Use @deprecated as a poor-man's @compileTimeOnly

 This helps detect naked awaits.

1 files changed, 19 insertions, 0 deletions

diff --git a/src/test/scala/scala/async/neg/NakedAwait.scala b/src/test/scala/scala/async/neg/NakedAwait.scala
new file mode 100644
index 0000000..db67f18
--- /dev/null
+++ b/src/test/scala/scala/async/neg/NakedAwait.scala
@@ -0,0 +1,19 @@
+package scala.async
+package neg
+
+import org.junit.runner.RunWith
+import org.junit.runners.JUnit4
+import org.junit.Test
+
+@RunWith(classOf[JUnit4])
+class NakedAwait {
+  @Test
+  def `await only allowed in async neg`() {
+    expectError("`await` must be enclosed in an `async` block", "-deprecation -Xfatal-warnings") {
+      """
+        | import _root_.scala.async.Async._
+        | await[Any](null)
+      """.stripMargin
+    }
+  }
+}