Preliminary support for writing tests in python

test_conflict_set.py

@@ -0,0 +1,9 @@
+from conflict_set import *
+
+
+def test_conflict_set():
+    with ConflictSet() as cs:
+        cs.addWrites(1, write(b""))
+        assert cs.check(read(0, b"")) == [Result.CONFLICT]
+        cs.setOldestVersion(1)
+        assert cs.check(read(0, b"")) == [Result.TOO_OLD]