PK! aa AUTHORS.rstAuthors ======= - \H. Turgut Uyar - Talha Çolakoğlu PK!< HISTORY.rstHistory ======= 1.1.2 (2019-03-07) ------------------ - Install enum34 only on Python 2.7. 1.1.1 (2019-03-07) ------------------ - Add enum34 dependency for Python 2.7. - Minor bug fixes. 1.1.0 (2019-03-07) ------------------ - Added option to run tests selectively. - Add support for Python 2.7, 3.4, and 3.5. 1.0 (2018-07-26) ---------------- - Added support for variable substitutions in script data. - Added shortcuts for options in the specification file. - Added --version option to command line arguments. - Improved logging messages. 1.0a2 (2017-05-04) ------------------ - Switched configuration format from RSON to YAML. - Added support for jailing test runs. - Added option for test visibility in report. 1.0a1 (unreleased) ------------------ - First usable version. PK!h Vagrantfile# -*- mode: ruby -*- # vi: set ft=ruby : Vagrant.configure("2") do |config| config.vm.box = "bento/ubuntu-16.10-i386" config.vm.provider "virtualbox" do |vb| # vb.customize ["modifyvm", :id, "--memory", "1024"] vb.customize ["modifyvm", :id, "--name", "calico"] end config.vm.provision "shell", inline: "apt update -y" config.vm.provision "shell", inline: "apt install -y g++ libyaml-dev mercurial fakechroot" config.vm.provision "shell", inline: "apt install -y python3 python3-dev python3-pip" config.vm.provision "shell", inline: "pip3 install -U pip" config.vm.provision "shell", inline: "pip3 install -U calico" end PK!g.==calico/__init__.py# Copyright (C) 2019 H. Turgut Uyar # # Calico is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # # Calico is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with Calico. If not, see . """General settings.""" from __future__ import absolute_import, division, print_function, unicode_literals from distutils.spawn import find_executable __version__ = "1.1.2" # sig: str GLOBAL_TIMEOUT = 2 # sig: int """Default timeout for tests, in seconds.""" SUPPORTS_JAIL = find_executable("fakechroot") is not None # sig: bool """Whether this system supports changing root directory for a process.""" PK!0gɢcalico/__init__.pyi# THIS FILE IS AUTOMATICALLY GENERATED, DO NOT EDIT MANUALLY. __version__ = ... # type: str GLOBAL_TIMEOUT = ... # type: int SUPPORTS_JAIL = ... # type: bool PK!` ))calico/base.py# Copyright (C) 2016-2019 H. Turgut Uyar # # Calico is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # # Calico is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with Calico. If not, see . """Base classes for Calico.""" from __future__ import absolute_import, division, print_function, unicode_literals import logging import os import sys from collections import OrderedDict from enum import Enum import pexpect from . import GLOBAL_TIMEOUT, SUPPORTS_JAIL PY2 = sys.version_info < (3,) # sig: str MAX_LEN = 40 _logger = logging.getLogger("calico") class ActionType(Enum): """Type of an action.""" EXPECT = ("e", "expect") # sig: Tuple[str, str] SEND = ("s", "send") # sig: Tuple[str, str] class Action: """An action in a test script.""" def __init__(self, type_, data, timeout=-1): """Initialize this action. :sig: (ActionType, str, Optional[int]) -> None :param type_: Expect or send. :param data: Data to expect or send. :param timeout: Timeout duration, in seconds. """ self.type_ = type_ # sig: ActionType """Type of this action, expect or send.""" self.data = data if data != "_EOF_" else pexpect.EOF # sig: str """Data description of this action, what to expect or send.""" self.timeout = timeout # sig: Optional[int] """Timeout duration of this action.""" def __iter__(self): """Get components of this action as a sequence.""" yield self.type_.value[0] yield self.data if self.data != pexpect.EOF else "_EOF_" yield self.timeout def run_script(command, script, defs=None, g_timeout=None): """Run a command and check whether it follows a script. :sig: (str, List[Action], Optional[Mapping], Optional[int]) -> Tuple[int, List[str]] :param command: Command to run. :param script: Script to check against. :param defs: Variable substitutions. :param g_timeout: Global timeout value for the spawn class :return: Exit status and errors. """ defs = defs if defs is not None else {} g_timeout = g_timeout if g_timeout is not None else GLOBAL_TIMEOUT process = pexpect.spawn(command, timeout=g_timeout) process.setecho(False) errors = [] last = script[-1] if len(script) > 0 else None if (last is None) or ((last.type_ != ActionType.EXPECT) and (last.data != "_EOF_")): script.append(Action(ActionType.EXPECT, "_EOF_")) for action in script: if action.data is not pexpect.EOF: action.data = action.data % defs if action.type_ == ActionType.EXPECT: try: expecting = ( "_EOF_" if action.data is pexpect.EOF else ('"%(a)s"' % {"a": action.data}) ) timeout = action.timeout if action.timeout != -1 else g_timeout _logger.debug(" expecting (%ds): %s", timeout, expecting) process.expect(action.data, timeout=action.timeout) output = process.after received = ( "_EOF_" if ".EOF" in repr(output) else ('"%(o)s"' % {"o": output.decode()}) ) _logger.debug(" received: %s", received) except pexpect.EOF: output = process.before received = ( "_EOF_" if ".EOF" in repr(output) else ('"%(o)s"' % {"o": output.decode()}) ) _logger.debug(' received: "%s"', received) process.close(force=True) _logger.debug("FAILED: Expected output not received.") errors.append("Expected output not received.") break except pexpect.TIMEOUT: output = process.before received = ( "_EOF_" if ".EOF" in repr(output) else ('"%(o)s"' % {"o": output.decode()}) ) _logger.debug(' received: "%s"', received) process.close(force=True) _logger.debug("FAILED: Timeout exceeded.") errors.append("Timeout exceeded.") break elif action.type_ == ActionType.SEND: _logger.debug(' sending: "%s"', action.data) process.sendline(action.data) else: process.close(force=True) return process.exitstatus, errors class TestCase: """A case in a test suite.""" def __init__( self, name, command, timeout=-1, exits=0, points=None, blocker=False, visible=True ): """Initialize this test case. :sig: ( str, str, Optional[int], Optional[int], Optional[Union[int, float]], Optional[bool], Optional[bool] ) -> None :param name: Name of the case. :param command: Command to run. :param timeout: Timeout duration, in seconds. :param exits: Expected exit status. :param points: Contribution to overall points. :param blocker: Whether failure blocks subsequent cases. :param visible: Whether the test will be visible during the run. """ self.name = name # sig: str """Name of this test case.""" self.command = command # sig: str """Command to run in this test case.""" self.script = [] # sig: List[Action] """Sequence of actions to run in this test case.""" self.timeout = timeout # sig: Optional[int] """Timeout duration of this test case, in seconds.""" self.exits = exits # sig: Optional[int] """Expected exit status of this test case.""" self.points = points # sig: Optional[Union[int, float]] """How much this test case contributes to the total points.""" self.blocker = blocker # sig: bool """Whether failure in this case will block subsequent cases or not.""" self.visible = visible # sig: bool """Whether this test will be visible during the run or not.""" def add_action(self, action): """Append an action to the script of this test case. :sig: (Action) -> None :param action: Action to append to the script. """ self.script.append(action) def run(self, defs=None, jailed=False, g_timeout=None): """Run this test and produce a report. :sig: ( Optional[Mapping], Optional[bool], Optional[int] ) -> Mapping[str, Union[str, List[str]]] :param defs: Variable substitutions. :param jailed: Whether to jail the command to the current directory. :param g_timeout: Global timeout for all expects in the test :return: Result report of the test. """ report = {"errors": []} jail_prefix = ("fakechroot chroot %(d)s " % {"d": os.getcwd()}) if jailed else "" command = "%(j)s%(c)s" % {"j": jail_prefix, "c": self.command} _logger.debug("running command: %s", command) exit_status, errors = run_script( self.command, self.script, defs=defs, g_timeout=g_timeout ) report["errors"].extend(errors) _logger.debug("exit status: %d (expected %d)", exit_status, self.exits) if exit_status != self.exits: report["errors"].append("Incorrect exit status.") return report class Calico(OrderedDict): """A suite containing a collection of ordered test cases.""" def __init__(self): """Initialize this test suite from a given specification. :sig: () -> None """ if PY2: OrderedDict.__init__(self) else: super().__init__() self.points = 0 # sig: Union[int, float] """Total points in this test suite.""" def add_case(self, case): """Add a test case to this suite. :sig: (TestCase) -> None :param case: Test case to add. """ if PY2: OrderedDict.__setitem__(self, case.name, case) else: super().__setitem__(case.name, case) self.points += case.points if case.points is not None else 0 def run(self, tests=None, quiet=False, g_timeout=None): """Run this test suite. :sig: (Optional[bool], Optional[List[str]], Optional[int]) -> Mapping[str, Any] :param tests: Tests to include in the run. :param quiet: Whether to suppress progress messages. :param g_timeout: Global timeout value for the all tests :return: A report containing the results. """ report = OrderedDict() earned_points = 0 os.environ["TERM"] = "dumb" # disable color output in terminal test_names = tests if tests is not None else [n for n in self.keys() if n[0] != "_"] for test_name in test_names: test = self.get(test_name) _logger.debug("starting test %s", test_name) if (not quiet) and test.visible: dots = "." * (MAX_LEN - len(test_name) + 1) print("%(t)s %(d)s" % {"t": test_name, "d": dots}, end=" ") jailed = SUPPORTS_JAIL and test_name.startswith("case_") report[test_name] = test.run( defs=self.get("_define_vars"), jailed=jailed, g_timeout=g_timeout ) passed = len(report[test_name]["errors"]) == 0 if test.points is None: if (not quiet) and test.visible: print("PASSED" if passed else "FAILED") else: report[test_name]["points"] = test.points if passed else 0 earned_points += report[test_name]["points"] if (not quiet) and test.visible: scored = report[test_name]["points"] print("%(s)s / %(p)s" % {"s": scored, "p": test.points}) if test.blocker and (not passed): break report["points"] = earned_points return report PK!GGppcalico/base.pyi# THIS FILE IS AUTOMATICALLY GENERATED, DO NOT EDIT MANUALLY. from typing import Any, List, Mapping, Optional, Tuple, Union from collections import OrderedDict from enum import Enum PY2 = ... # type: str class ActionType(Enum): EXPECT = ... # type: Tuple[str, str] SEND = ... # type: Tuple[str, str] class Action: type_ = ... # type: ActionType data = ... # type: str timeout = ... # type: Optional[int] def __init__( self, type_: ActionType, data: str, timeout: Optional[int] = ... ) -> None: ... def run_script( command: str, script: List[Action], defs: Optional[Mapping] = ..., g_timeout: Optional[int] = ..., ) -> Tuple[int, List[str]]: ... class TestCase: name = ... # type: str command = ... # type: str script = ... # type: List[Action] timeout = ... # type: Optional[int] exits = ... # type: Optional[int] points = ... # type: Optional[Union[int, float]] blocker = ... # type: bool visible = ... # type: bool def __init__( self, name: str, command: str, timeout: Optional[int] = ..., exits: Optional[int] = ..., points: Optional[Union[int, float]] = ..., blocker: Optional[bool] = ..., visible: Optional[bool] = ..., ) -> None: ... def add_action(self, action: Action) -> None: ... def run( self, defs: Optional[Mapping] = ..., jailed: Optional[bool] = ..., g_timeout: Optional[int] = ..., ) -> Mapping[str, Union[str, List[str]]]: ... class Calico(OrderedDict): points = ... # type: Union[int, float] def __init__(self) -> None: ... def add_case(self, case: TestCase) -> None: ... def run( self, tests: Optional[bool] = ..., quiet: Optional[List[str]] = ..., g_timeout: Optional[int] = ..., ) -> Mapping[str, Any]: ... PK!   calico/cli.py# Copyright (C) 2016-2019 H. Turgut Uyar # # Calico is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # # Calico is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with Calico. If not, see . """Command line interface.""" from __future__ import absolute_import, division, print_function, unicode_literals import logging import os import sys from argparse import ArgumentParser from calico import __version__ from calico.parse import parse_spec _logger = logging.getLogger("calico") LOG_FILENAME = "calico.log" def make_parser(prog): """Build a parser for command line arguments. :sig: (str) -> ArgumentParser :param prog: Name of program. :return: Created argument parser. """ parser = ArgumentParser(prog=prog) parser.add_argument("--version", action="version", version="%(prog)s " + __version__) parser.add_argument("spec", help="test specifications file") parser.add_argument("-d", "--directory", help="change to directory before doing anything") parser.add_argument( "--validate", action="store_true", help="don't run tests, just validate spec" ) parser.add_argument("-q", "--quiet", action="store_true", help="disable most messages") parser.add_argument("--log", action="store_true", help="log messages to file") parser.add_argument("--debug", action="store_true", help="enable debug messages") parser.add_argument("-t", "--tests", nargs="+", help="specify which tests cases will run") parser.add_argument( "--timeout", type=int, help="default timeout value for all test cases (seconds)" ) return parser def setup_logging(debug, log): """Set up logging levels and handlers. :sig: (bool, bool) -> None :param debug: Whether to activate debugging. :param log: Whether to log messages to a file. """ _logger.setLevel(logging.DEBUG if debug else logging.INFO) # stream handler for console messages stream_handler = logging.StreamHandler() stream_handler.setLevel(logging.DEBUG if debug else logging.INFO) _logger.addHandler(stream_handler) if log: # force debug mode _logger.setLevel(logging.DEBUG) # file handler for logging messages file_handler = logging.FileHandler(LOG_FILENAME) file_handler.setLevel(logging.DEBUG) _logger.addHandler(file_handler) def main(argv=None): """Entry point of the utility. :sig: (Optional[List[str]]) -> None :param argv: Command line arguments. """ argv = argv if argv is not None else sys.argv parser = make_parser(prog="calico") arguments = parser.parse_args(argv[1:]) try: spec_filename = os.path.abspath(arguments.spec) with open(spec_filename) as f: content = f.read() if arguments.directory is not None: os.chdir(arguments.directory) setup_logging(debug=arguments.debug, log=arguments.log) runner = parse_spec(content) if not arguments.validate: report = runner.run( tests=arguments.tests, quiet=arguments.quiet, g_timeout=arguments.timeout ) score = report["points"] print("Grade: %(s)s / %(p)s" % {"s": score, "p": runner.points}) except Exception as e: print(e, file=sys.stderr) sys.exit(1) if __name__ == "__main__": main() PK!{''calico/cli.pyi# THIS FILE IS AUTOMATICALLY GENERATED, DO NOT EDIT MANUALLY. from typing import List, Optional from argparse import ArgumentParser def make_parser(prog: str) -> ArgumentParser: ... def setup_logging(debug: bool, log: bool) -> None: ... def main(argv: Optional[List[str]] = ...) -> None: ... PK!cQcalico/parse.py# Copyright (C) 2016-2019 H. Turgut Uyar # # Calico is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # # Calico is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with Calico. If not, see . """Specification parsing.""" from __future__ import absolute_import, division, print_function, unicode_literals from ruamel import yaml from ruamel.yaml import comments from .base import Action, ActionType, Calico, TestCase # sigalias: SpecNode = comments.CommentedMap def get_comment_value(node, name, field): """Get the value of a comment field. :sig: (SpecNode, str, str) -> str :param node: Node to get the comment from. :param name: Name of setting in the node. :param field: Name of comment field. :return: Value of comment field. """ try: comment = node.ca.items[name][2].value[1:].strip() # remove the leading hash except KeyError: comment = None if comment is not None: delim = field + ":" if comment.startswith(delim): return comment[len(delim) :].strip() return None def get_attribute(node, test_name, names, val_func, val_args, err_message): """Get the value of an test attribute. :sig: (SpecNode, str, Tuple[str], Callable[[Any, ...], bool], Any, str) -> Any :param node: Node to get the attribute :param test_name: Name of the test :param names: Long and short names of the attribute :param val_func: A validator function for the attribute :param val_args: An argument to the validator function :param err_message: An error message to shown when validation fails """ _short, _long = names attr = node.get(_long, node.get(_short)) if attr is not None: if val_args is None: result = val_func(attr) else: result = val_func(attr, val_args) assert result, err_message % test_name return attr def parse_spec(content): """Parse a test specification. :sig: (str) -> Calico :param content: Specification to parse. :return: Created Calico runner. :raise AssertionError: When given specification is invalid. """ try: spec = yaml.round_trip_load(content) except yaml.YAMLError as e: raise AssertionError(str(e)) if spec is None: raise AssertionError("No test specification") if not isinstance(spec, comments.CommentedSeq): raise AssertionError("Invalid test specification") action_types = {i: m for m in ActionType for i in m.value} runner = Calico() tests = [(n, t) for c in spec for n, t in c.items()] attributes = [ ( "command", { "names": ("r", "run"), "val_func": isinstance, "val_args": str, "err_message": "%s: Run command must be a string", }, ), ( "points", { "names": ("p", "points"), "val_func": isinstance, "val_args": (int, float), "err_message": "%s: Points value must be numeric", }, ), ( "blocker", { "names": ("b", "blocker"), "val_func": isinstance, "val_args": bool, "err_message": "%s: Blocker value must be true or false", }, ), ( "exits", { "names": ("x", "exit"), "val_func": isinstance, "val_args": int, "err_message": "%s: Exit status value must be an integer", }, ), ( "visible", { "names": ("v", "visible"), "val_func": isinstance, "val_args": bool, "err_message": "%s: Visibility value must be true or false", }, ), ] for test_name, test in tests: if test_name[0] == "_": for section, section_value in test.items(): runner[test_name + "_" + section] = section_value continue kwargs = {} for kwarg, attr in attributes: attr_ = get_attribute(test, test_name, **attr) if attr_ is not None: kwargs[kwarg] = attr_ assert "command" in kwargs, "%(t)s: No run command" % {"t": test_name} timeout = get_comment_value(test, name="run", field="timeout") if timeout is not None: assert timeout.isdigit(), "%(t)s: Timeout value must be an integer" % { "t": test_name } kwargs["timeout"] = int(timeout) case = TestCase(test_name, **kwargs) script = test.get("script") if script is None: # If there's no script, just expect EOF. action = Action(ActionType.EXPECT, "_EOF_", timeout=case.timeout) case.add_action(action) else: for step in script: action_type, data = [(k, v) for k, v in step.items()][0] assert action_type in action_types, "%(t)s: Unknown action type" % { "t": test_name } assert isinstance(data, str), "%(t)s: Action data must be a string" % { "t": test_name } kwargs = {} timeout = get_comment_value(step, name=action_type, field="timeout") if timeout is not None: assert timeout.isdigit(), "%(t)s: Timeout value must be an integer" % { "t": test_name } kwargs["timeout"] = int(timeout) action = Action(action_types[action_type], data, **kwargs) case.add_action(action) runner.add_case(case) return runner PK!calico/parse.pyi# THIS FILE IS AUTOMATICALLY GENERATED, DO NOT EDIT MANUALLY. from typing import Any, Callable, Tuple from ruamel.yaml import comments from .base import Calico SpecNode = comments.CommentedMap def get_comment_value(node: SpecNode, name: str, field: str) -> str: ... def get_attribute( node: SpecNode, test_name: str, names: Tuple[str], val_func: Callable[[Any, ...], bool], val_args: Any, err_message: str, ) -> Any: ... def parse_spec(content: str) -> Calico: ... PK![^^ docs/Makefile# Minimal makefile for Sphinx documentation # # You can set these variables from the command line. SPHINXOPTS = SPHINXBUILD = sphinx-build SPHINXPROJ = Pace SOURCEDIR = source BUILDDIR = build # Put it first so that "make" without argument is like "make help". help: @$(SPHINXBUILD) -M help "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O) .PHONY: help Makefile # Catch-all target: route all unknown targets to Sphinx using the new # "make mode" option. $(O) is meant as a shortcut for $(SPHINXOPTS). %: Makefile @$(SPHINXBUILD) -M $@ "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O) PK!},rdocs/source/conf.py#!/usr/bin/env python3 # -*- coding: utf-8 -*- # # Calico documentation build configuration file, created by # sphinx-quickstart on Tue May 2 10:38:47 2017. # # This file is execfile()d with the current directory set to its # containing dir. # # Note that not all possible configuration values are present in this # autogenerated file. # # All configuration values have a default; values that are commented out # serve to show the default. # If extensions (or modules to document with autodoc) are in another directory, # add these directories to sys.path here. If the directory is relative to the # documentation root, use os.path.abspath to make it absolute, like shown here. # # import os # import sys # sys.path.insert(0, os.path.abspath('.')) # -- General configuration ------------------------------------------------ # If your documentation needs a minimal Sphinx version, state it here. # # needs_sphinx = '1.0' # Add any Sphinx extension module names here, as strings. They can be # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom # ones. extensions = ["sphinx.ext.autodoc", "pygenstub"] # Add any paths that contain templates here, relative to this directory. templates_path = ["_templates"] # The suffix(es) of source filenames. # You can specify multiple suffix as a list of string: # # source_suffix = ['.rst', '.md'] source_suffix = ".rst" # The master toctree document. master_doc = "index" # General information about the project. project = "Calico" copyright = "2016-2018, H. Turgut Uyar" author = "H. Turgut Uyar" # The version info for the project you're documenting, acts as replacement for # |version| and |release|, also used in various other places throughout the # built documents. # # The short X.Y version. version = "1.1" # The full version, including alpha/beta/rc tags. release = "1.1.2" # The language for content autogenerated by Sphinx. Refer to documentation # for a list of supported languages. # # This is also used if you do content translation via gettext catalogs. # Usually you set "language" from the command line for these cases. language = None # List of patterns, relative to source directory, that match files and # directories to ignore when looking for source files. # This patterns also effect to html_static_path and html_extra_path exclude_patterns = ["_build", "Thumbs.db", ".DS_Store"] # The name of the Pygments (syntax highlighting) style to use. pygments_style = "sphinx" # A list of ignored prefixes for module index sorting. modindex_common_prefix = ["calico."] # If true, `todo` and `todoList` produce output, else they produce nothing. todo_include_todos = False # -- Options for HTML output ---------------------------------------------- # The theme to use for HTML and HTML Help pages. See the documentation for # a list of builtin themes. # html_theme = "sphinx_rtd_theme" # Theme options are theme-specific and customize the look and feel of a theme # further. For a list of options available for each theme, see the # documentation. # # html_theme_options = {} # Add any paths that contain custom static files (such as style sheets) here, # relative to this directory. They are copied after the builtin static files, # so a file named "default.css" will overwrite the builtin "default.css". html_static_path = ["_static"] # -- Options for HTMLHelp output ------------------------------------------ # Output file base name for HTML help builder. htmlhelp_basename = "calicodoc" # -- Options for LaTeX output --------------------------------------------- latex_elements = { # The paper size ('letterpaper' or 'a4paper'). # "papersize": "a4paper", # The font size ('10pt', '11pt' or '12pt'). # # 'pointsize': '10pt', # Additional stuff for the LaTeX preamble. # # 'preamble': '', # Latex figure (float) alignment # # 'figure_align': 'htbp', } # Grouping the document tree into LaTeX files. List of tuples # (source start file, target name, title, # author, documentclass [howto, manual, or own class]). latex_documents = [ (master_doc, "calico.tex", "Calico Documentation", "H. Turgut Uyar", "manual") ] # -- Options for manual page output --------------------------------------- # One entry per manual page. List of tuples # (source start file, name, description, authors, manual section). man_pages = [(master_doc, "calico", "Calico Documentation", [author], 1)] # -- Options for Texinfo output ------------------------------------------- # Grouping the document tree into Texinfo files. List of tuples # (source start file, target name, title, author, # dir menu entry, description, category) texinfo_documents = [ ( master_doc, "calico", "Calico Documentation", author, "calico", "I/O checker for command-line programs.", "Miscellaneous", ) ] PK!óvdocs/source/index.rstCalico ====== .. include:: ../README.rst Contents ======== .. toctree:: :maxdepth: 2 tutorial Indices and tables ================== * :ref:`genindex` * :ref:`modindex` * :ref:`search` PK!2ZZdocs/source/modules/base.rst:orphan: :mod:`calico.base` ================== .. automodule:: calico.base :members: PK!t%WWdocs/source/modules/cli.rst:orphan: :mod:`calico.cli` ================= .. automodule:: calico.cli :members: PK!Ѫ]]docs/source/modules/parse.rst:orphan: :mod:`calico.parse` =================== .. automodule:: calico.parse :members: PK!s:\((docs/source/tutorial.rstTutorial ======== Let's assume that you want to use Calico for checking a programming assignment. The assignment is to write a C program that will get the radius of a circle from the user, calculate its area and print the result. A simple implementation could be the following code, saved in the file :file:`circle.c`: .. code-block:: c #include int main(int argc, char* argv[]) { float radius, area; printf("Enter radius of circle: "); scanf("%f", &radius); area = 3.14159 * radius * radius; printf("Area: %f\n", area); return 0; } Basics ------ To run Calico, we have to write a test specification file. This specification consists of a sequence of stages where a stage is a test or a setup operation. For each stage, the basic information that needs to be supplied is what command to run and what it should return. For example, if we want to check whether this source file can be compiled, we can write the following specification: .. code-block:: none - compile: run: gcc -c circle.c -o circle.o exit: 0 This specification states that there is only one stage. The name of the stage is "compile". The command is to run the source code through the gcc compiler, and the compiler should exit with the status code 0 (success). Save this specification in the file :file:`circle.yaml` in the same directory as the :file:`circle.c` file. Note that the run command requires that the C file has to be in the current directory. Now, if you run ``calico circle.yaml``, you see the following output:: compile .................................. PASSED Grade: 0 / 0 This stage will create a :file:`circle.o` file in the current directory as a result of the run command. If we want to do grading, we can assign points to stages. If a stage with points passes, Calico will print those points in the report. Also note that we can leave out the ``exit: 0`` clause because successful completion is the default desired outcome: .. code-block:: none - compile: run: gcc -c circle.c -o circle.o points: 10 In this case, the output will be:: compile .................................. 10 / 10 Grade: 10 / 10 Blockers -------- As our next step, let's check whether the compiled object file can be linked. We add a second stage to our specification: .. code-block:: none - compile: run: gcc -c circle.c -o circle.o points: 10 - link: run: gcc circle.o -o circle points: 20 The stages are executed in order and the output is:: compile .................................. 10 / 10 link ..................................... 20 / 20 Grade: 30 / 30 However, it doesn't make sense to try to the link the object file if the source file could not be compiled and the object file was not generated. If a stage is marked as a blocker, all subsequent stages will be cancelled if that stage fails. .. code-block:: none - compile: run: gcc -c circle.c -o circle.o blocker: true points: 10 - link: run: gcc circle.o -o circle points: 20 If you introduce an error into the C code and run Calico again, you'll see:: compile .................................. 0 / 10 Grade: 0 / 30 As seen in the example, Calico will count the points of failed and cancelled stages in the total points calculation. Interacting with the program ---------------------------- If the compile and link stages are successful, we'll have an executable (in the file :file:`circle` as a result of the link command) that we can run for I/O checking. So let's write a stage to test whether it produces the correct output for a simple case: .. code-block:: none - compile: run: gcc -c circle.c -o circle.o blocker: true - link: run: gcc circle.o -o circle blocker: true - case_1: run: ./circle script: - expect: "Enter radius(.*?):\s+" - send: "1" - expect: "Area: 3.14(\d*)\r\n" - expect: _EOF_ points: 10 First of all, note the changes in the compile and link stages. Both of these stages are blockers and we have decided not to assign points to them. To describe the interaction with a program, we supply a script, which is a sequence of expect/send operations. An expect operation expects the given output from the program and a send operation sends a user input to the program. Expected output is given as a regular expression and user input is given as a simple string. In the example, the script first expects a prompt for entering the radius, then sends the string "1" (as if the user typed it in). Next, it expects that the program prints a message that contains the correct area for that input. Finally it expects to program to terminate without requiring further user input. [#eof]_ Running Calico now prints:: compile .................................. PASSED link ..................................... PASSED case_1 ................................... 10 / 10 Grade: 10 / 10 A stage that doesn't have a script is assumed to be non-interactive and it consists of a single step where it expects the program to terminate. Say that if the user types in a negative radius value we want to program to exit with a failure code. For that, we can use the exit status setting: .. code-block:: none - case_negative: run: ./circle script: - expect: "Enter radius(.*?):\s+" - send: "-1" - expect: _EOF_ exit: 1 points: 30 To make that test pass, the C file can be modified as follows: .. code-block:: c #include #include int main(int argc, char* argv[]) { float radius, area; printf("Enter radius of circle: "); scanf("%f", &radius); if (radius < 0) { fprintf(stderr, "Negative radius values are not allowed.\n"); exit(1); } area = 3.14159 * radius * radius; printf("Area: %f\n", area); return 0; } Debug mode ---------- Running in debug mode will show you what's going on between Calico and the tested program. Type the command ``calico --debug circle.yaml`` and you get the following output:: starting test compile running command: gcc -c circle.c -o circle.o expecting: _EOF_ received: _EOF_ exit status: 0 (expected 0) compile .................................. PASSED starting test link running command: gcc circle.o -o circle expecting: _EOF_ received: _EOF_ exit status: 0 (expected 0) link ..................................... PASSED starting test case_1 running command: ./circle expecting: "Enter radius(.*?):\s+" received: "Enter radius of circle: " sending: 1 expecting: "Area: 3.14(\d*)\r\n" received: "Area: 3.141590 " expecting: _EOF_ received: _EOF_ exit status: 0 (expected 0) case_1 ................................... 10 / 10 Grade: 10 / 10 Timeouts -------- It's possible that the tested program goes into an infinite loop or takes too long to respond. For such cases, we would like to limit the amount of time Calico should wait. Expect steps can have timeout comments that make this possible: .. code-block:: none - case_1: run: ./circle script: - expect: "Enter radius(.*?):\s+" - send: "1" - expect: "Area: 3.14(\d*)\r\n" # timeout: 2 - expect: _EOF_ exit: 0 points: 10 In this example, after sending the user input, Calico will wait 2 seconds for the program to print the area. If the program doesn't respond in that time, the stage will fail. To test it, add a sleep statement to the C code and run Calico in debug mode:: starting test case_1 running command: ./circle expecting: "Enter radius(.*?):\s+" received: "Enter radius of circle: " sending: "1" expecting (2s): "Area: 3.14(\d*)\r\n" received: "" FAILED: Timeout exceeded. case_1 ................................... 0 / 10 Run commands can also have timeout comments if the stage doesn't have a script. In that case Calico will expect the program to terminate within that time frame. If the stage has a script, the timeout comment for the run command will be ignored. Timeout comments for other items such as send steps also have no effect. Hidden stages ------------- To make sure that there are no object and executable files left over from earlier runs, let's add an initialization stage to delete these generated files. But we don't want this stage to be included in the report, so we mark it as not visible: .. code-block:: none - init: run: rm -f circle.o circle visible: false - compile: ... Running Calico will leave out the "init" stage:: compile .................................. PASSED link ..................................... PASSED case_1 ................................... 10 / 10 case_negative ............................ 30 / 30 Grade: 40 / 40 Running in debug mode will include the details about the hidden stages. Defining variables ------------------ In scripts, in order not to repeatedly type the same data -such as expected prompts- you can define variables in the special ``_define`` section: .. code-block:: none - _define: vars: prompt: "Enter radius(.*?):\\s+" - case_1: run: ./circle script: - expect: %(prompt)s - send: "1" ... - case_2: run: ./circle script: - expect: %(prompt)s - send: "0" ... .. note:: To make the specification file shorter, you can use the following shortcuts for the keywords: ``r`` for ``run``, ``e`` for ``expect``, ``s`` for ``send``, ``x`` for ``exit``, ``b`` for ``blocker``, ``v`` for ``visible``, ``p`` for ``points``. Jailing tests ------------- To prevent the tested program from damaging the system, Calico runs the stages in a restricted environment, if possible. For this to work, the "fakechroot" command has to be in the path of executables. If this command is available, stages that have names starting with "case\_" will be jailed to the directory in which they are run and cannot access files in upper directories. .. [#eof] ``_EOF_`` is a marker for end-of-file and expecting ``_EOF_`` means expecting program termination. PK!:qqtests/circle.c#include #include int main(int argc, char* argv[]) { float radius, area; printf("Enter radius of circle: "); scanf("%f", &radius); if (radius < 0) { fprintf(stderr, "Negative radius values are not allowed.\n"); exit(1); } area = 3.14159 * radius * radius; printf("Area: %f\n", area); return 0; } PK!eUtests/circle.yaml- _define: vars: prompt: "Enter radius(.*?):\\s+" - init: run: rm -f circle.o circle visible: false - compile: run: gcc -c circle.c -o circle.o # timeout: 2 blocker: true - link: run: gcc circle.o -o circle # timeout: 2 blocker: true - case_1: run: ./circle script: - expect: "%(prompt)s" # timeout: 1 - send: "1" - expect: 'Area: 3.14(\d*)\r\n' # timeout: 1 - expect: _EOF_ # timeout: 1 exit: 0 points: 10 - case_0: run: ./circle script: - expect: "%(prompt)s" # timeout: 1 - send: "0" - expect: 'Area: 0.00(\d*)\r\n' # timeout: 1 - expect: _EOF_ # timeout: 1 exit: 0 points: 20 - case_negative: run: ./circle script: - expect: "%(prompt)s" # timeout: 1 - send: "-1" - expect: _EOF_ # timeout: 1 exit: 1 points: 30 - cleanup: run: rm -rf circle.o circle visible: false PK!w?))tests/test_calico.py# flake8: noqa from __future__ import absolute_import, division, print_function, unicode_literals from pkg_resources import get_distribution from calico import __version__ def test_installed_version_should_match_package_version(): assert get_distribution("calico").version == __version__ PK!W tests/test_cli.pyfrom __future__ import absolute_import, division, print_function, unicode_literals from pytest import mark, raises import os import sys PY2 = sys.version_info.major < 3 if not PY2: from unittest.mock import mock_open, patch from pkg_resources import get_distribution from calico import cli base_dir = os.path.dirname(__file__) circle_spec_file = os.path.join(base_dir, "circle.yaml") def test_help_should_print_usage_and_exit(capsys): with raises(SystemExit): cli.main(argv=["calico", "--help"]) out, err = capsys.readouterr() assert out.startswith("usage: ") def test_cli_version_should_print_version_number_and_exit(capsys): version = get_distribution("calico").version with raises(SystemExit): cli.main(argv=["calico", "--version"]) out, err = capsys.readouterr() assert out if not PY2 else err == "calico %(ver)s\n" % {"ver": version} def test_no_spec_file_should_print_usage_and_exit(capsys): with raises(SystemExit): cli.main(argv=["calico"]) out, err = capsys.readouterr() assert err.startswith("usage: ") assert ("required: spec" in err) or ("too few arguments" in err) def test_existing_spec_file_should_be_ok(capsys): cli.main(argv=["calico", circle_spec_file]) out, err = capsys.readouterr() assert err == "" def test_non_existing_spec_file_should_exit_with_error(capsys): with raises(SystemExit): cli.main(argv=["calico", "dummy.spec"]) out, err = capsys.readouterr() assert "No such file or directory:" in err # TODO: add tests for -d option def test_non_existing_base_directory_should_exit_with_error(capsys): with raises(SystemExit): cli.main(argv=["calico", "-d", "dummy", circle_spec_file]) out, err = capsys.readouterr() assert "No such file or directory:" in err def test_validate_valid_spec_file_should_not_print_output(capsys): cli.main(argv=["calico", "--validate", circle_spec_file]) out, err = capsys.readouterr() assert out == "" @mark.skipif(PY2, reason="has to mock builtins.open") def test_validate_invalid_spec_file_should_exit_with_error(capsys): with patch("builtins.open", mock_open(read_data=""), create=True): with raises(SystemExit): cli.main(argv=["calico", "--validate", circle_spec_file]) out, err = capsys.readouterr() assert "No test specification" in err # TODO: add tests for --quiet option # TODO: add tests for --log option # TODO: add tests for --debug option # TODO: add tests for summary output PK!,h`S*S*tests/test_parse.pyfrom __future__ import absolute_import, division, print_function, unicode_literals from pytest import raises from calico.parse import parse_spec def test_empty_spec_should_raise_error(): with raises(AssertionError) as e: parse_spec("") assert "No test specification" in str(e) def test_invalid_spec_format_should_raise_error(): with raises(AssertionError) as e: parse_spec("!dummy") assert "Invalid test specification" in str(e) def test_case_with_run_command_should_be_ok(): source = """ - c1: run: echo 1 """ runner = parse_spec(source) assert runner["c1"].command == "echo 1" def test_case_with_run_shortcut_should_be_ok(): source = """ - c1: r: echo 1 """ runner = parse_spec(source) assert runner["c1"].command == "echo 1" def test_case_order_should_be_preserved(): source = """ - c2: run: echo 2 - c3: run: echo 3 - c1: run: echo 1 """ runner = parse_spec(source) assert list(runner.keys()) == ["c2", "c3", "c1"] def test_case_without_run_command_should_raise_error(): source = """ - c1: exit: 1 """ with raises(AssertionError) as e: parse_spec(source) assert "No run command" in str(e) def test_case_with_multiple_run_commands_should_raise_error(): source = """ - c1: run: - echo 1a - echo 1b """ with raises(AssertionError) as e: parse_spec(source) assert "Run command must be a string" in str(e) def test_case_default_exit_status_should_be_zerd(): source = """ - c1: run: echo 1 """ runner = parse_spec(source) assert runner["c1"].exits == 0 def test_case_integer_exit_status_should_be_ok(): source = """ - c1: run: echo 1 exit: 2 """ runner = parse_spec(source) assert runner["c1"].exits == 2 def test_case_fractional_exit_status_should_raise_error(): source = """ - c1: run: echo 1 exit: 1.5 """ with raises(AssertionError) as e: parse_spec(source) assert "Exit status value must be an integer" in str(e) def test_case_string_exit_status_should_raise_error(): source = """ - c1: run: echo 1 exit: "0" """ with raises(AssertionError) as e: parse_spec(source) assert "Exit status value must be an integer" in str(e) def test_case_exit_shortcut_should_be_ok(): source = """ - c1: r: echo 1 x: 2 """ runner = parse_spec(source) assert runner["c1"].exits == 2 def test_case_default_points_value_should_be_none(): source = """ - c1: run: echo 1 """ runner = parse_spec(source) assert runner["c1"].points is None def test_case_integer_points_value_should_be_ok(): source = """ - c1: run: echo 1 points: 10 """ runner = parse_spec(source) assert runner["c1"].points == 10 def test_case_fractional_points_value_should_be_ok(): source = """ - c1: run: echo 1 points: 1.5 """ runner = parse_spec(source) assert runner["c1"].points == 1.5 def test_case_non_numeric_points_value_should_raise_error(): source = """ - c1: run: echo 1 points: "10" """ with raises(AssertionError) as e: parse_spec(source) assert "Points value must be numeric" in str(e) def test_case_points_shortcut_should_be_ok(): source = """ - c1: run: echo 1 p: 10 """ runner = parse_spec(source) assert runner["c1"].points == 10 def test_case_default_blocker_value_should_be_false(): source = """ - c1: run: echo 1 """ runner = parse_spec(source) assert not runner["c1"].blocker def test_case_blocker_set_to_true_should_be_ok(): source = """ - c1: run: echo 1 blocker: true """ runner = parse_spec(source) assert runner["c1"].blocker def test_case_blocker_set_to_false_should_be_ok(): source = """ - c1: run: echo 1 blocker: false """ runner = parse_spec(source) assert not runner["c1"].blocker def test_case_non_boolean_blocker_value_should_raise_error(): source = """ - c1: run: echo 1 blocker: maybe """ with raises(AssertionError) as e: parse_spec(source) assert "Blocker value must be true or false" in str(e) def test_case_blocker_shortcut_should_be_ok(): source = """ - c1: run: echo 1 b: true """ runner = parse_spec(source) assert runner["c1"].blocker def test_case_default_visibility_value_should_be_true(): source = """ - c1: run: echo 1 """ runner = parse_spec(source) assert runner["c1"].visible def test_case_visible_set_to_true_should_be_ok(): source = """ - c1: run: echo 1 visible: true """ runner = parse_spec(source) assert runner["c1"].visible def test_case_visible_set_to_false_should_be_ok(): source = """ - c1: run: echo 1 visible: false """ runner = parse_spec(source) assert not runner["c1"].visible def test_case_non_boolean_visibility_value_should_raise_error(): source = """ - c1: run: echo 1 visible: maybe """ with raises(AssertionError) as e: parse_spec(source) assert "Visibility value must be true or false" in str(e) def test_case_visibility_shortcut_should_be_ok(): source = """ - c1: run: echo 1 v: true """ runner = parse_spec(source) assert runner["c1"].visible def test_case_with_no_script_should_expect_eof(): source = """ - c1: run: echo 1 """ runner = parse_spec(source) assert [tuple(s) for s in runner["c1"].script] == [("e", "_EOF_", -1)] def test_case_run_with_timeout_should_generate_expect_eof_with_timeout(): source = """ - c1: run: echo 1 # timeout: 5 """ runner = parse_spec(source) assert [tuple(s) for s in runner["c1"].script] == [("e", "_EOF_", 5)] def test_case_run_with_non_numeric_timeout_value_should_raise_error(): source = """ - c1: run: echo 1 # timeout: "5" """ with raises(AssertionError) as e: parse_spec(source) assert "Timeout value must be an integer" in str(e) def test_case_script_with_invalid_action_should_raise_error(): source = """ - c1: run: echo 1 script: - wait: 1 """ with raises(AssertionError) as e: parse_spec(source) assert "Unknown action type" in str(e) def test_case_script_with_string_action_data_should_be_ok(): source = """ - c1: run: echo 1 script: - expect: "1" """ runner = parse_spec(source) assert [tuple(s) for s in runner["c1"].script] == [("e", "1", -1)] def test_case_script_with_numeric_action_data_should_raise_error(): source = """ - c1: run: echo 1 script: - expect: 1 """ with raises(AssertionError) as e: parse_spec(source) assert "Action data must be a string" in str(e) def test_case_script_with_action_data_eof_should_be_ok(): source = """ - c1: run: echo 1 script: - expect: _EOF_ """ runner = parse_spec(source) assert [tuple(s) for s in runner["c1"].script] == [("e", "_EOF_", -1)] def test_case_script_with_multiple_action_data_should_raise_error(): source = """ - c1: run: echo 1 script: - send: - "1a" - "1b" """ with raises(AssertionError) as e: parse_spec(source) assert "Action data must be a string" in str(e) def test_case_script_with_expect_shortcut_should_be_ok(): source = """ - c1: run: echo 1 script: - e: "1" """ runner = parse_spec(source) assert [tuple(s) for s in runner["c1"].script] == [("e", "1", -1)] def test_case_script_with_send_shortcut_should_be_ok(): source = """ - c1: run: echo 1 script: - s: "1" """ runner = parse_spec(source) assert [tuple(s) for s in runner["c1"].script] == [("s", "1", -1)] def test_case_script_order_should_be_preserved(): source = """ - c1: run: echo 1 script: - expect: "foo" - send: "1" - expect: _EOF_ """ runner = parse_spec(source) assert [tuple(s) for s in runner["c1"].script] == [ ("e", "foo", -1), ("s", "1", -1), ("e", "_EOF_", -1), ] def test_case_script_action_with_integer_timeout_value_should_be_ok(): source = """ - c1: run: echo 1 script: - expect: "foo" # timeout: 5 """ runner = parse_spec(source) assert [tuple(s) for s in runner["c1"].script] == [("e", "foo", 5)] def test_case_script_action_with_fractional_timeout_value_should_raise_error(): source = """ - c1: run: echo 1 script: - expect: "foo" # timeout: 4.5 """ with raises(AssertionError) as e: parse_spec(source) assert "Timeout value must be an integer" in str(e) def test_case_script_action_with_string_timeout_value_should_raise_error(): source = """ - c1: run: echo 1 script: - expect: "foo" # timeout: "5" """ with raises(AssertionError) as e: parse_spec(source) assert "Timeout value must be an integer" in str(e) def test_total_points_should_be_sum_of_points(): source = """ - c1: run: echo 1 points: 15 - c2: run: echo 2 - c3: run: echo 3 points: 25 """ runner = parse_spec(source) assert runner.points == 40 def test_total_fractional_points_should_be_sum_of_points(): source = """ - c1: run: echo 1 points: 1.5 - c2: run: echo 2 - c3: run: echo 3 points: 2.25 """ runner = parse_spec(source) assert runner.points == 3.75 def test_no_total_points_given_should_sum_zero(): source = """ - c1: run: echo 1 - c2: run: echo 2 """ runner = parse_spec(source) assert runner.points == 0 def test_case_define_variable_should_be_ok(): source = """ - _define: vars: foo: bar """ runner = parse_spec(source) assert runner["_define_vars"]["foo"] == "bar" PK!_Owootests/test_script.pyfrom __future__ import absolute_import, division, print_function, unicode_literals from calico.base import Action, ActionType, run_script def test_script_expect_eof_should_be_ok(): result = run_script("true", [Action(ActionType.EXPECT, "_EOF_")]) assert result == (0, []) def test_script_empty_should_be_ok(): result = run_script("true", []) assert result == (0, []) def test_script_expect_output_should_be_ok(): result = run_script( "echo 1", [Action(ActionType.EXPECT, "1"), Action(ActionType.EXPECT, "_EOF_")] ) assert result == (0, []) def test_script_closing_expect_feof_should_be_optional(): result = run_script("echo 1", [Action(ActionType.EXPECT, "1")]) assert result == (0, []) def test_script_expect_with_timeout_should_be_ok(): result = run_script("sleep 1", [Action(ActionType.EXPECT, "_EOF_", timeout=2)]) assert result == (0, []) def test_script_expect_with_exceeded_timeout_should_report_error(): result = run_script("sleep 2", [Action(ActionType.EXPECT, "_EOF_", timeout=1)]) assert result == (None, ["Timeout exceeded."]) def test_script_expect_with_unmatched_output_should_report_error(): result = run_script("true", [Action(ActionType.EXPECT, "1")]) assert result == (0, ["Expected output not received."]) # def test_script_expect_with_extra_output_should_report_error(): # result = run_script("echo 1", [Action(ActionType.EXPECT, "_EOF_")]) # assert result == (0, ["Extra output received."]) def test_script_send_input_should_be_ok(): result = run_script( "bash -c 'read x && echo $x'", [Action(ActionType.SEND, "1"), Action(ActionType.EXPECT, "1")], ) assert result == (0, []) def test_timeout_should_kill_infinite_program(): result = run_script("yes", [Action(ActionType.EXPECT, "_EOF_", timeout=1)]) assert result == (None, ["Timeout exceeded."]) PK!H'*'calico-1.1.2.dist-info/entry_points.txtN+I/N.,()JNLηPz9Vy\\PK!|wfKK"calico-1.1.2.dist-info/LICENSE.txt GNU GENERAL PUBLIC LICENSE Version 3, 29 June 2007 Copyright (C) 2007 Free Software Foundation, Inc. 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Moreover, your license from a particular copyright holder is reinstated permanently if the copyright holder notifies you of the violation by some reasonable means, this is the first time you have received notice of violation of this License (for any work) from that copyright holder, and you cure the violation prior to 30 days after your receipt of the notice. Termination of your rights under this section does not terminate the licenses of parties who have received copies or rights from you under this License. If your rights have been terminated and not permanently reinstated, you do not qualify to receive new licenses for the same material under section 10. 9. Acceptance Not Required for Having Copies. You are not required to accept this License in order to receive or run a copy of the Program. Ancillary propagation of a covered work occurring solely as a consequence of using peer-to-peer transmission to receive a copy likewise does not require acceptance. However, nothing other than this License grants you permission to propagate or modify any covered work. These actions infringe copyright if you do not accept this License. Therefore, by modifying or propagating a covered work, you indicate your acceptance of this License to do so. 10. Automatic Licensing of Downstream Recipients. Each time you convey a covered work, the recipient automatically receives a license from the original licensors, to run, modify and propagate that work, subject to this License. You are not responsible for enforcing compliance by third parties with this License. An "entity transaction" is a transaction transferring control of an organization, or substantially all assets of one, or subdividing an organization, or merging organizations. If propagation of a covered work results from an entity transaction, each party to that transaction who receives a copy of the work also receives whatever licenses to the work the party's predecessor in interest had or could give under the previous paragraph, plus a right to possession of the Corresponding Source of the work from the predecessor in interest, if the predecessor has it or can get it with reasonable efforts. You may not impose any further restrictions on the exercise of the rights granted or affirmed under this License. For example, you may not impose a license fee, royalty, or other charge for exercise of rights granted under this License, and you may not initiate litigation (including a cross-claim or counterclaim in a lawsuit) alleging that any patent claim is infringed by making, using, selling, offering for sale, or importing the Program or any portion of it. 11. Patents. A "contributor" is a copyright holder who authorizes use under this License of the Program or a work on which the Program is based. The work thus licensed is called the contributor's "contributor version". A contributor's "essential patent claims" are all patent claims owned or controlled by the contributor, whether already acquired or hereafter acquired, that would be infringed by some manner, permitted by this License, of making, using, or selling its contributor version, but do not include claims that would be infringed only as a consequence of further modification of the contributor version. For purposes of this definition, "control" includes the right to grant patent sublicenses in a manner consistent with the requirements of this License. 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If, pursuant to or in connection with a single transaction or arrangement, you convey, or propagate by procuring conveyance of, a covered work, and grant a patent license to some of the parties receiving the covered work authorizing them to use, propagate, modify or convey a specific copy of the covered work, then the patent license you grant is automatically extended to all recipients of the covered work and works based on it. A patent license is "discriminatory" if it does not include within the scope of its coverage, prohibits the exercise of, or is conditioned on the non-exercise of one or more of the rights that are specifically granted under this License. You may not convey a covered work if you are a party to an arrangement with a third party that is in the business of distributing software, under which you make payment to the third party based on the extent of your activity of conveying the work, and under which the third party grants, to any of the parties who would receive the covered work from you, a discriminatory patent license (a) in connection with copies of the covered work conveyed by you (or copies made from those copies), or (b) primarily for and in connection with specific products or compilations that contain the covered work, unless you entered into that arrangement, or that patent license was granted, prior to 28 March 2007. Nothing in this License shall be construed as excluding or limiting any implied license or other defenses to infringement that may otherwise be available to you under applicable patent law. 12. No Surrender of Others' Freedom. If conditions are imposed on you (whether by court order, agreement or otherwise) that contradict the conditions of this License, they do not excuse you from the conditions of this License. If you cannot convey a covered work so as to satisfy simultaneously your obligations under this License and any other pertinent obligations, then as a consequence you may not convey it at all. For example, if you agree to terms that obligate you to collect a royalty for further conveying from those to whom you convey the Program, the only way you could satisfy both those terms and this License would be to refrain entirely from conveying the Program. 13. Use with the GNU Affero General Public License. Notwithstanding any other provision of this License, you have permission to link or combine any covered work with a work licensed under version 3 of the GNU Affero General Public License into a single combined work, and to convey the resulting work. The terms of this License will continue to apply to the part which is the covered work, but the special requirements of the GNU Affero General Public License, section 13, concerning interaction through a network will apply to the combination as such. 14. Revised Versions of this License. The Free Software Foundation may publish revised and/or new versions of the GNU General Public License from time to time. Such new versions will be similar in spirit to the present version, but may differ in detail to address new problems or concerns. Each version is given a distinguishing version number. If the Program specifies that a certain numbered version of the GNU General Public License "or any later version" applies to it, you have the option of following the terms and conditions either of that numbered version or of any later version published by the Free Software Foundation. If the Program does not specify a version number of the GNU General Public License, you may choose any version ever published by the Free Software Foundation. If the Program specifies that a proxy can decide which future versions of the GNU General Public License can be used, that proxy's public statement of acceptance of a version permanently authorizes you to choose that version for the Program. Later license versions may give you additional or different permissions. However, no additional obligations are imposed on any author or copyright holder as a result of your choosing to follow a later version. 15. Disclaimer of Warranty. THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION. 16. Limitation of Liability. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. 17. Interpretation of Sections 15 and 16. If the disclaimer of warranty and limitation of liability provided above cannot be given local legal effect according to their terms, reviewing courts shall apply local law that most closely approximates an absolute waiver of all civil liability in connection with the Program, unless a warranty or assumption of liability accompanies a copy of the Program in return for a fee. END OF TERMS AND CONDITIONS How to Apply These Terms to Your New Programs If you develop a new program, and you want it to be of the greatest possible use to the public, the best way to achieve this is to make it free software which everyone can redistribute and change under these terms. To do so, attach the following notices to the program. It is safest to attach them to the start of each source file to most effectively state the exclusion of warranty; and each file should have at least the "copyright" line and a pointer to where the full notice is found. Copyright (C) This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see . Also add information on how to contact you by electronic and paper mail. If the program does terminal interaction, make it output a short notice like this when it starts in an interactive mode: Copyright (C) This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. This is free software, and you are welcome to redistribute it under certain conditions; type `show c' for details. The hypothetical commands `show w' and `show c' should show the appropriate parts of the General Public License. Of course, your program's commands might be different; for a GUI interface, you would use an "about box". You should also get your employer (if you work as a programmer) or school, if any, to sign a "copyright disclaimer" for the program, if necessary. For more information on this, and how to apply and follow the GNU GPL, see . The GNU General Public License does not permit incorporating your program into proprietary programs. If your program is a subroutine library, you may consider it more useful to permit linking proprietary applications with the library. If this is what you want to do, use the GNU Lesser General Public License instead of this License. But first, please read . 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