Skip JavaFxTest in headless environment

Author: elizarov

ui/kotlinx-coroutines-javafx/src/main/kotlin/kotlinx/coroutines/experimental/javafx/JavaFx.kt

@@ -30,14 +30,13 @@ import java.util.concurrent.CopyOnWriteArrayList
 import java.util.concurrent.TimeUnit
 import kotlin.coroutines.experimental.CoroutineContext
 
-
 /**
  * Dispatches execution onto JavaFx application thread and provides native [delay] support.
  */
 object JavaFx : CoroutineDispatcher(), Delay {
     init {
         // :kludge: to make sure Toolkit is initialized if we use JavaFx dispatcher outside of JavaFx app
-        PlatformImpl.startup {}
+        initPlatform()
     }
 
     private val pulseTimer by lazy {
@@ -93,3 +92,7 @@ object JavaFx : CoroutineDispatcher(), Delay {
 
     override fun toString() = "JavaFx"
 }
+
+internal fun initPlatform() {
+    PlatformImpl.startup {}
+}

ui/kotlinx-coroutines-javafx/src/test/kotlin/kotlinx/coroutines/experimental/javafx/JavaFxTest.kt

@@ -32,16 +32,25 @@ class JavaFxTest : TestBase() {
     }
 
     @Test
-    fun testDelay() = runBlocking {
-        expect(1)
-        val job = launch(JavaFx) {
-            check(Platform.isFxApplicationThread())
-            expect(2)
-            delay(100)
-            check(Platform.isFxApplicationThread())
-            expect(3)
+    fun testDelay() {
+        try {
+            initPlatform()
+        } catch (e: UnsupportedOperationException) {
+            println("Skipping JavaFxTest in headless environment")
+            return // ignore test in headless environments
+        }
+
+        runBlocking {
+            expect(1)
+            val job = launch(JavaFx) {
+                check(Platform.isFxApplicationThread())
+                expect(2)
+                delay(100)
+                check(Platform.isFxApplicationThread())
+                expect(3)
+            }
+            job.join()
+            finish(4)
         }
-        job.join()
-        finish(4)
     }
 }