def test_delete():
"""
Create and delete the following file structure:
Drive
|_Folder
|_Zip
|_File
"""
# Setup
drive = memfs.create('drive', 'Drive')
folder = memfs.create('folder', 'Folder', drive.path)
zip_file = memfs.create('zip', 'Zip', folder.path)
file = memfs.create('file', 'File', zip_file.path)
# Test
assert len(zip_file.children) == 1
memfs.delete(file.path)
assert len(zip_file.children) == 0
assert len(folder.children) == 1
memfs.delete(zip_file.path)
assert len(folder.children) == 0
assert len(drive.children) == 1
memfs.delete(folder.path)
assert len(drive.children) == 0
memfs.delete(drive.path)
def test_move_folder():
"""
Test moving an entire folder
Initial state:
Drive1
|_Folder1
|_File1
|_Zip1
Final state:
Drive1
|_Zip1
|_Folder1
|_File1
"""
drive = memfs.create('drive', 'Drive1')
folder1 = memfs.create('folder', 'Folder1', drive.path)
file1 = memfs.create('file', 'File1', folder1.path)
zip1 = memfs.create('zip', 'Zip1', drive.path)
assert len(folder1.children) == 1
assert len(zip1.children) == 0
memfs.move(folder1.path, "{}\\{}".format(zip1.path, folder1.name))
assert len(folder1.children) == 1
assert len(zip1.children) == 1
assert folder1.parent.name == zip1.name
assert file1.parent.name == folder1.name
def test_create_invalid_path():
"""
The provided parent path must exist in order to create an object
"""
try:
memfs.create('file', 'File', 'some\\nonexistent\\path')
assert True == False # Should not get here
except Exception as e:
assert type(e) == PathNotFoundException
def test_invalid_root_objects():
"""
Any non-drive objects may not be root-level objects
They must be contained in another object (i.e. a drive)
"""
try:
memfs.create('file', 'File1')
assert True == False # Should not get here
except Exception as e:
assert type(e) == IllegalFileSystemOperation
def test_create_duplicate_path():
"""
Objects cannot be created when an object with the same path already exists
"""
memfs.create('drive', 'Drive')
try:
memfs.create('drive', 'Drive')
assert True == False # Should not get here
except Exception as e:
assert type(e) == PathAlreadyExistsException
def test_drive_root_level():
"""
Drive objects must be root-level resources
They cannot be contained in other objects
"""
drive1 = memfs.create('drive', 'Drive1')
try:
memfs.create('drive', 'Drive2', drive1.path)
assert True == False # Should not get here
except Exception as e:
assert type(e) == IllegalFileSystemOperation
def test_move_file_to_file():
"""
Files must be leaf nodes and cannot have items moved under them
"""
drive1 = memfs.create('drive', 'Drive1')
file1 = memfs.create('file', ' File1', drive1.path)
file2 = memfs.create('file', 'File2', drive1.path)
try:
memfs.move(file1.path, '{}\\{}'.format(file1.path, file2.name))
assert True == False # Should not get here
except Exception as e:
assert type(e) == IllegalFileSystemOperation
def test_move_file_to_root():
"""
Files cannot be moved to the root
Should raise an exception
"""
drive1 = memfs.create('drive', 'Drive1')
file1 = memfs.create('file', ' File1', drive1.path)
try:
memfs.move(file1.path, file1.name)
assert True == False # Should not get here
except Exception as e:
assert type(e) == IllegalFileSystemOperation
def test_move_drive():
"""
Drives cannot be moved (they must be root entities)
Should raise an exception
"""
drive1 = memfs.create('drive', 'Drive1')
drive2 = memfs.create('drive', 'Drive2')
try:
memfs.move(drive2.path, "{}\\{}".format(drive1.path, drive2.name))
assert True == False # Should not get here
except Exception as e:
assert type(e) == IllegalFileSystemOperation
def test_move_already_exists_file():
"""
You can't move a file to a path where one already exists (no overwrites)
"""
drive = memfs.create('drive', 'Drive1')
file1 = memfs.create('file', 'File1', drive.path)
file2 = memfs.create('file', 'File2', drive.path)
try:
memfs.move(file1.path, file2.path)
assert True == False # Should not get here
except Exception as e:
assert type(e) == PathAlreadyExistsException
def test_move_non_existent_file():
"""
Trying to move a non-existent source file should fail with an error
"""
drive = memfs.create('drive', 'Drive1')
folder1 = memfs.create('folder', 'Folder1', drive.path)
try:
memfs.move("{}\\{}".format(drive.path, "FakeFile"),
"{}\\{}".format(drive.path, folder1.name))
assert True == False # Should not get here
except Exception as e:
assert type(e) == PathNotFoundException
def test_write_to_non_file():
"""
Writing content to any non-file object should fail
"""
drive = memfs.create('drive', "Drive")
try:
memfs.write_to_file(drive.path, "Foundation")
assert True == False # Should not get here
except Exception as e:
assert type(e) == InvalidWriteException
def test_write_non_existent_file():
"""
Writing to a non-existent file raises an error
"""
drive = memfs.create('drive', "Drive")
try:
memfs.write_to_file("{}\\{}".format(drive.path, "FakeFile"),
"Foundation")
assert True == False # Should not get here
except Exception as e:
assert type(e) == PathNotFoundException
def test_create():
"""
Create the following file structure and verify its properties:
Drive1
|_Folder1
|_Folder2
|_Folder3
|_File1
|_Zip1
|_Folder4
|_File2
"""
drive_name = 'Drive1'
drive = memfs.create('drive', drive_name)
assert drive.type == 'drive'
assert drive.name == drive_name
assert drive.path == drive_name
assert drive.size == 0
folder1_name = 'Folder1'
folder1 = memfs.create('folder', folder1_name, drive.path)
assert folder1.type == 'folder'
assert folder1.name == folder1_name
assert folder1.path == "{}\\{}".format(drive.path, folder1_name)
assert folder1.size == 0
folder2_name = 'Folder2'
folder2 = memfs.create('folder', folder2_name, drive.path)
assert folder2.type == 'folder'
assert folder2.name == folder2_name
assert folder2.path == "{}\\{}".format(drive.path, folder2_name)
assert folder2.size == 0
folder3_name = 'Folder3'
folder3 = memfs.create('folder', folder3_name, folder2.path)
assert folder3.type == 'folder'
assert folder3.name == folder3_name
assert folder3.path == "{}\\{}".format(folder2.path, folder3_name)
assert folder2.size == 0
file1_name = 'File1'
file1 = memfs.create('file', file1_name, folder3.path)
file1_content = 'The Chronicles of Prydain'
assert drive.size == 0
memfs.write_to_file(file1.path, file1_content)
assert file1.type == 'file'
assert file1.name == file1_name
assert file1.path == "{}\\{}".format(folder3.path, file1_name)
assert file1.content == file1_content
assert folder3.size == 25
assert folder2.size == 25
assert drive.size == 25
zip1_name = 'Zip1'
zip1 = memfs.create('zip', zip1_name, drive.path)
assert zip1.type == 'zip'
assert zip1.name == zip1_name
assert zip1.path == "{}\\{}".format(drive.path, zip1_name)
assert zip1.size == 0
folder4_name = 'Folder4'
folder4 = memfs.create('folder', folder4_name, zip1.path)
assert folder4.type == 'folder'
assert folder4.name == folder4_name
assert folder4.path == "{}\\{}".format(zip1.path, folder4_name)
assert folder4.size == 0
file2_name = 'File2'
file2 = memfs.create('file', file2_name, zip1.path)
file2_content = 'The Count of Monte Cristo'
memfs.write_to_file(file2.path, file2_content)
assert file2.type == 'file'
assert file2.name == file2_name
assert file2.path == "{}\\{}".format(zip1.path, file2_name)
assert file2.content == file2_content
assert zip1.size == 13
assert drive.size == 38
assert len(drive.children) == 3
assert len(folder1.children) == 0
assert len(folder2.children) == 1
assert len(folder3.children) == 1
assert len(folder4.children) == 0
