"""Tests for the notebook manager."""

import os
from unittest import TestCase
from tempfile import NamedTemporaryFile

from IPython.utils.tempdir import TemporaryDirectory
from IPython.utils.traitlets import TraitError

from IPython.frontend.html.notebook.filenbmanager import FileNotebookManager

class TestNotebookManager(TestCase):

    def test_nb_dir(self):
        with TemporaryDirectory() as td:
            km = FileNotebookManager(notebook_dir=td)
            self.assertEquals(km.notebook_dir, td)

    def test_create_nb_dir(self):
        with TemporaryDirectory() as td:
            nbdir = os.path.join(td, 'notebooks')
            km = FileNotebookManager(notebook_dir=nbdir)
            self.assertEquals(km.notebook_dir, nbdir)

    def test_missing_nb_dir(self):
        with TemporaryDirectory() as td:
            nbdir = os.path.join(td, 'notebook', 'dir', 'is', 'missing')
            self.assertRaises(TraitError, FileNotebookManager, notebook_dir=nbdir)

    def test_invalid_nb_dir(self):
        with NamedTemporaryFile() as tf:
            self.assertRaises(TraitError, FileNotebookManager, notebook_dir=tf.name)