1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/js/src/gdb/lib-for-tests/prolog.py Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,75 @@
1.4 +import gdb
1.5 +import os
1.6 +import re
1.7 +import sys
1.8 +import traceback
1.9 +
1.10 +# testlibdir is set on the GDB command line, via --eval-command python testlibdir=...
1.11 +sys.path[0:0] = [testlibdir]
1.12 +
1.13 +# Run the C++ fragment named |fragment|, stopping on entry to |function|
1.14 +# ('breakpoint', by default) and then select the calling frame.
1.15 +def run_fragment(fragment, function='breakpoint'):
1.16 + # Arrange to stop at a reasonable place in the test program.
1.17 + bp = gdb.Breakpoint(function);
1.18 + try:
1.19 + gdb.execute("run %s" % (fragment,))
1.20 + # Check that we did indeed stop by hitting the breakpoint we set.
1.21 + assert bp.hit_count == 1
1.22 + finally:
1.23 + bp.delete()
1.24 + gdb.execute('frame 1')
1.25 +
1.26 +# Assert that |actual| is equal to |expected|; if not, complain in a helpful way.
1.27 +def assert_eq(actual, expected):
1.28 + if actual != expected:
1.29 + raise AssertionError, """Unexpected result:
1.30 +expected: %r
1.31 +actual: %r""" % (expected, actual)
1.32 +
1.33 +# Assert that |value|'s pretty-printed form is |form|. If |value| is a
1.34 +# string, then evaluate it with gdb.parse_and_eval to produce a value.
1.35 +def assert_pretty(value, form):
1.36 + if isinstance(value, str):
1.37 + value = gdb.parse_and_eval(value)
1.38 + assert_eq(str(value), form)
1.39 +
1.40 +# Check that the list of registered pretty-printers includes one named
1.41 +# |printer|, with a subprinter named |subprinter|.
1.42 +def assert_subprinter_registered(printer, subprinter):
1.43 + # Match a line containing |printer| followed by a colon, and then a
1.44 + # series of more-indented lines containing |subprinter|.
1.45 +
1.46 + names = { 'printer': re.escape(printer), 'subprinter': re.escape(subprinter) }
1.47 + pat = r'^( +)%(printer)s *\n(\1 +.*\n)*\1 +%(subprinter)s *\n' % names
1.48 + output = gdb.execute('info pretty-printer', to_string=True)
1.49 + if not re.search(pat, output, re.MULTILINE):
1.50 + raise AssertionError, ("assert_subprinter_registered failed to find pretty-printer:\n"
1.51 + " %s:%s\n"
1.52 + "'info pretty-printer' says:\n"
1.53 + "%s" % (printer, subprinter, output))
1.54 +
1.55 +# Request full stack traces for Python errors.
1.56 +gdb.execute('set python print-stack full')
1.57 +
1.58 +# Tell GDB not to ask the user about the things we tell it to do.
1.59 +gdb.execute('set confirm off', False)
1.60 +
1.61 +# Some print settings that make testing easier.
1.62 +gdb.execute('set print static-members off')
1.63 +gdb.execute('set print address off')
1.64 +gdb.execute('set print pretty off')
1.65 +gdb.execute('set width 0')
1.66 +
1.67 +try:
1.68 + # testscript is set on the GDB command line, via:
1.69 + # --eval-command python testscript=...
1.70 + execfile(testscript)
1.71 +except AssertionError as err:
1.72 + sys.stderr.write('\nAssertion traceback:\n')
1.73 + (t, v, tb) = sys.exc_info()
1.74 + traceback.print_tb(tb)
1.75 + sys.stderr.write('\nTest assertion failed:\n')
1.76 + sys.stderr.write(str(err))
1.77 + sys.exit(1)
1.78 +
