Support READ-COMMITTED isolation (#147)

Author: brfrn169

scalardb/src/scalardb/db_extend.clj

@@ -23,7 +23,7 @@
   [test properties]
   (doto properties
     (.setProperty "scalar.db.consensus_commit.isolation_level"
-                  (-> test :isolation-level name string/upper-case))
+                  (-> test :isolation-level name string/upper-case (string/replace #"-" "_")))
     (.setProperty "scalar.db.consensus_commit.coordinator.group_commit.enabled"
                   (str (:enable-group-commit test)))
     (.setProperty "scalar.db.consensus_commit.coordinator.group_commit.slot_capacity" "4")

scalardb/src/scalardb/runner.clj

@@ -115,8 +115,8 @@
    [nil "--isolation-level ISOLATION_LEVEL" "isolation level"
     :default :snapshot
     :parse-fn keyword
-    :validate [#{:snapshot :serializable}
-               "Should be one of snapshot or serializable"]]
+    :validate [#{:read-committed :snapshot :serializable}
+               "Should be one of read-committed, snapshot, or serializable"]]
 
    (cli/repeated-opt nil "--consistency-model CONSISTENCY_MODEL"
                      "consistency model to be checked"