1 files changed, 53 insertions, 0 deletions
diff --git a/kotlinx-coroutines-core/js/test/SetTimeoutDispatcherTest.kt b/kotlinx-coroutines-core/js/test/SetTimeoutDispatcherTest.kt
new file mode 100644
index 00000000..78700776
--- /dev/null
+++ b/kotlinx-coroutines-core/js/test/SetTimeoutDispatcherTest.kt
@@ -0,0 +1,53 @@
+/*
+ * Copyright 2016-2019 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license.
+ */
+
+package kotlinx.coroutines
+
+import kotlin.test.*
+
+class SetTimeoutDispatcherTest : TestBase() {
+    @Test
+    fun testDispatch() = runTest {
+        launch(SetTimeoutDispatcher) {
+            expect(1)
+            launch {
+                expect(3)
+            }
+            expect(2)
+            yield()
+            expect(4)
+        }.join()
+        finish(5)
+    }
+
+    @Test
+    fun testDelay() = runTest {
+        withContext(SetTimeoutDispatcher) {
+            val job = launch(SetTimeoutDispatcher) {
+                expect(2)
+                delay(100)
+                expect(4)
+            }
+            expect(1)
+            yield() // Yield uses microtask, so should be in the same context
+            expect(3)
+            job.join()
+            finish(5)
+        }
+    }
+
+    @Test
+    fun testWithTimeout() = runTest {
+        withContext(SetTimeoutDispatcher) {
+            val result = withTimeoutOrNull(10) {
+                expect(1)
+                delay(100)
+                expectUnreached()
+                42
+            }
+            assertNull(result)
+            finish(2)
+        }
+    }
+}