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esp-idf/tools/test_apps/storage/fatfsgen/pytest_fatfsgen_example.py
2025-03-12 14:45:39 +01:00

232 lines
8.2 KiB
Python

# SPDX-FileCopyrightText: 2022-2025 Espressif Systems (Shanghai) CO LTD
# SPDX-License-Identifier: Unlicense OR CC0-1.0
import os
import re
import shutil
import sys
import typing as t
from datetime import datetime
from subprocess import run
from subprocess import STDOUT
from time import sleep
import pytest
from pytest_embedded import Dut
from pytest_embedded_idf.utils import idf_parametrize
idf_path = os.environ['IDF_PATH'] # get value of IDF_PATH from environment
parttool_dir = os.path.join(idf_path, 'components', 'partition_table')
sys.path.append(parttool_dir)
from parttool import PartitionName, ParttoolTarget # noqa E402 # pylint: disable=C0413
FileStructure = t.Dict[str, t.Union[t.Optional[str], 'FileStructure']]
class DirectoryStructureError(Exception):
"""Base exception for directory structure errors."""
pass
class MissingStructureError(DirectoryStructureError):
"""Raised when a directory or file is missing."""
pass
class ContentMismatchError(DirectoryStructureError):
"""Raised when a file's content does not match the expected content."""
pass
class IOErrorInStructure(DirectoryStructureError):
"""Raised when an I/O error occurs during structure validation."""
pass
def validate_directory_structure(base_path: str, expected_structure: FileStructure) -> None:
"""
Checks if the directory structure
and file contents match the expected structure.
:param base_path: The root directory to check.
:param expected_structure: A nested dictionary representing
the expected structure.
Keys are folder names or file names.
For files, values are either:
- None (skip content check) or
- string (expected content).
For folders values are dictionaries defining
their structure.
:raises DirectoryStructureError: If the structure or contents do not match.
"""
def normalize_case(items: t.List[str]) -> t.Dict[str, str]:
return {item.lower(): item for item in items}
def escape_output(text: str) -> str:
return text.replace('"', '"').replace('\n', '\\n').replace('\t', '\\t').replace('\r', '\\r')
def validate_structure(current_path: str, structure: FileStructure) -> None:
current_items = os.listdir(current_path)
normalized_items = normalize_case(current_items)
for name, substructure in structure.items():
expected_name = normalized_items.get(name.lower())
if not expected_name:
raise MissingStructureError(f'Missing item: {os.path.join(current_path, name)}')
full_path = os.path.join(current_path, expected_name)
# File
if isinstance(substructure, str) or substructure is None:
if not os.path.isfile(full_path):
raise MissingStructureError(f'Missing file: {full_path}')
if isinstance(substructure, str): # Check file content
try:
with open(full_path, 'r', encoding='utf-8') as file:
content = file.read()
if content != substructure:
raise ContentMismatchError(
f'Content mismatch in file: {full_path}\n'
f'Expected: "{escape_output(substructure)}"\n'
f'Found: "{escape_output(content)}"'
)
except OSError as e:
raise IOErrorInStructure(f'Error reading file {full_path}: {e}')
# Folder
elif isinstance(substructure, dict):
if not os.path.isdir(full_path):
raise MissingStructureError(f'Missing directory: {full_path}')
# Recursively check the subdirectory
validate_structure(full_path, substructure)
else:
raise DirectoryStructureError(f'Invalid structure definition for {name}.')
validate_structure(base_path, expected_structure)
@pytest.mark.generic
@pytest.mark.parametrize(
'config',
[
'test_read_only_partition_gen',
'test_read_only_partition_gen_default_dt',
'test_read_only_partition_gen_ln',
'test_read_only_partition_gen_ln_default_dt',
'test_read_write_partition_gen',
'test_read_write_partition_gen_default_dt',
'test_read_write_partition_gen_ln',
'test_read_write_partition_gen_ln_default_dt',
],
indirect=True,
)
@idf_parametrize('target', ['esp32'], indirect=['target'])
def test_examples_fatfsgen(config: str, dut: Dut) -> None:
# Default timeout - a bit overkill, but better than failing tests
timeout = 600
def expect(msg: str, timeout: int = timeout) -> None:
dut.expect(msg, timeout=timeout)
# Expects list of strings sequentially
def expect_all(msg_list: t.List[str], timeout: int = timeout) -> None:
for msg in msg_list:
expect(msg, timeout)
# Expects prefix string followed by date in the format 'yyyy-mm-dd'
def expect_date(prefix: str, timeout: int = timeout) -> datetime:
expect_str = prefix + '(\\d+)-(\\d+)-(\\d+)'
match_ = dut.expect(re.compile(str.encode(expect_str)), timeout=timeout)
year_ = int(match_[1].decode())
month_ = int(match_[2].decode())
day_ = int(match_[3].decode())
return datetime(year_, month_, day_)
# Calculates absolute difference in days
# between date_reference and date_actual.
# Raises exception if difference exceeds date_tolerance
# 30 days by default,
def check_dates(date_reference: datetime, date_actual: datetime, days_date_tolerance: int = 30) -> None:
td = date_actual - date_reference
if abs(td.days) > days_date_tolerance:
raise Exception(
f'Too big date difference. \
Actual: {date_actual}, \
reference: {date_reference}, \
date_tolerance: {days_date_tolerance} day(s)'
)
fatfs_parser_path = os.path.join(idf_path, 'components', 'fatfs', 'fatfsparse.py')
config_read_only = '_read_only' in config
config_long_names = '_ln' in config
config_default_date = '_default_dt' in config
expect('example: Mounting FAT filesystem')
if not config_read_only:
expect_all([
'example: Opening file',
'example: File written',
'example: Reading file',
'example: Read from file: ' + "'This is written by the device'",
])
expect('example: Reading file')
stat_filename = 'sublongnames/testlongfilenames.txt' if config_long_names else 'sub/test.txt'
modification_date = expect_date(f"The file '/spiflash/{stat_filename}' was modified at date: ")
date_ref = datetime(1980, 1, 1) if config_default_date else datetime.today()
check_dates(date_ref, modification_date)
expect_all(['example: Unmounting FAT filesystem', 'example: Done'])
dut.serial.close()
sleep(1)
target = ParttoolTarget(dut.serial.port, 1843200)
target.read_partition(PartitionName('storage'), 'temp.img')
if config_long_names:
run(['python', fatfs_parser_path, '--long-name-support', 'temp.img'], stderr=STDOUT)
else:
run(['python', fatfs_parser_path, 'temp.img'], stderr=STDOUT)
long_names_read_only: FileStructure = {
'sublongnames': {
'testlongfilenames.txt': 'this is test; long name it has\n',
},
'hellolongname.txt': 'This is generated on the host; long name it has\n',
}
short_names_read_only: FileStructure = {
'sub': {
'test.txt': 'this is test\n',
},
'hello.txt': 'This is generated on the host\n',
}
file_structure: FileStructure = long_names_read_only if config_long_names else short_names_read_only
if not config_read_only and not config_long_names:
file_structure['inner.txt'] = 'This is written by the device'
try:
validate_directory_structure('Espressif', file_structure)
finally:
shutil.rmtree('Espressif', ignore_errors=True)