (): pass") |
| 82 | |
Mark Dickinson | 407b3bd | 2012-04-29 22:18:31 +0100 | [diff] [blame] | 83 | def test_nonlocal_statement(self): |
| 84 | self.check_suite("def f():\n" |
| 85 | " x = 0\n" |
| 86 | " def g():\n" |
| 87 | " nonlocal x\n") |
| 88 | self.check_suite("def f():\n" |
| 89 | " x = y = 0\n" |
| 90 | " def g():\n" |
| 91 | " nonlocal x, y\n") |
| 92 | |
Fred Drake | 58422e5 | 2001-06-04 03:56:24 +0000 | [diff] [blame] | 93 | def test_expressions(self): |
| 94 | self.check_expr("foo(1)") |
| 95 | self.check_expr("[1, 2, 3]") |
| 96 | self.check_expr("[x**3 for x in range(20)]") |
| 97 | self.check_expr("[x**3 for x in range(20) if x % 3]") |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 98 | self.check_expr("[x**3 for x in range(20) if x % 2 if x % 3]") |
| 99 | self.check_expr("list(x**3 for x in range(20))") |
| 100 | self.check_expr("list(x**3 for x in range(20) if x % 3)") |
| 101 | self.check_expr("list(x**3 for x in range(20) if x % 2 if x % 3)") |
Fred Drake | 58422e5 | 2001-06-04 03:56:24 +0000 | [diff] [blame] | 102 | self.check_expr("foo(*args)") |
| 103 | self.check_expr("foo(*args, **kw)") |
| 104 | self.check_expr("foo(**kw)") |
| 105 | self.check_expr("foo(key=value)") |
| 106 | self.check_expr("foo(key=value, *args)") |
| 107 | self.check_expr("foo(key=value, *args, **kw)") |
| 108 | self.check_expr("foo(key=value, **kw)") |
| 109 | self.check_expr("foo(a, b, c, *args)") |
| 110 | self.check_expr("foo(a, b, c, *args, **kw)") |
| 111 | self.check_expr("foo(a, b, c, **kw)") |
Benjamin Peterson | 3938a90 | 2008-08-20 02:33:00 +0000 | [diff] [blame] | 112 | self.check_expr("foo(a, *args, keyword=23)") |
Fred Drake | 58422e5 | 2001-06-04 03:56:24 +0000 | [diff] [blame] | 113 | self.check_expr("foo + bar") |
Michael W. Hudson | 5e83b7a | 2003-01-29 14:20:23 +0000 | [diff] [blame] | 114 | self.check_expr("foo - bar") |
| 115 | self.check_expr("foo * bar") |
| 116 | self.check_expr("foo / bar") |
| 117 | self.check_expr("foo // bar") |
Fred Drake | 58422e5 | 2001-06-04 03:56:24 +0000 | [diff] [blame] | 118 | self.check_expr("lambda: 0") |
| 119 | self.check_expr("lambda x: 0") |
| 120 | self.check_expr("lambda *y: 0") |
| 121 | self.check_expr("lambda *y, **z: 0") |
| 122 | self.check_expr("lambda **z: 0") |
| 123 | self.check_expr("lambda x, y: 0") |
| 124 | self.check_expr("lambda foo=bar: 0") |
| 125 | self.check_expr("lambda foo=bar, spaz=nifty+spit: 0") |
| 126 | self.check_expr("lambda foo=bar, **z: 0") |
| 127 | self.check_expr("lambda foo=bar, blaz=blat+2, **z: 0") |
| 128 | self.check_expr("lambda foo=bar, blaz=blat+2, *y, **z: 0") |
| 129 | self.check_expr("lambda x, *y, **z: 0") |
Raymond Hettinger | 354433a | 2004-05-19 08:20:33 +0000 | [diff] [blame] | 130 | self.check_expr("(x for x in range(10))") |
| 131 | self.check_expr("foo(x for x in range(10))") |
Mark Dickinson | da029fb | 2012-05-07 17:24:04 +0100 | [diff] [blame] | 132 | self.check_expr("...") |
| 133 | self.check_expr("a[...]") |
Fred Drake | 79ca79d | 2000-08-21 22:30:53 +0000 | [diff] [blame] | 134 | |
Fred Drake | 58422e5 | 2001-06-04 03:56:24 +0000 | [diff] [blame] | 135 | def test_simple_expression(self): |
| 136 | # expr_stmt |
| 137 | self.check_suite("a") |
Fred Drake | 79ca79d | 2000-08-21 22:30:53 +0000 | [diff] [blame] | 138 | |
Fred Drake | 58422e5 | 2001-06-04 03:56:24 +0000 | [diff] [blame] | 139 | def test_simple_assignments(self): |
| 140 | self.check_suite("a = b") |
| 141 | self.check_suite("a = b = c = d = e") |
Fred Drake | 28f739a | 2000-08-25 22:42:40 +0000 | [diff] [blame] | 142 | |
Yury Selivanov | f8cb8a1 | 2016-09-08 20:50:03 -0700 | [diff] [blame] | 143 | def test_var_annot(self): |
| 144 | self.check_suite("x: int = 5") |
| 145 | self.check_suite("y: List[T] = []; z: [list] = fun()") |
| 146 | self.check_suite("x: tuple = (1, 2)") |
| 147 | self.check_suite("d[f()]: int = 42") |
| 148 | self.check_suite("f(d[x]): str = 'abc'") |
| 149 | self.check_suite("x.y.z.w: complex = 42j") |
| 150 | self.check_suite("x: int") |
| 151 | self.check_suite("def f():\n" |
| 152 | " x: str\n" |
| 153 | " y: int = 5\n") |
| 154 | self.check_suite("class C:\n" |
| 155 | " x: str\n" |
| 156 | " y: int = 5\n") |
| 157 | self.check_suite("class C:\n" |
| 158 | " def __init__(self, x: int) -> None:\n" |
| 159 | " self.x: int = x\n") |
| 160 | # double check for nonsense |
| 161 | with self.assertRaises(SyntaxError): |
| 162 | exec("2+2: int", {}, {}) |
| 163 | with self.assertRaises(SyntaxError): |
| 164 | exec("[]: int = 5", {}, {}) |
| 165 | with self.assertRaises(SyntaxError): |
| 166 | exec("x, *y, z: int = range(5)", {}, {}) |
| 167 | with self.assertRaises(SyntaxError): |
| 168 | exec("t: tuple = 1, 2", {}, {}) |
| 169 | with self.assertRaises(SyntaxError): |
| 170 | exec("u = v: int", {}, {}) |
| 171 | with self.assertRaises(SyntaxError): |
| 172 | exec("False: int", {}, {}) |
| 173 | with self.assertRaises(SyntaxError): |
| 174 | exec("x.False: int", {}, {}) |
| 175 | with self.assertRaises(SyntaxError): |
| 176 | exec("x.y,: int", {}, {}) |
| 177 | with self.assertRaises(SyntaxError): |
| 178 | exec("[0]: int", {}, {}) |
| 179 | with self.assertRaises(SyntaxError): |
| 180 | exec("f(): int", {}, {}) |
| 181 | |
Fred Drake | 58422e5 | 2001-06-04 03:56:24 +0000 | [diff] [blame] | 182 | def test_simple_augmented_assignments(self): |
| 183 | self.check_suite("a += b") |
| 184 | self.check_suite("a -= b") |
| 185 | self.check_suite("a *= b") |
| 186 | self.check_suite("a /= b") |
Michael W. Hudson | 5e83b7a | 2003-01-29 14:20:23 +0000 | [diff] [blame] | 187 | self.check_suite("a //= b") |
Fred Drake | 58422e5 | 2001-06-04 03:56:24 +0000 | [diff] [blame] | 188 | self.check_suite("a %= b") |
| 189 | self.check_suite("a &= b") |
| 190 | self.check_suite("a |= b") |
| 191 | self.check_suite("a ^= b") |
| 192 | self.check_suite("a <<= b") |
| 193 | self.check_suite("a >>= b") |
| 194 | self.check_suite("a **= b") |
Fred Drake | e3fb18c | 2001-01-07 06:02:19 +0000 | [diff] [blame] | 195 | |
Fred Drake | 58422e5 | 2001-06-04 03:56:24 +0000 | [diff] [blame] | 196 | def test_function_defs(self): |
| 197 | self.check_suite("def f(): pass") |
| 198 | self.check_suite("def f(*args): pass") |
| 199 | self.check_suite("def f(*args, **kw): pass") |
| 200 | self.check_suite("def f(**kw): pass") |
| 201 | self.check_suite("def f(foo=bar): pass") |
| 202 | self.check_suite("def f(foo=bar, *args): pass") |
| 203 | self.check_suite("def f(foo=bar, *args, **kw): pass") |
| 204 | self.check_suite("def f(foo=bar, **kw): pass") |
Fred Drake | e3fb18c | 2001-01-07 06:02:19 +0000 | [diff] [blame] | 205 | |
Fred Drake | 58422e5 | 2001-06-04 03:56:24 +0000 | [diff] [blame] | 206 | self.check_suite("def f(a, b): pass") |
| 207 | self.check_suite("def f(a, b, *args): pass") |
| 208 | self.check_suite("def f(a, b, *args, **kw): pass") |
| 209 | self.check_suite("def f(a, b, **kw): pass") |
| 210 | self.check_suite("def f(a, b, foo=bar): pass") |
| 211 | self.check_suite("def f(a, b, foo=bar, *args): pass") |
| 212 | self.check_suite("def f(a, b, foo=bar, *args, **kw): pass") |
| 213 | self.check_suite("def f(a, b, foo=bar, **kw): pass") |
Fred Drake | e3fb18c | 2001-01-07 06:02:19 +0000 | [diff] [blame] | 214 | |
Anthony Baxter | c2a5a63 | 2004-08-02 06:10:11 +0000 | [diff] [blame] | 215 | self.check_suite("@staticmethod\n" |
| 216 | "def f(): pass") |
| 217 | self.check_suite("@staticmethod\n" |
| 218 | "@funcattrs(x, y)\n" |
| 219 | "def f(): pass") |
| 220 | self.check_suite("@funcattrs()\n" |
| 221 | "def f(): pass") |
| 222 | |
Mark Dickinson | ea7e9f9 | 2012-04-29 18:34:40 +0100 | [diff] [blame] | 223 | # keyword-only arguments |
| 224 | self.check_suite("def f(*, a): pass") |
| 225 | self.check_suite("def f(*, a = 5): pass") |
| 226 | self.check_suite("def f(*, a = 5, b): pass") |
| 227 | self.check_suite("def f(*, a, b = 5): pass") |
| 228 | self.check_suite("def f(*, a, b = 5, **kwds): pass") |
| 229 | self.check_suite("def f(*args, a): pass") |
| 230 | self.check_suite("def f(*args, a = 5): pass") |
| 231 | self.check_suite("def f(*args, a = 5, b): pass") |
| 232 | self.check_suite("def f(*args, a, b = 5): pass") |
| 233 | self.check_suite("def f(*args, a, b = 5, **kwds): pass") |
| 234 | |
| 235 | # function annotations |
| 236 | self.check_suite("def f(a: int): pass") |
| 237 | self.check_suite("def f(a: int = 5): pass") |
| 238 | self.check_suite("def f(*args: list): pass") |
| 239 | self.check_suite("def f(**kwds: dict): pass") |
| 240 | self.check_suite("def f(*, a: int): pass") |
| 241 | self.check_suite("def f(*, a: int = 5): pass") |
| 242 | self.check_suite("def f() -> int: pass") |
| 243 | |
Brett Cannon | f418991 | 2005-04-09 02:30:16 +0000 | [diff] [blame] | 244 | def test_class_defs(self): |
| 245 | self.check_suite("class foo():pass") |
Guido van Rossum | fc158e2 | 2007-11-15 19:17:28 +0000 | [diff] [blame] | 246 | self.check_suite("class foo(object):pass") |
Mark Dickinson | 2bd61a9 | 2010-07-04 16:37:31 +0000 | [diff] [blame] | 247 | self.check_suite("@class_decorator\n" |
| 248 | "class foo():pass") |
| 249 | self.check_suite("@class_decorator(arg)\n" |
| 250 | "class foo():pass") |
| 251 | self.check_suite("@decorator1\n" |
| 252 | "@decorator2\n" |
| 253 | "class foo():pass") |
Tim Peters | e890682 | 2005-04-20 17:45:13 +0000 | [diff] [blame] | 254 | |
Fred Drake | 58422e5 | 2001-06-04 03:56:24 +0000 | [diff] [blame] | 255 | def test_import_from_statement(self): |
| 256 | self.check_suite("from sys.path import *") |
| 257 | self.check_suite("from sys.path import dirname") |
Anthony Baxter | 1a4ddae | 2004-08-31 10:07:13 +0000 | [diff] [blame] | 258 | self.check_suite("from sys.path import (dirname)") |
| 259 | self.check_suite("from sys.path import (dirname,)") |
Fred Drake | 58422e5 | 2001-06-04 03:56:24 +0000 | [diff] [blame] | 260 | self.check_suite("from sys.path import dirname as my_dirname") |
Anthony Baxter | 1a4ddae | 2004-08-31 10:07:13 +0000 | [diff] [blame] | 261 | self.check_suite("from sys.path import (dirname as my_dirname)") |
| 262 | self.check_suite("from sys.path import (dirname as my_dirname,)") |
Fred Drake | 58422e5 | 2001-06-04 03:56:24 +0000 | [diff] [blame] | 263 | self.check_suite("from sys.path import dirname, basename") |
Anthony Baxter | 1a4ddae | 2004-08-31 10:07:13 +0000 | [diff] [blame] | 264 | self.check_suite("from sys.path import (dirname, basename)") |
| 265 | self.check_suite("from sys.path import (dirname, basename,)") |
Fred Drake | 58422e5 | 2001-06-04 03:56:24 +0000 | [diff] [blame] | 266 | self.check_suite( |
| 267 | "from sys.path import dirname as my_dirname, basename") |
| 268 | self.check_suite( |
Anthony Baxter | 1a4ddae | 2004-08-31 10:07:13 +0000 | [diff] [blame] | 269 | "from sys.path import (dirname as my_dirname, basename)") |
| 270 | self.check_suite( |
| 271 | "from sys.path import (dirname as my_dirname, basename,)") |
| 272 | self.check_suite( |
Fred Drake | 58422e5 | 2001-06-04 03:56:24 +0000 | [diff] [blame] | 273 | "from sys.path import dirname, basename as my_basename") |
Anthony Baxter | 1a4ddae | 2004-08-31 10:07:13 +0000 | [diff] [blame] | 274 | self.check_suite( |
| 275 | "from sys.path import (dirname, basename as my_basename)") |
| 276 | self.check_suite( |
| 277 | "from sys.path import (dirname, basename as my_basename,)") |
Benjamin Peterson | c0747cf | 2008-11-03 20:31:38 +0000 | [diff] [blame] | 278 | self.check_suite("from .bogus import x") |
Fred Drake | e3fb18c | 2001-01-07 06:02:19 +0000 | [diff] [blame] | 279 | |
Fred Drake | 58422e5 | 2001-06-04 03:56:24 +0000 | [diff] [blame] | 280 | def test_basic_import_statement(self): |
| 281 | self.check_suite("import sys") |
| 282 | self.check_suite("import sys as system") |
| 283 | self.check_suite("import sys, math") |
| 284 | self.check_suite("import sys as system, math") |
| 285 | self.check_suite("import sys, math as my_math") |
Fred Drake | 79ca79d | 2000-08-21 22:30:53 +0000 | [diff] [blame] | 286 | |
Mark Dickinson | 2cc8a5e | 2010-07-04 18:11:51 +0000 | [diff] [blame] | 287 | def test_relative_imports(self): |
| 288 | self.check_suite("from . import name") |
| 289 | self.check_suite("from .. import name") |
Mark Dickinson | feb3b75 | 2010-07-04 18:38:57 +0000 | [diff] [blame] | 290 | # check all the way up to '....', since '...' is tokenized |
| 291 | # differently from '.' (it's an ellipsis token). |
| 292 | self.check_suite("from ... import name") |
| 293 | self.check_suite("from .... import name") |
Mark Dickinson | 2cc8a5e | 2010-07-04 18:11:51 +0000 | [diff] [blame] | 294 | self.check_suite("from .pkg import name") |
| 295 | self.check_suite("from ..pkg import name") |
Mark Dickinson | feb3b75 | 2010-07-04 18:38:57 +0000 | [diff] [blame] | 296 | self.check_suite("from ...pkg import name") |
| 297 | self.check_suite("from ....pkg import name") |
Mark Dickinson | 2cc8a5e | 2010-07-04 18:11:51 +0000 | [diff] [blame] | 298 | |
Neal Norwitz | 9caf9c0 | 2003-02-10 01:54:06 +0000 | [diff] [blame] | 299 | def test_pep263(self): |
| 300 | self.check_suite("# -*- coding: iso-8859-1 -*-\n" |
| 301 | "pass\n") |
| 302 | |
| 303 | def test_assert(self): |
| 304 | self.check_suite("assert alo < ahi and blo < bhi\n") |
| 305 | |
Benjamin Peterson | 4469d0c | 2008-11-30 22:46:23 +0000 | [diff] [blame] | 306 | def test_with(self): |
| 307 | self.check_suite("with open('x'): pass\n") |
| 308 | self.check_suite("with open('x') as f: pass\n") |
Georg Brandl | 0c31562 | 2009-05-25 21:10:36 +0000 | [diff] [blame] | 309 | self.check_suite("with open('x') as f, open('y') as g: pass\n") |
Benjamin Peterson | 4469d0c | 2008-11-30 22:46:23 +0000 | [diff] [blame] | 310 | |
Georg Brandl | eee3116 | 2008-12-07 15:15:22 +0000 | [diff] [blame] | 311 | def test_try_stmt(self): |
| 312 | self.check_suite("try: pass\nexcept: pass\n") |
| 313 | self.check_suite("try: pass\nfinally: pass\n") |
| 314 | self.check_suite("try: pass\nexcept A: pass\nfinally: pass\n") |
| 315 | self.check_suite("try: pass\nexcept A: pass\nexcept: pass\n" |
| 316 | "finally: pass\n") |
| 317 | self.check_suite("try: pass\nexcept: pass\nelse: pass\n") |
| 318 | self.check_suite("try: pass\nexcept: pass\nelse: pass\n" |
| 319 | "finally: pass\n") |
| 320 | |
Thomas Wouters | 89f507f | 2006-12-13 04:49:30 +0000 | [diff] [blame] | 321 | def test_position(self): |
| 322 | # An absolutely minimal test of position information. Better |
| 323 | # tests would be a big project. |
Benjamin Peterson | 8f326b2 | 2009-12-13 02:10:36 +0000 | [diff] [blame] | 324 | code = "def f(x):\n return x + 1" |
Thomas Wouters | 89f507f | 2006-12-13 04:49:30 +0000 | [diff] [blame] | 325 | st1 = parser.suite(code) |
| 326 | st2 = st1.totuple(line_info=1, col_info=1) |
| 327 | |
| 328 | def walk(tree): |
| 329 | node_type = tree[0] |
| 330 | next = tree[1] |
| 331 | if isinstance(next, tuple): |
| 332 | for elt in tree[1:]: |
| 333 | for x in walk(elt): |
| 334 | yield x |
| 335 | else: |
| 336 | yield tree |
| 337 | |
| 338 | terminals = list(walk(st2)) |
| 339 | self.assertEqual([ |
| 340 | (1, 'def', 1, 0), |
| 341 | (1, 'f', 1, 4), |
| 342 | (7, '(', 1, 5), |
| 343 | (1, 'x', 1, 6), |
| 344 | (8, ')', 1, 7), |
| 345 | (11, ':', 1, 8), |
| 346 | (4, '', 1, 9), |
| 347 | (5, '', 2, -1), |
| 348 | (1, 'return', 2, 4), |
| 349 | (1, 'x', 2, 11), |
| 350 | (14, '+', 2, 13), |
| 351 | (2, '1', 2, 15), |
| 352 | (4, '', 2, 16), |
Benjamin Peterson | 8f326b2 | 2009-12-13 02:10:36 +0000 | [diff] [blame] | 353 | (6, '', 2, -1), |
| 354 | (4, '', 2, -1), |
| 355 | (0, '', 2, -1)], |
Thomas Wouters | 89f507f | 2006-12-13 04:49:30 +0000 | [diff] [blame] | 356 | terminals) |
| 357 | |
Benjamin Peterson | 4905e80 | 2009-09-27 02:43:28 +0000 | [diff] [blame] | 358 | def test_extended_unpacking(self): |
| 359 | self.check_suite("*a = y") |
| 360 | self.check_suite("x, *b, = m") |
| 361 | self.check_suite("[*a, *b] = y") |
| 362 | self.check_suite("for [*x, b] in x: pass") |
| 363 | |
Mark Dickinson | cf360b9 | 2012-05-07 12:01:27 +0100 | [diff] [blame] | 364 | def test_raise_statement(self): |
| 365 | self.check_suite("raise\n") |
| 366 | self.check_suite("raise e\n") |
| 367 | self.check_suite("try:\n" |
| 368 | " suite\n" |
| 369 | "except Exception as e:\n" |
| 370 | " raise ValueError from e\n") |
| 371 | |
Benjamin Peterson | 025e9eb | 2015-05-05 20:16:41 -0400 | [diff] [blame] | 372 | def test_list_displays(self): |
| 373 | self.check_expr('[]') |
| 374 | self.check_expr('[*{2}, 3, *[4]]') |
| 375 | |
Mark Dickinson | 11c1dee | 2012-05-07 16:34:34 +0100 | [diff] [blame] | 376 | def test_set_displays(self): |
Benjamin Peterson | 025e9eb | 2015-05-05 20:16:41 -0400 | [diff] [blame] | 377 | self.check_expr('{*{2}, 3, *[4]}') |
Mark Dickinson | 11c1dee | 2012-05-07 16:34:34 +0100 | [diff] [blame] | 378 | self.check_expr('{2}') |
| 379 | self.check_expr('{2,}') |
| 380 | self.check_expr('{2, 3}') |
| 381 | self.check_expr('{2, 3,}') |
| 382 | |
| 383 | def test_dict_displays(self): |
| 384 | self.check_expr('{}') |
| 385 | self.check_expr('{a:b}') |
| 386 | self.check_expr('{a:b,}') |
| 387 | self.check_expr('{a:b, c:d}') |
| 388 | self.check_expr('{a:b, c:d,}') |
Benjamin Peterson | 025e9eb | 2015-05-05 20:16:41 -0400 | [diff] [blame] | 389 | self.check_expr('{**{}}') |
| 390 | self.check_expr('{**{}, 3:4, **{5:6, 7:8}}') |
| 391 | |
| 392 | def test_argument_unpacking(self): |
Yury Selivanov | 50a2614 | 2015-08-05 17:59:45 -0400 | [diff] [blame] | 393 | self.check_expr("f(*a, **b)") |
Benjamin Peterson | 025e9eb | 2015-05-05 20:16:41 -0400 | [diff] [blame] | 394 | self.check_expr('f(a, *b, *c, *d)') |
| 395 | self.check_expr('f(**a, **b)') |
| 396 | self.check_expr('f(2, *a, *b, **b, **c, **d)') |
Yury Selivanov | 50a2614 | 2015-08-05 17:59:45 -0400 | [diff] [blame] | 397 | self.check_expr("f(*b, *() or () and (), **{} and {}, **() or {})") |
Mark Dickinson | 11c1dee | 2012-05-07 16:34:34 +0100 | [diff] [blame] | 398 | |
| 399 | def test_set_comprehensions(self): |
| 400 | self.check_expr('{x for x in seq}') |
| 401 | self.check_expr('{f(x) for x in seq}') |
| 402 | self.check_expr('{f(x) for x in seq if condition(x)}') |
| 403 | |
| 404 | def test_dict_comprehensions(self): |
| 405 | self.check_expr('{x:x for x in seq}') |
| 406 | self.check_expr('{x**2:x[3] for x in seq if condition(x)}') |
| 407 | self.check_expr('{x:x for x in seq1 for y in seq2 if condition(x, y)}') |
| 408 | |
Thomas Wouters | 89f507f | 2006-12-13 04:49:30 +0000 | [diff] [blame] | 409 | |
Fred Drake | 79ca79d | 2000-08-21 22:30:53 +0000 | [diff] [blame] | 410 | # |
| 411 | # Second, we take *invalid* trees and make sure we get ParserError |
| 412 | # rejections for them. |
| 413 | # |
| 414 | |
Fred Drake | 58422e5 | 2001-06-04 03:56:24 +0000 | [diff] [blame] | 415 | class IllegalSyntaxTestCase(unittest.TestCase): |
Guido van Rossum | 32c2ae7 | 2002-08-22 19:45:32 +0000 | [diff] [blame] | 416 | |
Fred Drake | 58422e5 | 2001-06-04 03:56:24 +0000 | [diff] [blame] | 417 | def check_bad_tree(self, tree, label): |
| 418 | try: |
Fred Drake | 6e4f2c0 | 2001-07-17 19:33:25 +0000 | [diff] [blame] | 419 | parser.sequence2st(tree) |
Fred Drake | 58422e5 | 2001-06-04 03:56:24 +0000 | [diff] [blame] | 420 | except parser.ParserError: |
| 421 | pass |
| 422 | else: |
| 423 | self.fail("did not detect invalid tree for %r" % label) |
Fred Drake | 79ca79d | 2000-08-21 22:30:53 +0000 | [diff] [blame] | 424 | |
Fred Drake | 58422e5 | 2001-06-04 03:56:24 +0000 | [diff] [blame] | 425 | def test_junk(self): |
| 426 | # not even remotely valid: |
| 427 | self.check_bad_tree((1, 2, 3), "<junk>") |
| 428 | |
Serhiy Storchaka | a79f4c2 | 2017-04-19 21:09:21 +0300 | [diff] [blame] | 429 | def test_illegal_terminal(self): |
| 430 | tree = \ |
| 431 | (257, |
| 432 | (269, |
| 433 | (270, |
| 434 | (271, |
| 435 | (277, |
| 436 | (1,))), |
| 437 | (4, ''))), |
| 438 | (4, ''), |
| 439 | (0, '')) |
| 440 | self.check_bad_tree(tree, "too small items in terminal node") |
| 441 | tree = \ |
| 442 | (257, |
| 443 | (269, |
| 444 | (270, |
| 445 | (271, |
| 446 | (277, |
| 447 | (1, b'pass'))), |
| 448 | (4, ''))), |
| 449 | (4, ''), |
| 450 | (0, '')) |
| 451 | self.check_bad_tree(tree, "non-string second item in terminal node") |
| 452 | tree = \ |
| 453 | (257, |
| 454 | (269, |
| 455 | (270, |
| 456 | (271, |
| 457 | (277, |
| 458 | (1, 'pass', '0', 0))), |
| 459 | (4, ''))), |
| 460 | (4, ''), |
| 461 | (0, '')) |
| 462 | self.check_bad_tree(tree, "non-integer third item in terminal node") |
| 463 | tree = \ |
| 464 | (257, |
| 465 | (269, |
| 466 | (270, |
| 467 | (271, |
| 468 | (277, |
| 469 | (1, 'pass', 0, 0))), |
| 470 | (4, ''))), |
| 471 | (4, ''), |
| 472 | (0, '')) |
| 473 | self.check_bad_tree(tree, "too many items in terminal node") |
| 474 | |
Fred Drake | cf580c7 | 2001-07-17 03:01:29 +0000 | [diff] [blame] | 475 | def test_illegal_yield_1(self): |
Guido van Rossum | 32c2ae7 | 2002-08-22 19:45:32 +0000 | [diff] [blame] | 476 | # Illegal yield statement: def f(): return 1; yield 1 |
Fred Drake | cf580c7 | 2001-07-17 03:01:29 +0000 | [diff] [blame] | 477 | tree = \ |
| 478 | (257, |
| 479 | (264, |
| 480 | (285, |
| 481 | (259, |
| 482 | (1, 'def'), |
| 483 | (1, 'f'), |
| 484 | (260, (7, '('), (8, ')')), |
| 485 | (11, ':'), |
| 486 | (291, |
| 487 | (4, ''), |
| 488 | (5, ''), |
| 489 | (264, |
| 490 | (265, |
| 491 | (266, |
| 492 | (272, |
| 493 | (275, |
| 494 | (1, 'return'), |
| 495 | (313, |
| 496 | (292, |
| 497 | (293, |
| 498 | (294, |
| 499 | (295, |
| 500 | (297, |
| 501 | (298, |
| 502 | (299, |
| 503 | (300, |
| 504 | (301, |
| 505 | (302, (303, (304, (305, (2, '1')))))))))))))))))), |
| 506 | (264, |
| 507 | (265, |
| 508 | (266, |
| 509 | (272, |
| 510 | (276, |
| 511 | (1, 'yield'), |
| 512 | (313, |
| 513 | (292, |
| 514 | (293, |
| 515 | (294, |
| 516 | (295, |
| 517 | (297, |
| 518 | (298, |
| 519 | (299, |
| 520 | (300, |
| 521 | (301, |
| 522 | (302, |
| 523 | (303, (304, (305, (2, '1')))))))))))))))))), |
| 524 | (4, ''))), |
| 525 | (6, ''))))), |
| 526 | (4, ''), |
| 527 | (0, '')))) |
| 528 | self.check_bad_tree(tree, "def f():\n return 1\n yield 1") |
| 529 | |
| 530 | def test_illegal_yield_2(self): |
Guido van Rossum | 32c2ae7 | 2002-08-22 19:45:32 +0000 | [diff] [blame] | 531 | # Illegal return in generator: def f(): return 1; yield 1 |
Fred Drake | cf580c7 | 2001-07-17 03:01:29 +0000 | [diff] [blame] | 532 | tree = \ |
| 533 | (257, |
| 534 | (264, |
| 535 | (265, |
| 536 | (266, |
| 537 | (278, |
| 538 | (1, 'from'), |
| 539 | (281, (1, '__future__')), |
| 540 | (1, 'import'), |
| 541 | (279, (1, 'generators')))), |
| 542 | (4, ''))), |
| 543 | (264, |
| 544 | (285, |
| 545 | (259, |
| 546 | (1, 'def'), |
| 547 | (1, 'f'), |
| 548 | (260, (7, '('), (8, ')')), |
| 549 | (11, ':'), |
| 550 | (291, |
| 551 | (4, ''), |
| 552 | (5, ''), |
| 553 | (264, |
| 554 | (265, |
| 555 | (266, |
| 556 | (272, |
| 557 | (275, |
| 558 | (1, 'return'), |
| 559 | (313, |
| 560 | (292, |
| 561 | (293, |
| 562 | (294, |
| 563 | (295, |
| 564 | (297, |
| 565 | (298, |
| 566 | (299, |
| 567 | (300, |
| 568 | (301, |
| 569 | (302, (303, (304, (305, (2, '1')))))))))))))))))), |
| 570 | (264, |
| 571 | (265, |
| 572 | (266, |
| 573 | (272, |
| 574 | (276, |
| 575 | (1, 'yield'), |
| 576 | (313, |
| 577 | (292, |
| 578 | (293, |
| 579 | (294, |
| 580 | (295, |
| 581 | (297, |
| 582 | (298, |
| 583 | (299, |
| 584 | (300, |
| 585 | (301, |
| 586 | (302, |
| 587 | (303, (304, (305, (2, '1')))))))))))))))))), |
| 588 | (4, ''))), |
| 589 | (6, ''))))), |
| 590 | (4, ''), |
| 591 | (0, '')))) |
| 592 | self.check_bad_tree(tree, "def f():\n return 1\n yield 1") |
| 593 | |
Fred Drake | 58422e5 | 2001-06-04 03:56:24 +0000 | [diff] [blame] | 594 | def test_a_comma_comma_c(self): |
Guido van Rossum | 32c2ae7 | 2002-08-22 19:45:32 +0000 | [diff] [blame] | 595 | # Illegal input: a,,c |
Fred Drake | 58422e5 | 2001-06-04 03:56:24 +0000 | [diff] [blame] | 596 | tree = \ |
| 597 | (258, |
| 598 | (311, |
| 599 | (290, |
| 600 | (291, |
| 601 | (292, |
| 602 | (293, |
| 603 | (295, |
| 604 | (296, |
| 605 | (297, |
| 606 | (298, (299, (300, (301, (302, (303, (1, 'a')))))))))))))), |
| 607 | (12, ','), |
| 608 | (12, ','), |
| 609 | (290, |
| 610 | (291, |
| 611 | (292, |
| 612 | (293, |
| 613 | (295, |
| 614 | (296, |
| 615 | (297, |
| 616 | (298, (299, (300, (301, (302, (303, (1, 'c'))))))))))))))), |
| 617 | (4, ''), |
| 618 | (0, '')) |
| 619 | self.check_bad_tree(tree, "a,,c") |
| 620 | |
| 621 | def test_illegal_operator(self): |
Guido van Rossum | 32c2ae7 | 2002-08-22 19:45:32 +0000 | [diff] [blame] | 622 | # Illegal input: a $= b |
Fred Drake | 58422e5 | 2001-06-04 03:56:24 +0000 | [diff] [blame] | 623 | tree = \ |
| 624 | (257, |
| 625 | (264, |
| 626 | (265, |
| 627 | (266, |
| 628 | (267, |
| 629 | (312, |
| 630 | (291, |
| 631 | (292, |
| 632 | (293, |
| 633 | (294, |
| 634 | (296, |
| 635 | (297, |
| 636 | (298, |
| 637 | (299, |
| 638 | (300, (301, (302, (303, (304, (1, 'a'))))))))))))))), |
| 639 | (268, (37, '$=')), |
| 640 | (312, |
| 641 | (291, |
| 642 | (292, |
| 643 | (293, |
| 644 | (294, |
| 645 | (296, |
| 646 | (297, |
| 647 | (298, |
| 648 | (299, |
| 649 | (300, (301, (302, (303, (304, (1, 'b'))))))))))))))))), |
| 650 | (4, ''))), |
| 651 | (0, '')) |
| 652 | self.check_bad_tree(tree, "a $= b") |
Fred Drake | 79ca79d | 2000-08-21 22:30:53 +0000 | [diff] [blame] | 653 | |
Neal Norwitz | 9caf9c0 | 2003-02-10 01:54:06 +0000 | [diff] [blame] | 654 | def test_malformed_global(self): |
| 655 | #doesn't have global keyword in ast |
| 656 | tree = (257, |
| 657 | (264, |
| 658 | (265, |
| 659 | (266, |
| 660 | (282, (1, 'foo'))), (4, ''))), |
| 661 | (4, ''), |
Tim Peters | f2715e0 | 2003-02-19 02:35:07 +0000 | [diff] [blame] | 662 | (0, '')) |
Neal Norwitz | 9caf9c0 | 2003-02-10 01:54:06 +0000 | [diff] [blame] | 663 | self.check_bad_tree(tree, "malformed global ast") |
Fred Drake | 79ca79d | 2000-08-21 22:30:53 +0000 | [diff] [blame] | 664 | |
Mark Dickinson | 2cc8a5e | 2010-07-04 18:11:51 +0000 | [diff] [blame] | 665 | def test_missing_import_source(self): |
Mark Dickinson | 3445b48 | 2010-07-04 18:15:26 +0000 | [diff] [blame] | 666 | # from import fred |
Mark Dickinson | 2cc8a5e | 2010-07-04 18:11:51 +0000 | [diff] [blame] | 667 | tree = \ |
| 668 | (257, |
Mark Dickinson | 3445b48 | 2010-07-04 18:15:26 +0000 | [diff] [blame] | 669 | (268, |
| 670 | (269, |
| 671 | (270, |
| 672 | (282, |
| 673 | (284, (1, 'from'), (1, 'import'), |
| 674 | (287, (285, (1, 'fred')))))), |
Mark Dickinson | 2cc8a5e | 2010-07-04 18:11:51 +0000 | [diff] [blame] | 675 | (4, ''))), |
| 676 | (4, ''), (0, '')) |
Mark Dickinson | 3445b48 | 2010-07-04 18:15:26 +0000 | [diff] [blame] | 677 | self.check_bad_tree(tree, "from import fred") |
Mark Dickinson | 2cc8a5e | 2010-07-04 18:11:51 +0000 | [diff] [blame] | 678 | |
Serhiy Storchaka | a79f4c2 | 2017-04-19 21:09:21 +0300 | [diff] [blame] | 679 | def test_illegal_encoding(self): |
| 680 | # Illegal encoding declaration |
| 681 | tree = \ |
Jelle Zijlstra | ac31770 | 2017-10-05 20:24:46 -0700 | [diff] [blame] | 682 | (340, |
Serhiy Storchaka | a79f4c2 | 2017-04-19 21:09:21 +0300 | [diff] [blame] | 683 | (257, (0, ''))) |
| 684 | self.check_bad_tree(tree, "missed encoding") |
| 685 | tree = \ |
Jelle Zijlstra | ac31770 | 2017-10-05 20:24:46 -0700 | [diff] [blame] | 686 | (340, |
Serhiy Storchaka | a79f4c2 | 2017-04-19 21:09:21 +0300 | [diff] [blame] | 687 | (257, (0, '')), |
| 688 | b'iso-8859-1') |
| 689 | self.check_bad_tree(tree, "non-string encoding") |
| 690 | tree = \ |
Jelle Zijlstra | ac31770 | 2017-10-05 20:24:46 -0700 | [diff] [blame] | 691 | (340, |
Serhiy Storchaka | a79f4c2 | 2017-04-19 21:09:21 +0300 | [diff] [blame] | 692 | (257, (0, '')), |
| 693 | '\udcff') |
| 694 | with self.assertRaises(UnicodeEncodeError): |
| 695 | parser.sequence2st(tree) |
| 696 | |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 697 | |
| 698 | class CompileTestCase(unittest.TestCase): |
| 699 | |
| 700 | # These tests are very minimal. :-( |
| 701 | |
| 702 | def test_compile_expr(self): |
| 703 | st = parser.expr('2 + 3') |
| 704 | code = parser.compilest(st) |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 705 | self.assertEqual(eval(code), 5) |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 706 | |
| 707 | def test_compile_suite(self): |
| 708 | st = parser.suite('x = 2; y = x + 3') |
| 709 | code = parser.compilest(st) |
| 710 | globs = {} |
Georg Brandl | 7cae87c | 2006-09-06 06:51:57 +0000 | [diff] [blame] | 711 | exec(code, globs) |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 712 | self.assertEqual(globs['y'], 5) |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 713 | |
| 714 | def test_compile_error(self): |
| 715 | st = parser.suite('1 = 3 + 4') |
| 716 | self.assertRaises(SyntaxError, parser.compilest, st) |
| 717 | |
Guido van Rossum | b5a755e | 2007-07-18 18:15:48 +0000 | [diff] [blame] | 718 | def test_compile_badunicode(self): |
Guido van Rossum | 7eb6ca5 | 2007-07-18 21:00:22 +0000 | [diff] [blame] | 719 | st = parser.suite('a = "\\U12345678"') |
Guido van Rossum | b5a755e | 2007-07-18 18:15:48 +0000 | [diff] [blame] | 720 | self.assertRaises(SyntaxError, parser.compilest, st) |
Guido van Rossum | 7eb6ca5 | 2007-07-18 21:00:22 +0000 | [diff] [blame] | 721 | st = parser.suite('a = "\\u1"') |
Guido van Rossum | b5a755e | 2007-07-18 18:15:48 +0000 | [diff] [blame] | 722 | self.assertRaises(SyntaxError, parser.compilest, st) |
| 723 | |
Mark Dickinson | d35a32e | 2010-06-17 12:33:22 +0000 | [diff] [blame] | 724 | def test_issue_9011(self): |
| 725 | # Issue 9011: compilation of an unary minus expression changed |
| 726 | # the meaning of the ST, so that a second compilation produced |
| 727 | # incorrect results. |
| 728 | st = parser.expr('-3') |
| 729 | code1 = parser.compilest(st) |
| 730 | self.assertEqual(eval(code1), -3) |
| 731 | code2 = parser.compilest(st) |
| 732 | self.assertEqual(eval(code2), -3) |
| 733 | |
Serhiy Storchaka | 9305d83 | 2016-06-18 13:53:36 +0300 | [diff] [blame] | 734 | def test_compile_filename(self): |
| 735 | st = parser.expr('a + 5') |
| 736 | code = parser.compilest(st) |
| 737 | self.assertEqual(code.co_filename, '<syntax-tree>') |
| 738 | code = st.compile() |
| 739 | self.assertEqual(code.co_filename, '<syntax-tree>') |
Serhiy Storchaka | febc332 | 2016-08-06 23:29:29 +0300 | [diff] [blame] | 740 | for filename in 'file.py', b'file.py': |
Serhiy Storchaka | 9305d83 | 2016-06-18 13:53:36 +0300 | [diff] [blame] | 741 | code = parser.compilest(st, filename) |
| 742 | self.assertEqual(code.co_filename, 'file.py') |
| 743 | code = st.compile(filename) |
| 744 | self.assertEqual(code.co_filename, 'file.py') |
Serhiy Storchaka | febc332 | 2016-08-06 23:29:29 +0300 | [diff] [blame] | 745 | for filename in bytearray(b'file.py'), memoryview(b'file.py'): |
| 746 | with self.assertWarns(DeprecationWarning): |
| 747 | code = parser.compilest(st, filename) |
| 748 | self.assertEqual(code.co_filename, 'file.py') |
| 749 | with self.assertWarns(DeprecationWarning): |
| 750 | code = st.compile(filename) |
| 751 | self.assertEqual(code.co_filename, 'file.py') |
Serhiy Storchaka | 9305d83 | 2016-06-18 13:53:36 +0300 | [diff] [blame] | 752 | self.assertRaises(TypeError, parser.compilest, st, list(b'file.py')) |
| 753 | self.assertRaises(TypeError, st.compile, list(b'file.py')) |
| 754 | |
| 755 | |
Christian Heimes | 90c3d9b | 2008-02-23 13:18:03 +0000 | [diff] [blame] | 756 | class ParserStackLimitTestCase(unittest.TestCase): |
Mark Dickinson | d35a32e | 2010-06-17 12:33:22 +0000 | [diff] [blame] | 757 | """try to push the parser to/over its limits. |
Christian Heimes | 90c3d9b | 2008-02-23 13:18:03 +0000 | [diff] [blame] | 758 | see http://bugs.python.org/issue1881 for a discussion |
| 759 | """ |
| 760 | def _nested_expression(self, level): |
| 761 | return "["*level+"]"*level |
| 762 | |
| 763 | def test_deeply_nested_list(self): |
| 764 | # XXX used to be 99 levels in 2.x |
| 765 | e = self._nested_expression(93) |
| 766 | st = parser.expr(e) |
| 767 | st.compile() |
| 768 | |
| 769 | def test_trigger_memory_error(self): |
| 770 | e = self._nested_expression(100) |
Ezio Melotti | 3919184 | 2013-03-09 22:17:33 +0200 | [diff] [blame] | 771 | rc, out, err = assert_python_failure('-c', e) |
| 772 | # parsing the expression will result in an error message |
| 773 | # followed by a MemoryError (see #11963) |
Ezio Melotti | e7c3299 | 2013-03-10 03:25:45 +0200 | [diff] [blame] | 774 | self.assertIn(b's_push: parser stack overflow', err) |
| 775 | self.assertIn(b'MemoryError', err) |
Christian Heimes | 90c3d9b | 2008-02-23 13:18:03 +0000 | [diff] [blame] | 776 | |
Mark Dickinson | 211c625 | 2009-02-01 10:28:51 +0000 | [diff] [blame] | 777 | class STObjectTestCase(unittest.TestCase): |
| 778 | """Test operations on ST objects themselves""" |
| 779 | |
| 780 | def test_comparisons(self): |
| 781 | # ST objects should support order and equality comparisons |
| 782 | st1 = parser.expr('2 + 3') |
| 783 | st2 = parser.suite('x = 2; y = x + 3') |
| 784 | st3 = parser.expr('list(x**3 for x in range(20))') |
| 785 | st1_copy = parser.expr('2 + 3') |
| 786 | st2_copy = parser.suite('x = 2; y = x + 3') |
| 787 | st3_copy = parser.expr('list(x**3 for x in range(20))') |
| 788 | |
| 789 | # exercise fast path for object identity |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 790 | self.assertEqual(st1 == st1, True) |
| 791 | self.assertEqual(st2 == st2, True) |
| 792 | self.assertEqual(st3 == st3, True) |
Mark Dickinson | 211c625 | 2009-02-01 10:28:51 +0000 | [diff] [blame] | 793 | # slow path equality |
| 794 | self.assertEqual(st1, st1_copy) |
| 795 | self.assertEqual(st2, st2_copy) |
| 796 | self.assertEqual(st3, st3_copy) |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 797 | self.assertEqual(st1 == st2, False) |
| 798 | self.assertEqual(st1 == st3, False) |
| 799 | self.assertEqual(st2 == st3, False) |
| 800 | self.assertEqual(st1 != st1, False) |
| 801 | self.assertEqual(st2 != st2, False) |
| 802 | self.assertEqual(st3 != st3, False) |
| 803 | self.assertEqual(st1 != st1_copy, False) |
| 804 | self.assertEqual(st2 != st2_copy, False) |
| 805 | self.assertEqual(st3 != st3_copy, False) |
| 806 | self.assertEqual(st2 != st1, True) |
| 807 | self.assertEqual(st1 != st3, True) |
| 808 | self.assertEqual(st3 != st2, True) |
Mark Dickinson | 211c625 | 2009-02-01 10:28:51 +0000 | [diff] [blame] | 809 | # we don't particularly care what the ordering is; just that |
| 810 | # it's usable and self-consistent |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 811 | self.assertEqual(st1 < st2, not (st2 <= st1)) |
| 812 | self.assertEqual(st1 < st3, not (st3 <= st1)) |
| 813 | self.assertEqual(st2 < st3, not (st3 <= st2)) |
| 814 | self.assertEqual(st1 < st2, st2 > st1) |
| 815 | self.assertEqual(st1 < st3, st3 > st1) |
| 816 | self.assertEqual(st2 < st3, st3 > st2) |
| 817 | self.assertEqual(st1 <= st2, st2 >= st1) |
| 818 | self.assertEqual(st3 <= st1, st1 >= st3) |
| 819 | self.assertEqual(st2 <= st3, st3 >= st2) |
Mark Dickinson | 211c625 | 2009-02-01 10:28:51 +0000 | [diff] [blame] | 820 | # transitivity |
| 821 | bottom = min(st1, st2, st3) |
| 822 | top = max(st1, st2, st3) |
| 823 | mid = sorted([st1, st2, st3])[1] |
Benjamin Peterson | c9c0f20 | 2009-06-30 23:06:06 +0000 | [diff] [blame] | 824 | self.assertTrue(bottom < mid) |
| 825 | self.assertTrue(bottom < top) |
| 826 | self.assertTrue(mid < top) |
| 827 | self.assertTrue(bottom <= mid) |
| 828 | self.assertTrue(bottom <= top) |
| 829 | self.assertTrue(mid <= top) |
| 830 | self.assertTrue(bottom <= bottom) |
| 831 | self.assertTrue(mid <= mid) |
| 832 | self.assertTrue(top <= top) |
Mark Dickinson | 211c625 | 2009-02-01 10:28:51 +0000 | [diff] [blame] | 833 | # interaction with other types |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 834 | self.assertEqual(st1 == 1588.602459, False) |
| 835 | self.assertEqual('spanish armada' != st2, True) |
Mark Dickinson | 211c625 | 2009-02-01 10:28:51 +0000 | [diff] [blame] | 836 | self.assertRaises(TypeError, operator.ge, st3, None) |
| 837 | self.assertRaises(TypeError, operator.le, False, st1) |
| 838 | self.assertRaises(TypeError, operator.lt, st1, 1815) |
| 839 | self.assertRaises(TypeError, operator.gt, b'waterloo', st2) |
| 840 | |
Serhiy Storchaka | a79f4c2 | 2017-04-19 21:09:21 +0300 | [diff] [blame] | 841 | def test_copy_pickle(self): |
| 842 | sts = [ |
| 843 | parser.expr('2 + 3'), |
| 844 | parser.suite('x = 2; y = x + 3'), |
| 845 | parser.expr('list(x**3 for x in range(20))') |
| 846 | ] |
| 847 | for st in sts: |
| 848 | st_copy = copy.copy(st) |
| 849 | self.assertEqual(st_copy.totuple(), st.totuple()) |
| 850 | st_copy = copy.deepcopy(st) |
| 851 | self.assertEqual(st_copy.totuple(), st.totuple()) |
| 852 | for proto in range(pickle.HIGHEST_PROTOCOL+1): |
| 853 | st_copy = pickle.loads(pickle.dumps(st, proto)) |
| 854 | self.assertEqual(st_copy.totuple(), st.totuple()) |
| 855 | |
Jesus Cea | e9c5318 | 2012-08-03 14:28:37 +0200 | [diff] [blame] | 856 | check_sizeof = support.check_sizeof |
| 857 | |
| 858 | @support.cpython_only |
| 859 | def test_sizeof(self): |
| 860 | def XXXROUNDUP(n): |
| 861 | if n <= 1: |
| 862 | return n |
| 863 | if n <= 128: |
| 864 | return (n + 3) & ~3 |
| 865 | return 1 << (n - 1).bit_length() |
| 866 | |
| 867 | basesize = support.calcobjsize('Pii') |
| 868 | nodesize = struct.calcsize('hP3iP0h') |
| 869 | def sizeofchildren(node): |
| 870 | if node is None: |
| 871 | return 0 |
| 872 | res = 0 |
| 873 | hasstr = len(node) > 1 and isinstance(node[-1], str) |
| 874 | if hasstr: |
| 875 | res += len(node[-1]) + 1 |
| 876 | children = node[1:-1] if hasstr else node[1:] |
| 877 | if children: |
| 878 | res += XXXROUNDUP(len(children)) * nodesize |
Jesus Cea | e9c5318 | 2012-08-03 14:28:37 +0200 | [diff] [blame] | 879 | for child in children: |
| 880 | res += sizeofchildren(child) |
| 881 | return res |
| 882 | |
| 883 | def check_st_sizeof(st): |
| 884 | self.check_sizeof(st, basesize + nodesize + |
| 885 | sizeofchildren(st.totuple())) |
| 886 | |
| 887 | check_st_sizeof(parser.expr('2 + 3')) |
| 888 | check_st_sizeof(parser.expr('2 + 3 + 4')) |
| 889 | check_st_sizeof(parser.suite('x = 2 + 3')) |
| 890 | check_st_sizeof(parser.suite('')) |
| 891 | check_st_sizeof(parser.suite('# -*- coding: utf-8 -*-')) |
| 892 | check_st_sizeof(parser.expr('[' + '2,' * 1000 + ']')) |
| 893 | |
Mark Dickinson | 211c625 | 2009-02-01 10:28:51 +0000 | [diff] [blame] | 894 | |
| 895 | # XXX tests for pickling and unpickling of ST objects should go here |
| 896 | |
Benjamin Peterson | f719957d | 2011-06-04 22:06:42 -0500 | [diff] [blame] | 897 | class OtherParserCase(unittest.TestCase): |
| 898 | |
| 899 | def test_two_args_to_expr(self): |
| 900 | # See bug #12264 |
| 901 | with self.assertRaises(TypeError): |
| 902 | parser.expr("a", "b") |
| 903 | |
Fred Drake | 2e2be37 | 2001-09-20 21:33:42 +0000 | [diff] [blame] | 904 | if __name__ == "__main__": |
Zachary Ware | 38c707e | 2015-04-13 15:00:43 -0500 | [diff] [blame] | 905 | unittest.main() |