Add start of test framework for capa

common/lib/xmodule/xmodule/tests/test_capa_module.py

+import json
+from mock import Mock
+import unittest
+
+from xmodule.capa_module import CapaModule
+from xmodule.modulestore import Location
+from lxml import etree
+
+from . import test_system
+
+class CapaFactory(object):
+    """
+    A helper class to create problem modules with various parameters for testing.
+    """
+
+    sample_problem_xml = """<?xml version="1.0"?>
+<problem>
+  <text>
+    <p>What is pi, to two decimal placs?</p>
+  </text>
+<numericalresponse answer="3.14">
+<textline math="1" size="30"/>
+</numericalresponse>
+</problem>
+"""
+
+    num = 0
+    @staticmethod
+    def next_num():
+        CapaFactory.num += 1
+        return CapaFactory.num
+
+    @staticmethod
+    def create():
+        definition = {'data': CapaFactory.sample_problem_xml,}
+        location = Location(["i4x", "edX", "capa_test", "problem",
+                             "SampleProblem{0}".format(CapaFactory.next_num())])
+        metadata = {}
+        descriptor = Mock(weight="1")
+        instance_state = None
+
+        module = CapaModule(test_system, location,
+                            definition, descriptor,
+                                      instance_state, None, metadata=metadata)
+
+        return module
+
+
+
+class CapaModuleTest(unittest.TestCase):
+
+    def test_import(self):
+        module = CapaFactory.create()
+        self.assertEqual(module.get_score()['score'], 0)
+
+        other_module = CapaFactory.create()
+        self.assertEqual(module.get_score()['score'], 0)
+        self.assertNotEqual(module.url_name, other_module.url_name,
+                            "Factory should be creating unique names for each problem")
+