"""
Test lldb Python commands.
"""

from __future__ import print_function



import os, time
import lldb
from lldbsuite.test.lldbtest import *

class CmdPythonTestCase(TestBase):

    mydir = TestBase.compute_mydir(__file__)

    def test (self):
        self.build ()
        self.pycmd_tests ()

    def pycmd_tests (self):
        self.runCmd("command source py_import")

        # Verify command that specifies eCommandRequiresTarget returns failure
        # without a target.
        self.expect('targetname',
            substrs = ['a.out'], matching=False, error=True)

        exe = os.path.join (os.getcwd(), "a.out")
        self.expect("file " + exe,
                    patterns = [ "Current executable set to .*a.out" ])

        self.expect('targetname',
            substrs = ['a.out'], matching=True, error=False)

        # This is the function to remove the custom commands in order to have a
        # clean slate for the next test case.
        def cleanup():
            self.runCmd('command script delete welcome', check=False)
            self.runCmd('command script delete targetname', check=False)
            self.runCmd('command script delete longwait', check=False)
            self.runCmd('command script delete mysto', check=False)
            self.runCmd('command script delete tell_sync', check=False)
            self.runCmd('command script delete tell_async', check=False)
            self.runCmd('command script delete tell_curr', check=False)
            self.runCmd('command script delete bug11569', check=False)
            self.runCmd('command script delete takes_exe_ctx', check=False)

        # Execute the cleanup function during test case tear down.
        self.addTearDownHook(cleanup)

        # Interact with debugger in synchronous mode
        self.setAsync(False)

        # We don't want to display the stdout if not in TraceOn() mode.
        if not self.TraceOn():
            self.HideStdout()

        self.expect('welcome Enrico',
            substrs = ['Hello Enrico, welcome to LLDB']);
                
        self.expect("help welcome",
                    substrs = ['Just a docstring for welcome_impl',
                               'A command that says hello to LLDB users'])

        self.expect("help",
                    substrs = ['For more information run',
                               'welcome'])

        self.expect("help -a",
                    substrs = ['For more information run',
                               'welcome'])

        self.expect("help -u", matching=False,
                    substrs = ['For more information run'])

        self.runCmd("command script delete welcome");

        self.expect('welcome Enrico', matching=False, error=True,
                substrs = ['Hello Enrico, welcome to LLDB']);

        self.expect('targetname fail', error=True,
                    substrs = ['a test for error in command'])

        self.expect('command script list',
            substrs = ['targetname',
                       'For more information run'])

        self.expect("help targetname",
                    substrs = ['Expects', '\'raw\'', 'input',
                               'help', 'raw-input'])

        self.expect("longwait",
                    substrs = ['Done; if you saw the delays I am doing OK'])

        self.runCmd("b main")
        self.runCmd("run")
        self.runCmd("mysto 3")
        self.expect("frame variable array",
                    substrs = ['[0] = 79630','[1] = 388785018','[2] = 0'])
        self.runCmd("mysto 3")
        self.expect("frame variable array",
                    substrs = ['[0] = 79630','[4] = 388785018','[5] = 0'])

# we cannot use the stepover command to check for async execution mode since LLDB
# seems to get confused when events start to queue up
        self.expect("tell_sync",
                    substrs = ['running sync'])
        self.expect("tell_async",
                    substrs = ['running async'])
        self.expect("tell_curr",
                    substrs = ['I am running sync'])
                    
# check that the execution context is passed in to commands that ask for it
        self.expect("takes_exe_ctx", substrs = ["a.out"])

        # Test that a python command can redefine itself
        self.expect('command script add -f foobar welcome -h "just some help"')
        
        self.runCmd("command script clear")

        # Test that re-defining an existing command works
        self.runCmd('command script add my_command --class welcome.WelcomeCommand')
        self.expect('my_command Blah', substrs = ['Hello Blah, welcome to LLDB'])

        self.runCmd('command script add my_command --class welcome.TargetnameCommand')
        self.expect('my_command', substrs = ['a.out'])

        self.runCmd("command script clear")
                
        self.expect('command script list', matching=False,
                    substrs = ['targetname',
                               'longwait'])

        self.expect('command script add -f foobar frame', error=True,
                    substrs = ['cannot add command'])

        # http://llvm.org/bugs/show_bug.cgi?id=11569
        # LLDBSwigPythonCallCommand crashes when a command script returns an object 
        self.runCmd('command script add -f bug11569 bug11569')
        # This should not crash.
        self.runCmd('bug11569', check=False)
