1 2import lldb 3from lldbsuite.test.decorators import * 4from lldbsuite.test.lldbtest import * 5from lldbsuite.test import lldbutil 6 7class ValueAPIEmptyClassTestCase(TestBase): 8 9 mydir = TestBase.compute_mydir(__file__) 10 11 @add_test_categories(['pyapi']) 12 def test(self): 13 self.build() 14 exe = self.getBuildArtifact("a.out") 15 line = line_number('main.cpp', '// Break at this line') 16 17 # Create a target by the debugger. 18 target = self.dbg.CreateTarget(exe) 19 self.assertTrue(target, VALID_TARGET) 20 21 # Create the breakpoint inside function 'main'. 22 breakpoint = target.BreakpointCreateByLocation('main.cpp', line) 23 self.assertTrue(breakpoint, VALID_BREAKPOINT) 24 25 # Now launch the process, and do not stop at entry point. 26 process = target.LaunchSimple( 27 None, None, self.get_process_working_directory()) 28 self.assertTrue(process, PROCESS_IS_VALID) 29 30 # Get Frame #0. 31 self.assertEquals(process.GetState(), lldb.eStateStopped) 32 thread = lldbutil.get_stopped_thread( 33 process, lldb.eStopReasonBreakpoint) 34 self.assertTrue( 35 thread.IsValid(), 36 "There should be a thread stopped due to breakpoint condition") 37 frame0 = thread.GetFrameAtIndex(0) 38 39 # Verify that we can access to a frame variable with an empty class type 40 e = frame0.FindVariable('e') 41 self.assertTrue(e.IsValid(), VALID_VARIABLE) 42 self.DebugSBValue(e) 43 self.assertEqual(e.GetNumChildren(), 0) 44 45 # Verify that we can acces to a frame variable what is a pointer to an 46 # empty class 47 ep = frame0.FindVariable('ep') 48 self.assertTrue(ep.IsValid(), VALID_VARIABLE) 49 self.DebugSBValue(ep) 50 51 # Verify that we can dereference a pointer to an empty class 52 epd = ep.Dereference() 53 self.assertTrue(epd.IsValid(), VALID_VARIABLE) 54 self.DebugSBValue(epd) 55 self.assertEqual(epd.GetNumChildren(), 0) 56 57