Module hug.test

hug/test.py.

Defines utility function that aid in the round-trip testing of Hug APIs

Copyright (C) 2016 Timothy Edmund Crosley

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

View Source
"""hug/test.py.

Defines utility function that aid in the round-trip testing of Hug APIs

Copyright (C) 2016  Timothy Edmund Crosley

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated

documentation files (the "Software"), to deal in the Software without restriction, including without limitation

the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and

to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or

substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED

TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL

THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF

CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

OTHER DEALINGS IN THE SOFTWARE.

"""

from __future__ import absolute_import

import ast

import sys

from functools import partial

from io import BytesIO

from unittest import mock

from urllib.parse import urlencode

from falcon import HTTP_METHODS

from falcon.testing import DEFAULT_HOST, StartResponseMock, create_environ

from hug import output_format

from hug.api import API

from hug.json_module import json

def _internal_result(raw_response):

    try:

        return raw_response[0].decode("utf8")

    except TypeError:

        data = BytesIO()

        for chunk in raw_response:

            data.write(chunk)

        data = data.getvalue()

        try:

            return data.decode("utf8")

        except UnicodeDecodeError:  # pragma: no cover

            return data

    except (UnicodeDecodeError, AttributeError):

        return raw_response[0]

def call(

    method,

    api_or_module,

    url,

    body="",

    headers=None,

    params=None,

    query_string="",

    scheme="http",

    host=DEFAULT_HOST,

    **kwargs

):

    """Simulates a round-trip call against the given API / URL"""

    api = API(api_or_module).http.server()

    response = StartResponseMock()

    headers = {} if headers is None else headers

    if not isinstance(body, str) and "json" in headers.get("content-type", "application/json"):

        body = output_format.json(body)

        headers.setdefault("content-type", "application/json")

    params = params if params else {}

    params.update(kwargs)

    if params:

        query_string = "{}{}{}".format(

            query_string, "&" if query_string else "", urlencode(params, True)

        )

    result = api(

        create_environ(

            path=url,

            method=method,

            headers=headers,

            query_string=query_string,

            body=body,

            scheme=scheme,

            host=host,

        ),

        response,

    )

    if result:

        response.data = _internal_result(result)

        response.content_type = response.headers_dict["content-type"]

        if "application/json" in response.content_type:

            response.data = json.loads(response.data)

    return response

for method in HTTP_METHODS:

    tester = partial(call, method)

    tester.__doc__ = """Simulates a round-trip HTTP {0} against the given API / URL""".format(

        method.upper()

    )

    globals()[method.lower()] = tester

def cli(method, *args, api=None, module=None, **arguments):

    """Simulates testing a hug cli method from the command line"""

    collect_output = arguments.pop("collect_output", True)

    if api and module:

        raise ValueError("Please specify an API OR a Module that contains the API, not both")

    elif api or module:

        method = API(api or module).cli.commands[method].interface._function

    command_args = [method.__name__] + list(args)

    for name, values in arguments.items():

        if not isinstance(values, (tuple, list)):

            values = (values,)

        for value in values:

            command_args.append("--{0}".format(name))

            if not value in (True, False):

                command_args.append("{0}".format(value))

    old_sys_argv = sys.argv

    sys.argv = [str(part) for part in command_args]

    old_outputs = method.interface.cli.outputs

    if collect_output:

        method.interface.cli.outputs = lambda data: to_return.append(old_outputs(data))

    to_return = []

    try:

        method.interface.cli()

    except Exception as e:

        to_return = (e,)

    method.interface.cli.outputs = old_outputs

    sys.argv = old_sys_argv

    if to_return:

        result = _internal_result(to_return)

        try:

            result = json.loads(result)

        except Exception:

            try:

                result = ast.literal_eval(result)

            except Exception:

                pass

        return result

Variables

DEFAULT_HOST
HTTP_METHODS
connect
delete
get
head
method
options
patch
post
put
tester
trace

Functions

call

def call(
    method,
    api_or_module,
    url,
    body='',
    headers=None,
    params=None,
    query_string='',
    scheme='http',
    host='falconframework.org',
    **kwargs
)

Simulates a round-trip call against the given API / URL

View Source
def call(

    method,

    api_or_module,

    url,

    body="",

    headers=None,

    params=None,

    query_string="",

    scheme="http",

    host=DEFAULT_HOST,

    **kwargs

):

    """Simulates a round-trip call against the given API / URL"""

    api = API(api_or_module).http.server()

    response = StartResponseMock()

    headers = {} if headers is None else headers

    if not isinstance(body, str) and "json" in headers.get("content-type", "application/json"):

        body = output_format.json(body)

        headers.setdefault("content-type", "application/json")

    params = params if params else {}

    params.update(kwargs)

    if params:

        query_string = "{}{}{}".format(

            query_string, "&" if query_string else "", urlencode(params, True)

        )

    result = api(

        create_environ(

            path=url,

            method=method,

            headers=headers,

            query_string=query_string,

            body=body,

            scheme=scheme,

            host=host,

        ),

        response,

    )

    if result:

        response.data = _internal_result(result)

        response.content_type = response.headers_dict["content-type"]

        if "application/json" in response.content_type:

            response.data = json.loads(response.data)

    return response

cli

def cli(
    method,
    *args,
    api=None,
    module=None,
    **arguments
)

Simulates testing a hug cli method from the command line

View Source
def cli(method, *args, api=None, module=None, **arguments):

    """Simulates testing a hug cli method from the command line"""

    collect_output = arguments.pop("collect_output", True)

    if api and module:

        raise ValueError("Please specify an API OR a Module that contains the API, not both")

    elif api or module:

        method = API(api or module).cli.commands[method].interface._function

    command_args = [method.__name__] + list(args)

    for name, values in arguments.items():

        if not isinstance(values, (tuple, list)):

            values = (values,)

        for value in values:

            command_args.append("--{0}".format(name))

            if not value in (True, False):

                command_args.append("{0}".format(value))

    old_sys_argv = sys.argv

    sys.argv = [str(part) for part in command_args]

    old_outputs = method.interface.cli.outputs

    if collect_output:

        method.interface.cli.outputs = lambda data: to_return.append(old_outputs(data))

    to_return = []

    try:

        method.interface.cli()

    except Exception as e:

        to_return = (e,)

    method.interface.cli.outputs = old_outputs

    sys.argv = old_sys_argv

    if to_return:

        result = _internal_result(to_return)

        try:

            result = json.loads(result)

        except Exception:

            try:

                result = ast.literal_eval(result)

            except Exception:

                pass

        return result