Add some paltry unit tests

Makefile

@@ -5,3 +5,8 @@ groundstation/proto/gizmo_pb2.py: groundstation/proto/gizmo.proto
 
 clean:
 	find ./ -iname "*.pyc" -delete
+
+_test:
+
+test: _test
+	python -m unittest discover test

test/station_fixture.py

@@ -0,0 +1,14 @@
+import tempfile
+import shutil
+import unittest
+
+from groundstation.node import Node
+from groundstation.station import Station
+
+class StationTestCase(unittest.TestCase):
+    def setUp(self):
+        self.node = Node()
+        self.station = Station(tempfile.mkdtemp(), self.node)
+
+    def tearDown(self):
+        shutil.rmtree(self.station.repo.path)

test/test_station.py

@@ -0,0 +1,9 @@
+from station_fixture import StationTestCase
+
+class TestStationObjectCache(StationTestCase):
+    """Proves that querying for an unknown object returns false, then true"""
+    def test_recently_queried(self):
+        self.assertFalse(self.station.recently_queried("rawrtest"))
+        self.assertTrue(self.station.recently_queried("rawrtest"))
+        self.assertFalse(self.station.recently_queried("rawrtestSomeOther"))
+