TestSourceManager.py [plain text]
"""
Test lldb core component: SourceManager.
Test cases:
o test_display_source_python:
Test display of source using the SBSourceManager API.
o test_modify_source_file_while_debugging:
Test the caching mechanism of the source manager.
"""
import unittest2
import lldb
from lldbtest import *
class SourceManagerTestCase(TestBase):
mydir = "source-manager"
def setUp(self):
TestBase.setUp(self)
self.line = line_number('main.c', '// Set break point at this line.')
@python_api_test
def test_display_source_python(self):
"""Test display of source using the SBSourceManager API."""
self.buildDefault()
self.display_source_python()
def test_modify_source_file_while_debugging(self):
"""Modify a source file while debugging the executable."""
self.buildDefault()
self.modify_source_file_while_debugging()
def display_source_python(self):
"""Display source using the SBSourceManager API."""
exe = os.path.join(os.getcwd(), "a.out")
self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
target = self.dbg.CreateTarget(exe)
self.assertTrue(target, VALID_TARGET)
process = target.LaunchSimple(None, None, os.getcwd())
filespec = lldb.SBFileSpec('main.c', False)
source_mgr = self.dbg.GetSourceManager()
stream = lldb.SBStream()
source_mgr.DisplaySourceLinesWithLineNumbers(filespec,
self.line,
2, 2, "=>", stream)
self.expect(stream.GetData(), "Source code displayed correctly",
exe=False,
patterns = ['=> %d.*Hello world' % self.line])
def modify_source_file_while_debugging(self):
"""Modify a source file while debugging the executable."""
exe = os.path.join(os.getcwd(), "a.out")
self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
self.expect("breakpoint set -f main.c -l %d" % self.line,
BREAKPOINT_CREATED,
startstr = "Breakpoint created: 1: file ='main.c', line = %d, locations = 1" %
self.line)
self.runCmd("run", RUN_SUCCEEDED)
self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
substrs = ['stopped',
'main.c:%d' % self.line,
'stop reason = breakpoint'])
self.expect("list -f main.c -l %d" % self.line, SOURCE_DISPLAYED_CORRECTLY,
substrs = ['Hello world'])
self.runCmd("list -l %d -c 3 -b" % self.line)
output = self.res.GetOutput().splitlines()[0]
import re
m = re.search('^\[(\d+)\].*// Set break point at this line.', output)
if not m:
self.fail("Fail to display source level breakpoints")
self.assertTrue(int(m.group(1)) > 0)
with open('main.c', 'r') as f:
original_content = f.read()
if self.TraceOn():
print "original content:", original_content
new_content = original_content.replace('Hello world', 'Hello lldb', 1)
def restore_file():
time.sleep(1)
with open('main.c', 'w') as f:
f.write(original_content)
if self.TraceOn():
with open('main.c', 'r') as f:
print "content restored to:", f.read()
os.utime('main.c', None)
if self.TraceOn():
print "os.path.getmtime() after restore:", os.path.getmtime('main.c')
with open('main.c', 'w') as f:
time.sleep(1)
f.write(new_content)
if self.TraceOn():
print "new content:", new_content
print "os.path.getmtime() after writing new content:", os.path.getmtime('main.c')
self.addTearDownHook(restore_file)
self.expect("list -f main.c -l %d" % self.line, SOURCE_DISPLAYED_CORRECTLY,
substrs = ['Hello lldb'])
if __name__ == '__main__':
import atexit
lldb.SBDebugger.Initialize()
atexit.register(lambda: lldb.SBDebugger.Terminate())
unittest2.main()