Repository navigation
bpo-32136: Separate embedding tests from C API tests #4567
There are no files selected for viewing
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,202 @@ | ||
| # Run the tests in Programs/_testembed.c (tests for the CPython embedding APIs) | ||
| from test import support | ||
| import unittest | ||
|
|
||
| from collections import namedtuple | ||
| import os | ||
| import re | ||
| import subprocess | ||
| import sys | ||
|
|
||
|
Member
There was a problem hiding this comment. Would you mind to add an empty line for PEP8, please? :-) |
||
| class EmbeddingTests(unittest.TestCase): | ||
| def setUp(self): | ||
| here = os.path.abspath(__file__) | ||
| basepath = os.path.dirname(os.path.dirname(os.path.dirname(here))) | ||
| exename = "_testembed" | ||
| if sys.platform.startswith("win"): | ||
| ext = ("_d" if "_d" in sys.executable else "") + ".exe" | ||
| exename += ext | ||
| exepath = os.path.dirname(sys.executable) | ||
| else: | ||
| exepath = os.path.join(basepath, "Programs") | ||
| self.test_exe = exe = os.path.join(exepath, exename) | ||
| if not os.path.exists(exe): | ||
| self.skipTest("%r doesn't exist" % exe) | ||
| # This is needed otherwise we get a fatal error: | ||
| # "Py_Initialize: Unable to get the locale encoding | ||
| # LookupError: no codec search functions registered: can't find encoding" | ||
| self.oldcwd = os.getcwd() | ||
| os.chdir(basepath) | ||
|
|
||
| def tearDown(self): | ||
| os.chdir(self.oldcwd) | ||
|
|
||
| def run_embedded_interpreter(self, *args, env=None): | ||
| """Runs a test in the embedded interpreter""" | ||
| cmd = [self.test_exe] | ||
| cmd.extend(args) | ||
| if env is not None and sys.platform == 'win32': | ||
| # Windows requires at least the SYSTEMROOT environment variable to | ||
| # start Python. | ||
| env = env.copy() | ||
| env['SYSTEMROOT'] = os.environ['SYSTEMROOT'] | ||
|
|
||
| p = subprocess.Popen(cmd, | ||
| stdout=subprocess.PIPE, | ||
| stderr=subprocess.PIPE, | ||
| universal_newlines=True, | ||
| env=env) | ||
| (out, err) = p.communicate() | ||
| if p.returncode != 0 and support.verbose: | ||
| print(f"--- {cmd} failed ---") | ||
| print(f"stdout:\n{out}") | ||
| print(f"stderr:\n{out}") | ||
| print(f"------") | ||
|
|
||
| self.assertEqual(p.returncode, 0, | ||
| "bad returncode %d, stderr is %r" % | ||
| (p.returncode, err)) | ||
| return out, err | ||
|
|
||
| def run_repeated_init_and_subinterpreters(self): | ||
| out, err = self.run_embedded_interpreter("repeated_init_and_subinterpreters") | ||
| self.assertEqual(err, "") | ||
|
|
||
| # The output from _testembed looks like this: | ||
| # --- Pass 0 --- | ||
| # interp 0 <0x1cf9330>, thread state <0x1cf9700>: id(modules) = 139650431942728 | ||
| # interp 1 <0x1d4f690>, thread state <0x1d35350>: id(modules) = 139650431165784 | ||
| # interp 2 <0x1d5a690>, thread state <0x1d99ed0>: id(modules) = 139650413140368 | ||
| # interp 3 <0x1d4f690>, thread state <0x1dc3340>: id(modules) = 139650412862200 | ||
| # interp 0 <0x1cf9330>, thread state <0x1cf9700>: id(modules) = 139650431942728 | ||
| # --- Pass 1 --- | ||
| # ... | ||
|
|
||
| interp_pat = (r"^interp (\d+) <(0x[\dA-F]+)>, " | ||
| r"thread state <(0x[\dA-F]+)>: " | ||
| r"id\(modules\) = ([\d]+)$") | ||
| Interp = namedtuple("Interp", "id interp tstate modules") | ||
|
|
||
| numloops = 0 | ||
| current_run = [] | ||
| for line in out.splitlines(): | ||
| if line == "--- Pass {} ---".format(numloops): | ||
| self.assertEqual(len(current_run), 0) | ||
| if support.verbose: | ||
| print(line) | ||
| numloops += 1 | ||
| continue | ||
|
|
||
| self.assertLess(len(current_run), 5) | ||
| match = re.match(interp_pat, line) | ||
| if match is None: | ||
| self.assertRegex(line, interp_pat) | ||
|
|
||
| # Parse the line from the loop. The first line is the main | ||
| # interpreter and the 3 afterward are subinterpreters. | ||
| interp = Interp(*match.groups()) | ||
| if support.verbose: | ||
| print(interp) | ||
| self.assertTrue(interp.interp) | ||
| self.assertTrue(interp.tstate) | ||
| self.assertTrue(interp.modules) | ||
| current_run.append(interp) | ||
|
|
||
| # The last line in the loop should be the same as the first. | ||
| if len(current_run) == 5: | ||
| main = current_run[0] | ||
| self.assertEqual(interp, main) | ||
| yield current_run | ||
| current_run = [] | ||
|
|
||
| def test_subinterps_main(self): | ||
| for run in self.run_repeated_init_and_subinterpreters(): | ||
| main = run[0] | ||
|
|
||
| self.assertEqual(main.id, '0') | ||
|
|
||
| def test_subinterps_different_ids(self): | ||
| for run in self.run_repeated_init_and_subinterpreters(): | ||
| main, *subs, _ = run | ||
|
|
||
| mainid = int(main.id) | ||
| for i, sub in enumerate(subs): | ||
| self.assertEqual(sub.id, str(mainid + i + 1)) | ||
|
|
||
| def test_subinterps_distinct_state(self): | ||
| for run in self.run_repeated_init_and_subinterpreters(): | ||
| main, *subs, _ = run | ||
|
|
||
| if '0x0' in main: | ||
| # XXX Fix on Windows (and other platforms): something | ||
| # is going on with the pointers in Programs/_testembed.c. | ||
| # interp.interp is 0x0 and interp.modules is the same | ||
| # between interpreters. | ||
| raise unittest.SkipTest('platform prints pointers as 0x0') | ||
|
|
||
| for sub in subs: | ||
| # A new subinterpreter may have the same | ||
| # PyInterpreterState pointer as a previous one if | ||
| # the earlier one has already been destroyed. So | ||
| # we compare with the main interpreter. The same | ||
| # applies to tstate. | ||
| self.assertNotEqual(sub.interp, main.interp) | ||
| self.assertNotEqual(sub.tstate, main.tstate) | ||
| self.assertNotEqual(sub.modules, main.modules) | ||
|
|
||
| def test_forced_io_encoding(self): | ||
| # Checks forced configuration of embedded interpreter IO streams | ||
| env = dict(os.environ, PYTHONIOENCODING="utf-8:surrogateescape") | ||
| out, err = self.run_embedded_interpreter("forced_io_encoding", env=env) | ||
| if support.verbose > 1: | ||
| print() | ||
| print(out) | ||
| print(err) | ||
| expected_stream_encoding = "utf-8" | ||
| expected_errors = "surrogateescape" | ||
| expected_output = '\n'.join([ | ||
| "--- Use defaults ---", | ||
| "Expected encoding: default", | ||
| "Expected errors: default", | ||
| "stdin: {in_encoding}:{errors}", | ||
| "stdout: {out_encoding}:{errors}", | ||
| "stderr: {out_encoding}:backslashreplace", | ||
| "--- Set errors only ---", | ||
| "Expected encoding: default", | ||
| "Expected errors: ignore", | ||
| "stdin: {in_encoding}:ignore", | ||
| "stdout: {out_encoding}:ignore", | ||
| "stderr: {out_encoding}:backslashreplace", | ||
| "--- Set encoding only ---", | ||
| "Expected encoding: latin-1", | ||
| "Expected errors: default", | ||
| "stdin: latin-1:{errors}", | ||
| "stdout: latin-1:{errors}", | ||
| "stderr: latin-1:backslashreplace", | ||
| "--- Set encoding and errors ---", | ||
| "Expected encoding: latin-1", | ||
| "Expected errors: replace", | ||
| "stdin: latin-1:replace", | ||
| "stdout: latin-1:replace", | ||
| "stderr: latin-1:backslashreplace"]) | ||
| expected_output = expected_output.format( | ||
| in_encoding=expected_stream_encoding, | ||
| out_encoding=expected_stream_encoding, | ||
| errors=expected_errors) | ||
| # This is useful if we ever trip over odd platform behaviour | ||
| self.maxDiff = None | ||
| self.assertEqual(out.strip(), expected_output) | ||
|
|
||
| def test_pre_initialization_api(self): | ||
| """ | ||
| Checks the few parts of the C-API that work before the runtine | ||
| is initialized (via Py_Initialize()). | ||
| """ | ||
| env = dict(os.environ, PYTHONPATH=os.pathsep.join(sys.path)) | ||
| out, err = self.run_embedded_interpreter("pre_initialization_api", env=env) | ||
| self.assertEqual(out, '') | ||
| self.assertEqual(err, '') | ||
|
|
||
|
|
||
| if __name__ == "__main__": | ||
| unittest.main() | ||
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,3 @@ | ||
| The runtime embedding tests have been split out from | ||
| ``Lib/test/test_capi.py`` into a new ``Lib/test/test_embed.py`` | ||
| file. |
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
There was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
pyflakes found 2 unused imports:
Lib/test/test_capi.py:4:1: F401 'collections.namedtuple' imported but unused
Lib/test/test_capi.py:7:1: F401 'platform' imported but unused
There was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
Both removed now.