test mocktk text class against tkinter text class run same tests with both by creating a mixin class setupclass defines cls text and maybe cls root setup defines self text from text and maybe root if index1 insert or end or end there is no deletion delete n and combine 2 lines into 1 need data so indexes not squished to 1 0 test endflags 1 0 not tested by testindex which uses 1 several tests insert this after initialization n present at initialization before insert setupclass defines cls text and maybe cls root setup defines self text from text and maybe root nothing if index1 insert or end or end there is no deletion delete n and combine 2 lines into 1 insert and delete need data so indexes not squished to 1 0 test endflags 1 0 not tested by test_index which uses 1
import unittest
from test.support import requires
from _tkinter import TclError

class TextTest:
    "Define items common to both sets of tests."

    hw = 'hello\nworld'  
    hwn = hw+'\n'  

    
    

    def test_init(self):
        self.assertEqual(self.text.get('1.0'), '\n')
        self.assertEqual(self.text.get('end'), '')

    def test_index_empty(self):
        index = self.text.index

        for dex in (-1.0, 0.3, '1.-1', '1.0', '1.0 lineend', '1.end', '1.33',
                'insert'):
            self.assertEqual(index(dex), '1.0')

        for dex in 'end', 2.0, '2.1', '33.44':
            self.assertEqual(index(dex), '2.0')

    def test_index_data(self):
        index = self.text.index
        self.text.insert('1.0', self.hw)

        for dex in -1.0, 0.3, '1.-1', '1.0':
            self.assertEqual(index(dex), '1.0')

        for dex in '1.0 lineend', '1.end', '1.33':
            self.assertEqual(index(dex), '1.5')

        for dex in 'end',  '33.44':
            self.assertEqual(index(dex), '3.0')

    def test_get(self):
        get = self.text.get
        Equal = self.assertEqual
        self.text.insert('1.0', self.hw)

        Equal(get('end'), '')
        Equal(get('end', 'end'), '')
        Equal(get('1.0'), 'h')
        Equal(get('1.0', '1.1'), 'h')
        Equal(get('1.0', '1.3'), 'hel')
        Equal(get('1.1', '1.3'), 'el')
        Equal(get('1.0', '1.0 lineend'), 'hello')
        Equal(get('1.0', '1.10'), 'hello')
        Equal(get('1.0 lineend'), '\n')
        Equal(get('1.1', '2.3'), 'ello\nwor')
        Equal(get('1.0', '2.5'), self.hw)
        Equal(get('1.0', 'end'), self.hwn)
        Equal(get('0.0', '5.0'), self.hwn)

    def test_insert(self):
        insert = self.text.insert
        get = self.text.get
        Equal = self.assertEqual

        insert('1.0', self.hw)
        Equal(get('1.0', 'end'), self.hwn)

        insert('1.0', '')  
        Equal(get('1.0', 'end'), self.hwn)

        insert('1.0', '*')
        Equal(get('1.0', 'end'), '*hello\nworld\n')

        insert('1.0 lineend', '*')
        Equal(get('1.0', 'end'), '*hello*\nworld\n')

        insert('2.3', '*')
        Equal(get('1.0', 'end'), '*hello*\nwor*ld\n')

        insert('end', 'x')
        Equal(get('1.0', 'end'), '*hello*\nwor*ldx\n')

        insert('1.4', 'x\n')
        Equal(get('1.0', 'end'), '*helx\nlo*\nwor*ldx\n')

    def test_no_delete(self):
        
        delete = self.text.delete
        get = self.text.get
        Equal = self.assertEqual
        self.text.insert('1.0', self.hw)

        delete('insert')
        Equal(get('1.0', 'end'), self.hwn)

        delete('end')
        Equal(get('1.0', 'end'), self.hwn)

        delete('insert', 'end')
        Equal(get('1.0', 'end'), self.hwn)

        delete('insert', '5.5')
        Equal(get('1.0', 'end'), self.hwn)

        delete('1.4', '1.0')
        Equal(get('1.0', 'end'), self.hwn)

        delete('1.4', '1.4')
        Equal(get('1.0', 'end'), self.hwn)

    def test_delete_char(self):
        delete = self.text.delete
        get = self.text.get
        Equal = self.assertEqual
        self.text.insert('1.0', self.hw)

        delete('1.0')
        Equal(get('1.0', '1.end'), 'ello')

        delete('1.0', '1.1')
        Equal(get('1.0', '1.end'), 'llo')

        
        delete('1.end')
        Equal(get('1.0', '1.end'), 'lloworld')

        self.text.insert('1.3', '\n')
        delete('1.10')
        Equal(get('1.0', '1.end'), 'lloworld')

        self.text.insert('1.3', '\n')
        delete('1.3', '2.0')
        Equal(get('1.0', '1.end'), 'lloworld')

    def test_delete_slice(self):
        delete = self.text.delete
        get = self.text.get
        Equal = self.assertEqual
        self.text.insert('1.0', self.hw)

        delete('1.0', '1.0 lineend')
        Equal(get('1.0', 'end'), '\nworld\n')

        delete('1.0', 'end')
        Equal(get('1.0', 'end'), '\n')

        self.text.insert('1.0', self.hw)
        delete('1.0', '2.0')
        Equal(get('1.0', 'end'), 'world\n')

        delete('1.0', 'end')
        Equal(get('1.0', 'end'), '\n')

        self.text.insert('1.0', self.hw)
        delete('1.2', '2.3')
        Equal(get('1.0', 'end'), 'held\n')

    def test_multiple_lines(self):  
        self.text.insert('1.0', 'hello')

        self.text.insert('1.3', '1\n2\n3\n4\n5')
        self.assertEqual(self.text.get('1.0', 'end'), 'hel1\n2\n3\n4\n5lo\n')

        self.text.delete('1.3', '5.1')
        self.assertEqual(self.text.get('1.0', 'end'), 'hello\n')

    def test_compare(self):
        compare = self.text.compare
        Equal = self.assertEqual
        
        self.text.insert('1.0', 'First\nSecond\nThird\n')

        self.assertRaises(TclError, compare, '2.2', 'op', '2.2')

        for op, less1, less0, equal, greater0, greater1 in (
                ('<', True, True, False, False, False),
                ('<=', True, True, True, False, False),
                ('>', False, False, False, True, True),
                ('>=', False, False, True, True, True),
                ('==', False, False, True, False, False),
                ('!=', True, True, False, True, True),
                ):
            Equal(compare('1.1', op, '2.2'), less1, op)
            Equal(compare('2.1', op, '2.2'), less0, op)
            Equal(compare('2.2', op, '2.2'), equal, op)
            Equal(compare('2.3', op, '2.2'), greater0, op)
            Equal(compare('3.3', op, '2.2'), greater1, op)


class MockTextTest(TextTest, unittest.TestCase):

    @classmethod
    def setUpClass(cls):
        from idlelib.idle_test.mock_tk import Text
        cls.Text = Text

    def setUp(self):
        self.text = self.Text()


    def test_decode(self):
        
        decode = self.text._decode
        Equal = self.assertEqual
        self.text.insert('1.0', self.hw)

        Equal(decode('end', -1), (2, 5))
        Equal(decode('3.1', -1), (2, 5))
        Equal(decode('end',  0), (2, 6))
        Equal(decode('3.1', 0), (2, 6))


class TkTextTest(TextTest, unittest.TestCase):

    @classmethod
    def setUpClass(cls):
        requires('gui')
        from tkinter import Tk, Text
        cls.Text = Text
        cls.root = Tk()

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

    def setUp(self):
        self.text = self.Text(self.root)


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