Add expectNoMessage to subscriber probe

akka-docs/src/test/scala/docs/stream/cookbook/RecipeGlobalRateLimit.scala

@@ -115,11 +115,11 @@ class RecipeGlobalRateLimit extends RecipeSpec {
 
       probe.expectNext() should startWith("E")
       probe.expectNext() should startWith("E")
-      probe.expectNoMsg(500.millis)
+      probe.expectNoMessage()
 
       limiter ! Limiter.ReplenishTokens
       probe.expectNext() should startWith("E")
-      probe.expectNoMsg(500.millis)
+      probe.expectNoMessage()
 
       var resultSet = Set.empty[String]
       for (_ <- 1 to 100) {

akka-docs/src/test/scala/docs/stream/cookbook/RecipeMissedTicks.scala

@@ -45,7 +45,7 @@ class RecipeMissedTicks extends RecipeSpec {
       sub.expectNext(3)
 
       subscription.request(1)
-      sub.expectNoMsg(100.millis)
+      sub.expectNoMessage()
 
       pub.sendNext(())
       sub.expectNext(0)

akka-docs/src/test/scala/docs/stream/cookbook/RecipeSimpleDrop.scala

@@ -33,7 +33,7 @@ class RecipeSimpleDrop extends RecipeSpec {
       messageSource.via(realDroppyStream).to(sink).run()
 
       val subscription = sub.expectSubscription()
-      sub.expectNoMsg(100.millis)
+      sub.expectNoMessage()
 
       pub.sendNext("1")
       pub.sendNext("2")

akka-stream-testkit/src/main/scala/akka/stream/testkit/StreamTestKit.scala

@@ -625,6 +625,18 @@ object TestSubscriber {
       self
     }
 
+    /**
+     * Fluent DSL
+     *
+     * Assert that no message is received for the specified time.
+     * Waits for the default period configured as `akka.test.expect-no-message-default`.
+     * That timeout is scaled using the configuration entry "akka.test.timefactor".
+     */
+    def expectNoMessage(): Self = {
+      probe.expectNoMessage()
+      self
+    }
+
     /**
      * Java API: Assert that no message is received for the specified time.
      */

akka-stream-tests/src/test/scala/akka/stream/scaladsl/FlowAskSpec.scala

@@ -108,7 +108,7 @@ class FlowAskSpec extends StreamSpec {
       sub.request(2)
       c.expectNext(Reply(1))
       c.expectNext(Reply(2))
-      c.expectNoMessage(200.millis)
+      c.expectNoMessage()
       sub.request(2)
       c.expectNext(Reply(3))
       c.expectComplete()
@@ -120,7 +120,7 @@ class FlowAskSpec extends StreamSpec {
       sub.request(2)
       c.expectNext(Reply(1))
       c.expectNext(Reply(2))
-      c.expectNoMessage(200.millis)
+      c.expectNoMessage()
       sub.request(2)
       c.expectNext(Reply(3))
       c.expectComplete()
@@ -132,7 +132,7 @@ class FlowAskSpec extends StreamSpec {
       sub.request(2)
       c.expectNext(Reply(1))
       c.expectNext(Reply(2))
-      c.expectNoMessage(200.millis)
+      c.expectNoMessage()
       sub.request(2)
       c.expectNext(Reply(3))
       c.expectComplete()