mirror of
https://github.com/espressif/esp-idf.git
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280 lines
11 KiB
Python
280 lines
11 KiB
Python
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# SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
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# SPDX-License-Identifier: Apache-2.0
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# pylint: disable=W0621 # redefined-outer-name
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import hashlib
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import logging
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import os
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import subprocess
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import sys
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from typing import Any, Dict, List, TextIO
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import pexpect
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import pytest
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from _pytest.fixtures import FixtureRequest
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from _pytest.monkeypatch import MonkeyPatch
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from pygdbmi.gdbcontroller import GdbController, GdbTimeoutError, NoGdbProcessError
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from pytest_embedded_idf.app import IdfApp
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from pytest_embedded_idf.dut import IdfDut
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from pytest_embedded_idf.serial import IdfSerial
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def sha256(file: str) -> str:
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res = hashlib.sha256()
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with open(file, 'rb') as fr:
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res.update(fr.read())
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return res.hexdigest()
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class PanicTestDut(IdfDut):
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BOOT_CMD_ADDR = 0x9000
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BOOT_CMD_SIZE = 0x1000
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DEFAULT_EXPECT_TIMEOUT = 10
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COREDUMP_UART_START = '================= CORE DUMP START ================='
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COREDUMP_UART_END = '================= CORE DUMP END ================='
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app: IdfApp
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serial: IdfSerial
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def __init__(self, *args, **kwargs) -> None: # type: ignore
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super().__init__(*args, **kwargs)
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self.gdb: GdbController = None # type: ignore
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# record this since pygdbmi is using logging.debug to generate some single character mess
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self.log_level = logging.getLogger().level
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# pygdbmi is using logging.debug to generate some single character mess
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if self.log_level <= logging.DEBUG:
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logging.getLogger().setLevel(logging.INFO)
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self.coredump_output: TextIO = None # type: ignore
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def close(self) -> None:
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if self.gdb:
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self.gdb.exit()
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super().close()
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def revert_log_level(self) -> None:
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logging.getLogger().setLevel(self.log_level)
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def expect_test_func_name(self, test_func_name: str) -> None:
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self.expect_exact('Enter test name:')
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self.write(test_func_name)
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self.expect_exact('Got test name: ' + test_func_name)
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def expect_none(self, pattern, **kwargs) -> None: # type: ignore
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"""like dut.expect_all, but with an inverse logic"""
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if 'timeout' not in kwargs:
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kwargs['timeout'] = 1
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try:
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res = self.expect(pattern, **kwargs)
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raise AssertionError(f'Unexpected: {res.group().decode("utf8")}')
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except pexpect.TIMEOUT:
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pass
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def expect_backtrace(self) -> None:
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self.expect_exact('Backtrace:')
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self.expect_none('CORRUPTED')
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def expect_gme(self, reason: str) -> None:
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"""Expect method for Guru Meditation Errors"""
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self.expect_exact(f"Guru Meditation Error: Core 0 panic'ed ({reason})")
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def expect_reg_dump(self, core: int = 0) -> None:
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"""Expect method for the register dump"""
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self.expect(r'Core\s+%d register dump:' % core)
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def expect_elf_sha256(self) -> None:
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"""Expect method for ELF SHA256 line"""
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elf_sha256 = sha256(self.app.elf_file)
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elf_sha256_len = int(
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self.app.sdkconfig.get('CONFIG_APP_RETRIEVE_LEN_ELF_SHA', '16')
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)
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self.expect_exact('ELF file SHA256: ' + elf_sha256[0:elf_sha256_len])
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def _call_espcoredump(
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self, extra_args: List[str], coredump_file_name: str, output_file_name: str
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) -> None:
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# no "with" here, since we need the file to be open for later inspection by the test case
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if not self.coredump_output:
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self.coredump_output = open(output_file_name, 'w')
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espcoredump_script = os.path.join(
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os.environ['IDF_PATH'], 'components', 'espcoredump', 'espcoredump.py'
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)
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espcoredump_args = [
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sys.executable,
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espcoredump_script,
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'info_corefile',
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'--core',
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coredump_file_name,
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]
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espcoredump_args += extra_args
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espcoredump_args.append(self.app.elf_file)
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logging.info('Running %s', ' '.join(espcoredump_args))
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logging.info('espcoredump output is written to %s', self.coredump_output.name)
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subprocess.check_call(espcoredump_args, stdout=self.coredump_output)
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self.coredump_output.flush()
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self.coredump_output.seek(0)
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def process_coredump_uart(self) -> None:
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"""Extract the core dump from UART output of the test, run espcoredump on it"""
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self.expect(self.COREDUMP_UART_START)
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res = self.expect('(.+)' + self.COREDUMP_UART_END)
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coredump_base64 = res.group(1).decode('utf8')
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with open(os.path.join(self.logdir, 'coredump_data.b64'), 'w') as coredump_file:
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logging.info('Writing UART base64 core dump to %s', coredump_file.name)
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coredump_file.write(coredump_base64)
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output_file_name = os.path.join(self.logdir, 'coredump_uart_result.txt')
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self._call_espcoredump(
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['--core-format', 'b64'], coredump_file.name, output_file_name
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)
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def process_coredump_flash(self) -> None:
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"""Extract the core dump from flash, run espcoredump on it"""
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coredump_file_name = os.path.join(self.logdir, 'coredump_data.bin')
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logging.info('Writing flash binary core dump to %s', coredump_file_name)
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self.serial.dump_flash(coredump_file_name, partition='coredump')
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output_file_name = os.path.join(self.logdir, 'coredump_flash_result.txt')
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self._call_espcoredump(
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['--core-format', 'raw'], coredump_file_name, output_file_name
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)
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def gdb_write(self, command: str) -> Any:
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"""
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Wrapper to write to gdb with a longer timeout, as test runner
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host can be slow sometimes
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"""
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return self.gdb.write(command, timeout_sec=10)
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def start_gdb(self) -> None:
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"""
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Runs GDB and connects it to the "serial" port of the DUT.
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After this, the DUT expect methods can no longer be used to capture output.
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"""
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self.gdb = GdbController(gdb_path=self.toolchain_prefix + 'gdb')
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# pygdbmi logs to console by default, make it log to a file instead
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pygdbmi_log_file_name = os.path.join(self.logdir, 'pygdbmi_log.txt')
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pygdbmi_logger = self.gdb.logger
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pygdbmi_logger.setLevel(logging.DEBUG)
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while pygdbmi_logger.hasHandlers():
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pygdbmi_logger.removeHandler(pygdbmi_logger.handlers[0])
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log_handler = logging.FileHandler(pygdbmi_log_file_name)
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log_handler.setFormatter(
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logging.Formatter('%(asctime)s %(levelname)s: %(message)s')
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)
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pygdbmi_logger.addHandler(log_handler)
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logging.info('Running command: %s', self.gdb.get_subprocess_cmd())
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for _ in range(10):
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try:
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# GdbController creates a process with subprocess.Popen(). Is it really running? It is probable that
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# an RPI under high load will get non-responsive during creating a lot of processes.
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resp = self.gdb.get_gdb_response(
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timeout_sec=10
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) # calls verify_valid_gdb_subprocess() internally
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# it will be interesting to look up this response if the next GDB command fails (times out)
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logging.info('GDB response: %s', resp)
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break # success
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except GdbTimeoutError:
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logging.warning(
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'GDB internal error: cannot get response from the subprocess'
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)
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except NoGdbProcessError:
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logging.error('GDB internal error: process is not running')
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break # failure - TODO: create another GdbController
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except ValueError:
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logging.error(
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'GDB internal error: select() returned an unexpected file number'
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)
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# Set up logging for GDB remote protocol
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gdb_remotelog_file_name = os.path.join(self.logdir, 'gdb_remote_log.txt')
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self.gdb_write('-gdb-set remotelogfile ' + gdb_remotelog_file_name)
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# Load the ELF file
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self.gdb_write('-file-exec-and-symbols {}'.format(self.app.elf_file))
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# Connect GDB to UART
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self.serial.proc.close()
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logging.info('Connecting to GDB Stub...')
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self.gdb_write('-gdb-set serial baud 115200')
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responses = self.gdb_write('-target-select remote ' + self.serial.port)
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# Make sure we get the 'stopped' notification
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stop_response = self.find_gdb_response('stopped', 'notify', responses)
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if not stop_response:
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responses = self.gdb_write('-exec-interrupt')
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stop_response = self.find_gdb_response('stopped', 'notify', responses)
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assert stop_response
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frame = stop_response['payload']['frame']
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if 'file' not in frame:
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frame['file'] = '?'
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if 'line' not in frame:
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frame['line'] = '?'
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logging.info('Stopped in {func} at {addr} ({file}:{line})'.format(**frame))
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# Drain remaining responses
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self.gdb.get_gdb_response(raise_error_on_timeout=False)
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def gdb_backtrace(self) -> Any:
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"""
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Returns the list of stack frames for the current thread.
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Each frame is a dictionary, refer to pygdbmi docs for the format.
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"""
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assert self.gdb
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responses = self.gdb_write('-stack-list-frames')
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return self.find_gdb_response('done', 'result', responses)['payload']['stack']
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@staticmethod
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def match_backtrace(
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gdb_backtrace: List[Any], expected_functions_list: List[Any]
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) -> bool:
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"""
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Returns True if the function names listed in expected_functions_list match the backtrace
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given by gdb_backtrace argument. The latter is in the same format as returned by gdb_backtrace()
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function.
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"""
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return all(
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[
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frame['func'] == expected_functions_list[i]
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for i, frame in enumerate(gdb_backtrace)
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]
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)
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@staticmethod
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def find_gdb_response(
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message: str, response_type: str, responses: List[Any]
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) -> Any:
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"""
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Helper function which extracts one response from an array of GDB responses, filtering
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by message and type. Returned message is a dictionary, refer to pygdbmi docs for the format.
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"""
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def match_response(response: Dict[str, Any]) -> bool:
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return response['message'] == message and response['type'] == response_type # type: ignore
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filtered_responses = [r for r in responses if match_response(r)]
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if not filtered_responses:
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return None
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return filtered_responses[0]
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@pytest.fixture(scope='module')
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def monkeypatch_module(request: FixtureRequest) -> MonkeyPatch:
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mp = MonkeyPatch()
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request.addfinalizer(mp.undo)
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return mp
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@pytest.fixture(scope='module', autouse=True)
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def replace_dut_class(monkeypatch_module: MonkeyPatch) -> None:
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monkeypatch_module.setattr('pytest_embedded_idf.dut.IdfDut', PanicTestDut)
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