add a basic learn/retrieve test since I broke it a while back

tests/fixtures/markov_fixture.json

@@ -0,0 +1,19 @@
+[
+{
+    "model": "markov.markovcontext",
+    "pk": 1,
+    "fields": {
+        "name": "#factory"
+    }
+},
+{
+    "model": "markov.markovtarget",
+    "pk": 1,
+    "fields": {
+        "name": "#factory",
+        "context": 1,
+        "channel": 1,
+        "chatter_chance": 0
+    }
+}
+]

tests/test_markov_lib.py

@@ -0,0 +1,17 @@
+"""Test markov utility methods."""
+from django.test import TestCase
+
+from markov.lib import get_word_out_of_states, learn_line
+from markov.models import MarkovContext, MarkovState
+
+
+class MarkovLibTestCase(TestCase):
+    """Test library methods used by the Markov plugin."""
+
+    fixtures = ['tests/fixtures/irc_server_fixture.json', 'tests/fixtures/markov_fixture.json']
+
+    def test_learn_and_get(self):
+        """Test that we can learn some lines and get a word back."""
+        learn_line("the elephant goes ERRRRRRRRRRRRR", MarkovContext.objects.get(pk=1))
+        word = get_word_out_of_states(MarkovState.objects.all())
+        self.assertIn(word, ['the', 'elephant', 'goes', 'ERRRRRRRRRRRRR', '__stop'])