closes #2019: Use parentheses for arity-0 methods which are not referentially transparent

akka-docs/scala/code/akka/docs/actor/FaultHandlingDocSpec.scala

@@ -112,7 +112,7 @@ class FaultHandlingDocSpec extends AkkaSpec with ImplicitSender {
         watch(child) // have testActor watch “child”
         child ! new IllegalArgumentException // break it
         expectMsg(Terminated(child))
-        child.isTerminated must be(true)
+        child.isTerminated() must be(true)
         //#stop
       }
       EventFilter[Exception]("CRASH", occurrences = 4) intercept {
@@ -147,4 +147,4 @@ class FaultHandlingDocSpec extends AkkaSpec with ImplicitSender {
     }
   }
 }
-//#testkit
+//#testkit

akka-docs/scala/code/akka/docs/dispatcher/DispatcherDocSpec.scala

@@ -216,7 +216,7 @@ class DispatcherDocSpec extends AkkaSpec(DispatcherDocSpec.config) {
     */
     //#prio-dispatcher
 
-    awaitCond(a.isTerminated, 5 seconds)
+    awaitCond(a.isTerminated(), 5 seconds)
   }
 
   "defining balancing dispatcher" in {

akka-docs/scala/code/akka/docs/testkit/TestkitDocSpec.scala

@@ -209,7 +209,7 @@ class TestkitDocSpec extends AkkaSpec with DefaultTimeout with ImplicitSender {
     val future = probe.ref ? "hello"
     probe.expectMsg(0 millis, "hello") // TestActor runs on CallingThreadDispatcher
     probe.sender ! "world"
-    assert(future.isCompleted && future.value == Some(Right("world")))
+    assert(future.isCompleted() && future.value == Some(Right("world")))
     //#test-probe-reply
   }