forked from OSchip/llvm-project
127 lines
4.6 KiB
Python
127 lines
4.6 KiB
Python
"""
|
|
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):
|
|
# Call super's setUp().
|
|
TestBase.setUp(self)
|
|
# Find the line number to break inside main().
|
|
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.IsValid(), VALID_TARGET)
|
|
|
|
# Launch the process, and do not stop at the entry point.
|
|
process = target.LaunchProcess([], [], os.ctermid(), 0, False)
|
|
|
|
#
|
|
# Exercise Python APIs to display source lines.
|
|
#
|
|
|
|
# Create the filespec for 'main.c'.
|
|
filespec = lldb.SBFileSpec('main.c', False)
|
|
source_mgr = self.dbg.GetSourceManager()
|
|
# Use a string stream as the destination.
|
|
stream = lldb.SBStream()
|
|
source_mgr.DisplaySourceLinesWithLineNumbers(filespec,
|
|
self.line,
|
|
2, # context before
|
|
2, # context after
|
|
"=>", # prefix for current line
|
|
stream)
|
|
|
|
# 2
|
|
# 3 int main(int argc, char const *argv[]) {
|
|
# 4 => printf("Hello world.\n"); // Set break point at this line.
|
|
# 5 return 0;
|
|
# 6 }
|
|
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)
|
|
|
|
# The stop reason of the thread should be breakpoint.
|
|
self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
|
|
substrs = ['state is stopped',
|
|
'main.c',
|
|
'stop reason = breakpoint'])
|
|
|
|
# Display some source code.
|
|
self.expect("list -f main.c -l %d" % self.line, SOURCE_DISPLAYED_CORRECTLY,
|
|
substrs = ['Hello world'])
|
|
|
|
# Read the main.c file content.
|
|
with open('main.c', 'r') as f:
|
|
original_content = f.read()
|
|
print "original content:", original_content
|
|
|
|
# Modify the in-memory copy of the original source code.
|
|
new_content = original_content.replace('Hello world', 'Hello lldb', 1)
|
|
|
|
# This is the function to restore the original content.
|
|
def restore_file():
|
|
with open('main.c', 'w') as f:
|
|
f.write(original_content)
|
|
with open('main.c', 'r') as f:
|
|
print "content restored to:", f.read()
|
|
|
|
# Modify the source code file.
|
|
with open('main.c', 'w') as f:
|
|
f.write(new_content)
|
|
print "new content:", new_content
|
|
# Add teardown hook to restore the file to the original content.
|
|
self.addTearDownHook(restore_file)
|
|
|
|
# Display the source code again. We should see the updated line.
|
|
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()
|