How can I add progress bar and update it with QThread?

Question

I want to create a progress bar in my GUI and I used QThread to update changes in the progress bar as well as running my function. However, the function was not executed. I wonder what is the probelm. I wrote a demo code for that. Hope anyone can help me.

from PyQt5 import QtWidgets, QtGui, QtCore
from PyQt5.QtWidgets import QCheckBox, QPushButton, QVBoxLayout, QApplication, QHBoxLayout, QLineEdit, QProgressBar
from PyQt5.QtCore import QThread, pyqtSignal
import time
import sys
class CheckToolsGUI(QtWidgets.QWidget):
    
    def __init__(self):
        super().__init__()
        self.setGeometry(300, 300, 400, 250)
        self.setWindowTitle('Application')
        self.run = QPushButton('Run')
        self.run.clicked.connect(self.initialize)
        self.prgb = QProgressBar()
        self.vbox = QVBoxLayout()
        self.vbox.addWidget(self.run)
        self.vbox.addWidget(self.prgb)
        self.prgb.setMaximum(100)
        self.setLayout(self.vbox)
        
    def initialize(self):
        self.run.setEnabled(False)
        self.test = Test()
        self.test.updateSignal.connect(self.update)
        self.test.updateFinish.connect(self.finish)
        self.test.start()
        
    def update(self,value):
        self.prgb.setValue(value)
        
    def finish(self):
        self.run.setEnable(True)
        
class Test(QThread):
    updateSignal = pyqtSignal(int)
    updateFinish = pyqtSignal()
    
    def __init__(self):
        super().__init__()
        print('Start')
    
    def func_1(self):
        print('Func_1')
        for i in range(50):
            self.updateSignal.emit(i)
            time.sleep(0.05)
    def func_2(self):
        print('Func_2')
        for j in range(49,101):
            self.updateSignal.emit(j)
            time.sleep(0.05)
            
    def finish(self):
        self.updateFinish.emit()
if __name__ == '__main__':
    app = QApplication(sys.argv)
    ex = CheckToolsGUI()
    ex.show()
    sys.exit(app.exec_()) 

I tried as above. I expected the progress bar to be updated but the functions were not even executed.