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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
commit | 26a029d407be480d791972afb5975cf62c9360a6 (patch) | |
tree | f435a8308119effd964b339f76abb83a57c29483 /js/src/gdb/lib-for-tests/prologue.py | |
parent | Initial commit. (diff) | |
download | firefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz firefox-26a029d407be480d791972afb5975cf62c9360a6.zip |
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'js/src/gdb/lib-for-tests/prologue.py')
-rw-r--r-- | js/src/gdb/lib-for-tests/prologue.py | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/js/src/gdb/lib-for-tests/prologue.py b/js/src/gdb/lib-for-tests/prologue.py new file mode 100644 index 0000000000..e94ce480d6 --- /dev/null +++ b/js/src/gdb/lib-for-tests/prologue.py @@ -0,0 +1,129 @@ +# This Source Code Form is subject to the terms of the Mozilla Public +# License, v. 2.0. If a copy of the MPL was not distributed with this file, +# You can obtain one at http://mozilla.org/MPL/2.0/. + +# flake8: noqa: F821 + +import re +import sys +import traceback + +import gdb + +# testlibdir is set on the GDB command line, via --eval-command python testlibdir=... +sys.path[0:0] = [testlibdir] + +active_fragment = None + +# Run the C++ fragment named |fragment|, stopping on entry to |function| +# ('breakpoint', by default) and then select the calling frame. + + +def run_fragment(fragment, function="gdb-tests.cpp:breakpoint"): + # Arrange to stop at a reasonable place in the test program. + bp = gdb.Breakpoint(function) + try: + gdb.execute("run %s" % (fragment,)) + # Check that we did indeed stop by hitting the breakpoint we set. + assert bp.hit_count == 1 + finally: + bp.delete() + gdb.execute("frame 1") + + global active_fragment + active_fragment = fragment + + +# Assert that |actual| is equal to |expected|; if not, complain in a helpful way. + + +def assert_eq(actual, expected): + if actual != expected: + raise AssertionError( + """Unexpected result: +expected: %r +actual: %r""" + % (expected, actual) + ) + + +# Assert that |expected| regex matches |actual| result; if not, complain in a helpful way. + + +def assert_match(actual, expected): + if re.match(expected, actual, re.MULTILINE) is None: + raise AssertionError( + """Unexpected result: +expected pattern: %r +actual: %r""" + % (expected, actual) + ) + + +# Assert that |value|'s pretty-printed form is |form|. If |value| is a +# string, then evaluate it with gdb.parse_and_eval to produce a value. + + +def assert_pretty(value, form): + if isinstance(value, str): + value = gdb.parse_and_eval(value) + assert_eq(str(value), form) + + +# Assert that |value|'s pretty-printed form match the pattern |pattern|. If +# |value| is a string, then evaluate it with gdb.parse_and_eval to produce a +# value. + + +def assert_regexp_pretty(value, form): + if isinstance(value, str): + value = gdb.parse_and_eval(value) + assert_match(str(value), form) + + +# Check that the list of registered pretty-printers includes one named +# |printer|, with a subprinter named |subprinter|. + + +def assert_subprinter_registered(printer, subprinter): + # Match a line containing |printer| followed by a colon, and then a + # series of more-indented lines containing |subprinter|. + + names = {"printer": re.escape(printer), "subprinter": re.escape(subprinter)} + pat = r"^( +)%(printer)s *\n(\1 +.*\n)*\1 +%(subprinter)s *\n" % names + output = gdb.execute("info pretty-printer", to_string=True) + if not re.search(pat, output, re.MULTILINE): + raise AssertionError( + "assert_subprinter_registered failed to find pretty-printer:\n" + " %s:%s\n" + "'info pretty-printer' says:\n" + "%s" % (printer, subprinter, output) + ) + + +# Request full stack traces for Python errors. +gdb.execute("set python print-stack full") + +# Tell GDB not to ask the user about the things we tell it to do. +gdb.execute("set confirm off", False) + +# Some print settings that make testing easier. +gdb.execute("set print static-members off") +gdb.execute("set print address off") +gdb.execute("set print pretty off") +gdb.execute("set width 0") + +try: + # testscript is set on the GDB command line, via: + # --eval-command python testscript=... + execfile(testscript, globals(), locals()) +except AssertionError as err: + header = "\nAssertion traceback" + if active_fragment: + header += " for " + active_fragment + sys.stderr.write(header + ":\n") + (t, v, tb) = sys.exc_info() + traceback.print_tb(tb) + sys.stderr.write("\nTest assertion failed:\n") + sys.stderr.write(str(err)) + sys.exit(1) |