53c5ddf0d7
This test is incorrect as functions that return lldb.SBThread objects never return None, they just return lldb.SBThread objects that contain invalid opaque classes. llvm-svn: 177416
165 lines
7.4 KiB
Python
165 lines
7.4 KiB
Python
"""
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Test some SBValue APIs.
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"""
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import os, time
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import re
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import unittest2
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import lldb, lldbutil
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from lldbtest import *
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class ChangeValueAPITestCase(TestBase):
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mydir = os.path.join("python_api", "value", "change_values")
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@unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin")
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@python_api_test
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@dsym_test
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def test_change_value_with_dsym(self):
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"""Exercise the SBValue::SetValueFromCString API."""
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d = {'EXE': self.exe_name}
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self.buildDsym(dictionary=d)
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self.setTearDownCleanup(dictionary=d)
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self.change_value_api(self.exe_name)
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@python_api_test
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@dwarf_test
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def test_change_value_with_dwarf(self):
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"""Exercise the SBValue::SetValueFromCString API."""
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d = {'EXE': self.exe_name}
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self.buildDwarf(dictionary=d)
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self.setTearDownCleanup(dictionary=d)
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self.change_value_api(self.exe_name)
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def setUp(self):
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# Call super's setUp().
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TestBase.setUp(self)
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# We'll use the test method name as the exe_name.
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self.exe_name = self.testMethodName
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# Find the line number to of function 'c'.
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self.line = line_number('main.c', '// Stop here and set values')
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self.check_line = line_number('main.c', '// Stop here and check values')
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self.end_line = line_number ('main.c', '// Set a breakpoint here at the end')
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def change_value_api(self, exe_name):
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"""Exercise some SBValue APIs."""
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exe = os.path.join(os.getcwd(), exe_name)
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# Create a target by the debugger.
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target = self.dbg.CreateTarget(exe)
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self.assertTrue(target, VALID_TARGET)
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# Create the breakpoint inside function 'main'.
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breakpoint = target.BreakpointCreateByLocation('main.c', self.line)
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self.assertTrue(breakpoint, VALID_BREAKPOINT)
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# Create the breakpoint inside the function 'main'
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check_breakpoint = target.BreakpointCreateByLocation('main.c', self.check_line)
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self.assertTrue(check_breakpoint, VALID_BREAKPOINT)
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# Create the breakpoint inside function 'main'.
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end_breakpoint = target.BreakpointCreateByLocation('main.c', self.end_line)
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self.assertTrue(end_breakpoint, VALID_BREAKPOINT)
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# Now launch the process, and do not stop at entry point.
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process = target.LaunchSimple(None, None, os.getcwd())
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self.assertTrue(process, PROCESS_IS_VALID)
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# Get Frame #0.
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self.assertTrue(process.GetState() == lldb.eStateStopped)
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thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonBreakpoint)
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self.assertTrue(thread.IsValid(), "There should be a thread stopped due to breakpoint condition")
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frame0 = thread.GetFrameAtIndex(0)
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self.assertTrue (frame0.IsValid(), "Got a valid frame.")
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# Get the val variable and change it:
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error = lldb.SBError()
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val_value = frame0.FindVariable ("val")
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self.assertTrue (val_value.IsValid(), "Got the SBValue for val")
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actual_value = val_value.GetValueAsSigned (error, 0);
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self.assertTrue (error.Success(), "Got a value from val")
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self.assertTrue (actual_value == 100, "Got the right value from val")
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result = val_value.SetValueFromCString ("12345")
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self.assertTrue (result, "Setting val returned True.")
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actual_value = val_value.GetValueAsSigned (error, 0);
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self.assertTrue (error.Success(), "Got a changed value from val")
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self.assertTrue (actual_value == 12345, "Got the right changed value from val")
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# Now check that we can set a structure element:
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mine_value = frame0.FindVariable ("mine")
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self.assertTrue (mine_value.IsValid(), "Got the SBValue for mine")
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mine_second_value = mine_value.GetChildMemberWithName ("second_val")
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self.assertTrue (mine_second_value.IsValid(), "Got second_val from mine")
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actual_value = mine_second_value.GetValueAsUnsigned (error, 0)
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self.assertTrue (error.Success(), "Got an unsigned value for second_val")
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self.assertTrue (actual_value == 5555)
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result = mine_second_value.SetValueFromCString ("98765")
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self.assertTrue (result, "Success setting mine.second_value.")
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actual_value = mine_second_value.GetValueAsSigned (error, 0);
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self.assertTrue (error.Success(), "Got a changed value from mine.second_val")
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self.assertTrue (actual_value == 98765, "Got the right changed value from mine.second_val")
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# Next do the same thing with the pointer version.
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ptr_value = frame0.FindVariable ("ptr")
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self.assertTrue (ptr_value.IsValid(), "Got the SBValue for ptr")
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ptr_second_value = ptr_value.GetChildMemberWithName ("second_val")
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self.assertTrue (ptr_second_value.IsValid(), "Got second_val from ptr")
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actual_value = ptr_second_value.GetValueAsUnsigned (error, 0)
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self.assertTrue (error.Success(), "Got an unsigned value for ptr->second_val")
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self.assertTrue (actual_value == 6666)
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result = ptr_second_value.SetValueFromCString ("98765")
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self.assertTrue (result, "Success setting ptr->second_value.")
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actual_value = ptr_second_value.GetValueAsSigned (error, 0);
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self.assertTrue (error.Success(), "Got a changed value from ptr->second_val")
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self.assertTrue (actual_value == 98765, "Got the right changed value from ptr->second_val")
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# gcc may set multiple locations for breakpoint
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breakpoint.SetEnabled(False)
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# Now continue, grab the stdout and make sure we changed the real values as well...
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process.Continue();
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self.assertTrue(process.GetState() == lldb.eStateStopped)
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thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonBreakpoint)
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self.assertTrue(thread.IsValid(), "There should be a thread stopped due to breakpoint condition")
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expected_value = "Val - 12345 Mine - 55, 98765, 55555555. Ptr - 66, 98765, 66666666"
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stdout = process.GetSTDOUT(1000)
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self.assertTrue (expected_value in stdout, "STDOUT showed changed values.")
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# Finally, change the stack pointer to 0, and we should not make it to our end breakpoint.
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frame0 = thread.GetFrameAtIndex(0)
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self.assertTrue (frame0.IsValid(), "Second time: got a valid frame.")
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sp_value = frame0.FindValue ("sp", lldb.eValueTypeRegister);
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self.assertTrue (sp_value.IsValid(), "Got a stack pointer value")
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result = sp_value.SetValueFromCString("1")
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self.assertTrue (result, "Setting sp returned true.")
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actual_value = sp_value.GetValueAsUnsigned (error, 0)
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self.assertTrue (error.Success(), "Got a changed value for sp")
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self.assertTrue (actual_value == 1, "Got the right changed value for sp.")
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# Boundary condition test the SBValue.CreateValueFromExpression() API.
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# LLDB should not crash!
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nosuchval = mine_value.CreateValueFromExpression(None, None)
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process.Continue()
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self.assertTrue(process.GetState() == lldb.eStateStopped)
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thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonBreakpoint)
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self.assertTrue(thread == None, "We should not have managed to hit our second breakpoint with sp == 1")
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process.Kill()
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if __name__ == '__main__':
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import atexit
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lldb.SBDebugger.Initialize()
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atexit.register(lambda: lldb.SBDebugger.Terminate())
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unittest2.main()
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