forked from extern/httpie-cli
312 lines
8.8 KiB
Python
312 lines
8.8 KiB
Python
# coding=utf-8
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"""Utilities for HTTPie test suite."""
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import re
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import shlex
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import sys
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import time
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import json
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import tempfile
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from io import BytesIO
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from pathlib import Path
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from typing import Optional, Union, List
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from httpie.status import ExitStatus
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from httpie.config import Config
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from httpie.context import Environment
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from httpie.core import main
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# pytest-httpbin currently does not support chunked requests:
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# <https://github.com/kevin1024/pytest-httpbin/issues/33>
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# <https://github.com/kevin1024/pytest-httpbin/issues/28>
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HTTPBIN_WITH_CHUNKED_SUPPORT = 'http://pie.dev'
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TESTS_ROOT = Path(__file__).parent.parent
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CRLF = '\r\n'
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COLOR = '\x1b['
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HTTP_OK = '200 OK'
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# noinspection GrazieInspection
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HTTP_OK_COLOR = (
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'HTTP\x1b[39m\x1b[38;5;245m/\x1b[39m\x1b'
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'[38;5;37m1.1\x1b[39m\x1b[38;5;245m \x1b[39m\x1b[38;5;37m200'
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'\x1b[39m\x1b[38;5;245m \x1b[39m\x1b[38;5;136mOK'
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)
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def mk_config_dir() -> Path:
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dirname = tempfile.mkdtemp(prefix='httpie_config_')
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return Path(dirname)
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def add_auth(url, auth):
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proto, rest = url.split('://', 1)
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return proto + '://' + auth + '@' + rest
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class StdinBytesIO(BytesIO):
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"""To be used for `MockEnvironment.stdin`"""
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len = 0 # See `prepare_request_body()`
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class MockEnvironment(Environment):
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"""Environment subclass with reasonable defaults for testing."""
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colors = 0 # For easier debugging
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stdin_isatty = True,
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stdout_isatty = True
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is_windows = False
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def __init__(self, create_temp_config_dir=True, **kwargs):
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if 'stdout' not in kwargs:
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kwargs['stdout'] = tempfile.TemporaryFile(
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mode='w+b',
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prefix='httpie_stdout'
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)
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if 'stderr' not in kwargs:
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kwargs['stderr'] = tempfile.TemporaryFile(
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mode='w+t',
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prefix='httpie_stderr'
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)
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super().__init__(**kwargs)
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self._create_temp_config_dir = create_temp_config_dir
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self._delete_config_dir = False
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self._temp_dir = Path(tempfile.gettempdir())
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@property
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def config(self) -> Config:
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if (self._create_temp_config_dir
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and self._temp_dir not in self.config_dir.parents):
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self.create_temp_config_dir()
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return super().config
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def create_temp_config_dir(self):
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self.config_dir = mk_config_dir()
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self._delete_config_dir = True
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def cleanup(self):
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self.stdout.close()
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self.stderr.close()
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if self._delete_config_dir:
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assert self._temp_dir in self.config_dir.parents
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from shutil import rmtree
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rmtree(self.config_dir, ignore_errors=True)
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def __del__(self):
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# noinspection PyBroadException
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try:
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self.cleanup()
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except Exception:
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pass
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class BaseCLIResponse:
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"""
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Represents the result of simulated `$ http' invocation via `http()`.
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Holds and provides access to:
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- stdout output: print(self)
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- stderr output: print(self.stderr)
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- devnull output: print(self.devnull)
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- exit_status output: print(self.exit_status)
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"""
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stderr: str = None
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devnull: str = None
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json: dict = None
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exit_status: ExitStatus = None
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command: str = None
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args: List[str] = []
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complete_args: List[str] = []
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@property
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def command(self):
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cmd = ' '.join(shlex.quote(arg) for arg in ['http', *self.args])
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# pytest-httpbin to real httpbin.
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return re.sub(r'127\.0\.0\.1:\d+', 'httpbin.org', cmd)
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class BytesCLIResponse(bytes, BaseCLIResponse):
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"""
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Used as a fallback when a StrCLIResponse cannot be used.
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E.g. when the output contains binary data or when it is colorized.
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`.json` will always be None.
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"""
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class StrCLIResponse(str, BaseCLIResponse):
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@property
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def json(self) -> Optional[dict]:
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"""
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Return deserialized the request or response JSON body,
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if one (and only one) included in the output and is parsable.
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"""
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if not hasattr(self, '_json'):
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self._json = None
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# De-serialize JSON body if possible.
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if COLOR in self:
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# Colorized output cannot be parsed.
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pass
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elif self.strip().startswith('{'):
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# Looks like JSON body.
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self._json = json.loads(self)
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elif self.count('Content-Type:') == 1:
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# Looks like a HTTP message,
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# try to extract JSON from its body.
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try:
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j = self.strip()[self.strip().rindex('\r\n\r\n'):]
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except ValueError:
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pass
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else:
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try:
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# noinspection PyAttributeOutsideInit
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self._json = json.loads(j)
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except ValueError:
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pass
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return self._json
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class ExitStatusError(Exception):
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pass
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def http(
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*args,
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program_name='http',
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tolerate_error_exit_status=False,
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**kwargs,
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) -> Union[StrCLIResponse, BytesCLIResponse]:
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# noinspection PyUnresolvedReferences
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"""
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Run HTTPie and capture stderr/out and exit status.
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Content writtent to devnull will be captured only if
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env.devnull is set manually.
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Invoke `httpie.core.main()` with `args` and `kwargs`,
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and return a `CLIResponse` subclass instance.
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The return value is either a `StrCLIResponse`, or `BytesCLIResponse`
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if unable to decode the output. Devnull is string when possible,
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bytes otherwise.
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The response has the following attributes:
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`stdout` is represented by the instance itself (print r)
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`stderr`: text written to stderr
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`devnull` text written to devnull.
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`exit_status`: the exit status
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`json`: decoded JSON (if possible) or `None`
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Exceptions are propagated.
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If you pass ``tolerate_error_exit_status=True``, then error exit statuses
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won't result into an exception.
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Example:
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$ http --auth=user:password GET pie.dev/basic-auth/user/password
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>>> httpbin = getfixture('httpbin')
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>>> r = http('-a', 'user:pw', httpbin.url + '/basic-auth/user/pw')
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>>> type(r) == StrCLIResponse
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True
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>>> r.exit_status
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<ExitStatus.SUCCESS: 0>
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>>> r.stderr
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''
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>>> 'HTTP/1.1 200 OK' in r
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True
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>>> r.json == {'authenticated': True, 'user': 'user'}
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True
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"""
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env = kwargs.get('env')
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if not env:
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env = kwargs['env'] = MockEnvironment()
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stdout = env.stdout
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stderr = env.stderr
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devnull = env.devnull
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args = list(args)
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args_with_config_defaults = args + env.config.default_options
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add_to_args = []
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if '--debug' not in args_with_config_defaults:
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if (not tolerate_error_exit_status
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and '--traceback' not in args_with_config_defaults):
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add_to_args.append('--traceback')
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if not any('--timeout' in arg for arg in args_with_config_defaults):
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add_to_args.append('--timeout=3')
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complete_args = [program_name, *add_to_args, *args]
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# print(' '.join(complete_args))
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def dump_stderr():
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stderr.seek(0)
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sys.stderr.write(stderr.read())
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try:
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try:
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exit_status = main(args=complete_args, **kwargs)
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if '--download' in args:
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# Let the progress reporter thread finish.
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time.sleep(.5)
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except SystemExit:
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if tolerate_error_exit_status:
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exit_status = ExitStatus.ERROR
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else:
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dump_stderr()
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raise
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except Exception:
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stderr.seek(0)
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sys.stderr.write(stderr.read())
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raise
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else:
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if (not tolerate_error_exit_status
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and exit_status != ExitStatus.SUCCESS):
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dump_stderr()
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raise ExitStatusError(
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'httpie.core.main() unexpectedly returned'
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f' a non-zero exit status: {exit_status}'
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)
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stdout.seek(0)
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stderr.seek(0)
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devnull.seek(0)
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output = stdout.read()
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devnull_output = devnull.read()
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try:
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output = output.decode('utf8')
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except UnicodeDecodeError:
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r = BytesCLIResponse(output)
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else:
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r = StrCLIResponse(output)
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try:
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devnull_output = devnull_output.decode('utf8')
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except Exception:
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pass
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r.devnull = devnull_output
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r.stderr = stderr.read()
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r.exit_status = exit_status
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r.args = args
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r.complete_args = ' '.join(complete_args)
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if r.exit_status != ExitStatus.SUCCESS:
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sys.stderr.write(r.stderr)
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# print(f'\n\n$ {r.command}\n')
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return r
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finally:
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devnull.close()
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stdout.close()
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stderr.close()
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env.cleanup()
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