[gdb/testsuite] Reimplement gdb.gdb/python-interrupts.exp as unittest

The test-case gdb.gdb/python-interrupts.exp:
- runs to captured_command_loop
- sets a breakpoint at set_active_ext_lang
- calls a python command
- verifies the command triggers the breakpoint
- sends a signal and verifies the result

The test-case is fragile, because (f.i. with -flto) it cannot be guaranteed
that captured_command_loop and set_active_ext_lang are available for setting
breakpoints.

Reimplement the test-case as unittest, using:
- execute_command_to_string to capture the output
- try/catch to catch the "Error while executing Python code" exception
- a new hook selftests::hook_set_active_ext_lang to raise the signal

Tested on x86_64-linux.

1 files changed, 0 insertions, 35 deletions

diff --git a/gdb/testsuite/gdb.gdb/python-interrupts.exp b/gdb/testsuite/gdb.gdb/python-interrupts.exp
deleted file mode 100644
index 33cf1ef..0000000
--- a/gdb/testsuite/gdb.gdb/python-interrupts.exp
+++ /dev/null
@@ -1,35 +0,0 @@
-# Copyright 2014-2021 Free Software Foundation, Inc.
-
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 3 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-# Test Python SIGINT handling.
-# This is easiest if we can send SIGINT when gdb is at particular points.
-
-load_lib selftest-support.exp
-load_lib gdb-python.exp
-
-proc test_python_interrupts {} {
-    if {[skip_python_tests]} {
-	return -1
-    }
-
-    gdb_breakpoint set_active_ext_lang temporary
-    gdb_test "call catch_command_errors(execute_command, \"python print(5)\", 0, true)" \
-	"Temporary breakpoint.*silently stop."
-    gdb_test "signal SIGINT" \
-	"KeyboardInterrupt.*Error while executing Python code."
-    return 0
-}
-
-do_self_tests captured_command_loop test_python_interrupts