llvm/lldb/test/API/functionalities/scripted_process/TestScriptedProcess.py

"""
Test python scripted process in lldb
"""

import os

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


class ScriptedProcesTestCase(TestBase):

    mydir = TestBase.compute_mydir(__file__)

    def setUp(self):
        TestBase.setUp(self)
        self.source = "main.c"

    def tearDown(self):
        TestBase.tearDown(self)

    def test_python_plugin_package(self):
        """Test that the lldb python module has a `plugins.scripted_process`
        package."""
        self.expect('script import lldb.plugins',
                    substrs=["ModuleNotFoundError"], matching=False)

        self.expect('script dir(lldb.plugins)',
                    substrs=["scripted_process"])

        self.expect('script import lldb.plugins.scripted_process',
                    substrs=["ModuleNotFoundError"], matching=False)

        self.expect('script dir(lldb.plugins.scripted_process)',
                    substrs=["ScriptedProcess"])

        self.expect('script from lldb.plugins.scripted_process import ScriptedProcess',
                    substrs=["ImportError"], matching=False)

        self.expect('script dir(ScriptedProcess)',
                    substrs=["launch"])

    def test_scripted_process_and_scripted_thread(self):
        """Test that we can launch an lldb scripted process using the SBAPI,
        check its process ID, read string from memory, check scripted thread
        id, name stop reason and register context.
        """
        self.build()
        target = self.dbg.CreateTarget(self.getBuildArtifact("a.out"))
        self.assertTrue(target, VALID_TARGET)

        scripted_process_example_relpath = 'dummy_scripted_process.py'
        os.environ['SKIP_SCRIPTED_PROCESS_LAUNCH'] = '1'
        self.runCmd("command script import " + os.path.join(self.getSourceDir(),
                                                            scripted_process_example_relpath))

        launch_info = lldb.SBLaunchInfo(None)
        launch_info.SetProcessPluginName("ScriptedProcess")
        launch_info.SetScriptedProcessClassName("dummy_scripted_process.DummyScriptedProcess")

        error = lldb.SBError()
        process = target.Launch(launch_info, error)
        self.assertTrue(process and process.IsValid(), PROCESS_IS_VALID)
        self.assertEqual(process.GetProcessID(), 42)

        self.assertEqual(process.GetNumThreads(), 1)

        thread = process.GetSelectedThread()
        self.assertTrue(thread, "Invalid thread.")
        self.assertEqual(thread.GetThreadID(), 0x19)
        self.assertEqual(thread.GetName(), "DummyScriptedThread.thread-1")
        self.assertEqual(thread.GetStopReason(), lldb.eStopReasonSignal)

        self.assertGreater(thread.GetNumFrames(), 0)

        frame = thread.GetFrameAtIndex(0)
        register_set = frame.registers # Returns an SBValueList.
        for regs in register_set:
            if 'GPR' in regs.name:
                registers  = regs
                break

        self.assertTrue(registers, "Invalid General Purpose Registers Set")
        self.assertEqual(registers.GetNumChildren(), 21)
        for idx, reg in enumerate(registers, start=1):
            self.assertEqual(idx, int(reg.value, 16))

    def test_launch_scripted_process_stack_frames(self):
        """Test that we can launch an lldb scripted process from the command
        line, check its process ID and read string from memory."""
        self.build()
        target = self.dbg.CreateTarget(self.getBuildArtifact("a.out"))
        self.assertTrue(target, VALID_TARGET)

        for module in target.modules:
            if 'a.out' in module.GetFileSpec().GetFilename():
                main_module = module

        self.assertTrue(main_module, "Invalid main module.")
        error = target.SetModuleLoadAddress(main_module, 0)
        self.assertTrue(error.Success(), "Reloading main module at offset 0 failed.")

        scripted_process_example_relpath = ['..','..','..','..','examples','python','scripted_process','my_scripted_process.py']
        self.runCmd("command script import " + os.path.join(self.getSourceDir(),
                                                            *scripted_process_example_relpath))

        process = target.GetProcess()
        self.assertTrue(process, PROCESS_IS_VALID)
        self.assertEqual(process.GetProcessID(), 42)
        self.assertEqual(process.GetNumThreads(), 1)

        error = lldb.SBError()
        hello_world = "Hello, world!"
        memory_read = process.ReadCStringFromMemory(0x50000000000,
                                                    len(hello_world) + 1, # NULL byte
                                                    error)
        thread = process.GetSelectedThread()
        self.assertTrue(thread, "Invalid thread.")
        self.assertEqual(thread.GetThreadID(), 0x19)
        self.assertEqual(thread.GetName(), "MyScriptedThread.thread-1")

        self.assertEqual(thread.GetNumFrames(), 4)
        frame = thread.GetSelectedFrame()
        self.assertTrue(frame, "Invalid frame.")
        self.assertEqual(frame.GetFunctionName(), "bar")
        self.assertEqual(int(frame.FindValue("i", lldb.eValueTypeVariableArgument).GetValue()), 42)
        self.assertEqual(int(frame.FindValue("j", lldb.eValueTypeVariableLocal).GetValue()), 42 * 42)