Wrapper for suspend fun main and @Test suspend fun testXXX functions.

libraries/stdlib/coroutines/jvm/src/kotlin/coroutines/jvm/internal/RunSuspend.kt

@@ -0,0 +1,45 @@
+/*
+ * Copyright 2010-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the license/LICENSE.txt file.
+ */
+
+package kotlin.coroutines.jvm.internal
+
+import kotlin.coroutines.Continuation
+import kotlin.coroutines.CoroutineContext
+import kotlin.coroutines.EmptyCoroutineContext
+import kotlin.coroutines.startCoroutine
+
+/**
+ * Wrapper for `suspend fun main` and `@Test suspend fun testXXX` functions. 
+ */
+@SinceKotlin("1.3")
+internal fun runSuspend(block: suspend () -> Unit) {
+    val run = RunSuspend()
+    block.startCoroutine(run)
+    run.await()
+}
+
+private class RunSuspend : Continuation<Unit> {
+    override val context: CoroutineContext
+        get() = EmptyCoroutineContext
+
+    var result: SuccessOrFailure<Unit>? = null
+
+    override fun resumeWith(result: SuccessOrFailure<Unit>) = synchronized(this) {
+        this.result = result
+        (this as Object).notifyAll()
+    }
+
+    fun await() = synchronized(this) {
+        while (true) {
+            when (val result = this.result) {
+                null -> (this as Object).wait()
+                else -> {
+                    result.getOrThrow() // throw up failure
+                    return
+                }
+            }
+        }
+    }
+}