test_load_context_defaults() - Code Metrics - Inspection of "New 2.0 Context Implementation" - audreyr/cookiecutter - Measure and Improve Code Quality continuously with Scrutinizer

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Pull Request — master (#1008)

unknown
created 2017-11-14 07:09 UTC
test_load_context_defaults() F

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dl	0
loc	22
rs	3.5324
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# -*- coding: utf-8 -*-
# flake8: noqa
"""
test_context
------------

Tests for `cookiecutter.context` module that handles prompts for v2 context.
"""
from __future__ import unicode_literals

import sys
import os.path
import time
import json
import logging

import pytest

from collections import OrderedDict

from cookiecutter import context

from cookiecutter.exceptions import (
    ContextDecodingException
)

import click

from uuid import UUID

logger = logging.getLogger(__name__)


def load_cookiecutter(cookiecutter_file):

    context = {}
    try:
        with open(cookiecutter_file) as file_handle:
            obj = json.load(file_handle, object_pairs_hook=OrderedDict)
    except ValueError as e:
        # JSON decoding error.  Let's throw a new exception that is more
        # friendly for the developer or user.
        full_fpath = os.path.abspath(cookiecutter_file)
        json_exc_message = str(e)
        our_exc_message = (
            'JSON decoding error while loading "{0}".  Decoding'
            ' error details: "{1}"'.format(full_fpath, json_exc_message))
        raise ContextDecodingException(our_exc_message)

    # Add the Python object to the context dictionary
    file_name = os.path.split(cookiecutter_file)[1]
    file_stem = file_name.split('.')[0]
    context[file_stem] = obj

    return context


def context_data_check():
    context_all_reqs = (
        {
            'cookiecutter_context': OrderedDict([
                ("name", "cookiecutter-pytest-plugin"),
                ("cookiecutter_version", "2.0.0"),
                ("variables", [])
            ])
        },
        True
    )

    context_missing_name = (
        {
            'cookiecutter_context': OrderedDict([
                ("cookiecutter_version", "2.0.0"),
                ("variables", [])
            ])
        },
        False
    )

    context_missing_cookiecutter_version = (
        {
            'cookiecutter_context': OrderedDict([
                ("name", "cookiecutter-pytest-plugin"),
                ("variables", [])
            ])
        },
        False
    )

    context_missing_variables = (
        {
            'cookiecutter_context': OrderedDict([
                ("name", "cookiecutter-pytest-plugin"),
                ("cookiecutter_version", "2.0.0"),
            ])
        },
        False
    )

    yield context_all_reqs
    yield context_missing_name
    yield context_missing_cookiecutter_version
    yield context_missing_variables


@pytest.mark.usefixtures('clean_system')
@pytest.mark.parametrize('input_params, expected_result', context_data_check())
def test_context_check(input_params, expected_result):
    """
    Test that a context with the required fields will be detected as a
    v2 context.
    """
    assert context.context_is_version_2(**input_params) == expected_result


@pytest.mark.usefixtures('clean_system')
def test_load_context_defaults():

    cc = load_cookiecutter('tests/test-context/cookiecutter.json')

    cc_cfg = context.load_context(cc['cookiecutter'], no_input=True)

    assert cc_cfg['full_name'] == 'Raphael Pierzina'
    assert cc_cfg['email'] == '[email protected]'
    assert cc_cfg['plugin_name'] == 'emoji'
    assert cc_cfg['module_name'] == 'emoji'
    assert cc_cfg['license'] == 'MIT'
    assert cc_cfg['docs'] is False
    assert 'docs_tool' not in cc_cfg.keys()   # skip_if worked
    assert cc_cfg['year'] == time.strftime('%Y')
    assert cc_cfg['incept_year'] == 2017
    assert cc_cfg['released'] is False
    assert cc_cfg['temperature'] == 77.3
    assert cc_cfg['Release-GUID'] == UUID('04f5eaa9ee7345469dccffc538b27194')
    assert cc_cfg['extensions'] == "['jinja2_time.TimeExtension']"
    assert cc_cfg['copy_with_out_render'] == "['*.html', '*not_rendered_dir', 'rendered_dir/not_rendered_file.ini']"
    assert cc_cfg['fixtures'] == OrderedDict([('foo',
                                               OrderedDict([('scope', 'session'),
                                                            ('autouse', True)])),
                                              ('bar',
                                               OrderedDict([('scope', 'function'),
                                                            ('autouse',
                                                             False)]))])


@pytest.mark.usefixtures('clean_system')
def test_load_context_defaults_skips_branch():
    """
    Test that if_no_skip_to and if_yes_skip_to actually do branch and
    skip variables
    """
    cc = load_cookiecutter('tests/test-context/cookiecutter_skips_1.json')

    cc_cfg = context.load_context(cc['cookiecutter_skips_1'], no_input=True)

    assert cc_cfg['project_configuration_enabled'] is False
    assert 'project_config_format' not in cc_cfg.keys()  # it was skipped

    assert cc_cfg['project_uses_existing_logging_facilities'] is True
    assert 'project_logging_enabled' not in cc_cfg.keys()  # it was skipped
    assert 'project_console_logging_enabled' not in cc_cfg.keys()  # it was skipped
    assert 'project_console_logging_level' not in cc_cfg.keys()  # it was skipped
    assert 'project_file_logging_enabled' not in cc_cfg.keys()  # it was skipped
    assert 'project_file_logging_level' not in cc_cfg.keys()  # it was skipped
    assert cc_cfg['github_username'] == 'eruber'


@pytest.mark.usefixtures('clean_system')
def test_load_context_defaults_skips_no_branch():
    """
    Test that if_no_skip_to and if_yes_skip_to do not branch and do not
    skip variables.
    """
    cc = load_cookiecutter('tests/test-context/cookiecutter_skips_2.json')

    cc_cfg = context.load_context(cc['cookiecutter_skips_2'], no_input=True)

    assert cc_cfg['project_configuration_enabled'] is True
    assert cc_cfg['project_config_format'] == 'toml'  # not skipped

    assert cc_cfg['project_uses_existing_logging_facilities'] is False
    assert cc_cfg['project_logging_enabled'] is True          # not skipped
    assert cc_cfg['project_console_logging_enabled'] is True  # not skipped
    assert cc_cfg['project_console_logging_level'] == 'WARN'  # not skipped
    assert cc_cfg['project_file_logging_enabled'] is True     # not skipped

    assert 'project_file_logging_level' not in cc_cfg.keys()  # do_if skipped

    assert cc_cfg['github_username'] == 'eruber'


@pytest.mark.usefixtures('clean_system')
def test_load_context_defaults_skips_unknown_variable_name_warning(caplog):
    """
    Test that a warning is issued if a variable.name specified in a skip_to
    directive is not in the variable list.
    """
    cc = load_cookiecutter('tests/test-context/cookiecutter_skips_3.json')

    cc_cfg = context.load_context(cc['cookiecutter_skips_3'], no_input=True)

    assert cc_cfg['project_uses_existing_logging_facilities'] is False
    assert 'project_logging_enabled' not in cc_cfg.keys()  # it was skipped
    assert 'project_console_logging_enabled' not in cc_cfg.keys()  # it was skipped
    assert 'project_console_logging_level' not in cc_cfg.keys()  # it was skipped
    assert 'project_file_logging_enabled' not in cc_cfg.keys()  # it was skipped
    assert 'project_file_logging_level' not in cc_cfg.keys()  # it was skipped
    assert 'github_username' not in cc_cfg.keys()  # it was skipped

    for record in caplog.records:
        assert record.levelname == 'WARNING'

    assert "Processed all variables, but skip_to_variable_name 'this_variable_name_is_not_in_the_list' was never found." in caplog.text


def test_prompt_string(mocker):


    EXPECTED_VALUE = 'Input String'

    mock_prompt = mocker.patch(
        'cookiecutter.prompt.click.prompt',
        autospec=True,
        return_value=EXPECTED_VALUE,
    )

    m = mocker.Mock()
    m.side_effect = context.Variable
    v = m.side_effect(name='name', default='', prompt='Enter Name', hide_input=False)

    r = context.prompt_string(v, default='Alpha')

    assert mock_prompt.call_args == mocker.call(
        v.prompt,
        default='Alpha',
        hide_input=v.hide_input,
        type=click.STRING,
    )

    assert r == EXPECTED_VALUE


def test_prompt_bool(mocker):

    EXPECTED_VALUE = True

    mock_prompt = mocker.patch(
        'cookiecutter.prompt.click.prompt',
        autospec=True,
        return_value=EXPECTED_VALUE,
    )

    m = mocker.Mock()
    m.side_effect = context.Variable
    v = m.side_effect(name='flag', default=False, prompt='Enter a Flag', hide_input=False)

    r = context.prompt_boolean(v, default=False)

    assert mock_prompt.call_args == mocker.call(
        v.prompt,
        default=False,
        hide_input=v.hide_input,
        type=click.BOOL,
    )

    assert r           # EXPECTED_VALUE


def test_prompt_int(mocker):


    EXPECTED_VALUE = 777

    mock_prompt = mocker.patch(
        'cookiecutter.prompt.click.prompt',
        autospec=True,
        return_value=EXPECTED_VALUE,
    )

    m = mocker.Mock()
    m.side_effect = context.Variable
    v = m.side_effect(name='port', default=1000, prompt='Enter Port', hide_input=False)

    r = context.prompt_int(v, default=1000)

    assert mock_prompt.call_args == mocker.call(
        v.prompt,
        default=1000,
        hide_input=v.hide_input,
        type=click.INT,
    )

    assert r == EXPECTED_VALUE


def test_prompt_float(mocker):


    EXPECTED_VALUE = 3.14

    mock_prompt = mocker.patch(
        'cookiecutter.prompt.click.prompt',
        autospec=True,
        return_value=EXPECTED_VALUE,
    )

    m = mocker.Mock()
    m.side_effect = context.Variable
    v = m.side_effect(name='PI', default=3.0, prompt='Enter PI', hide_input=False)

    r = context.prompt_float(v, default=3.0)

    assert mock_prompt.call_args == mocker.call(
        v.prompt,
        default=3.0,
        hide_input=v.hide_input,
        type=click.FLOAT,
    )

    assert r == EXPECTED_VALUE


def test_prompt_uuid(mocker):


    EXPECTED_VALUE = '931ef56c3e7b45eea0427bac386f0a98'

    mock_prompt = mocker.patch(
        'cookiecutter.prompt.click.prompt',
        autospec=True,
        return_value=EXPECTED_VALUE,
    )

    m = mocker.Mock()
    m.side_effect = context.Variable
    v = m.side_effect(name='uuid', default=None, prompt='Enter a UUID', hide_input=False)

    r = context.prompt_uuid(v, default=None)

    assert mock_prompt.call_args == mocker.call(
        v.prompt,
        default=None,
        hide_input=v.hide_input,
        type=click.UUID,
    )

    assert r == EXPECTED_VALUE


def test_prompt_json(monkeypatch, mocker):

    EXPECTED_VALUE = '{"port": 67888, "colors": ["red", "green", "blue"]}'

    mocker.patch(
        'click.termui.visible_prompt_func',
        autospec=True,
        return_value=EXPECTED_VALUE,
    )
    m = mocker.Mock()
    m.side_effect = context.Variable
    v = m.side_effect(name='json', default=None, prompt='Enter Config', hide_input=False)

    r = context.prompt_json(v, default=None)

    assert r == {"port": 67888, "colors": ["red", "green", "blue"]}


def test_prompt_json_bad_json_decode_click_asks_again(mocker, capsys):


    EXPECTED_BAD_VALUE = '{"port": 67888, "colors": ["red", "green", "blue"}'
    EXPECTED_GOOD_VALUE = '{"port": 67888, "colors": ["red", "green", "blue"]}'

    mocker.patch(
        'click.termui.visible_prompt_func',
        autospec=True,
        side_effect=[EXPECTED_BAD_VALUE, EXPECTED_GOOD_VALUE]
    )
    m = mocker.Mock()
    m.side_effect = context.Variable
    v = m.side_effect(name='json', default=None, prompt='Enter Config', hide_input=False)

    r = context.prompt_json(v, default=None)

    out, err = capsys.readouterr()
    assert 'Error: Unable to decode to JSON.' in out
    assert r == {"port": 67888, "colors": ["red", "green", "blue"]}


def test_prompt_json_default(mocker):

    EXPECTED_VALUE = 'default'

    cfg = '{"port": 67888, "colors": ["red", "green", "blue"]}'

    mock_prompt = mocker.patch(
        'cookiecutter.prompt.click.prompt',
        autospec=True,
        return_value=EXPECTED_VALUE,
    )

    m = mocker.Mock()
    m.side_effect = context.Variable
    v = m.side_effect(name='json', default=None, prompt='Enter Config', hide_input=False)

    r = context.prompt_json(v, default=cfg)

    assert mock_prompt.call_args == mocker.call(
        v.prompt,
        default='default',
        hide_input=v.hide_input,
        type=click.STRING,
        value_proc=mocker.ANY,
    )

    assert r == cfg


def test_prompt_yes_no_default_no(mocker):

    EXPECTED_VALUE = 'y'

    mock_prompt = mocker.patch(
        'cookiecutter.prompt.click.prompt',
        autospec=True,
        return_value=EXPECTED_VALUE,
    )

    m = mocker.Mock()
    m.side_effect = context.Variable
    v = m.side_effect(name='enable_docs', default='n', prompt='Enable docs', hide_input=False)

    r = context.prompt_yes_no(v, default=False)

    assert mock_prompt.call_args == mocker.call(
        v.prompt,
        default='n',
        hide_input=v.hide_input,
        type=click.BOOL,
    )

    assert r           # EXPECTED_VALUE


def test_prompt_yes_no_default_yes(mocker):

    EXPECTED_VALUE = 'y'

    mock_prompt = mocker.patch(
        'cookiecutter.prompt.click.prompt',
        autospec=True,
        return_value=EXPECTED_VALUE,
    )

    m = mocker.Mock()
    m.side_effect = context.Variable
    v = m.side_effect(name='enable_docs', default='y', prompt='Enable docs', hide_input=False)

    r = context.prompt_yes_no(v, default=True)

    assert mock_prompt.call_args == mocker.call(
        v.prompt,
        default='y',
        hide_input=v.hide_input,
        type=click.BOOL,
    )

    assert r           # EXPECTED_VALUE


def test_prompt_choice(mocker):


    LICENSES = ['ISC', 'MIT', 'BSD3']

    DEFAULT_LICENSE = 'ISC'

    EXPECTED_VALUE = '2'
    EXPECTED_LICENSE = 'MIT'

    mocker.patch(
        'cookiecutter.prompt.click.prompt',
        autospec=True,
        return_value=EXPECTED_VALUE,
    )

    m = mocker.Mock()
    m.side_effect = context.Variable
    v = m.side_effect(name='license', default=DEFAULT_LICENSE, choices=LICENSES,
                      prompt='Pick a License', hide_input=False)

    r = context.prompt_choice(v, default=DEFAULT_LICENSE)

    assert r == EXPECTED_LICENSE


def test_variable_invalid_type_exception():

    with pytest.raises(ValueError) as excinfo:
        context.Variable(name='badtype', default=None, type='color')

    assert 'Variable: badtype has an invalid type color' in str(excinfo.value)


def test_variable_invalid_default_choice():

    CHOICES = ['green', 'red', 'blue', 'yellow']

    with pytest.raises(ValueError) as excinfo:
        context.Variable(name='badchoice', default='purple', type='string',
                         choices=CHOICES)

    assert 'Variable: badchoice has an invalid default value purple for choices: {choices}'.format(choices=CHOICES) in str(excinfo.value)


def test_variable_invalid_validation_control_flag_is_logged_and_removed(caplog):

    with caplog.at_level(logging.INFO):
        v = context.Variable(
            'module_name',
            "{{cookiecutter.plugin_name|lower|replace('-','_')}}",
            prompt="Please enter a name for your base python module",
            type='string',
            validation='^[a-z_]+$',
            validation_flags=['ignorecase', 'forget', ],
            hide_input=True)

        for record in caplog.records:
            assert record.levelname == 'WARNING'

        assert "Variable: module_name - Ignoring unkown RegEx validation Control Flag named 'forget'" in caplog.text

        assert v.validation_flag_names == ['ignorecase']


def test_variable_validation_compile_exception():

    VAR_NAME = 'module_name'
    BAD_REGEX_STRING = '^[a-z_+$'   # Missing a closing square-bracket (])

    with pytest.raises(ValueError) as excinfo:
        context.Variable(
            VAR_NAME,
            "{{cookiecutter.plugin_name|lower|replace('-','_')}}",
            prompt="Please enter a name for your base python module",
            type='string',
            validation=BAD_REGEX_STRING,
            validation_flags=['ignorecase'],
            hide_input=True)

    assert "Variable: {var_name} - Validation Setup Error: Invalid RegEx '{value}' - does not compile - ".format(var_name=VAR_NAME, value=BAD_REGEX_STRING) in str(excinfo.value)


def test_variable_forces_no_prompt_for_private_variable_names():
    v = context.Variable(
        '_private_variable_name',
        "{{cookiecutter.plugin_name|lower|replace('-','_')}}",
        prompt="Please enter a name for your base python module",
        prompt_user=True,
        type='string',
        validation='^[a-z_]+$',
        validation_flags=['ignorecase'],
        hide_input=True)

    assert v.prompt_user is False


def test_variable_repr():

    v = context.Variable(
        'module_name',
        "{{cookiecutter.plugin_name|lower|replace('-','_')}}",
        prompt="Please enter a name for your base python module",
        type='string',
        validation='^[a-z_]+$',
        validation_flags=['ignorecase'],
        hide_input=True)

    assert repr(v) == "<Variable module_name>"


def test_variable_str():

    v = context.Variable(
        'module_name',
        "{{cookiecutter.plugin_name|lower|replace('-','_')}}",
        prompt="Please enter a name for your base python module",
        type='string',
        validation='^[a-z_]+$',
        validation_flags=['ignorecase'],
        hide_input=True)

    assert '<Variable module_name>:' in str(v)
    assert "name='module_name'" in str(v)
    assert "default='{{cookiecutter.plugin_name|lower|replace('-','_')}}'" in str(v)
    assert "description='None'" in str(v)
    assert "prompt='Please enter a name for your base python module'" in str(v)
    assert "hide_input='True'" in str(v)
    assert "var_type='string'" in str(v)
    assert "skip_if=''" in str(v)
    assert "prompt_user='True'" in str(v)
    assert "choices='[]'" in str(v)
    assert "validation='^[a-z_]+$'" in str(v)
    assert "validation_flag_names='['ignorecase']'" in str(v)
    assert "validation_flags='2'" in str(v)

    if sys.version_info >= (3, 4):
        assert "validate='re.compile('^[a-z_]+$', re.IGNORECASE)'" in str(v)
    else:
        assert "validate='<_sre.SRE_Pattern object at" in str(v)


def test_variable_option_raise_invalid_type_value_error():

    VAR_NAME = 'module_name'
    OPT_VALUE_OF_INCORRECT_TYPE = 12   # should be a string

    with pytest.raises(ValueError) as excinfo:
        context.Variable(
            VAR_NAME,
            "{{cookiecutter.plugin_name|lower|replace('-','_')}}",
            prompt="Please enter a name for your base python module",
            type='string',
            validation=OPT_VALUE_OF_INCORRECT_TYPE,
            validation_flags=['ignorecase'],
            hide_input=True)

    msg = "Variable: '{var_name}' Option: 'validation' requires a value of type str, but has a value of: {value}"
    assert msg.format(var_name=VAR_NAME, value=OPT_VALUE_OF_INCORRECT_TYPE) in str(excinfo.value)


def test_cookiecutter_template_repr():
    #  name, cookiecutter_version, variables, **info

    cct = context.CookiecutterTemplate('cookiecutter_template_repr_test',
                                       cookiecutter_version='2.0.0', variables=[])

    assert repr(cct) == "<CookiecutterTemplate cookiecutter_template_repr_test>"


def test_load_context_with_input_chioces(mocker):

    cc = load_cookiecutter('tests/test-context/cookiecutter_choices.json')

    INPUT_1 = 'E.R. Uber'
    INPUT_2 = '[email protected]'
    INPUT_3 = '2'  # 'MIT'
    mocker.patch(
        'click.termui.visible_prompt_func',
        autospec=True,
        side_effect=[INPUT_1, INPUT_2, INPUT_3]
    )

    cc_cfg = context.load_context(cc['cookiecutter_choices'], no_input=False)

    assert cc_cfg['full_name'] == INPUT_1
    assert cc_cfg['email'] == INPUT_2
    assert cc_cfg['license'] == 'MIT'


def test_load_context_with_input_with_validation_success(mocker):

    cc = load_cookiecutter('tests/test-context/cookiecutter_val_success.json')

    INPUT_1 = 'Image Module Maker'
    INPUT_2 = ''
    mocker.patch(
        'click.termui.visible_prompt_func',
        autospec=True,
        side_effect=[INPUT_1, INPUT_2]
    )

    logger.debug(cc)

    cc_cfg = context.load_context(cc['cookiecutter_val_success'], no_input=False)

    assert cc_cfg['project_name'] == INPUT_1
    assert cc_cfg['module_name'] == 'image_module_maker'


def test_load_context_with_input_with_validation_failure(mocker, capsys):

    cc = load_cookiecutter('tests/test-context/cookiecutter_val_failure.json')

    INPUT_1 = '6 Debug Shell'
    INPUT_2 = ''
    INPUT_3 = 'debug_shell'
    mocker.patch(
        'click.termui.visible_prompt_func',
        autospec=True,
        side_effect=[INPUT_1, INPUT_2, INPUT_3]
    )

    cc_cfg = context.load_context(cc['cookiecutter_val_failure'], no_input=False)

    out, err = capsys.readouterr()

    msg = "Input validation failure against regex: '^[a-z_]+$', try again!"
    assert msg in out

    assert cc_cfg['project_name'] == INPUT_1
    assert cc_cfg['module_name'] == INPUT_3


def test_load_context_with_input_with_validation_failure_msg(mocker, capsys):

    cc = load_cookiecutter('tests/test-context/cookiecutter_val_failure_msg.json')

    INPUT_1 = '6 Debug Shell'
    INPUT_2 = ''
    INPUT_3 = 'debug_shell'
    mocker.patch(
        'click.termui.visible_prompt_func',
        autospec=True,
        side_effect=[INPUT_1, INPUT_2, INPUT_3]
    )

    cc_cfg = context.load_context(cc['cookiecutter_val_failure_msg'], no_input=False)

    out, err = capsys.readouterr()

    msg = "Input validation failure against regex: '^[a-z_]+$', try again!"
    assert msg in out

    msg2 = "Really, you couldn't get this correct the first time?"
    assert msg2 in out

    assert cc_cfg['project_name'] == INPUT_1
    assert cc_cfg['module_name'] == INPUT_3


def test_specify_if_yes_skip_to_without_yes_no_type():
    """
    Test ValueError is raised when a variable specifies an if_yes_skip_to
    field and the variable type is not 'yes+no'
    """
    with pytest.raises(ValueError) as excinfo:
        context.Variable(name='author', default='JKR', type='string',
                         if_yes_skip_to='roman')

    assert "Variable: 'author' specifies 'if_yes_skip_to' field, but variable not of type 'yes_no'" in str(excinfo.value)


def test_specify_if_no_skip_to_without_yes_no_type():
    """
    Test ValueError is raised when a variable specifies an if_no_skip_to
    field and the variable type is not 'yes+no'
    """
    with pytest.raises(ValueError) as excinfo:
        context.Variable(name='author', default='JKR', type='string',
                         if_no_skip_to='roman')

    assert "Variable: 'author' specifies 'if_no_skip_to' field, but variable not of type 'yes_no'" in str(excinfo.value)

audreyr / cookiecutter

Pull Request — master (#1008)

test_load_context_defaults() F

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