lldb/test/API/lang/cpp/constructors/TestCppConstructors.py

import lldb
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil


@skipIfWasm  # no expression evaluation
class TestCase(TestBase):
    @expectedFailureAll(bugnumber="llvm.org/pr50814", compiler="gcc")
    def test_constructors(self):
        self.build()
        lldbutil.run_to_source_breakpoint(
            self, "// break here", lldb.SBFileSpec("main.cpp")
        )
        self.expect_expr(
            "ClassWithImplicitCtor().foo()", result_type="int", result_value="1"
        )
        self.expect_expr(
            "ClassWithOneCtor(2).value", result_type="int", result_value="2"
        )
        self.expect_expr(
            "ClassWithMultipleCtor(3).value", result_type="int", result_value="3"
        )
        self.expect_expr(
            "ClassWithMultipleCtor(3, 1).value", result_type="int", result_value="4"
        )

        self.expect_expr(
            "ClassWithDeletedCtor().value", result_type="int", result_value="6"
        )
        self.expect_expr(
            "ClassWithDeletedDefaultCtor(7).value", result_type="int", result_value="7"
        )

        # FIXME: It seems we try to call the non-existent default constructor here which is wrong.
        self.expect(
            "expr ClassWithDefaultedCtor().foo()",
            error=True,
            substrs=["Couldn't look up symbols:"],
        )

        # FIXME: Calling deleted constructors should fail before linking.
        self.expect(
            "expr ClassWithDeletedCtor(1).value",
            error=True,
            substrs=["Couldn't look up symbols:"],
        )
        self.expect(
            "expr ClassWithDeletedDefaultCtor().value",
            error=True,
            substrs=["Couldn't look up symbols:", "function", "optimized out"],
        )

    @skipIfWindows  # Can't find operator new.
    @skipIfLinux  # Fails on some Linux systems with SIGABRT.
    def test_constructors_new(self):
        self.build()
        lldbutil.run_to_source_breakpoint(
            self, "// break here", lldb.SBFileSpec("main.cpp")
        )

        self.expect_expr(
            "(new ClassWithOneCtor(1))->value; 1", result_type="int", result_value="1"
        )