Randomize port for AsyncIOTest

Author: elizarov

kotlinx-coroutines-nio/src/test/kotlin/kotlinx/coroutines/experimental/nio/AsyncIOTest.kt

@@ -11,10 +11,13 @@ import java.nio.channels.AsynchronousFileChannel
 import java.nio.channels.AsynchronousServerSocketChannel
 import java.nio.channels.AsynchronousSocketChannel
 import java.nio.file.StandardOpenOption
+import java.util.*
 import kotlin.test.assertEquals
 import kotlin.test.assertTrue
 
 class AsyncIOTest {
+    val PORT = Random().nextInt(10000) + 10000 // randomize port for this test
+
     @Rule
     @JvmField
     val tmpDir = TemporaryFolder()
@@ -63,7 +66,7 @@ class AsyncIOTest {
         val serverChannel =
                 AsynchronousServerSocketChannel
                         .open()
-                        .bind(InetSocketAddress(8080))
+                        .bind(InetSocketAddress(PORT))
 
         val c1 = launch(CommonPool) {
             val client = serverChannel.aAccept()
@@ -80,7 +83,7 @@ class AsyncIOTest {
             val connection =
                     AsynchronousSocketChannel.open()
             // async calls
-            connection.aConnect(InetSocketAddress("127.0.0.1", 8080))
+            connection.aConnect(InetSocketAddress("127.0.0.1", PORT))
             connection.aWrite(Charsets.UTF_8.encode("OK"))
 
             val buffer = ByteBuffer.allocate(3)