added more iterator based tests to the JS compilation; exposes some issue with enums...

libraries/stdlib/test/iterators/IteratorsJVMTest.kt

@@ -0,0 +1,28 @@
+package iterators
+
+import kotlin.test.assertEquals
+import org.junit.Test as test
+import kotlin.test.failsWith
+
+class IteratorsJVMTest {
+
+
+    test fun flatMapAndTakeExtractTheTransformedElements() {
+        fun intToBinaryDigits() = { (i: Int) ->
+            val binary = Integer.toBinaryString(i).sure()
+            var index = 0
+            iterate<Char> { if (index < binary.length()) binary.get(index++) else null }
+        }
+
+        val expected = arrayList(
+                      '0', // fibonacci(0) = 0
+                      '1', // fibonacci(1) = 1
+                      '1', // fibonacci(2) = 1
+                 '1', '0', // fibonacci(3) = 2
+                 '1', '1', // fibonacci(4) = 3
+            '1', '0', '1'  // fibonacci(5) = 5
+        )
+
+        assertEquals(expected, fibonacci().flatMap<Int, Char>(intToBinaryDigits()).take(10).toList())
+    }
+}