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Diffstat (limited to 'packages/Python/lldbsuite/test/python_api/value/change_values/TestChangeValueAPI.py')
-rw-r--r-- | packages/Python/lldbsuite/test/python_api/value/change_values/TestChangeValueAPI.py | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/packages/Python/lldbsuite/test/python_api/value/change_values/TestChangeValueAPI.py b/packages/Python/lldbsuite/test/python_api/value/change_values/TestChangeValueAPI.py new file mode 100644 index 000000000000..77aefe05be46 --- /dev/null +++ b/packages/Python/lldbsuite/test/python_api/value/change_values/TestChangeValueAPI.py @@ -0,0 +1,148 @@ +""" +Test some SBValue APIs. +""" + +from __future__ import print_function + + + +import os, time +import re +import lldb +import lldbsuite.test.lldbutil as lldbutil +from lldbsuite.test.lldbtest import * + +class ChangeValueAPITestCase(TestBase): + + mydir = TestBase.compute_mydir(__file__) + + 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.check_line = line_number('main.c', '// Stop here and check values') + self.end_line = line_number ('main.c', '// Set a breakpoint here at the end') + + @expectedFailureWindows("llvm.org/pr24772") + @add_test_categories(['pyapi']) + def test_change_value(self): + """Exercise the SBValue::SetValueFromCString API.""" + d = {'EXE': self.exe_name} + self.build(dictionary=d) + self.setTearDownCleanup(dictionary=d) + exe = os.path.join(os.getcwd(), self.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 the function 'main' + check_breakpoint = target.BreakpointCreateByLocation('main.c', self.check_line) + self.assertTrue(check_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, self.get_process_working_directory()) + 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.IsValid(), "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") + + # gcc may set multiple locations for breakpoint + breakpoint.SetEnabled(False) + + # Now continue, grab the stdout and make sure we changed the real values as well... + process.Continue(); + + self.assertTrue(process.GetState() == lldb.eStateStopped) + thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonBreakpoint) + self.assertTrue(thread.IsValid(), "There should be a thread stopped due to breakpoint condition") + + 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() |