lldb/test/API/commands/expression/macros/TestMacros.py

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


class TestMacros(TestBase):
    @skipIf(compiler="clang", compiler_version=["<", "9.0"])
    @expectedFailureAll(
        compiler="clang", bugnumber="clang does not emit .debug_macro[.dwo] sections."
    )
    @expectedFailureAll(
        debug_info="dwo",
        bugnumber="GCC produces multiple .debug_macro.dwo sections and the spec is unclear as to what it means",
    )
    @expectedFailureAll(hostoslist=["windows"], compiler="gcc", triple=".*-android")
    @expectedFailureAll(
        compiler="gcc",
        compiler_version=["<", "5.1"],
        bugnumber=".debug_macro was introduced in DWARF 5, GCC supports it since version 5.1",
    )
    def test_expr_with_macros(self):
        self.build()

        # Get main source file
        src_file = "main.cpp"
        hdr_file = "macro1.h"
        src_file_spec = lldb.SBFileSpec(src_file)
        self.assertTrue(src_file_spec.IsValid(), "Main source file")

        (target, process, thread, bp1) = lldbutil.run_to_source_breakpoint(
            self, "Break here", src_file_spec
        )

        # Get frame for current thread
        frame = thread.GetSelectedFrame()

        result = frame.EvaluateExpression("MACRO_1")
        self.assertTrue(
            result.IsValid() and result.GetValue() == "100", "MACRO_1 = 100"
        )

        result = frame.EvaluateExpression("MACRO_2")
        self.assertTrue(
            result.IsValid() and result.GetValue() == "200", "MACRO_2 = 200"
        )

        result = frame.EvaluateExpression("ONE")
        self.assertTrue(result.IsValid() and result.GetValue() == "1", "ONE = 1")

        result = frame.EvaluateExpression("TWO")
        self.assertTrue(result.IsValid() and result.GetValue() == "2", "TWO = 2")

        result = frame.EvaluateExpression("THREE")
        self.assertTrue(result.IsValid() and result.GetValue() == "3", "THREE = 3")

        result = frame.EvaluateExpression("FOUR")
        self.assertTrue(result.IsValid() and result.GetValue() == "4", "FOUR = 4")

        result = frame.EvaluateExpression("HUNDRED")
        self.assertTrue(
            result.IsValid() and result.GetValue() == "100", "HUNDRED = 100"
        )

        result = frame.EvaluateExpression("THOUSAND")
        self.assertTrue(
            result.IsValid() and result.GetValue() == "1000", "THOUSAND = 1000"
        )

        result = frame.EvaluateExpression("MILLION")
        self.assertTrue(
            result.IsValid() and result.GetValue() == "1000000", "MILLION = 1000000"
        )

        result = frame.EvaluateExpression("MAX(ONE, TWO)")
        self.assertTrue(
            result.IsValid() and result.GetValue() == "2", "MAX(ONE, TWO) = 2"
        )

        result = frame.EvaluateExpression("MAX(THREE, TWO)")
        self.assertTrue(
            result.IsValid() and result.GetValue() == "3", "MAX(THREE, TWO) = 3"
        )

        # Get the thread of the process
        thread.StepOver()

        # Get frame for current thread
        frame = thread.GetSelectedFrame()

        result = frame.EvaluateExpression("MACRO_2")
        self.assertTrue(
            result.GetError().Fail(), "Printing MACRO_2 fails in the mail file"
        )

        result = frame.EvaluateExpression("FOUR")
        self.assertTrue(
            result.GetError().Fail(), "Printing FOUR fails in the main file"
        )

        thread.StepInto()

        # Get frame for current thread
        frame = thread.GetSelectedFrame()

        result = frame.EvaluateExpression("ONE")
        self.assertTrue(result.IsValid() and result.GetValue() == "1", "ONE = 1")

        result = frame.EvaluateExpression("MAX(ONE, TWO)")
        self.assertTrue(
            result.IsValid() and result.GetValue() == "2", "MAX(ONE, TWO) = 2"
        )

        # This time, MACRO_1 and MACRO_2 are not visible.
        result = frame.EvaluateExpression("MACRO_1")
        self.assertTrue(
            result.GetError().Fail(), "Printing MACRO_1 fails in the header file"
        )

        result = frame.EvaluateExpression("MACRO_2")
        self.assertTrue(
            result.GetError().Fail(), "Printing MACRO_2 fails in the header file"
        )

        # Check that the macro definitions do not trigger bogus Clang
        # diagnostics about macro redefinitions.
        result = frame.EvaluateExpression("does_not_parse")
        self.assertNotIn("macro redefined", str(result.GetError()))
        self.assertNotIn("redefining builtin macro", str(result.GetError()))