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"""
Test evaluating expressions when debugging core file.
"""
import lldb
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil
@skipIfLLVMTargetMissing("X86")
class CoreExprTestCase(TestBase):
def setUp(self):
TestBase.setUp(self)
self.target = self.dbg.CreateTarget("linux-x86_64.out")
self.process = self.target.LoadCore("linux-x86_64.core")
self.assertTrue(self.process, PROCESS_IS_VALID)
def test_result_var(self):
"""Test that the result variable can be used in subsequent expressions."""
self.expect_expr(
"outer",
result_type="Outer",
result_children=[ValueCheck(name="inner", type="Inner")],
)
self.expect_expr(
"$0.inner",
result_type="Inner",
result_children=[ValueCheck(name="val", type="int", value="5")],
)
self.expect_expr("$1.val", result_type="int", result_value="5")
def test_persist_var(self):
"""Test that user-defined variables can be used in subsequent expressions."""
self.target.EvaluateExpression("int $my_int = 5")
self.expect_expr("$my_int * 2", result_type="int", result_value="10")
# Try assigning the persistent variable a new value.
self.target.EvaluateExpression("$my_int = 55")
self.expect_expr("$my_int", result_type="int", result_value="55")
def test_context_object(self):
"""Test expression evaluation in context of an object."""
val_outer = self.expect_expr("outer", result_type="Outer")
val_inner = val_outer.EvaluateExpression("inner")
self.assertTrue(val_inner.IsValid())
self.assertEqual("Inner", val_inner.GetDisplayTypeName())
val_val = val_inner.EvaluateExpression("this->val")
self.assertTrue(val_val.IsValid())
self.assertEqual("int", val_val.GetDisplayTypeName())
self.assertEqual(val_val.GetValueAsSigned(), 5)
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