"""
Test lldb data formatter subsystem.
"""

from __future__ import print_function


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


class StdIteratorDataFormatterTestCase(TestBase):

    mydir = TestBase.compute_mydir(__file__)

    def setUp(self):
        # Call super's setUp().
        TestBase.setUp(self)
        # Find the line number to break at.
        self.line = line_number('main.cpp', '// Set break point at this line.')

    @add_test_categories(["libstdcxx"])
    def test_with_run_command(self):
        """Test that libstdcpp iterators format properly."""
        self.build()
        self.runCmd("file " + self.getBuildArtifact("a.out"), CURRENT_EXECUTABLE_SET)

        lldbutil.run_break_set_by_file_and_line(
            self, "main.cpp", self.line, num_expected_locations=-1)

        self.runCmd("run", RUN_SUCCEEDED)

        # The stop reason of the thread should be breakpoint.
        self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
                    substrs=['stopped',
                             'stop reason = breakpoint'])

        # This is the function to remove the custom formats in order to have a
        # clean slate for the next test case.
        def cleanup():
            self.runCmd('type format clear', check=False)
            self.runCmd('type summary clear', check=False)
            self.runCmd('type filter clear', check=False)
            self.runCmd('type synth clear', check=False)
            self.runCmd(
                "settings set target.max-children-count 256",
                check=False)

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

        self.expect('frame variable ivI', substrs=['item = 3'])
        self.expect('expr ivI', substrs=['item = 3'])

        self.expect(
            'frame variable iimI',
            substrs=[
                'first = 0',
                'second = 12'])
        self.expect('expr iimI', substrs=['first = 0', 'second = 12'])

        self.expect(
            'frame variable simI',
            substrs=[
                'first = "world"',
                'second = 42'])
        self.expect('expr simI', substrs=['first = "world"', 'second = 42'])

        self.expect('frame variable svI', substrs=['item = "hello"'])
        self.expect('expr svI', substrs=['item = "hello"'])