Iterating over iterator.

js/js.translator/testFiles/expression/misc/cases/iterableExtension.kt

@@ -0,0 +1,22 @@
+package foo
+
+import java.util.*
+import java.lang.*
+import jet.Iterator
+
+public inline fun <T, C: Collection<in T>> Iterator<T>.takeWhileTo(result: C, predicate: (T) -> Boolean) : C {
+    for (element in this) if (predicate(element)) result.add(element) else break
+    return result
+}
+
+fun box(): Any? {
+    val c = ArrayList<Int>()
+    for (i in 0..5) {
+        c.add(i)
+    }
+
+    val d = ArrayList<Int>()
+
+    c.iterator().takeWhileTo(d, {i -> i < 4 })
+    return d.size() == 4
+}

js/js.translator/testFiles/expression/misc/cases/iterationOverIterator.kt

@@ -0,0 +1,18 @@
+package foo
+
+
+import java.util.*
+
+fun box(): Boolean {
+    val c = ArrayList<Int>()
+    for (i in 0..5) {
+        c.add(i)
+    }
+
+    var s = ""
+    for (i in c.iterator()) {
+        s = s + i.toString()
+    }
+
+    return s == "012345"
+}