diff --git a/.coverage b/.coverage
new file mode 100644
index 0000000..deb467c
Binary files /dev/null and b/.coverage differ
diff --git a/.gitignore b/.gitignore
index c85a58d..424e599 100644
--- a/.gitignore
+++ b/.gitignore
@@ -19,3 +19,4 @@ undefined
 /memory
 /applications
 api/__pycache__/logger.cpython-313.pyc
+.coverage
diff --git a/main.py b/main.py
index df63cec..c1f222c 100644
--- a/main.py
+++ b/main.py
@@ -154,7 +154,8 @@ def check_connection() -> None:
 def pass_exsists() -> bool:
     try:
         with open('etc/psswrd.txt', 'r') as f:
-            if len(f.read()) < 8 or len(f.read()) > 72: # pass min len is 8 max 72
+            content = f.read()
+            if len(content) < 8 or len(content) > 72: # pass min len is 8 max 72
                 return False # might as well mk a new one
             else:
                 return True
diff --git a/tests/test_main.py b/tests/test_main.py
new file mode 100644
index 0000000..df98045
--- /dev/null
+++ b/tests/test_main.py
@@ -0,0 +1,221 @@
+import sys
+import os
+from unittest.mock import patch
+import pytest
+
+# Add the root directory to the python path to allow for imports
+sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), '..')))
+
+from main import pass_exsists
+from unittest.mock import mock_open
+
+@patch('builtins.open', new_callable=mock_open, read_data='a' * 8)
+def test_pass_exsists_true(mock_file):
+    """
+    Test that pass_exsists returns True when the password file exists and is valid.
+    """
+    assert pass_exsists() is True
+
+@patch('builtins.open', side_effect=FileNotFoundError)
+@patch('os.makedirs')
+@patch('main.file_system_helper', return_value=True)
+def test_pass_exsists_false_no_file(mock_fs_helper, mock_makedirs, mock_open):
+    """
+    Test that pass_exsists returns False when the password file does not exist.
+    """
+    assert pass_exsists() is False
+    mock_makedirs.assert_called_once_with("etc")
+    mock_fs_helper.assert_called_with("etc/psswrd.txt", "touch")
+
+@patch('builtins.open', new_callable=mock_open, read_data='a' * 7)
+def test_pass_exsists_false_short_password(mock_file):
+    """
+    Test that pass_exsists returns False when the password is too short.
+    """
+    assert pass_exsists() is False
+
+@patch('builtins.open', new_callable=mock_open, read_data='a' * 73)
+def test_pass_exsists_false_long_password(mock_file):
+    """
+    Test that pass_exsists returns False when the password is too long.
+    """
+    assert pass_exsists() is False
+
+from main import check_connection
+
+@patch('main.check_url', return_value=True)
+@patch('main.fl.error')
+@patch('main.console')
+def test_check_connection_success(mock_console, mock_fl_error, mock_check_url):
+    """
+    Test that check_connection handles a successful connection correctly.
+    """
+    check_connection()
+    mock_check_url.assert_called_once_with("https://www.python.org", 3)
+    mock_fl_error.assert_not_called()
+    mock_console.print.assert_not_called()
+
+@patch('main.check_url', return_value=False)
+@patch('main.fl.error')
+@patch('main.console')
+def test_check_connection_failure(mock_console, mock_fl_error, mock_check_url):
+    """
+    Test that check_connection handles a failed connection correctly.
+    """
+    check_connection()
+    mock_check_url.assert_called_once_with("https://www.python.org", 3)
+    mock_fl_error.assert_called_once_with("No internet connection detected")
+    mock_console.print.assert_called_once()
+
+from main import run_onboarding
+
+@patch('main.print')
+@patch('main.time.sleep')
+@patch('main.console')
+@patch('main.printWelcome')
+def test_run_onboarding(mock_print_welcome, mock_console, mock_sleep, mock_print):
+    """
+    Test that run_onboarding prints the correct messages and sleeps for 5 seconds.
+    """
+    run_onboarding()
+    assert mock_print.call_count == 3
+    mock_sleep.assert_called_once_with(5)
+    mock_console.clear.assert_called_once()
+    mock_print_welcome.assert_called_once()
+
+from main import application_hub
+
+@patch('builtins.input', side_effect=['1', 'exit'])
+@patch('main.Weather.main')
+def test_application_hub_weather(mock_weather_main, mock_input):
+    """
+    Test that application_hub calls Weather.main when the user enters '1'.
+    """
+    with pytest.raises(SystemExit):
+        application_hub()
+    mock_weather_main.assert_called_once()
+
+@patch('builtins.input', side_effect=['2', 'exit'])
+@patch('main.ToDo.main')
+def test_application_hub_todo(mock_todo_main, mock_input):
+    """
+    Test that application_hub calls ToDo.main when the user enters '2'.
+    """
+    with pytest.raises(SystemExit):
+        application_hub()
+    mock_todo_main.assert_called_once()
+
+@patch('builtins.input', side_effect=['onboarding', 'exit'])
+@patch('main.run_onboarding')
+def test_application_hub_onboarding(mock_run_onboarding, mock_input):
+    """
+    Test that application_hub calls run_onboarding when the user enters 'onboarding'.
+    """
+    with pytest.raises(SystemExit):
+        application_hub()
+    mock_run_onboarding.assert_called_once()
+
+@patch('builtins.input', side_effect=['invalid', 'exit'])
+@patch('main.console')
+def test_application_hub_invalid_input(mock_console, mock_input):
+    """
+    Test that application_hub prints an error message for invalid input.
+    """
+    with pytest.raises(SystemExit):
+        application_hub()
+    mock_console.print.assert_called_with("[red]Invalid application[/red]")
+
+@patch('builtins.input', side_effect=['1', 'exit'])
+@patch('main.Weather.main', side_effect=Exception("Test Exception"))
+@patch('main.application_error')
+def test_application_hub_exception(mock_application_error, mock_weather_main, mock_input):
+    """
+    Test that application_hub handles exceptions in applications.
+    """
+    with pytest.raises(SystemExit):
+        application_hub()
+    mock_application_error.assert_called_once()
+
+from main import create_password
+
+@patch('getpass.getpass', return_value='password123')
+@patch('bcrypt.hashpw', return_value=b'hashed_password')
+@patch('builtins.open')
+def test_create_password_success(mock_open, mock_hashpw, mock_getpass):
+    """
+    Test that create_password successfully creates a password.
+    """
+    create_password()
+    mock_hashpw.assert_called_once()
+    mock_open.assert_called_with('etc/psswrd.txt', 'w')
+
+@patch('getpass.getpass', side_effect=['short', 'validpassword'])
+@patch('main.print')
+@patch('bcrypt.hashpw', return_value=b'hashed_password')
+@patch('builtins.open')
+def test_create_password_too_short(mock_open, mock_hashpw, mock_print, mock_getpass):
+    """
+    Test that create_password handles a password that is too short.
+    """
+    create_password()
+    mock_print.assert_called_with("[red]Your password does not meet the required safety guidelines of at least 8 chars. Please choose a stronger password.[/red]")
+    mock_hashpw.assert_called_once()
+
+@patch('getpass.getpass', side_effect=['a' * 73, 'validpassword'])
+@patch('main.print')
+@patch('bcrypt.hashpw', return_value=b'hashed_password')
+@patch('builtins.open')
+def test_create_password_too_long(mock_open, mock_hashpw, mock_print, mock_getpass):
+    """
+    Test that create_password handles a password that is too long.
+    """
+    create_password()
+    mock_print.assert_called_with("[red]Your password is too long! Choose a shorter one[/red]")
+    mock_hashpw.assert_called_once()
+
+from main import handle_password_authentication
+
+@patch('getpass.getpass', return_value='password123')
+@patch('bcrypt.checkpw', return_value=True)
+@patch('builtins.open')
+def test_handle_password_authentication_success(mock_open, mock_checkpw, mock_getpass):
+    """
+    Test successful password authentication.
+    """
+    handle_password_authentication()
+    mock_checkpw.assert_called_once()
+
+@patch('getpass.getpass', side_effect=['wrongpassword', 'password123'])
+@patch('bcrypt.checkpw', side_effect=[False, True])
+@patch('builtins.open')
+@patch('main.print')
+def test_handle_password_authentication_incorrect_password(mock_print, mock_open, mock_checkpw, mock_getpass):
+    """
+    Test incorrect password authentication.
+    """
+    handle_password_authentication()
+    assert mock_checkpw.call_count == 2
+    mock_print.assert_any_call("[red]Incorrect password, please try again[/red]\n[orange]Please double check for typeos[/orange]")
+
+@patch('getpass.getpass', side_effect=KeyboardInterrupt)
+@patch('builtins.open')
+@patch('main.print')
+def test_handle_password_authentication_keyboard_interrupt(mock_print, mock_open, mock_getpass):
+    """
+    Test keyboard interrupt during password authentication.
+    """
+    with pytest.raises(SystemExit):
+        handle_password_authentication()
+    mock_print.assert_any_call("\n[red on white]Exiting password check...[/red on white]")
+
+from main import run_startup_tasks
+
+@patch('threading.Thread')
+def test_run_startup_tasks(mock_thread):
+    """
+    Test that run_startup_tasks starts and joins threads correctly.
+    """
+    run_startup_tasks()
+    assert mock_thread.call_count == 1
+    mock_thread.return_value.start.assert_called_once()
+    mock_thread.return_value.join.assert_called_once()
\ No newline at end of file