83 lines · python
1"""2Use lldb Python API to make sure the dynamic checkers are doing their jobs.3"""4 5 6import lldb7from lldbsuite.test.decorators import *8from lldbsuite.test.lldbtest import *9from lldbsuite.test import lldbutil10 11 12class ObjCCheckerTestCase(TestBase):13 NO_DEBUG_INFO_TESTCASE = True14 15 def setUp(self):16 # Call super's setUp().17 TestBase.setUp(self)18 19 # Find the line number to break for main.c.20 self.source_name = "main.m"21 22 @add_test_categories(["pyapi"])23 def test_objc_checker(self):24 """Test that checkers catch unrecognized selectors"""25 if self.getArchitecture() == "i386":26 self.skipTest("requires Objective-C 2.0 runtime")27 28 self.build()29 exe = self.getBuildArtifact("a.out")30 31 # Create a target from the debugger.32 33 target = self.dbg.CreateTarget(exe)34 self.assertTrue(target, VALID_TARGET)35 36 # Set up our breakpoints:37 38 main_bkpt = target.BreakpointCreateBySourceRegex(39 "Set a breakpoint here.", lldb.SBFileSpec(self.source_name)40 )41 self.assertTrue(42 main_bkpt and main_bkpt.GetNumLocations() == 1, VALID_BREAKPOINT43 )44 45 # Now launch the process, and do not stop at the entry point.46 process = target.LaunchSimple(None, None, self.get_process_working_directory())47 48 self.assertState(process.GetState(), lldb.eStateStopped, PROCESS_STOPPED)49 50 threads = lldbutil.get_threads_stopped_at_breakpoint(process, main_bkpt)51 self.assertEqual(len(threads), 1)52 thread = threads[0]53 54 #55 # The class Simple doesn't have a count method. Make sure that we don't56 # actually try to send count but catch it as an unrecognized selector.57 58 frame = thread.GetFrameAtIndex(0)59 expr_value = frame.EvaluateExpression("(int) [my_simple count]", False)60 expr_error = expr_value.GetError()61 62 self.assertTrue(expr_error.Fail())63 64 # Make sure the call produced no NSLog stdout.65 stdout = process.GetSTDOUT(100)66 self.assertTrue(stdout is None or (len(stdout) == 0))67 68 # Make sure the error is helpful:69 err_string = expr_error.GetCString()70 self.assertIn("selector", err_string)71 72 #73 # Check that we correctly insert the checker for an74 # ObjC method with the struct return convention.75 # Getting this wrong would cause us to call the checker76 # with the wrong arguments, and the checker would crash77 # So I'm just checking "expression runs successfully" here:78 #79 expr_value = frame.EvaluateExpression("[my_simple getBigStruct]", False)80 expr_error = expr_value.GetError()81 82 self.assertSuccess(expr_error)83