forked from OSchip/llvm-project
610 lines
22 KiB
Python
610 lines
22 KiB
Python
"""
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LLDB module which provides the abstract base class of lldb test case.
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The concrete subclass can override lldbtest.TesBase in order to inherit the
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common behavior for unitest.TestCase.setUp/tearDown implemented in this file.
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The subclass should override the attribute mydir in order for the python runtime
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to locate the individual test cases when running as part of a large test suite
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or when running each test case as a separate python invocation.
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./dotest.py provides a test driver which sets up the environment to run the
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entire test suite. Users who want to run a test case on its own can specify the
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LLDB_TEST and PYTHONPATH environment variables, for example:
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$ export LLDB_TEST=$PWD
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$ export PYTHONPATH=/Volumes/data/lldb/svn/trunk/build/Debug/LLDB.framework/Resources/Python:$LLDB_TEST:$LLDB_TEST/plugins
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$ echo $LLDB_TEST
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/Volumes/data/lldb/svn/trunk/test
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$ echo $PYTHONPATH
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/Volumes/data/lldb/svn/trunk/build/Debug/LLDB.framework/Resources/Python:/Volumes/data/lldb/svn/trunk/test:/Volumes/data/lldb/svn/trunk/test/plugins
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$ python function_types/TestFunctionTypes.py
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.
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----------------------------------------------------------------------
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Ran 1 test in 0.363s
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OK
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$ LLDB_COMMAND_TRACE=YES python array_types/TestArrayTypes.py
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...
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runCmd: breakpoint set -f main.c -l 42
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output: Breakpoint created: 1: file ='main.c', line = 42, locations = 1
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runCmd: run
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output: Launching '/Volumes/data/lldb/svn/trunk/test/array_types/a.out' (x86_64)
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...
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runCmd: frame variable strings
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output: (char *[4]) strings = {
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(char *) strings[0] = 0x0000000100000f0c "Hello",
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(char *) strings[1] = 0x0000000100000f12 "Hola",
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(char *) strings[2] = 0x0000000100000f17 "Bonjour",
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(char *) strings[3] = 0x0000000100000f1f "Guten Tag"
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}
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runCmd: frame variable char_16
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output: (char [16]) char_16 = {
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(char) char_16[0] = 'H',
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(char) char_16[1] = 'e',
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(char) char_16[2] = 'l',
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(char) char_16[3] = 'l',
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(char) char_16[4] = 'o',
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(char) char_16[5] = ' ',
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(char) char_16[6] = 'W',
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(char) char_16[7] = 'o',
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(char) char_16[8] = 'r',
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(char) char_16[9] = 'l',
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(char) char_16[10] = 'd',
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(char) char_16[11] = '\n',
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(char) char_16[12] = '\0',
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(char) char_16[13] = '\0',
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(char) char_16[14] = '\0',
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(char) char_16[15] = '\0'
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}
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runCmd: frame variable ushort_matrix
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output: (unsigned short [2][3]) ushort_matrix = {
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(unsigned short [3]) ushort_matrix[0] = {
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(unsigned short) ushort_matrix[0][0] = 0x0001,
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(unsigned short) ushort_matrix[0][1] = 0x0002,
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(unsigned short) ushort_matrix[0][2] = 0x0003
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},
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(unsigned short [3]) ushort_matrix[1] = {
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(unsigned short) ushort_matrix[1][0] = 0x000b,
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(unsigned short) ushort_matrix[1][1] = 0x0016,
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(unsigned short) ushort_matrix[1][2] = 0x0021
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}
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}
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runCmd: frame variable long_6
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output: (long [6]) long_6 = {
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(long) long_6[0] = 1,
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(long) long_6[1] = 2,
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(long) long_6[2] = 3,
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(long) long_6[3] = 4,
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(long) long_6[4] = 5,
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(long) long_6[5] = 6
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}
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.
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----------------------------------------------------------------------
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Ran 1 test in 0.349s
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OK
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$
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"""
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import os, sys, traceback
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import re
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from subprocess import *
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import time
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import types
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import unittest2
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import lldb
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# See also dotest.parseOptionsAndInitTestdirs(), where the environment variables
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# LLDB_COMMAND_TRACE and LLDB_NO_CLEANUP are set from '-t' and '-r dir' options.
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# By default, traceAlways is False.
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if "LLDB_COMMAND_TRACE" in os.environ and os.environ["LLDB_COMMAND_TRACE"]=="YES":
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traceAlways = True
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else:
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traceAlways = False
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# By default, doCleanup is True.
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if "LLDB_DO_CLEANUP" in os.environ and os.environ["LLDB_DO_CLEANUP"]=="NO":
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doCleanup = False
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else:
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doCleanup = True
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#
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# Some commonly used assert messages.
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#
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COMMAND_FAILED_AS_EXPECTED = "Command has failed as expected"
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CURRENT_EXECUTABLE_SET = "Current executable set successfully"
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PROCESS_IS_VALID = "Process is valid"
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PROCESS_KILLED = "Process is killed successfully"
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RUN_SUCCEEDED = "Process is launched successfully"
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RUN_COMPLETED = "Process exited successfully"
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BACKTRACE_DISPLAYED_CORRECTLY = "Backtrace displayed correctly"
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BREAKPOINT_CREATED = "Breakpoint created successfully"
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BREAKPOINT_PENDING_CREATED = "Pending breakpoint created successfully"
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BREAKPOINT_HIT_ONCE = "Breakpoint resolved with hit cout = 1"
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BREAKPOINT_HIT_TWICE = "Breakpoint resolved with hit cout = 2"
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STEP_OUT_SUCCEEDED = "Thread step-out succeeded"
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STOPPED_DUE_TO_BREAKPOINT = "Process state is stopped due to breakpoint"
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STOPPED_DUE_TO_STEP_IN = "Process state is stopped due to step in"
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DATA_TYPES_DISPLAYED_CORRECTLY = "Data type(s) displayed correctly"
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VALID_BREAKPOINT = "Got a valid breakpoint"
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VALID_FILESPEC = "Got a valid filespec"
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VALID_PROCESS = "Got a valid process"
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VALID_TARGET = "Got a valid target"
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VARIABLES_DISPLAYED_CORRECTLY = "Variable(s) displayed correctly"
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#
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# And a generic "Command '%s' returns successfully" message generator.
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#
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def CMD_MSG(str, exe):
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if exe:
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return "Command '%s' returns successfully" % str
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else:
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return "'%s' compares successfully" % str
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#
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# Returns an env variable array from the os.environ map object.
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#
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def EnvArray():
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return map(lambda k,v: k+"="+v, os.environ.keys(), os.environ.values())
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# From 2.7's subprocess.check_output() convenience function.
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def system(*popenargs, **kwargs):
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r"""Run command with arguments and return its output as a byte string.
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If the exit code was non-zero it raises a CalledProcessError. The
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CalledProcessError object will have the return code in the returncode
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attribute and output in the output attribute.
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The arguments are the same as for the Popen constructor. Example:
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>>> check_output(["ls", "-l", "/dev/null"])
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'crw-rw-rw- 1 root root 1, 3 Oct 18 2007 /dev/null\n'
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The stdout argument is not allowed as it is used internally.
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To capture standard error in the result, use stderr=STDOUT.
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>>> check_output(["/bin/sh", "-c",
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... "ls -l non_existent_file ; exit 0"],
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... stderr=STDOUT)
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'ls: non_existent_file: No such file or directory\n'
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"""
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if 'stdout' in kwargs:
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raise ValueError('stdout argument not allowed, it will be overridden.')
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process = Popen(stdout=PIPE, *popenargs, **kwargs)
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output, error = process.communicate()
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retcode = process.poll()
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if traceAlways:
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if isinstance(popenargs, types.StringTypes):
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args = [popenargs]
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else:
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args = list(popenargs)
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print >> sys.stderr
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print >> sys.stderr, "os command:", args
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print >> sys.stderr, "stdout:", output
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print >> sys.stderr, "stderr:", error
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print >> sys.stderr, "retcode:", retcode
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print >> sys.stderr
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if retcode:
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cmd = kwargs.get("args")
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if cmd is None:
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cmd = popenargs[0]
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raise CalledProcessError(retcode, cmd)
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return output
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def line_number(filename, string_to_match):
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"""Helper function to return the line number of the first matched string."""
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with open(filename, 'r') as f:
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for i, line in enumerate(f):
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if line.find(string_to_match) != -1:
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# Found our match.
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return i
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return -1
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def pointer_size():
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"""Return the pointer size of the host system."""
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import ctypes
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a_pointer = ctypes.c_void_p(0xffff)
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return 8 * ctypes.sizeof(a_pointer)
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class TestBase(unittest2.TestCase):
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"""This LLDB abstract base class is meant to be subclassed."""
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@classmethod
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def skipLongRunningTest(cls):
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"""
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By default, we skip long running test case.
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This can be overridden by passing '-l' to the test driver (dotest.py).
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"""
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if "LLDB_SKIP_LONG_RUNNING_TEST" in os.environ and "NO" == os.environ["LLDB_SKIP_LONG_RUNNING_TEST"]:
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return False
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else:
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return True
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# The concrete subclass should override this attribute.
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mydir = None
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# State pertaining to the inferior process, if any.
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# This reflects inferior process started through the command interface with
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# either the lldb "run" or "process launch" command.
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# See also self.runCmd().
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runStarted = False
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# Maximum allowed attempts when launching the inferior process.
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# Can be overridden by the LLDB_MAX_LAUNCH_COUNT environment variable.
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maxLaunchCount = 3;
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# Time to wait before the next launching attempt in second(s).
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# Can be overridden by the LLDB_TIME_WAIT environment variable.
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timeWait = 1.0;
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# Keep track of the old current working directory.
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oldcwd = None
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@classmethod
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def setUpClass(cls):
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"""
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Python unittest framework class setup fixture.
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Do current directory manipulation.
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"""
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# Fail fast if 'mydir' attribute is not overridden.
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if not cls.mydir or len(cls.mydir) == 0:
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raise Exception("Subclasses must override the 'mydir' attribute.")
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# Save old working directory.
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cls.oldcwd = os.getcwd()
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# Change current working directory if ${LLDB_TEST} is defined.
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# See also dotest.py which sets up ${LLDB_TEST}.
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if ("LLDB_TEST" in os.environ):
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if traceAlways:
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print >> sys.stderr, "Change dir to:", os.path.join(os.environ["LLDB_TEST"], cls.mydir)
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os.chdir(os.path.join(os.environ["LLDB_TEST"], cls.mydir))
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@classmethod
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def tearDownClass(cls):
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"""
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Python unittest framework class teardown fixture.
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Do class-wide cleanup.
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"""
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if doCleanup:
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# First, let's do the platform-specific cleanup.
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module = __import__(sys.platform)
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if not module.cleanup():
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raise Exception("Don't know how to do cleanup")
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# Subclass might have specific cleanup function defined.
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if getattr(cls, "classCleanup", None):
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if traceAlways:
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print >> sys.stderr, "Call class-specific cleanup function for class:", cls
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try:
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cls.classCleanup()
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except:
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exc_type, exc_value, exc_tb = sys.exc_info()
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traceback.print_exception(exc_type, exc_value, exc_tb)
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# Restore old working directory.
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if traceAlways:
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print >> sys.stderr, "Restore dir to:", cls.oldcwd
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os.chdir(cls.oldcwd)
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def setUp(self):
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#import traceback
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#traceback.print_stack()
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if ("LLDB_WAIT_BETWEEN_TEST_CASES" in os.environ and
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os.environ["LLDB_WAIT_BETWEEN_TEST_CASES"] == 'YES'):
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time.sleep(0.5)
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if "LLDB_MAX_LAUNCH_COUNT" in os.environ:
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self.maxLaunchCount = int(os.environ["LLDB_MAX_LAUNCH_COUNT"])
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if "LLDB_TIME_WAIT" in os.environ:
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self.timeWait = float(os.environ["LLDB_TIME_WAIT"])
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# Create the debugger instance if necessary.
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try:
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self.dbg = lldb.DBG
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except AttributeError:
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self.dbg = lldb.SBDebugger.Create()
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if not self.dbg.IsValid():
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raise Exception('Invalid debugger instance')
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# We want our debugger to be synchronous.
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self.dbg.SetAsync(False)
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# There is no process associated with the debugger as yet.
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# See also self.tearDown() where it checks whether self.process has a
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# valid reference and calls self.process.Kill() to kill the process.
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self.process = None
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# Retrieve the associated command interpreter instance.
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self.ci = self.dbg.GetCommandInterpreter()
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if not self.ci:
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raise Exception('Could not get the command interpreter')
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# And the result object.
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self.res = lldb.SBCommandReturnObject()
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# These are for customized teardown cleanup.
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self.dict = None
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self.doTearDownCleanup = False
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def setTearDownCleanup(self, dictionary=None):
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self.dict = dictionary
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self.doTearDownCleanup = True
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def tearDown(self):
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#import traceback
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#traceback.print_stack()
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# Terminate the current process being debugged, if any.
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if self.runStarted:
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self.runCmd("process kill", PROCESS_KILLED, check=False)
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elif self.process and self.process.IsValid():
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rc = self.invoke(self.process, "Kill")
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self.assertTrue(rc.Success(), PROCESS_KILLED)
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del self.process
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del self.dbg
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# Perform registered teardown cleanup.
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if doCleanup and self.doTearDownCleanup:
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module = __import__(sys.platform)
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if not module.cleanup(dictionary=self.dict):
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raise Exception("Don't know how to do cleanup")
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def runCmd(self, cmd, msg=None, check=True, trace=False, setCookie=True):
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"""
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Ask the command interpreter to handle the command and then check its
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return status.
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"""
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# Fail fast if 'cmd' is not meaningful.
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if not cmd or len(cmd) == 0:
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raise Exception("Bad 'cmd' parameter encountered")
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trace = (True if traceAlways else trace)
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running = (cmd.startswith("run") or cmd.startswith("process launch"))
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for i in range(self.maxLaunchCount if running else 1):
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self.ci.HandleCommand(cmd, self.res)
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if trace:
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print >> sys.stderr, "runCmd:", cmd
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if self.res.Succeeded():
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print >> sys.stderr, "output:", self.res.GetOutput()
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else:
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print >> sys.stderr, "runCmd failed!"
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print >> sys.stderr, self.res.GetError()
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if running:
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# For process launch, wait some time before possible next try.
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time.sleep(self.timeWait)
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if self.res.Succeeded():
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break
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elif running:
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print >> sys.stderr, "Command '" + cmd + "' failed!"
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# Modify runStarted only if "run" or "process launch" was encountered.
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if running:
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self.runStarted = running and setCookie
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if check:
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self.assertTrue(self.res.Succeeded(),
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msg if msg else CMD_MSG(cmd, True))
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def expect(self, str, msg=None, patterns=None, startstr=None, substrs=None, trace=False, error=False, matching=True, exe=True):
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"""
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Similar to runCmd; with additional expect style output matching ability.
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Ask the command interpreter to handle the command and then check its
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return status. The 'msg' parameter specifies an informational assert
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message. We expect the output from running the command to start with
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'startstr', matches the substrings contained in 'substrs', and regexp
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matches the patterns contained in 'patterns'.
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If the keyword argument error is set to True, it signifies that the API
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client is expecting the command to fail. In this case, the error stream
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from running the command is retrieved and compared against the golden
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input, instead.
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If the keyword argument matching is set to False, it signifies that the API
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client is expecting the output of the command not to match the golden
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input.
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Finally, the required argument 'str' represents the lldb command to be
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sent to the command interpreter. In case the keyword argument 'exe' is
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set to False, the 'str' is treated as a string to be matched/not-matched
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against the golden input.
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"""
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trace = (True if traceAlways else trace)
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if exe:
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# First run the command. If we are expecting error, set check=False.
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self.runCmd(str, trace = (True if trace else False), check = not error)
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# Then compare the output against expected strings.
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output = self.res.GetError() if error else self.res.GetOutput()
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# If error is True, the API client expects the command to fail!
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if error:
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self.assertFalse(self.res.Succeeded(),
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"Command '" + str + "' is expected to fail!")
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else:
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# No execution required, just compare str against the golden input.
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output = str
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if trace:
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print >> sys.stderr, "looking at:", output
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# The heading says either "Expecting" or "Not expecting".
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if trace:
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heading = "Expecting" if matching else "Not expecting"
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# Start from the startstr, if specified.
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# If there's no startstr, set the initial state appropriately.
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matched = output.startswith(startstr) if startstr else (True if matching else False)
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if startstr and trace:
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print >> sys.stderr, "%s start string: %s" % (heading, startstr)
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print >> sys.stderr, "Matched" if matched else "Not matched"
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print >> sys.stderr
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# Look for sub strings, if specified.
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keepgoing = matched if matching else not matched
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if substrs and keepgoing:
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for str in substrs:
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matched = output.find(str) != -1
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if trace:
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print >> sys.stderr, "%s sub string: %s" % (heading, str)
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print >> sys.stderr, "Matched" if matched else "Not matched"
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keepgoing = matched if matching else not matched
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if not keepgoing:
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break
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if trace:
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print >> sys.stderr
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# Search for regular expression patterns, if specified.
|
|
keepgoing = matched if matching else not matched
|
|
if patterns and keepgoing:
|
|
for pattern in patterns:
|
|
# Match Objects always have a boolean value of True.
|
|
matched = bool(re.search(pattern, output))
|
|
if trace:
|
|
print >> sys.stderr, "%s pattern: %s" % (heading, pattern)
|
|
print >> sys.stderr, "Matched" if matched else "Not matched"
|
|
keepgoing = matched if matching else not matched
|
|
if not keepgoing:
|
|
break
|
|
if trace:
|
|
print >> sys.stderr
|
|
|
|
self.assertTrue(matched if matching else not matched,
|
|
msg if msg else CMD_MSG(str, exe))
|
|
|
|
def invoke(self, obj, name, trace=False):
|
|
"""Use reflection to call a method dynamically with no argument."""
|
|
trace = (True if traceAlways else trace)
|
|
|
|
method = getattr(obj, name)
|
|
import inspect
|
|
self.assertTrue(inspect.ismethod(method),
|
|
name + "is a method name of object: " + str(obj))
|
|
result = method()
|
|
if trace:
|
|
print >> sys.stderr, str(method) + ":", result
|
|
return result
|
|
|
|
def breakAfterLaunch(self, process, func, trace=False):
|
|
"""
|
|
Perform some dancees after LaunchProcess() to break at func name.
|
|
|
|
Return True if we can successfully break at the func name in due time.
|
|
"""
|
|
trace = (True if traceAlways else trace)
|
|
|
|
count = 0
|
|
while True:
|
|
# The stop reason of the thread should be breakpoint.
|
|
thread = process.GetThreadAtIndex(0)
|
|
SR = thread.GetStopReason()
|
|
if trace:
|
|
print >> sys.stderr, "StopReason =", StopReasonString(SR)
|
|
|
|
if SR == StopReasonEnum("Breakpoint"):
|
|
frame = thread.GetFrameAtIndex(0)
|
|
name = frame.GetFunction().GetName()
|
|
if trace:
|
|
print >> sys.stderr, "function =", name
|
|
if (name == func):
|
|
# We got what we want; now break out of the loop.
|
|
return True
|
|
|
|
# The inferior is in a transient state; continue the process.
|
|
time.sleep(1.0)
|
|
if trace:
|
|
print >> sys.stderr, "Continuing the process:", process
|
|
process.Continue()
|
|
|
|
count = count + 1
|
|
if count == 15:
|
|
if trace:
|
|
print >> sys.stderr, "Reached 15 iterations, giving up..."
|
|
# Enough iterations already, break out of the loop.
|
|
return False
|
|
|
|
# End of while loop.
|
|
|
|
|
|
def buildDefault(self, architecture=None, compiler=None, dictionary=None):
|
|
"""Platform specific way to build the default binaries."""
|
|
module = __import__(sys.platform)
|
|
if not module.buildDefault(architecture, compiler, dictionary):
|
|
raise Exception("Don't know how to build default binary")
|
|
|
|
def buildDsym(self, architecture=None, compiler=None, dictionary=None):
|
|
"""Platform specific way to build binaries with dsym info."""
|
|
module = __import__(sys.platform)
|
|
if not module.buildDsym(architecture, compiler, dictionary):
|
|
raise Exception("Don't know how to build binary with dsym")
|
|
|
|
def buildDwarf(self, architecture=None, compiler=None, dictionary=None):
|
|
"""Platform specific way to build binaries with dwarf maps."""
|
|
module = __import__(sys.platform)
|
|
if not module.buildDwarf(architecture, compiler, dictionary):
|
|
raise Exception("Don't know how to build binary with dwarf")
|
|
|
|
def DebugSBValue(self, frame, val):
|
|
"""Debug print a SBValue object, if traceAlways is True."""
|
|
if not traceAlways:
|
|
return
|
|
|
|
err = sys.stderr
|
|
err.write(val.GetName() + ":\n")
|
|
err.write('\t' + "TypeName -> " + val.GetTypeName() + '\n')
|
|
err.write('\t' + "ByteSize -> " + str(val.GetByteSize()) + '\n')
|
|
err.write('\t' + "NumChildren -> " + str(val.GetNumChildren()) + '\n')
|
|
err.write('\t' + "Value -> " + str(val.GetValue(frame)) + '\n')
|
|
err.write('\t' + "Summary -> " + str(val.GetSummary(frame)) + '\n')
|
|
err.write('\t' + "IsPtrType -> " + str(val.TypeIsPtrType()) + '\n')
|
|
err.write('\t' + "Location -> " + val.GetLocation(frame) + '\n')
|
|
|