121 lines
3.6 KiB
Python
121 lines
3.6 KiB
Python
"""Tools for helping with testing capa."""
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import gettext
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import io
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import os
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import os.path
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from unittest.mock import MagicMock, Mock
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from xml.sax import saxutils
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import fs.osfs
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from django.template.loader import get_template as django_get_template
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from xmodule.capa.capa_problem import LoncapaProblem, LoncapaSystem
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from xmodule.capa.inputtypes import Status
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TEST_DIR = os.path.dirname(os.path.realpath(__file__))
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def get_template(template_name):
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"""
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Return template for a capa inputtype.
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"""
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return django_get_template(template_name)
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def capa_render_template(template, context):
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"""
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Render template for a capa inputtype.
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"""
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return get_template(template).render(context)
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def tst_render_template(template, context): # pylint: disable=unused-argument
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"""
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A test version of render to template. Renders to the repr of the context, completely ignoring
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the template name. To make the output valid xml, quotes the content, and wraps it in a <div>
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"""
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return f"<div>{saxutils.escape(repr(context))}</div>"
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class StubXQueueService: # pylint: disable=too-few-public-methods
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"""
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Stubs out the XQueueService for Capa problem tests.
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"""
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def __init__(self):
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"""Initialize the stubbed XQueueService instance."""
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self.interface = MagicMock()
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self.interface.send_to_queue.return_value = (0, "Success!")
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self.default_queuename = "testqueue"
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self.waittime = 10
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def construct_callback(self, dispatch="score_update"):
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"""A callback url method to use in tests."""
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return dispatch
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def mock_capa_system(render_template=None):
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"""
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Construct a mock LoncapaSystem instance.
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"""
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the_system = Mock(
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spec=LoncapaSystem,
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ajax_url="/dummy-ajax-url",
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anonymous_student_id="student",
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cache=None,
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can_execute_unsafe_code=lambda: False,
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get_python_lib_zip=lambda: None,
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DEBUG=True,
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i18n=gettext.NullTranslations(),
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render_template=render_template or tst_render_template,
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resources_fs=fs.osfs.OSFS(os.path.join(TEST_DIR, "test_files")),
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seed=0,
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STATIC_URL="/dummy-static/",
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STATUS_CLASS=Status,
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xqueue=StubXQueueService(),
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)
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return the_system
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def mock_capa_block():
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"""
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capa response types needs just two things from the capa_block: location and publish.
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"""
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def mock_location_text(self): # pylint: disable=unused-argument
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"""
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Mock implementation of __unicode__ or __str__ for the block's location.
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"""
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return "i4x://Foo/bar/mock/abc"
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capa_block = Mock()
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capa_block.location.__str__ = mock_location_text
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# The following comes into existence by virtue of being called
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# capa_block.runtime.publish
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return capa_block
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def new_loncapa_problem(xml, problem_id="1", capa_system=None, seed=723, use_capa_render_template=False):
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"""Construct a `LoncapaProblem` suitable for unit tests."""
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render_template = capa_render_template if use_capa_render_template else None
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return LoncapaProblem(
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xml,
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id=problem_id,
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seed=seed,
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capa_system=capa_system or mock_capa_system(render_template),
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capa_block=mock_capa_block(),
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)
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def load_fixture(relpath):
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"""
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Return a `unicode` object representing the contents
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of the fixture file at the given path within a test_files directory
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in the same directory as the test file.
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"""
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abspath = os.path.join(os.path.dirname(__file__), "test_files", relpath)
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with io.open(abspath, encoding="utf-8") as fixture_file:
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contents = fixture_file.read()
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return contents
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