diff --git a/treeherder/perfalert/perfalert/test_analyze.py b/treeherder/perfalert/perfalert/test_analyze.py
new file mode 100644
index 000000000..cb968848a
--- /dev/null
+++ b/treeherder/perfalert/perfalert/test_analyze.py
@@ -0,0 +1,42 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this file,
+# You can obtain one at http://mozilla.org/MPL/2.0/.
+import unittest
+from analyze import *
+
+class TestAnalyze(unittest.TestCase):
+    def test_analyze(self):
+        self.assertEqual(analyze([]),
+            {"avg": 0.0, "n": 0, "variance": 0.0})
+        self.assertEqual(analyze([3.0]),
+            {"avg": 3.0, "n": 1, "variance": 0.0})
+        self.assertEqual(analyze([1.0, 2.0, 3.0, 4.0]),
+            {"avg": 2.5, "n": 4, "variance": 5.0/3.0})
+
+    def test_calc_t(self):
+        self.assertEqual(calc_t([0.0, 0.0], [1.0, 2.0]), 3.0)
+
+class TestTalosAnalyzer(unittest.TestCase):
+    def get_data(self):
+        times  = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15]
+        values = [0, 0, 0, 0, 0, 0, 0, 0, 1, 1,  1,  1,  1,  1,  1,  1]
+        return [PerfDatum(t, t, t, float(v), t, t) for t, v in zip(times, values)]
+
+    def test_analyze_t(self):
+        a = TalosAnalyzer()
+
+        data = self.get_data()
+        a.addData(data)
+
+        result = [(d.time, state) for d, state in a.analyze_t(5, 5, 2, 15, 5)]
+        self.assertEqual(result, [
+            (5, 'good'),
+            (6, 'good'),
+            (7, 'good'),
+            (8, 'good'),
+            (9, 'good'),
+            (10, 'regression'),
+            (11, 'good')])
+
+if __name__ == '__main__':
+    unittest.main()