| """ |
| Test lldb target stop-hook mechanism to see whether it fires off correctly . |
| """ |
| |
| import os |
| import unittest2 |
| import lldb |
| import pexpect |
| from lldbtest import * |
| |
| class StopHookMechanismTestCase(TestBase): |
| |
| mydir = os.path.join("functionalities", "stop-hook") |
| |
| @unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin") |
| @dsym_test |
| def test_with_dsym(self): |
| """Test the stop-hook mechanism.""" |
| self.buildDsym() |
| self.stop_hook_firing() |
| |
| @dwarf_test |
| def test_with_dwarf(self): |
| """Test the stop-hook mechanism.""" |
| self.buildDwarf() |
| self.stop_hook_firing() |
| |
| def setUp(self): |
| # Call super's setUp(). |
| TestBase.setUp(self) |
| # Find the line numbers inside main.cpp. |
| self.begl = line_number('main.cpp', '// Set breakpoint here to test target stop-hook.') |
| self.endl = line_number('main.cpp', '// End of the line range for which stop-hook is to be run.') |
| self.correct_step_line = line_number ('main.cpp', '// We should stop here after stepping.') |
| self.line = line_number('main.cpp', '// Another breakpoint which is outside of the stop-hook range.') |
| |
| def stop_hook_firing(self): |
| """Test the stop-hook mechanism.""" |
| exe = os.path.join(os.getcwd(), "a.out") |
| prompt = "(lldb) " |
| add_prompt = "Enter your stop hook command(s). Type 'DONE' to end.\r\n> " |
| add_prompt1 = "\r\n> " |
| |
| # So that the child gets torn down after the test. |
| self.child = pexpect.spawn('%s %s %s' % (self.lldbHere, self.lldbOption, exe)) |
| child = self.child |
| # Turn on logging for what the child sends back. |
| if self.TraceOn(): |
| child.logfile_read = sys.stdout |
| |
| # Set the breakpoint, followed by the target stop-hook commands. |
| child.expect_exact(prompt) |
| child.sendline('breakpoint set -f main.cpp -l %d' % self.begl) |
| child.expect_exact(prompt) |
| child.sendline('breakpoint set -f main.cpp -l %d' % self.line) |
| child.expect_exact(prompt) |
| child.sendline('target stop-hook add -f main.cpp -l %d -e %d' % (self.begl, self.endl)) |
| child.expect_exact(add_prompt) |
| child.sendline('expr ptr') |
| child.expect_exact(add_prompt1) |
| child.sendline('DONE') |
| child.expect_exact(prompt) |
| child.sendline('target stop-hook list') |
| |
| # Now run the program, expect to stop at the the first breakpoint which is within the stop-hook range. |
| child.expect_exact(prompt) |
| child.sendline('run') |
| child.expect_exact(prompt) |
| child.sendline('thread step-over') |
| # Expecting to find the output emitted by the firing of our stop hook. |
| child.expect_exact('(void *) $') |
| # This is orthogonal to the main stop hook test, but this example shows a bug in |
| # CLANG where the line table entry for the "return -1" actually includes some code |
| # from the other branch of the if/else, so we incorrectly stop at the "return -1" line. |
| # I fixed that in lldb and I'm sticking in a test here because I don't want to have to |
| # make up a whole nother test case for it. |
| child.sendline('frame info') |
| child.expect_exact('at main.cpp:%d'%self.correct_step_line) |
| |
| # Now continue the inferior, we'll stop at another breakpoint which is outside the stop-hook range. |
| child.sendline('process continue') |
| child.expect_exact('// Another breakpoint which is outside of the stop-hook range.') |
| #self.DebugPExpect(child) |
| child.sendline('thread step-over') |
| child.expect_exact('// Another breakpoint which is outside of the stop-hook range.') |
| #self.DebugPExpect(child) |
| # Verify that the 'Stop Hooks' mechanism is NOT BEING fired off. |
| self.expect(child.before, exe=False, matching=False, |
| substrs = ['(void *) $']) |
| |
| |
| if __name__ == '__main__': |
| import atexit |
| lldb.SBDebugger.Initialize() |
| atexit.register(lambda: lldb.SBDebugger.Terminate()) |
| unittest2.main() |