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comparison: js/src/gdb/lib-for-tests/prolog.py
js/src/gdb/lib-for-tests/prolog.py
- changeset 0
- 6474c204b198
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| -1:000000000000 | 0:dac18e519393 |
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| 1 import gdb | |
| 2 import os | |
| 3 import re | |
| 4 import sys | |
| 5 import traceback | |
| 6 | |
| 7 # testlibdir is set on the GDB command line, via --eval-command python testlibdir=... | |
| 8 sys.path[0:0] = [testlibdir] | |
| 9 | |
| 10 # Run the C++ fragment named |fragment|, stopping on entry to |function| | |
| 11 # ('breakpoint', by default) and then select the calling frame. | |
| 12 def run_fragment(fragment, function='breakpoint'): | |
| 13 # Arrange to stop at a reasonable place in the test program. | |
| 14 bp = gdb.Breakpoint(function); | |
| 15 try: | |
| 16 gdb.execute("run %s" % (fragment,)) | |
| 17 # Check that we did indeed stop by hitting the breakpoint we set. | |
| 18 assert bp.hit_count == 1 | |
| 19 finally: | |
| 20 bp.delete() | |
| 21 gdb.execute('frame 1') | |
| 22 | |
| 23 # Assert that |actual| is equal to |expected|; if not, complain in a helpful way. | |
| 24 def assert_eq(actual, expected): | |
| 25 if actual != expected: | |
| 26 raise AssertionError, """Unexpected result: | |
| 27 expected: %r | |
| 28 actual: %r""" % (expected, actual) | |
| 29 | |
| 30 # Assert that |value|'s pretty-printed form is |form|. If |value| is a | |
| 31 # string, then evaluate it with gdb.parse_and_eval to produce a value. | |
| 32 def assert_pretty(value, form): | |
| 33 if isinstance(value, str): | |
| 34 value = gdb.parse_and_eval(value) | |
| 35 assert_eq(str(value), form) | |
| 36 | |
| 37 # Check that the list of registered pretty-printers includes one named | |
| 38 # |printer|, with a subprinter named |subprinter|. | |
| 39 def assert_subprinter_registered(printer, subprinter): | |
| 40 # Match a line containing |printer| followed by a colon, and then a | |
| 41 # series of more-indented lines containing |subprinter|. | |
| 42 | |
| 43 names = { 'printer': re.escape(printer), 'subprinter': re.escape(subprinter) } | |
| 44 pat = r'^( +)%(printer)s *\n(\1 +.*\n)*\1 +%(subprinter)s *\n' % names | |
| 45 output = gdb.execute('info pretty-printer', to_string=True) | |
| 46 if not re.search(pat, output, re.MULTILINE): | |
| 47 raise AssertionError, ("assert_subprinter_registered failed to find pretty-printer:\n" | |
| 48 " %s:%s\n" | |
| 49 "'info pretty-printer' says:\n" | |
| 50 "%s" % (printer, subprinter, output)) | |
| 51 | |
| 52 # Request full stack traces for Python errors. | |
| 53 gdb.execute('set python print-stack full') | |
| 54 | |
| 55 # Tell GDB not to ask the user about the things we tell it to do. | |
| 56 gdb.execute('set confirm off', False) | |
| 57 | |
| 58 # Some print settings that make testing easier. | |
| 59 gdb.execute('set print static-members off') | |
| 60 gdb.execute('set print address off') | |
| 61 gdb.execute('set print pretty off') | |
| 62 gdb.execute('set width 0') | |
| 63 | |
| 64 try: | |
| 65 # testscript is set on the GDB command line, via: | |
| 66 # --eval-command python testscript=... | |
| 67 execfile(testscript) | |
| 68 except AssertionError as err: | |
| 69 sys.stderr.write('\nAssertion traceback:\n') | |
| 70 (t, v, tb) = sys.exc_info() | |
| 71 traceback.print_tb(tb) | |
| 72 sys.stderr.write('\nTest assertion failed:\n') | |
| 73 sys.stderr.write(str(err)) | |
| 74 sys.exit(1) | |
| 75 |
