'''Unittests for idlelib/SearchDialogBase.py

Coverage: 99%. The only thing not covered is inconsequential --
testing skipping of suite when self.needwrapbutton is false.

'''
import unittest
from test.support import requires
from tkinter import Tk, Toplevel, Frame, Label, BooleanVar, StringVar
from idlelib import SearchEngine as se
from idlelib import SearchDialogBase as sdb
from idlelib.idle_test.mock_idle import Func
from idlelib.idle_test.mock_tk import Var, Mbox

# The following could help make some tests gui-free.
# However, they currently make radiobutton tests fail.
##def setUpModule():
##    # Replace tk objects used to initialize se.SearchEngine.
##    se.BooleanVar = Var
##    se.StringVar = Var
##
##def tearDownModule():
##    se.BooleanVar = BooleanVar
##    se.StringVar = StringVar

class SearchDialogBaseTest(unittest.TestCase):

    @classmethod
    def setUpClass(cls):
        requires('gui')
        cls.root = Tk()

    @classmethod
    def tearDownClass(cls):
        cls.root.destroy()
        del cls.root

    def setUp(self):
        self.engine = se.SearchEngine(self.root)  # None also seems to work
        self.dialog = sdb.SearchDialogBase(root=self.root, engine=self.engine)

    def tearDown(self):
        self.dialog.close()

    def test_open_and_close(self):
        # open calls create_widgets, which needs default_command
        self.dialog.default_command = None

        # Since text parameter of .open is not used in base class,
        # pass dummy 'text' instead of tk.Text().
        self.dialog.open('text')
        self.assertEqual(self.dialog.top.state(), 'normal')
        self.dialog.close()
        self.assertEqual(self.dialog.top.state(), 'withdrawn')

        self.dialog.open('text', searchphrase="hello")
        self.assertEqual(self.dialog.ent.get(), 'hello')
        self.dialog.close()

    def test_create_widgets(self):
        self.dialog.create_entries = Func()
        self.dialog.create_option_buttons = Func()
        self.dialog.create_other_buttons = Func()
        self.dialog.create_command_buttons = Func()

        self.dialog.default_command = None
        self.dialog.create_widgets()

        self.assertTrue(self.dialog.create_entries.called)
        self.assertTrue(self.dialog.create_option_buttons.called)
        self.assertTrue(self.dialog.create_other_buttons.called)
        self.assertTrue(self.dialog.create_command_buttons.called)

    def test_make_entry(self):
        equal = self.assertEqual
        self.dialog.row = 0
        self.dialog.top = Toplevel(self.root)
        label, entry = self.dialog.make_entry("Test:", 'hello')
        equal(label['text'], 'Test:')

        self.assertIn(entry.get(), 'hello')
        egi = entry.grid_info()
        equal(egi['row'], 0)
        equal(egi['column'], 1)
        equal(egi['rowspan'], 1)
        equal(egi['columnspan'], 1)
        equal(self.dialog.row, 1)

    def test_create_entries(self):
        self.dialog.row = 0
        self.engine.setpat('hello')
        self.dialog.create_entries()
        self.assertIn(self.dialog.ent.get(), 'hello')

    def test_make_frame(self):
        self.dialog.row = 0
        self.dialog.top = Toplevel(self.root)
        frame, label = self.dialog.make_frame()
        self.assertEqual(label, '')
        self.assertIsInstance(frame, Frame)

        frame, label = self.dialog.make_frame('testlabel')
        self.assertEqual(label['text'], 'testlabel')
        self.assertIsInstance(frame, Frame)

    def btn_test_setup(self, meth):
        self.dialog.top = Toplevel(self.root)
        self.dialog.row = 0
        return meth()

    def test_create_option_buttons(self):
        e = self.engine
        for state in (0, 1):
            for var in (e.revar, e.casevar, e.wordvar, e.wrapvar):
                var.set(state)
            frame, options = self.btn_test_setup(
                    self.dialog.create_option_buttons)
            for spec, button in zip (options, frame.pack_slaves()):
                var, label = spec
                self.assertEqual(button['text'], label)
                self.assertEqual(var.get(), state)
                if state == 1:
                    button.deselect()
                else:
                    button.select()
                self.assertEqual(var.get(), 1 - state)

    def test_create_other_buttons(self):
        for state in (False, True):
            var = self.engine.backvar
            var.set(state)
            frame, others = self.btn_test_setup(
                self.dialog.create_other_buttons)
            buttons = frame.pack_slaves()
            for spec, button in zip(others, buttons):
                val, label = spec
                self.assertEqual(button['text'], label)
                if val == state:
                    # hit other button, then this one
                    # indexes depend on button order
                    self.assertEqual(var.get(), state)
                    buttons[val].select()
                    self.assertEqual(var.get(), 1 - state)
                    buttons[1-val].select()
                    self.assertEqual(var.get(), state)

    def test_make_button(self):
        self.dialog.top = Toplevel(self.root)
        self.dialog.buttonframe = Frame(self.dialog.top)
        btn = self.dialog.make_button('Test', self.dialog.close)
        self.assertEqual(btn['text'], 'Test')

    def test_create_command_buttons(self):
        self.dialog.create_command_buttons()
        # Look for close button command in buttonframe
        closebuttoncommand = ''
        for child in self.dialog.buttonframe.winfo_children():
            if child['text'] == 'close':
                closebuttoncommand = child['command']
        self.assertIn('close', closebuttoncommand)



if __name__ == '__main__':
    unittest.main(verbosity=2, exit=2)