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"""
Make sure the getting a variable path works and doesn't crash.
"""
import lldb
import lldbsuite.test.lldbutil as lldbutil
from lldbsuite.test.lldbtest import *
class TestVarPath(TestBase):
# If your test case doesn't stress debug info, then
# set this to true. That way it won't be run once for
# each debug info format.
NO_DEBUG_INFO_TESTCASE = True
def test_frame_var(self):
self.build()
self.do_test()
def verify_point(self, frame, var_name, var_typename, x_value, y_value):
v = frame.GetValueForVariablePath(var_name)
self.assertSuccess(v.GetError(), "Make sure we find '%s'" % (var_name))
self.assertEquals(v.GetType().GetName(), var_typename,
"Make sure '%s' has type '%s'" % (var_name, var_typename))
if '*' in var_typename:
valid_prefix = var_name + '->'
invalid_prefix = var_name + '.'
else:
valid_prefix = var_name + '.'
invalid_prefix = var_name + '->'
valid_x_path = valid_prefix + 'x'
valid_y_path = valid_prefix + 'y'
invalid_x_path = invalid_prefix + 'x'
invalid_y_path = invalid_prefix + 'y'
invalid_m_path = invalid_prefix + 'm'
v = frame.GetValueForVariablePath(valid_x_path)
self.assertSuccess(v.GetError(), "Make sure we find '%s'" % (valid_x_path))
self.assertEquals(v.GetValue(), str(x_value), "Make sure '%s' has a value of %i" % (valid_x_path, x_value))
self.assertEquals(v.GetType().GetName(), "int", "Make sure '%s' has type 'int'" % (valid_x_path))
v = frame.GetValueForVariablePath(invalid_x_path)
self.assertTrue(v.GetError().Fail(), "Make sure we don't find '%s'" % (invalid_x_path))
v = frame.GetValueForVariablePath(valid_y_path)
self.assertSuccess(v.GetError(), "Make sure we find '%s'" % (valid_y_path))
self.assertEquals(v.GetValue(), str(y_value), "Make sure '%s' has a value of %i" % (valid_y_path, y_value))
self.assertEquals(v.GetType().GetName(), "int", "Make sure '%s' has type 'int'" % (valid_y_path))
v = frame.GetValueForVariablePath(invalid_y_path)
self.assertTrue(v.GetError().Fail(), "Make sure we don't find '%s'" % (invalid_y_path))
v = frame.GetValueForVariablePath(invalid_m_path)
self.assertTrue(v.GetError().Fail(), "Make sure we don't find '%s'" % (invalid_m_path))
def do_test(self):
(target, process, thread, bkpt) = lldbutil.run_to_source_breakpoint(
self, "// Set a breakpoint here", lldb.SBFileSpec("main.cpp"))
frame = thread.GetFrameAtIndex(0)
v = frame.GetValueForVariablePath('no_such_variable')
self.assertTrue(v.GetError().Fail(), "Make sure we don't find 'no_such_variable'")
# Test an instance
self.verify_point(frame, 'pt', 'Point', 1, 2)
# Test a pointer
self.verify_point(frame, 'pt_ptr', 'Point *', 3030, 4040)
# Test using a pointer as an array
self.verify_point(frame, 'pt_ptr[-1]', 'Point', 1010, 2020)
self.verify_point(frame, 'pt_ptr[0]', 'Point', 3030, 4040)
self.verify_point(frame, 'pt_ptr[1]', 'Point', 5050, 6060)
# Test arrays
v = frame.GetValueForVariablePath('points')
self.assertSuccess(v.GetError(), "Make sure we find 'points'")
self.verify_point(frame, 'points[0]', 'Point', 1010, 2020)
self.verify_point(frame, 'points[1]', 'Point', 3030, 4040)
self.verify_point(frame, 'points[2]', 'Point', 5050, 6060)
v = frame.GetValueForVariablePath('points[0]+5')
self.assertTrue(v.GetError().Fail(),
"Make sure we do not ignore characters between ']' and the end")
# Test a reference
self.verify_point(frame, 'pt_ref', 'Point &', 1, 2)
v = frame.GetValueForVariablePath('pt_sp')
self.assertSuccess(v.GetError(), "Make sure we find 'pt_sp'")
# Make sure we don't crash when looking for non existant child
# in type with synthetic children. This used to cause a crash.
v = frame.GetValueForVariablePath('pt_sp->not_valid_child')
self.assertTrue(v.GetError().Fail(),
"Make sure we don't find 'pt_sp->not_valid_child'")
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