simulated annealing output chooser

src/test_writer.py

@@ -3,6 +3,30 @@ import unittest
 import writer
 
 class TestLineChooser(unittest.TestCase):
+   def test_simulated_annealing(self):
+      chooser = writer.LineChooserSimulatedAnnealing()
+      chooser.now = lambda *args: 100
+
+      for name, c in ({
+         "fresh something": [
+            writer.LineChooserSimulatedAnnealing.initial_health,
+            chooser.now(),
+         ],
+         "old something": [
+            writer.LineChooserSimulatedAnnealing.initial_health - writer.LineChooserSimulatedAnnealing.decay_rate * 5,
+            chooser.now() - 5,
+         ],
+         "fresh nothing": [
+            writer.LineChooserSimulatedAnnealing.initial_health - writer.LineChooserSimulatedAnnealing.nothing_penalty,
+            chooser.now(),
+         ],
+      }).items():
+         self.assertEqual(
+            c[0],
+            chooser.health(self.new_line(True, c[1], not "nothing" in name)),
+            name,
+         )
+
    def test_latest_sticky(self):
       stale_something = self.new_line(False, 1, 1)
       stale_nothing = self.new_line(False, 1, None)