llvm-project/lldb/test/API/lang/objc/ivar-IMP/TestObjCiVarIMP.py
Jonas Devlieghere ce825e4674
[lldb] Add assertState function to the API test suite
Add a function to make it easier to debug a test failure caused by an
unexpected state.

Currently, tests are using assertEqual which results in a cryptic error
message: "AssertionError: 5 != 10". Even when a test provides a message
to make it clear why a particular state is expected, you still have to
figure out which of the two was the expected state, and what the other
value corresponds to.

We have a function in lldbutil that helps you convert the state number
into a user readable string. This patch adds a wrapper around
assertEqual specifically for comparing states and reporting better error
messages.

The aforementioned error message now looks like this: "AssertionError:
stopped (5) != exited (10)". If the user provided a message, that
continues to get printed as well.

Differential revision: https://reviews.llvm.org/D127355
2022-06-08 16:16:38 -07:00

48 lines
1.4 KiB
Python

"""
Test that dynamically discovered ivars of type IMP do not crash LLDB
"""
import lldb
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil
class ObjCiVarIMPTestCase(TestBase):
mydir = TestBase.compute_mydir(__file__)
@skipIf(archs=['i386']) # objc file does not build for i386
@no_debug_info_test
def test_imp_ivar_type(self):
"""Test that dynamically discovered ivars of type IMP do not crash LLDB"""
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 breakpoint
bkpt = lldbutil.run_break_set_by_source_regexp(self, "break here")
# 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)
self.expect(
'frame variable --ptr-depth=1 --show-types -d run -- object',
substrs=[
'(MyClass *) object = 0x',
'(void *) myImp = 0x'])
self.expect(
'disassemble --start-address `((MyClass*)object)->myImp`',
substrs=['-[MyClass init]'])