Initial import

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diff --git a/lulua/test_optimize.py b/lulua/test_optimize.py
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+# Copyright (c) 2019 lulua contributors
+# 
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+# 
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+# 
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+
+from .optimize import Annealer
+
+class NullAnnealer (Annealer):
+    """ Simple dummy annealer for testing """
+    def energy (self):
+        return sum (self.state)
+
+    def mutate (self):
+        prev = self.energy ()
+        self.state = [x-1 for x in self.state]
+        return self.energy () - prev
+
+def test_null_annealer ():
+    dut = NullAnnealer ([1, 2, 3])
+    optimal, energy = dut.run (1)
+    assert optimal == [0, 1, 2]
+    assert energy == sum ([0, 1, 2])-sum([1, 2, 3])
+    assert dut.energy () == sum([0, 1, 2])
+