VIM-like-text-editor/test.py

# python -m unittest test.py

import unittest
from mvc.models import VimModel
from mystring import MyString as MyString

class TestVimModel(unittest.TestCase):
    def setUp(self):
        self.model = VimModel(displayLinesCount=10, displayColsCount=80)
        self.model.displayBuffer = [MyString("line 1"), MyString("line 2")]

    def test_initial_state(self):
        self.assertEqual(self.model.currentLine, 0)
        self.assertEqual(self.model.currentCol, 0)
        self.assertEqual(len(self.model.displayBuffer), 2)

    def test_insert_symbol(self):
        self.model.InsertSymbol(ord('a'))
        self.assertEqual(self.model.displayBuffer[0].data(), "aline 1")
        self.assertEqual(self.model.currentCol, 1)

    def test_move_right(self):
        self.model.currentCol = 5
        self.model.MoveRight()
        self.assertEqual(self.model.currentCol, 6)

    def test_move_left(self):
        self.model.currentCol = 5
        self.model.MoveLeft()
        self.assertEqual(self.model.currentCol, 4)

    def test_move_up(self):
        self.model.currentLine = 1
        self.model.MoveUp()
        self.assertEqual(self.model.currentLine, 0)

    def test_move_down(self):
        self.model.MoveDown()
        self.assertEqual(self.model.currentLine, 1)

    def test_backspace(self):
        self.model.currentCol = 5
        self.model.Backspace()
        self.assertEqual(self.model.displayBuffer[0].data(), "line1")
        self.assertEqual(self.model.currentCol, 4)

    def test_enter(self):
        self.model.currentCol = 5
        self.model.Enter()
        self.assertEqual(len(self.model.displayBuffer), 3)
        self.assertEqual(self.model.displayBuffer[0].data(), "line ")
        self.assertEqual(self.model.displayBuffer[1].data(), "1")
        self.assertEqual(self.model.currentLine, 1)
        self.assertEqual(self.model.currentCol, 0)

    def test_to_line_start(self):
        self.model.currentCol = 5
        self.model.ToLineStart()
        self.assertEqual(self.model.currentCol, 0)

    def test_to_line_end(self):
        self.model.ToLineEnd()
        self.assertEqual(self.model.currentCol, len(self.model.displayBuffer[0]))

    def test_save_file(self):
        self.model.SaveFile()
        with open("testfile.txt", "r") as file:
            lines = file.readlines()
        self.assertEqual(lines[0].strip(), "line 1")
        self.assertEqual(lines[1].strip(), "line 2")

    def test_load_file(self):
        self.model.LoadFile("testfile.txt")
        self.assertEqual(len(self.model.displayBuffer), 2)
        self.assertEqual(self.model.displayBuffer[0].data(), "line 1")
        self.assertEqual(self.model.displayBuffer[1].data(), "line 2")

if __name__ == '__main__':
    unittest.main()