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[3.12] gh-109972: Enhance test_gdb (#110026) (#110351)

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* gh-109972: Enhance test_gdb (#110026)

* Split test_pycfunction.py: add test_cfunction_full.py.
  Split the function into the following 6 functions. In verbose
  mode, these "pycfunction" tests now log each tested call.

  * test_pycfunction_noargs()
  * test_pycfunction_o()
  * test_pycfunction_varargs()
  * test_pycfunction_varargs_keywords()
  * test_pycfunction_fastcall()
  * test_pycfunction_fastcall_keywords()

* Move get_gdb_repr() to PrettyPrintTests.
* Replace DebuggerTests.get_sample_script() with SAMPLE_SCRIPT.
* Rename checkout_hook_path to CHECKOUT_HOOK_PATH.
* Rename gdb_version to GDB_VERSION_TEXT.
* Replace (gdb_major_version, gdb_minor_version) with GDB_VERSION.
* run_gdb() uses "backslashreplace" error handler instead of "replace".
* Add check_gdb() function to util.py.
* Enhance support.check_cflags_pgo(): check also for sysconfig
  PGO_PROF_USE_FLAG (if available) in compiler flags.
* Move some SkipTest checks to test_gdb/__init__.py.
* Elaborate why gdb cannot be tested on Windows: gdb doesn't support
  PDB debug symbol files.

(cherry picked from commit 757cbd4f29)

* gh-104736: Fix test_gdb tests on ppc64le with clang (#109360)

Fix test_gdb on Python built with LLVM clang 16 on Linux ppc64le (ex:
Fedora 38). Search patterns in gdb "bt" command output to detect
when gdb fails to retrieve the traceback. For example, skip a test if
"Backtrace stopped: frame did not save the PC" is found.

(cherry picked from commit 44d9a71ea2)

* gh-110166: Fix gdb CFunctionFullTests on ppc64le clang build (#110331)

CFunctionFullTests now also runs "bt" command before "py-bt-full",
similar to CFunctionTests which also runs "bt" command before
"py-bt". So test_gdb can skip the test if patterns like "?? ()" are
found in the gdb output.

(cherry picked from commit 1de9406f91)
This commit is contained in:
Victor Stinner 2023-10-04 13:34:28 +02:00 • committed by GitHub
parent 1d032ea3d6
commit bbce8bd05d
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GPG key ID: 4AEE18F83AFDEB23
9 changed files with 303 additions and 218 deletions
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20
Lib/test/test_gdb/test_misc.py
View file

@ -2,7 +2,7 @@ import re
import unittest
from test.support import python_is_optimized
from .util import run_gdb, setup_module, DebuggerTests
from .util import run_gdb, setup_module, DebuggerTests, SAMPLE_SCRIPT
def setUpModule():
@ -32,7 +32,7 @@ class PyListTests(DebuggerTests):
def test_basic_command(self):
'Verify that the "py-list" command works'
bt = self.get_stack_trace(script=self.get_sample_script(),
bt = self.get_stack_trace(script=SAMPLE_SCRIPT,
cmds_after_breakpoint=['py-list'])
self.assertListing(' 5 \n'
@ -47,7 +47,7 @@ class PyListTests(DebuggerTests):
def test_one_abs_arg(self):
'Verify the "py-list" command with one absolute argument'
bt = self.get_stack_trace(script=self.get_sample_script(),
bt = self.get_stack_trace(script=SAMPLE_SCRIPT,
cmds_after_breakpoint=['py-list 9'])
self.assertListing(' 9 def baz(*args):\n'
@ -58,7 +58,7 @@ class PyListTests(DebuggerTests):
def test_two_abs_args(self):
'Verify the "py-list" command with two absolute arguments'
bt = self.get_stack_trace(script=self.get_sample_script(),
bt = self.get_stack_trace(script=SAMPLE_SCRIPT,
cmds_after_breakpoint=['py-list 1,3'])
self.assertListing(' 1 # Sample script for use by test_gdb\n'
@ -101,7 +101,7 @@ $''')
@unittest.skipUnless(HAS_PYUP_PYDOWN, "test requires py-up/py-down commands")
def test_down_at_bottom(self):
'Verify handling of "py-down" at the bottom of the stack'
bt = self.get_stack_trace(script=self.get_sample_script(),
bt = self.get_stack_trace(script=SAMPLE_SCRIPT,
cmds_after_breakpoint=['py-down'])
self.assertEndsWith(bt,
'Unable to find a newer python frame\n')
@ -109,7 +109,7 @@ $''')
@unittest.skipUnless(HAS_PYUP_PYDOWN, "test requires py-up/py-down commands")
def test_up_at_top(self):
'Verify handling of "py-up" at the top of the stack'
bt = self.get_stack_trace(script=self.get_sample_script(),
bt = self.get_stack_trace(script=SAMPLE_SCRIPT,
cmds_after_breakpoint=['py-up'] * 5)
self.assertEndsWith(bt,
'Unable to find an older python frame\n')
@ -150,7 +150,7 @@ class PyPrintTests(DebuggerTests):
@unittest.skipIf(python_is_optimized(),
"Python was compiled with optimizations")
def test_printing_global(self):
bt = self.get_stack_trace(script=self.get_sample_script(),
bt = self.get_stack_trace(script=SAMPLE_SCRIPT,
cmds_after_breakpoint=['py-up', 'py-print __name__'])
self.assertMultilineMatches(bt,
r".*\nglobal '__name__' = '__main__'\n.*")
@ -158,7 +158,7 @@ class PyPrintTests(DebuggerTests):
@unittest.skipIf(python_is_optimized(),
"Python was compiled with optimizations")
def test_printing_builtin(self):
bt = self.get_stack_trace(script=self.get_sample_script(),
bt = self.get_stack_trace(script=SAMPLE_SCRIPT,
cmds_after_breakpoint=['py-up', 'py-print len'])
self.assertMultilineMatches(bt,
r".*\nbuiltin 'len' = <built-in method len of module object at remote 0x-?[0-9a-f]+>\n.*")
@ -167,7 +167,7 @@ class PyLocalsTests(DebuggerTests):
@unittest.skipIf(python_is_optimized(),
"Python was compiled with optimizations")
def test_basic_command(self):
bt = self.get_stack_trace(script=self.get_sample_script(),
bt = self.get_stack_trace(script=SAMPLE_SCRIPT,
cmds_after_breakpoint=['py-up', 'py-locals'])
self.assertMultilineMatches(bt,
r".*\nargs = \(1, 2, 3\)\n.*")
@ -176,7 +176,7 @@ class PyLocalsTests(DebuggerTests):
@unittest.skipIf(python_is_optimized(),
"Python was compiled with optimizations")
def test_locals_after_up(self):
bt = self.get_stack_trace(script=self.get_sample_script(),
bt = self.get_stack_trace(script=SAMPLE_SCRIPT,
cmds_after_breakpoint=['py-up', 'py-up', 'py-locals'])
self.assertMultilineMatches(bt,
r'''^.*