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esp-idf/components/fatfs/test_fatfsgen/test_fatfsgen.py

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#!/usr/bin/env python
# SPDX-FileCopyrightText: 2021 Espressif Systems (Shanghai) CO LTD
# SPDX-License-Identifier: Apache-2.0
import os
import shutil
import sys
import unittest
from test_utils import CFG, generate_test_dir_1, generate_test_dir_2
sys.path.append(os.path.join(os.path.dirname(__file__), '..'))
import fatfsgen # noqa E402
from fatfsgen_utils.exceptions import WriteDirectoryException # noqa E402
from fatfsgen_utils.exceptions import LowerCaseException, NoFreeClusterException, TooLongNameException # noqa E402
class FatFSGen(unittest.TestCase):
def setUp(self) -> None:
os.makedirs('output_data')
generate_test_dir_1()
generate_test_dir_2()
def tearDown(self) -> None:
shutil.rmtree('output_data')
def test_empty_file_sn_fat12(self) -> None:
fatfs = fatfsgen.FATFS()
fatfs.create_file('TESTFILE')
fatfs.write_filesystem(CFG['output_file'])
file_system = fatfs.read_filesystem(CFG['output_file'])
self.assertEqual(file_system[0x2000:0x200c], b'TESTFILE \x20') # check entry name and type
self.assertEqual(file_system[0x1000:0x1006], b'\xf8\xff\xff\xff\x0f\x00') # check fat
def test_directory_sn_fat12(self) -> None:
fatfs = fatfsgen.FATFS()
fatfs.create_directory('TESTFOLD')
fatfs.write_filesystem(CFG['output_file'])
file_system = fatfs.read_filesystem(CFG['output_file'])
self.assertEqual(file_system[0x2000:0x200c], b'TESTFOLD \x10') # check entry name and type
self.assertEqual(file_system[0x1000:0x1006], b'\xf8\xff\xff\xff\x0f\x00') # check fat
self.assertEqual(file_system[0x6000:0x600c], b'. \x10') # reference to itself
self.assertEqual(file_system[0x6020:0x602c], b'.. \x10') # reference to parent
def test_empty_file_with_extension_sn_fat12(self) -> None:
fatfs = fatfsgen.FATFS()
fatfs.create_file('TESTF', extension='TXT')
fatfs.write_filesystem(CFG['output_file'])
file_system = fatfs.read_filesystem(CFG['output_file'])
self.assertEqual(file_system[0x2000:0x200c], b'TESTF TXT\x20') # check entry name and type
self.assertEqual(file_system[0x1000:0x1006], b'\xf8\xff\xff\xff\x0f\x00') # check fat
def test_write_to_file_with_extension_sn_fat12(self) -> None:
fatfs = fatfsgen.FATFS()
fatfs.create_file('WRITEF', extension='TXT')
fatfs.write_content(path_from_root=['WRITEF.TXT'], content='testcontent')
fatfs.write_filesystem(CFG['output_file'])
file_system = fatfs.read_filesystem(CFG['output_file'])
self.assertEqual(file_system[0x2000:0x200c], b'WRITEF TXT\x20') # check entry name and type
self.assertEqual(file_system[0x201a:0x2020], b'\x02\x00\x0b\x00\x00\x00') # check size and cluster ref
self.assertEqual(file_system[0x1000:0x1006], b'\xf8\xff\xff\xff\x0f\x00') # check fat
self.assertEqual(file_system[0x6000:0x600f], b'testcontent\x00\x00\x00\x00') # check file content
def test_write_to_file_in_folder_sn_fat12(self) -> None:
fatfs = fatfsgen.FATFS()
fatfs.create_directory('TESTFOLD')
fatfs.create_file('WRITEF', extension='TXT', path_from_root=['TESTFOLD'])
fatfs.write_content(path_from_root=['TESTFOLD', 'WRITEF.TXT'], content='testcontent')
fatfs.write_filesystem(CFG['output_file'])
file_system = fatfs.read_filesystem(CFG['output_file'])
self.assertEqual(file_system[0x2000:0x200c], b'TESTFOLD \x10')
self.assertEqual(
file_system[0x1000:0x1010],
b'\xf8\xff\xff\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
self.assertEqual(file_system[0x6040:0x6050], b'WRITEF TXT\x20\x00\x00\x01\x00')
self.assertEqual(file_system[0x605a:0x6060], b'\x03\x00\x0b\x00\x00\x00')
self.assertEqual(file_system[0x7000:0x700b], b'testcontent') # check file content
def test_cluster_setting_values(self) -> None:
fatfs = fatfsgen.FATFS()
fatfs.create_file('TESTFIL1')
fatfs.create_file('TESTFIL2')
fatfs.create_file('TESTFIL3')
fatfs.create_file('TESTFIL4')
fatfs.create_file('TESTFIL5')
fatfs.fat.clusters[2].set_in_fat(1000)
fatfs.fat.clusters[3].set_in_fat(4)
fatfs.fat.clusters[4].set_in_fat(5)
fatfs.write_filesystem(CFG['output_file'])
file_system = fatfs.read_filesystem(CFG['output_file'])
self.assertEqual(
file_system[0x1000:0x1010],
b'\xf8\xff\xff\xe8\x43\x00\x05\xf0\xff\xff\x0f\x00\x00\x00\x00\x00')
def test_full_sector_file(self) -> None:
fatfs = fatfsgen.FATFS()
fatfs.create_file('WRITEF', extension='TXT')
fatfs.write_content(path_from_root=['WRITEF.TXT'], content=CFG['sector_size'] * 'a')
fatfs.write_filesystem(CFG['output_file'])
file_system = fatfs.read_filesystem(CFG['output_file'])
self.assertEqual(file_system[0x1000: 0x100e], b'\xf8\xff\xff\xff\x0f\x00\x00\x00\x00\x00\x00\x00\x00\x00')
self.assertEqual(file_system[0x6000: 0x7000], CFG['sector_size'] * b'a')
def test_file_chaining(self) -> None:
fatfs = fatfsgen.FATFS()
fatfs.create_file('WRITEF', extension='TXT')
fatfs.write_content(path_from_root=['WRITEF.TXT'], content=CFG['sector_size'] * 'a' + 'a')
fatfs.write_filesystem(CFG['output_file'])
file_system = fatfs.read_filesystem(CFG['output_file'])
self.assertEqual(file_system[0x1000: 0x100e], b'\xf8\xff\xff\x03\xf0\xff\x00\x00\x00\x00\x00\x00\x00\x00')
self.assertEqual(file_system[0x7000: 0x8000], b'a' + (CFG['sector_size'] - 1) * b'\x00')
def test_full_sector_folder(self) -> None:
fatfs = fatfsgen.FATFS()
fatfs.create_directory('TESTFOLD')
for i in range(CFG['sector_size'] // CFG['entry_size']):
fatfs.create_file(f'A{str(i).upper()}', path_from_root=['TESTFOLD'])
fatfs.write_content(path_from_root=['TESTFOLD', 'A0'], content='first')
fatfs.write_content(path_from_root=['TESTFOLD', 'A126'], content='later')
fatfs.write_filesystem(CFG['output_file'])
file_system = fatfs.read_filesystem(CFG['output_file'])
self.assertEqual(file_system[0x1000: 0x10d0],
b'\xf8\xff\xff\x82\xf0\xff' + 192 * b'\xff' + 10 * b'\x00')
self.assertEqual(file_system[0x85000:0x85005], b'later')
self.assertEqual(file_system[0x86000:0x86010], b'A126 \x00\x00\x01\x00')
self.assertEqual(file_system[0x86020:0x86030], b'A127 \x00\x00\x01\x00')
def test_write_to_folder_in_folder_sn_fat12(self) -> None:
fatfs = fatfsgen.FATFS()
fatfs.create_directory('TESTFOLD')
fatfs.create_directory('TESTFOLL', path_from_root=['TESTFOLD'])
self.assertRaises(WriteDirectoryException, fatfs.write_content, path_from_root=['TESTFOLD', 'TESTFOLL'],
content='testcontent')
def test_write_non_existing_file_in_folder_sn_fat12(self) -> None:
fatfs = fatfsgen.FATFS()
fatfs.create_directory('TESTFOLD')
self.assertRaises(FileNotFoundError, fatfs.write_content, path_from_root=['TESTFOLD', 'AHOJ'],
content='testcontent')
@staticmethod
def create_too_many_files() -> None:
fatfs = fatfsgen.FATFS()
fatfs.create_directory('TESTFOLD')
for i in range(2 * CFG['sector_size'] // CFG['entry_size']):
fatfs.create_file(f'A{str(i).upper()}', path_from_root=['TESTFOLD'])
def test_too_many_files(self) -> None:
self.assertRaises(NoFreeClusterException, self.create_too_many_files)
def test_full_two_sectors_folder(self) -> None:
fatfs = fatfsgen.FATFS(size=2 * 1024 * 1024)
fatfs.create_directory('TESTFOLD')
for i in range(2 * CFG['sector_size'] // CFG['entry_size']):
fatfs.create_file(f'A{str(i).upper()}', path_from_root=['TESTFOLD'])
fatfs.write_content(path_from_root=['TESTFOLD', 'A253'], content='later')
fatfs.write_content(path_from_root=['TESTFOLD', 'A255'], content='last')
fatfs.write_filesystem(CFG['output_file'])
file_system = fatfs.read_filesystem(CFG['output_file'])
self.assertEqual(file_system[0x105000:0x105010], b'later\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
self.assertEqual(file_system[0x108000:0x108010], b'last\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
def test_lower_case_dir_short_names(self) -> None:
fatfs = fatfsgen.FATFS()
self.assertRaises(LowerCaseException, fatfs.create_directory, 'testfold')
def test_lower_case_file_short_names(self) -> None:
fatfs = fatfsgen.FATFS()
self.assertRaises(LowerCaseException, fatfs.create_file, 'newfile')
def test_too_long_name_dir_short_names(self) -> None:
fatfs = fatfsgen.FATFS()
self.assertRaises(TooLongNameException, fatfs.create_directory, 'TOOLONGNAME')
def test_fatfs16_detection(self) -> None:
fatfs = fatfsgen.FATFS(size=16 * 1024 * 1024)
self.assertEqual(fatfs.state.fatfs_type, 16)
def test_fatfs32_detection(self) -> None:
self.assertRaises(NotImplementedError, fatfsgen.FATFS, size=256 * 1024 * 1024)
def test_deep_structure(self) -> None:
fatfs = fatfsgen.FATFS()
fatfs.create_directory('TESTFOLD')
fatfs.create_directory('TESTFOLL', path_from_root=['TESTFOLD'])
fatfs.create_directory('TESTFOLO', path_from_root=['TESTFOLD', 'TESTFOLL'])
fatfs.create_file('WRITEF', extension='TXT', path_from_root=['TESTFOLD', 'TESTFOLL', 'TESTFOLO'])
fatfs.write_content(path_from_root=['TESTFOLD', 'TESTFOLL', 'TESTFOLO', 'WRITEF.TXT'], content='later')
fatfs.write_filesystem(CFG['output_file'])
file_system = fatfs.read_filesystem(CFG['output_file'])
self.assertEqual(file_system[0x9000:0x9010], b'later\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
def test_same_name_deep_structure(self) -> None:
fatfs = fatfsgen.FATFS()
fatfs.create_directory('TESTFOLD')
fatfs.create_directory('TESTFOLD', path_from_root=['TESTFOLD'])
fatfs.create_directory('TESTFOLD', path_from_root=['TESTFOLD', 'TESTFOLD'])
fatfs.create_file('WRITEF', extension='TXT', path_from_root=['TESTFOLD', 'TESTFOLD', 'TESTFOLD'])
fatfs.write_content(path_from_root=['TESTFOLD', 'TESTFOLD', 'TESTFOLD', 'WRITEF.TXT'], content='later')
fatfs.write_filesystem(CFG['output_file'])
file_system = fatfs.read_filesystem(CFG['output_file'])
self.assertEqual(file_system[0x2000:0x2010], b'TESTFOLD \x10\x00\x00\x01\x00')
self.assertEqual(file_system[0x2010:0x2020], b'!\x00\x00\x00\x00\x00\x01\x00\x01\x00\x02\x00\x00\x00\x00\x00')
self.assertEqual(file_system[0x6040:0x6050], b'TESTFOLD \x10\x00\x00\x01\x00')
self.assertEqual(file_system[0x6040:0x6050], b'TESTFOLD \x10\x00\x00\x01\x00')
self.assertEqual(file_system[0x7040:0x7050], b'TESTFOLD \x10\x00\x00\x01\x00')
self.assertEqual(file_system[0x8040:0x8050], b'WRITEF TXT \x00\x00\x01\x00')
self.assertEqual(file_system[0x9000:0x9010], b'later\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
def test_e2e_deep_folder_into_image(self) -> None:
fatfs = fatfsgen.FATFS()
fatfs.generate(CFG['test_dir'])
fatfs.write_filesystem(CFG['output_file'])
file_system = fatfs.read_filesystem(CFG['output_file'])
self.assertEqual(file_system[0x6060:0x6070], b'TESTFIL2 \x00\x00\x01\x00')
self.assertEqual(file_system[0x6070:0x6080], b'!\x00\x00\x00\x00\x00\x01\x00\x01\x00\x05\x00\x0b\x00\x00\x00')
self.assertEqual(file_system[0x7040:0x7050], b'LASTFILE \x00\x00\x01\x00')
self.assertEqual(file_system[0x8000:0x8010], b'deeptest\n\x00\x00\x00\x00\x00\x00\x00')
self.assertEqual(file_system[0x9000:0x9010], b'thisistest\n\x00\x00\x00\x00\x00')
self.assertEqual(file_system[0xa000:0xa010], b'ahoj\n\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
def test_e2e_deep_folder_into_image_ext(self) -> None:
fatfs = fatfsgen.FATFS()
fatfs.generate(CFG['test_dir2'])
fatfs.write_filesystem(CFG['output_file'])
file_system = fatfs.read_filesystem(CFG['output_file'])
self.assertEqual(file_system[0x2020:0x2030], b'TESTFILE \x00\x00\x01\x00')
self.assertEqual(file_system[0x6060:0x6070], b'TESTFIL2 \x00\x00\x01\x00')
self.assertEqual(file_system[0x7000:0x7010], b'. \x10\x00\x00\x01\x00')
self.assertEqual(file_system[0x7040:0x7050], b'LASTFILETXT \x00\x00\x01\x00')
self.assertEqual(file_system[0x8000:0x8010], b'deeptest\n\x00\x00\x00\x00\x00\x00\x00')
self.assertEqual(file_system[0x9000:0x9010], b'thisistest\n\x00\x00\x00\x00\x00')
self.assertEqual(file_system[0xa000:0xa010], b'ahoj\n\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
self.assertEqual(file_system[0xb000:0xb009], b'\xff\xff\xff\xff\xff\xff\xff\xff\xff')
if __name__ == '__main__':
unittest.main()
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