Using immutable map instead of mutables to generate parameters

hoodie-spark/src/test/scala/com/uber/hoodie/HoodieSparkSqlWriterSuite.scala

@@ -0,0 +1,41 @@
+/*
+ *  Copyright (c) 2017 Uber Technologies, Inc. (hoodie-dev-group@uber.com)
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *           http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ *
+ */
+package com.uber.hoodie
+
+import org.scalatest.{FunSuite, Matchers}
+import DataSourceWriteOptions._
+
+class HoodieSparkSqlWriterSuite extends FunSuite with Matchers {
+
+  test("Parameters With Write Defaults") {
+    val originals = HoodieSparkSqlWriter.parametersWithWriteDefaults(Map.empty)
+    val rhsKey = "hoodie.right.hand.side.key"
+    val rhsVal = "hoodie.right.hand.side.val"
+    val modifier = Map(OPERATION_OPT_KEY -> INSERT_OPERATION_OPT_VAL, STORAGE_TYPE_OPT_KEY -> MOR_STORAGE_TYPE_OPT_VAL, rhsKey -> rhsVal)
+    val modified = HoodieSparkSqlWriter.parametersWithWriteDefaults(modifier)
+    val matcher = (k: String, v: String) => modified(k) should be(v)
+
+    originals foreach {
+      case (OPERATION_OPT_KEY, _) => matcher(OPERATION_OPT_KEY, INSERT_OPERATION_OPT_VAL)
+      case (STORAGE_TYPE_OPT_KEY, _) => matcher(STORAGE_TYPE_OPT_KEY, MOR_STORAGE_TYPE_OPT_VAL)
+      case (`rhsKey`, _) => matcher(rhsKey, rhsVal)
+      case (k, v) => matcher(k, v)
+    }
+  }
+
+}