Move streaming test initialization into 'before' blocks

streaming/src/test/scala/spark/streaming/BasicOperationsSuite.scala

@@ -6,10 +6,12 @@ import util.ManualClock
 
 class BasicOperationsSuite extends TestSuiteBase {
 
-  System.setProperty("spark.streaming.clock", "spark.streaming.util.ManualClock")
-
   override def framework() = "BasicOperationsSuite"
 
+  before {
+    System.setProperty("spark.streaming.clock", "spark.streaming.util.ManualClock")
+  }
+
   after {
     // To avoid Akka rebinding to the same port, since it doesn't unbind immediately on shutdown
     System.clearProperty("spark.driver.port")

streaming/src/test/scala/spark/streaming/InputStreamsSuite.scala

@@ -30,12 +30,14 @@ import com.google.common.io.Files
 
 class InputStreamsSuite extends TestSuiteBase with BeforeAndAfter {
 
-  System.setProperty("spark.streaming.clock", "spark.streaming.util.ManualClock")
-
   val testPort = 9999
 
   override def checkpointDir = "checkpoint"
 
+  before {
+    System.setProperty("spark.streaming.clock", "spark.streaming.util.ManualClock")
+  }
+
   after {
     // To avoid Akka rebinding to the same port, since it doesn't unbind immediately on shutdown
     System.clearProperty("spark.driver.port")