diff --git a/odelay-core/js/src/main/scala/platform.scala b/odelay-core/js/src/main/scala/platform.scala
index 8c5a522..a41926f 100644
--- a/odelay-core/js/src/main/scala/platform.scala
+++ b/odelay-core/js/src/main/scala/platform.scala
@@ -1,5 +1,5 @@
 package odelay
 
 private[odelay] object platform {
-  implicit val defaultTimer: Timer = null
+  implicit val defaultTimer: Timer = odelay.js.JsTimer.newTimer 
 }
diff --git a/odelay-testing/js/src/test/scala/TimerSpec.scala b/odelay-testing/js/src/test/scala/TimerSpec.scala
index 7fb9814..ea1a99b 100644
--- a/odelay-testing/js/src/test/scala/TimerSpec.scala
+++ b/odelay-testing/js/src/test/scala/TimerSpec.scala
@@ -1,91 +1,14 @@
 package odelay.testing
 
 import odelay.{ Delay, Timer }
-import org.scalatest.{ BeforeAndAfterAll, AsyncFunSpec }
-import scala.concurrent.Await
+import org.scalatest.{ BeforeAndAfterAll, AsyncFunSpec, Matchers }
+import scala.concurrent._
 import scala.concurrent.duration._
 import scala.util.control.NonFatal
 import java.util.concurrent.CancellationException
 import java.util.concurrent.atomic.AtomicInteger
-import odelay.js._
 
-class TimerSpec extends AsyncFunSpec with BeforeAndAfterAll {
-
-  // needed so we do not get a scalatest EC error
-  implicit override def executionContext =
-    scala.concurrent.ExecutionContext.Implicits.global
-
-  val newTimer: Timer = JsTimer.newTimer
-  val timerName: String = "jstimer"
-  implicit val timer = newTimer
-
-  describe (timerName) {
-    it ("should execute an operation after an initial delay") {
-      val start = System.currentTimeMillis
-      val fut = Delay(1.seconds) {
-        System.currentTimeMillis - start
-      }.future
-      fut.map(value => assert(value.millis.toSeconds.seconds === 1.seconds))
-    }
-
-    it ("should permit cancellation of delayed operations") {
-      val cancel = Delay(1.seconds)(sys.error("this should never print"))
-      val fut = Delay(150.millis) {
-        cancel.cancel()
-      }.future
-      fut.map(_ => succeed)
-    }
-
-    it ("cancellation of delayed operations should result in future failure") {
-      val cancel = Delay(1.second)(sys.error("this should never print"))
-      Delay(150.millis) {
-        cancel.cancel()
-      }
-      cancel.future.recover {
-        case x: CancellationException => succeed
-        case _ => fail
-      }
-    }
-    
-    it ("completion of delayed operations should result in a future success") {
-      val future = Delay(1.second)(true).future
-      future.recover {
-        case NonFatal(_) => sys.error("this should never print")
-      }.map ( value => assert(value === true))
-    }
-
-    it ("should repeatedly execute an operation on a fixed delay") {
-      val start = System.currentTimeMillis
-      val delay = Delay.every(150.millis)() {
-        val diff = System.currentTimeMillis - start
-        print('.')
-        diff
-      }
-      delay.future.failed.foreach { _ => println() }
-      val cancelit = Delay(5.seconds) {
-        delay.cancel()
-      }
-      cancelit.future.map(_ => succeed)
-    }
-
-    it ("cancellation of repeatedly delayed operations should result in future failure") {
-      val cancel = Delay.every(150.seconds)()(true)
-      val counter = new AtomicInteger(0)
-      cancel.future.onFailure {
-        case NonFatal(e) =>
-          assert(e.getClass === classOf[CancellationException])
-          counter.incrementAndGet()
-      }
-
-      val canceltrueloop = Delay(2.seconds) {
-        cancel.cancel()
-      }
-      canceltrueloop.future.map(_ => assert(counter.get() === 1))
-    }
-
-  }
-
-  override def afterAll() {
-    timer.stop()
-  }
+class TimerSpecJS extends TimerSpec {
+  def newTimer = new odelay.js.JsTimer()
+  def timerName: String = "jstimer"
 }
diff --git a/odelay-testing/jvm/src/test/scala/TimerSpec.scala b/odelay-testing/jvm/src/test/scala/TimerSpec.scala
index af6b35c..aef446f 100644
--- a/odelay-testing/jvm/src/test/scala/TimerSpec.scala
+++ b/odelay-testing/jvm/src/test/scala/TimerSpec.scala
@@ -1,87 +1,9 @@
 package odelay.testing
 
-import odelay.{ Delay, Timer }
-import org.scalatest.{ BeforeAndAfterAll, AsyncFunSpec }
-import scala.concurrent._
-import scala.concurrent.duration._
-import scala.util.control.NonFatal
-import java.util.concurrent.CancellationException
-import java.util.concurrent.atomic.AtomicInteger
+import odelay.Timer
 
-trait TimerSpec extends AsyncFunSpec with BeforeAndAfterAll {
+class TimerSpecJVM extends TimerSpec {
+  def newTimer = odelay.Timer.default
+  def timerName = "JVM Timer"
 
-  implicit def ec: ExecutionContext = scala.concurrent.ExecutionContext.Implicits.global
-
-  def newTimer: Timer
-  def timerName: String
-  implicit val timer = newTimer
-
-  describe (timerName) {
-    it ("should execute an operation after an initial delay") {
-      val start = System.currentTimeMillis
-      val fut = Delay(1.seconds) {
-        System.currentTimeMillis - start
-      }.future
-      fut.map(value => assert(value.millis.toSeconds === 1))
-    }
-
-    it ("should permit cancellation of delayed operations") {
-      val cancel = Delay(1.seconds)(sys.error("this should never print"))
-      Delay(150.millis) {
-        cancel.cancel()
-      }.future.map(_ => succeed)
-    }
-
-    it ("cancellation of delayed operations should result in future failure") {
-      val cancel = Delay(1.second)(sys.error("this should never print"))
-      val cancelF = Delay(150.millis) {
-        cancel.cancel()
-      }
-      for { 
-        cf <- cancelF.future
-        c <- cancel.future.failed
-      } yield {
-        assert(c.getClass === classOf[CancellationException])
-      }
-    }
-
-    it ("completion of delayed operations should result in a future success") {
-      val future = Delay(1.second)(true).future
-      future.map { value => assert(value === true)}
-    }
-
-    it ("should repeatedly execute an operation on a fixed delay") {
-      val start = System.currentTimeMillis
-      val delay = Delay.every(150.millis)() {
-        val diff = System.currentTimeMillis - start
-        print('.')
-        diff
-      }
-      delay.future.failed.foreach { _ => println() }
-      Delay(2.seconds) {
-        delay.cancel()
-      }.future.map(_ => succeed)
-    }
-
-    it ("cancellation of repeatedly delayed operations should result in future failure") {
-      val counter = new AtomicInteger(0)
-      val cancel = Delay.every(150.seconds)()(true)
-      val cancelFut = cancel.future.recoverWith {
-        case e: CancellationException =>
-          counter.incrementAndGet()
-          Future.successful(true)
-        case _ => Future.successful(true)
-      }
-      val fut = Delay(2.seconds) {
-        cancel.cancel()
-      }
-
-      cancelFut.map(_ => assert(counter.get() === 1))
-    }
-
-  }
-
-  override def afterAll() {
-    timer.stop()
-  }
 }
diff --git a/odelay-testing/shared/src/test/scala/ImplicitSpec.scala b/odelay-testing/shared/src/test/scala/ImplicitSpec.scala
new file mode 100644
index 0000000..cf44818
--- /dev/null
+++ b/odelay-testing/shared/src/test/scala/ImplicitSpec.scala
@@ -0,0 +1,23 @@
+package odelay.testing
+
+import odelay.{ Delay, Timer }
+import org.scalatest.{ BeforeAndAfterAll, FunSpec, Matchers }
+import scala.concurrent._
+import scala.concurrent.duration._
+import scala.util.control.NonFatal
+import java.util.concurrent.CancellationException
+import java.util.concurrent.atomic.AtomicInteger
+
+class ImplicitSpec extends FunSpec with Matchers with BeforeAndAfterAll {
+
+  implicit def ec: ExecutionContext = scala.concurrent.ExecutionContext.Implicits.global
+
+  describe("implicit test") {
+    it ("should find the implict") {
+      import Timer._
+      import scala.concurrent._
+      val result: Timer = implicitly[Timer]
+      result should not be (null)
+    }
+  }
+}
diff --git a/odelay-testing/shared/src/test/scala/TimerSpec.scala b/odelay-testing/shared/src/test/scala/TimerSpec.scala
new file mode 100644
index 0000000..189c371
--- /dev/null
+++ b/odelay-testing/shared/src/test/scala/TimerSpec.scala
@@ -0,0 +1,86 @@
+package odelay.testing
+
+import odelay.{ Delay, Timer }
+import org.scalatest.{ BeforeAndAfterAll, AsyncFunSpec, Matchers }
+import scala.concurrent._
+import scala.concurrent.duration._
+import scala.util.control.NonFatal
+import java.util.concurrent.CancellationException
+import java.util.concurrent.atomic.AtomicInteger
+
+abstract class TimerSpec extends AsyncFunSpec with Matchers with BeforeAndAfterAll {
+
+  implicit override def executionContext = scala.concurrent.ExecutionContext.Implicits.global
+
+  def newTimer: Timer
+  def timerName: String
+  implicit val timer = newTimer
+
+  describe (timerName) {
+    it ("should execute an operation after an initial delay") {
+      val start = System.currentTimeMillis
+      val fut = Delay(1.seconds) {
+        System.currentTimeMillis - start
+      }.future
+      fut.map(value => value.millis.toSeconds should equal(1.seconds.toSeconds +- 1.seconds.toSeconds))
+    }
+
+    it ("should permit cancellation of delayed operations") {
+      val cancel = Delay(1.seconds)(sys.error("this should never print"))
+      Delay(150.millis) {
+        cancel.cancel()
+      }.future.map(_ => succeed)
+    }
+
+    it ("cancellation of delayed operations should result in future failure") {
+      val cancel = Delay(1.second)(sys.error("this should never print"))
+      val cancelF = Delay(150.millis) {
+        cancel.cancel()
+      }
+      for { 
+        cf <- cancelF.future
+        c <- cancel.future.failed
+      } yield {
+        assert(c.getClass === classOf[CancellationException])
+      }
+    }
+
+    it ("completion of delayed operations should result in a future success") {
+      val future = Delay(1.second)(true).future
+      future.map { value => value should be (true) }
+    }
+
+    it ("should repeatedly execute an operation on a fixed delay") {
+      val start = System.currentTimeMillis
+      val delay = Delay.every(150.millis)() {
+        val diff = System.currentTimeMillis - start
+        print('.')
+        diff
+      }
+      delay.future.failed.foreach { _ => println() }
+      Delay(2.seconds) {
+        delay.cancel()
+      }.future.map(_ => succeed)
+    }
+
+    it ("cancellation of repeatedly delayed operations should result in future failure") {
+      val counter = new AtomicInteger(0)
+      val cancel = Delay.every(150.seconds)()(true)
+      val cancelFut = cancel.future.recoverWith {
+        case e: CancellationException =>
+          counter.incrementAndGet()
+          Future.successful(true)
+        case _ => Future.successful(true)
+      }
+      val fut = Delay(2.seconds) {
+        cancel.cancel()
+      }
+
+      cancelFut.map(_ => counter.get() should be (1))
+    }
+  }
+
+  override def afterAll() {
+    timer.stop()
+  }
+}