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"""
Use lldb Python API to make sure the dynamic checkers are doing their jobs.
"""
import lldb
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil
class ObjCCheckerTestCase(TestBase):
mydir = TestBase.compute_mydir(__file__)
NO_DEBUG_INFO_TESTCASE = True
def setUp(self):
# Call super's setUp().
TestBase.setUp(self)
# Find the line number to break for main.c.
self.source_name = 'main.m'
@skipUnlessDarwin
@add_test_categories(['pyapi'])
def test_objc_checker(self):
"""Test that checkers catch unrecognized selectors"""
if self.getArchitecture() == 'i386':
self.skipTest("requires Objective-C 2.0 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.assertTrue(process.GetState() == lldb.eStateStopped,
PROCESS_STOPPED)
threads = lldbutil.get_threads_stopped_at_breakpoint(
process, main_bkpt)
self.assertTrue(len(threads) == 1)
thread = threads[0]
#
# The class Simple doesn't have a count method. Make sure that we don't
# actually try to send count but catch it as an unrecognized selector.
frame = thread.GetFrameAtIndex(0)
expr_value = frame.EvaluateExpression("(int) [my_simple count]", False)
expr_error = expr_value.GetError()
self.assertTrue(expr_error.Fail())
# Make sure the call produced no NSLog stdout.
stdout = process.GetSTDOUT(100)
self.assertTrue(stdout is None or (len(stdout) == 0))
# Make sure the error is helpful:
err_string = expr_error.GetCString()
self.assertTrue("selector" in err_string)
#
# Check that we correctly insert the checker for an
# ObjC method with the struct return convention.
# Getting this wrong would cause us to call the checker
# with the wrong arguments, and the checker would crash
# So I'm just checking "expression runs successfully" here:
#
expr_value = frame.EvaluateExpression("[my_simple getBigStruct]", False)
expr_error = expr_value.GetError()
self.assertTrue(expr_error.Success())
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