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# (C) Copyright 2005-2025 Enthought, Inc., Austin, TX
# All rights reserved.
#
# This software is provided without warranty under the terms of the BSD
# license included in LICENSE.txt and may be redistributed only under
# the conditions described in the aforementioned license. The license
# is also available online at http://www.enthought.com/licenses/BSD.txt
#
# Thanks for using Enthought open source!
""" Tests file operations. """
# Standard library imports.
import os
import shutil
import stat
import unittest
# Enthought library imports.
from apptools.io import File
class FileTestCase(unittest.TestCase):
""" Tests file operations on a local file system. """
###########################################################################
# 'TestCase' interface.
###########################################################################
def setUp(self):
""" Prepares the test fixture before each test method is called. """
shutil.rmtree("data", ignore_errors=True)
os.mkdir("data")
def tearDown(self):
""" Called immediately after each test method has been called. """
shutil.rmtree("data")
###########################################################################
# Tests.
###########################################################################
def test_properties(self):
""" file properties """
# Properties of a non-existent file.
f = File("data/bogus.xx")
self.assertIn(os.path.abspath(os.path.curdir), f.absolute_path)
self.assertIsNone(f.children)
self.assertEqual(f.ext, ".xx")
self.assertFalse(f.exists)
self.assertFalse(f.is_file)
self.assertFalse(f.is_folder)
self.assertFalse(f.is_package)
self.assertFalse(f.is_readonly)
self.assertEqual(f.mime_type, "content/unknown")
self.assertEqual(f.name, "bogus")
self.assertEqual(f.parent.path, "data")
self.assertEqual(f.path, "data/bogus.xx")
self.assertIn(os.path.abspath(os.path.curdir), f.url)
self.assertEqual(str(f), "File(%s)" % f.path)
# Properties of an existing file.
f = File("data/foo.txt")
f.create_file()
self.assertIn(os.path.abspath(os.path.curdir), f.absolute_path)
self.assertIsNone(f.children)
self.assertEqual(f.ext, ".txt")
self.assertTrue(f.exists)
self.assertTrue(f.is_file)
self.assertFalse(f.is_folder)
self.assertFalse(f.is_package)
self.assertFalse(f.is_readonly)
self.assertEqual(f.mime_type, "text/plain")
self.assertEqual(f.name, "foo")
self.assertEqual(f.parent.path, "data")
self.assertEqual(f.path, "data/foo.txt")
self.assertIn(os.path.abspath(os.path.curdir), f.url)
# Make it readonly.
os.chmod(f.path, stat.S_IRUSR)
self.assertTrue(f.is_readonly)
# And then make it NOT readonly so that we can delete it at the end of
# the test!
os.chmod(f.path, stat.S_IRUSR | stat.S_IWUSR)
self.assertFalse(f.is_readonly)
def test_copy(self):
""" file copy """
content = 'print("Hello World!")\n'
f = File("data/foo.txt")
self.assertFalse(f.exists)
# Create the file.
f.create_file(content)
self.assertTrue(f.exists)
self.assertRaises(ValueError, f.create_file, content)
self.assertIsNone(f.children)
self.assertEqual(f.ext, ".txt")
self.assertTrue(f.is_file)
self.assertFalse(f.is_folder)
self.assertEqual(f.mime_type, "text/plain")
self.assertEqual(f.name, "foo")
self.assertEqual(f.path, "data/foo.txt")
# Copy the file.
g = File("data/bar.txt")
self.assertFalse(g.exists)
f.copy(g)
self.assertTrue(g.exists)
self.assertIsNone(g.children)
self.assertEqual(g.ext, ".txt")
self.assertTrue(g.is_file)
self.assertFalse(g.is_folder)
self.assertEqual(g.mime_type, "text/plain")
self.assertEqual(g.name, "bar")
self.assertEqual(g.path, "data/bar.txt")
# Attempt to copy a non-existent file (should do nothing).
f = File("data/bogus.xx")
self.assertFalse(f.exists)
g = File("data/bogus_copy.txt")
self.assertFalse(g.exists)
f.copy(g)
self.assertFalse(g.exists)
def test_create_file(self):
""" file creation """
content = 'print("Hello World!")\n'
f = File("data/foo.txt")
self.assertFalse(f.exists)
# Create the file.
f.create_file(content)
self.assertTrue(f.exists)
with open(f.path) as file:
self.assertEqual(file.read(), content)
# Try to create it again.
self.assertRaises(ValueError, f.create_file, content)
def test_delete(self):
""" file deletion """
content = 'print("Hello World!")\n'
f = File("data/foo.txt")
self.assertFalse(f.exists)
# Create the file.
f.create_file(content)
self.assertTrue(f.exists)
self.assertRaises(ValueError, f.create_file, content)
self.assertIsNone(f.children)
self.assertEqual(f.ext, ".txt")
self.assertTrue(f.is_file)
self.assertFalse(f.is_folder)
self.assertEqual(f.mime_type, "text/plain")
self.assertEqual(f.name, "foo")
self.assertEqual(f.path, "data/foo.txt")
# Delete it.
f.delete()
self.assertFalse(f.exists)
# Attempt to delete a non-existet file (should do nothing).
f = File("data/bogus.txt")
self.assertFalse(f.exists)
f.delete()
self.assertFalse(f.exists)
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