refactor tests into multiple files for control in travis, easier editing

tests/test_klee.py

@@ -0,0 +1,14 @@
+from __future__ import print_function
+import deepstate_base
+import logrun
+
+
+class KleeTest(deepstate_base.DeepStateTestCase):
+  def run_deepstate(self, deepstate):
+    (r, output) = logrun.logrun([deepstate, "build/examples/Klee", "--klee"],
+                  "deepstate.out", 1800)
+    self.assertEqual(r, 0)
+
+    self.assertTrue("zero" in output)
+    self.assertTrue("positive" in output)
+    self.assertTrue("negative" in output)