| """ |
| Use lldb Python API to verify that expression evaluation for property references uses the correct getters and setters |
| """ |
| |
| |
| import lldb |
| from lldbsuite.test.decorators import * |
| from lldbsuite.test.lldbtest import * |
| from lldbsuite.test import lldbutil |
| |
| |
| class ObjCPropertyTestCase(TestBase): |
| def setUp(self): |
| # Call super's setUp(). |
| TestBase.setUp(self) |
| |
| # Find the line number to break for main.c. |
| self.source_name = "main.m" |
| |
| @add_test_categories(["pyapi"]) |
| def test_objc_properties(self): |
| """Test that expr uses the correct property getters and setters""" |
| if self.getArchitecture() == "i386": |
| self.skipTest("requires modern objc runtime") |
| |
| self.build() |
| exe = self.getBuildArtifact("a.out") |
| |
| # Create a target from the debugger. |
| |
| target = self.dbg.CreateTarget(exe) |
| self.assertTrue(target, VALID_TARGET) |
| |
| # Set up our breakpoints: |
| |
| main_bkpt = target.BreakpointCreateBySourceRegex( |
| "Set a breakpoint here.", lldb.SBFileSpec(self.source_name) |
| ) |
| self.assertTrue( |
| main_bkpt and main_bkpt.GetNumLocations() == 1, VALID_BREAKPOINT |
| ) |
| |
| # Now launch the process, and do not stop at the entry point. |
| process = target.LaunchSimple(None, None, self.get_process_working_directory()) |
| |
| self.assertState(process.GetState(), lldb.eStateStopped, PROCESS_STOPPED) |
| |
| threads = lldbutil.get_threads_stopped_at_breakpoint(process, main_bkpt) |
| self.assertEquals(len(threads), 1) |
| thread = threads[0] |
| frame = thread.GetFrameAtIndex(0) |
| |
| mine = frame.FindVariable("mine") |
| self.assertTrue(mine.IsValid()) |
| access_count = mine.GetChildMemberWithName("_access_count") |
| self.assertTrue(access_count.IsValid()) |
| start_access_count = access_count.GetValueAsUnsigned(123456) |
| self.assertNotEqual(start_access_count, 123456) |
| |
| # |
| # The first set of tests test calling the getter & setter of |
| # a property that actually only has a getter & setter and no |
| # @property. |
| # |
| nonexistant_value = frame.EvaluateExpression("mine.nonexistantInt", False) |
| nonexistant_error = nonexistant_value.GetError() |
| self.assertSuccess(nonexistant_error) |
| nonexistant_int = nonexistant_value.GetValueAsUnsigned(123456) |
| self.assertEquals(nonexistant_int, 6) |
| |
| # Calling the getter function would up the access count, so make sure |
| # that happened. |
| |
| new_access_count = access_count.GetValueAsUnsigned(123456) |
| self.assertEquals(new_access_count - start_access_count, 1) |
| start_access_count = new_access_count |
| |
| # |
| # Now call the setter, then make sure that |
| nonexistant_change = frame.EvaluateExpression("mine.nonexistantInt = 10", False) |
| nonexistant_error = nonexistant_change.GetError() |
| self.assertSuccess(nonexistant_error) |
| |
| # Calling the setter function would up the access count, so make sure |
| # that happened. |
| |
| new_access_count = access_count.GetValueAsUnsigned(123456) |
| self.assertEquals(new_access_count - start_access_count, 1) |
| start_access_count = new_access_count |
| |
| # |
| # Now we call the getter of a property that is backed by an ivar, |
| # make sure it works and that we actually update the backing ivar. |
| # |
| |
| backed_value = frame.EvaluateExpression("mine.backedInt", False) |
| backed_error = backed_value.GetError() |
| self.assertSuccess(backed_error) |
| backing_value = mine.GetChildMemberWithName("_backedInt") |
| self.assertTrue(backing_value.IsValid()) |
| self.assertEqual( |
| backed_value.GetValueAsUnsigned(12345), |
| backing_value.GetValueAsUnsigned(23456), |
| ) |
| |
| value_from_typedef = frame.EvaluateExpression("typedefd.backedInt", False) |
| self.assertSuccess(value_from_typedef.GetError()) |
| self.assertEqual( |
| value_from_typedef.GetValueAsUnsigned(12345), |
| backing_value.GetValueAsUnsigned(23456), |
| ) |
| |
| unbacked_value = frame.EvaluateExpression("mine.unbackedInt", False) |
| unbacked_error = unbacked_value.GetError() |
| self.assertSuccess(unbacked_error) |
| |
| idWithProtocol_value = frame.EvaluateExpression("mine.idWithProtocol", False) |
| idWithProtocol_error = idWithProtocol_value.GetError() |
| self.assertSuccess(idWithProtocol_error) |
| self.assertEquals(idWithProtocol_value.GetTypeName(), "id") |
| |
| # Make sure that class property getter works as expected |
| value = frame.EvaluateExpression("BaseClass.classInt", False) |
| self.assertSuccess(value.GetError()) |
| self.assertEquals(value.GetValueAsUnsigned(11111), 123) |
| |
| # Make sure that class property setter works as expected |
| value = frame.EvaluateExpression("BaseClass.classInt = 234", False) |
| self.assertSuccess(value.GetError()) |
| |
| # Verify that setter above actually worked |
| value = frame.EvaluateExpression("BaseClass.classInt", False) |
| self.assertSuccess(value.GetError()) |
| self.assertEquals(value.GetValueAsUnsigned(11111), 234) |
| |
| # Test that accessing two distinct class and instance properties that |
| # share the same name works. |
| self.expect_expr("mine.propConflict", result_value="4") |
| self.expect_expr("BaseClass.propConflict", result_value="6") |
