Remove dependency on kotlin.test
diff --git a/kotlinx-coroutines-core/src/test/kotlin/kotlinx/coroutines/experimental/channels/ArrayChannelTest.kt b/kotlinx-coroutines-core/src/test/kotlin/kotlinx/coroutines/experimental/channels/ArrayChannelTest.kt
index 2f837e5..10e4b04 100644
--- a/kotlinx-coroutines-core/src/test/kotlin/kotlinx/coroutines/experimental/channels/ArrayChannelTest.kt
+++ b/kotlinx-coroutines-core/src/test/kotlin/kotlinx/coroutines/experimental/channels/ArrayChannelTest.kt
@@ -2,9 +2,7 @@
 
 import kotlinx.coroutines.experimental.*
 import org.junit.Test
-import kotlin.test.assertEquals
-import kotlin.test.assertFalse
-import kotlin.test.assertTrue
+import org.junit.Assert.*
 
 class ArrayChannelTest : TestBase() {
     @Test
diff --git a/kotlinx-coroutines-core/src/test/kotlin/kotlinx/coroutines/experimental/channels/ChannelAtomicCancelStressTest.kt b/kotlinx-coroutines-core/src/test/kotlin/kotlinx/coroutines/experimental/channels/ChannelAtomicCancelStressTest.kt
index a395ce4..47b4da3 100644
--- a/kotlinx-coroutines-core/src/test/kotlin/kotlinx/coroutines/experimental/channels/ChannelAtomicCancelStressTest.kt
+++ b/kotlinx-coroutines-core/src/test/kotlin/kotlinx/coroutines/experimental/channels/ChannelAtomicCancelStressTest.kt
@@ -5,7 +5,7 @@
 import org.junit.runner.RunWith
 import org.junit.runners.Parameterized
 import java.util.*
-import kotlin.test.assertEquals
+import org.junit.Assert.*
 
 @RunWith(Parameterized::class)
 class ChannelAtomicCancelStressTest(val kind: TestChannelKind) {
diff --git a/kotlinx-coroutines-core/src/test/kotlin/kotlinx/coroutines/experimental/channels/ChannelSendReceiveStressTest.kt b/kotlinx-coroutines-core/src/test/kotlin/kotlinx/coroutines/experimental/channels/ChannelSendReceiveStressTest.kt
index 32a33ca..2f58efe 100644
--- a/kotlinx-coroutines-core/src/test/kotlin/kotlinx/coroutines/experimental/channels/ChannelSendReceiveStressTest.kt
+++ b/kotlinx-coroutines-core/src/test/kotlin/kotlinx/coroutines/experimental/channels/ChannelSendReceiveStressTest.kt
@@ -6,9 +6,7 @@
 import org.junit.runners.Parameterized
 import java.util.concurrent.ConcurrentHashMap
 import java.util.concurrent.atomic.AtomicInteger
-import kotlin.test.assertEquals
-import kotlin.test.assertTrue
-
+import org.junit.Assert.*
 
 @RunWith(Parameterized::class)
 class ChannelSendReceiveStressTest(
@@ -72,7 +70,7 @@
         assertEquals(0, dupes.get())
         assertEquals(nEvents, received.size)
         repeat(nReceivers) { receiveIndex ->
-            assertTrue(receivedBy[receiveIndex] > 0, "Each receiver should have received something")
+            assertTrue("Each receiver should have received something", receivedBy[receiveIndex] > 0)
         }
     }
 
diff --git a/kotlinx-coroutines-core/src/test/kotlin/kotlinx/coroutines/experimental/channels/RendezvousChannelTest.kt b/kotlinx-coroutines-core/src/test/kotlin/kotlinx/coroutines/experimental/channels/RendezvousChannelTest.kt
index a0ef4d1..777e4a3 100644
--- a/kotlinx-coroutines-core/src/test/kotlin/kotlinx/coroutines/experimental/channels/RendezvousChannelTest.kt
+++ b/kotlinx-coroutines-core/src/test/kotlin/kotlinx/coroutines/experimental/channels/RendezvousChannelTest.kt
@@ -2,9 +2,7 @@
 
 import kotlinx.coroutines.experimental.*
 import org.junit.Test
-import kotlin.test.assertEquals
-import kotlin.test.assertFalse
-import kotlin.test.assertTrue
+import org.junit.Assert.*
 
 class RendezvousChannelTest : TestBase() {
     @Test
diff --git a/kotlinx-coroutines-core/src/test/kotlin/kotlinx/coroutines/experimental/channels/SimpleSendReceiveTest.kt b/kotlinx-coroutines-core/src/test/kotlin/kotlinx/coroutines/experimental/channels/SimpleSendReceiveTest.kt
index 1464151..f46136d 100644
--- a/kotlinx-coroutines-core/src/test/kotlin/kotlinx/coroutines/experimental/channels/SimpleSendReceiveTest.kt
+++ b/kotlinx-coroutines-core/src/test/kotlin/kotlinx/coroutines/experimental/channels/SimpleSendReceiveTest.kt
@@ -6,7 +6,7 @@
 import org.junit.Test
 import org.junit.runner.RunWith
 import org.junit.runners.Parameterized
-import kotlin.test.assertEquals
+import org.junit.Assert.*
 
 @RunWith(Parameterized::class)
 class SimpleSendReceiveTest(