From d15de422b973a020d5aa9035016c1274262631fb Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Fran=C3=A7ois=20Garillot?= <francois@garillot.net>
Date: Wed, 15 Jul 2015 13:14:31 +0200
Subject: [PATCH] [SPARK-8975][Streaming] Adds Ratelimiter unit tests w.r.t.
 spark.streaming.receiver.maxRate

---
 .../streaming/receiver/RateLimiterSuite.scala | 47 +++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100644 streaming/src/test/scala/org/apache/spark/streaming/receiver/RateLimiterSuite.scala

diff --git a/streaming/src/test/scala/org/apache/spark/streaming/receiver/RateLimiterSuite.scala b/streaming/src/test/scala/org/apache/spark/streaming/receiver/RateLimiterSuite.scala
new file mode 100644
index 0000000000000..904c7773c5f2c
--- /dev/null
+++ b/streaming/src/test/scala/org/apache/spark/streaming/receiver/RateLimiterSuite.scala
@@ -0,0 +1,47 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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 org.apache.spark.streaming.receiver
+
+import org.apache.spark.SparkConf
+import org.apache.spark.SparkFunSuite
+
+/** Testsuite for testing the network receiver behavior */
+class RateLimiterSuite extends SparkFunSuite {
+
+  test("rate limiter initializes even without a maxRate set") {
+    val conf = new SparkConf()
+    val rateLimiter = new RateLimiter(conf){}
+    rateLimiter.updateRate(105)
+    assert(rateLimiter.currentRateLimit.get == 105)
+  }
+
+  test("rate limiter updates when below maxRate") {
+    val conf = new SparkConf().set("spark.streaming.receiver.maxRate", "110")
+    val rateLimiter = new RateLimiter(conf){}
+    rateLimiter.updateRate(105)
+    assert(rateLimiter.currentRateLimit.get == 105)
+  }
+
+  test("rate limiter stays below maxRate despite large updates") {
+    val conf = new SparkConf().set("spark.streaming.receiver.maxRate", "100")
+    val rateLimiter = new RateLimiter(conf){}
+    rateLimiter.updateRate(105)
+    assert(rateLimiter.currentRateLimit.get == 100)
+  }
+
+}