| """ |
| Test some SBValue APIs. |
| """ |
| |
| import os, time |
| import re |
| import unittest2 |
| import lldb, lldbutil |
| from lldbtest import * |
| |
| class ChangeValueAPITestCase(TestBase): |
| |
| mydir = os.path.join("python_api", "value", "change_values") |
| |
| @unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin") |
| @python_api_test |
| @dsym_test |
| def test_change_value_with_dsym(self): |
| """Exercise the SBValue::SetValueFromCString API.""" |
| d = {'EXE': self.exe_name} |
| self.buildDsym(dictionary=d) |
| self.setTearDownCleanup(dictionary=d) |
| self.change_value_api(self.exe_name) |
| |
| @python_api_test |
| @dwarf_test |
| def test_change_value_with_dwarf(self): |
| """Exercise the SBValue::SetValueFromCString API.""" |
| d = {'EXE': self.exe_name} |
| self.buildDwarf(dictionary=d) |
| self.setTearDownCleanup(dictionary=d) |
| self.change_value_api(self.exe_name) |
| |
| def setUp(self): |
| # Call super's setUp(). |
| TestBase.setUp(self) |
| # We'll use the test method name as the exe_name. |
| self.exe_name = self.testMethodName |
| # Find the line number to of function 'c'. |
| self.line = line_number('main.c', '// Stop here and set values') |
| self.end_line = line_number ('main.c', '// Set a breakpoint here at the end') |
| |
| def change_value_api(self, exe_name): |
| """Exercise some SBValue APIs.""" |
| exe = os.path.join(os.getcwd(), exe_name) |
| |
| # Create a target by the debugger. |
| target = self.dbg.CreateTarget(exe) |
| self.assertTrue(target, VALID_TARGET) |
| |
| # Create the breakpoint inside function 'main'. |
| breakpoint = target.BreakpointCreateByLocation('main.c', self.line) |
| self.assertTrue(breakpoint, VALID_BREAKPOINT) |
| |
| # Create the breakpoint inside function 'main'. |
| end_breakpoint = target.BreakpointCreateByLocation('main.c', self.end_line) |
| self.assertTrue(end_breakpoint, VALID_BREAKPOINT) |
| |
| # Now launch the process, and do not stop at entry point. |
| process = target.LaunchSimple(None, None, os.getcwd()) |
| self.assertTrue(process, PROCESS_IS_VALID) |
| |
| # Get Frame #0. |
| self.assertTrue(process.GetState() == lldb.eStateStopped) |
| thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonBreakpoint) |
| self.assertTrue(thread != None, "There should be a thread stopped due to breakpoint condition") |
| frame0 = thread.GetFrameAtIndex(0) |
| self.assertTrue (frame0.IsValid(), "Got a valid frame.") |
| |
| # Get the val variable and change it: |
| error = lldb.SBError() |
| |
| val_value = frame0.FindVariable ("val") |
| self.assertTrue (val_value.IsValid(), "Got the SBValue for val") |
| actual_value = val_value.GetValueAsSigned (error, 0); |
| self.assertTrue (error.Success(), "Got a value from val") |
| self.assertTrue (actual_value == 100, "Got the right value from val") |
| |
| result = val_value.SetValueFromCString ("12345") |
| self.assertTrue (result, "Setting val returned True.") |
| actual_value = val_value.GetValueAsSigned (error, 0); |
| self.assertTrue (error.Success(), "Got a changed value from val") |
| self.assertTrue (actual_value == 12345, "Got the right changed value from val") |
| |
| # Now check that we can set a structure element: |
| |
| mine_value = frame0.FindVariable ("mine") |
| self.assertTrue (mine_value.IsValid(), "Got the SBValue for mine") |
| |
| mine_second_value = mine_value.GetChildMemberWithName ("second_val") |
| self.assertTrue (mine_second_value.IsValid(), "Got second_val from mine") |
| actual_value = mine_second_value.GetValueAsUnsigned (error, 0) |
| self.assertTrue (error.Success(), "Got an unsigned value for second_val") |
| self.assertTrue (actual_value == 5555) |
| |
| result = mine_second_value.SetValueFromCString ("98765") |
| self.assertTrue (result, "Success setting mine.second_value.") |
| actual_value = mine_second_value.GetValueAsSigned (error, 0); |
| self.assertTrue (error.Success(), "Got a changed value from mine.second_val") |
| self.assertTrue (actual_value == 98765, "Got the right changed value from mine.second_val") |
| |
| # Next do the same thing with the pointer version. |
| ptr_value = frame0.FindVariable ("ptr") |
| self.assertTrue (ptr_value.IsValid(), "Got the SBValue for ptr") |
| |
| ptr_second_value = ptr_value.GetChildMemberWithName ("second_val") |
| self.assertTrue (ptr_second_value.IsValid(), "Got second_val from ptr") |
| actual_value = ptr_second_value.GetValueAsUnsigned (error, 0) |
| self.assertTrue (error.Success(), "Got an unsigned value for ptr->second_val") |
| self.assertTrue (actual_value == 6666) |
| |
| result = ptr_second_value.SetValueFromCString ("98765") |
| self.assertTrue (result, "Success setting ptr->second_value.") |
| actual_value = ptr_second_value.GetValueAsSigned (error, 0); |
| self.assertTrue (error.Success(), "Got a changed value from ptr->second_val") |
| self.assertTrue (actual_value == 98765, "Got the right changed value from ptr->second_val") |
| |
| # Now step, grab the stdout and make sure we changed the real values as well... |
| thread.StepOver() |
| expected_value = "Val - 12345 Mine - 55, 98765, 55555555. Ptr - 66, 98765, 66666666" |
| stdout = process.GetSTDOUT(1000) |
| self.assertTrue (expected_value in stdout, "STDOUT showed changed values.") |
| |
| # Finally, change the stack pointer to 0, and we should not make it to our end breakpoint. |
| frame0 = thread.GetFrameAtIndex(0) |
| self.assertTrue (frame0.IsValid(), "Second time: got a valid frame.") |
| sp_value = frame0.FindValue ("sp", lldb.eValueTypeRegister); |
| self.assertTrue (sp_value.IsValid(), "Got a stack pointer value") |
| result = sp_value.SetValueFromCString("1") |
| self.assertTrue (result, "Setting sp returned true.") |
| actual_value = sp_value.GetValueAsUnsigned (error, 0) |
| self.assertTrue (error.Success(), "Got a changed value for sp") |
| self.assertTrue (actual_value == 1, "Got the right changed value for sp.") |
| |
| # Boundary condition test the SBValue.CreateValueFromExpression() API. |
| # LLDB should not crash! |
| nosuchval = mine_value.CreateValueFromExpression(None, None) |
| |
| process.Continue() |
| |
| self.assertTrue(process.GetState() == lldb.eStateStopped) |
| thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonBreakpoint) |
| self.assertTrue(thread == None, "We should not have managed to hit our second breakpoint with sp == 1") |
| |
| process.Kill() |
| |
| if __name__ == '__main__': |
| import atexit |
| lldb.SBDebugger.Initialize() |
| atexit.register(lambda: lldb.SBDebugger.Terminate()) |
| unittest2.main() |
