Fixed Channel.close hand on double close with pending send
diff --git a/kotlinx-coroutines-core/src/test/kotlin/kotlinx/coroutines/experimental/channels/LinkedListChannelTest.kt b/kotlinx-coroutines-core/src/test/kotlin/kotlinx/coroutines/experimental/channels/LinkedListChannelTest.kt
new file mode 100644
index 0000000..9b972e2
--- /dev/null
+++ b/kotlinx-coroutines-core/src/test/kotlin/kotlinx/coroutines/experimental/channels/LinkedListChannelTest.kt
@@ -0,0 +1,42 @@
+/*
+ * Copyright 2016-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package kotlinx.coroutines.experimental.channels
+
+import junit.framework.Assert.assertFalse
+import junit.framework.Assert.assertTrue
+import kotlinx.coroutines.experimental.TestBase
+import kotlinx.coroutines.experimental.runBlocking
+import org.hamcrest.MatcherAssert.assertThat
+import org.hamcrest.core.IsEqual
+import org.hamcrest.core.IsNull
+import org.junit.Test
+
+class LinkedListChannelTest : TestBase() {
+ @Test
+ fun testBasic() = runBlocking {
+ val c = LinkedListChannel<Int>()
+ c.send(1)
+ assertTrue(c.offer(2))
+ c.send(3)
+ assertTrue(c.close())
+ assertFalse(c.close())
+ assertThat(c.receive(), IsEqual(1))
+ assertThat(c.poll(), IsEqual(2))
+ assertThat(c.receiveOrNull(), IsEqual(3))
+ assertThat(c.receiveOrNull(), IsNull())
+ }
+}
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