JS backend: add ArrayList(Collection) into javautilCode.kt

js/js.libraries/src/core/javautilCode.kt

@@ -39,3 +39,11 @@ public fun LinkedHashMap<K, V>(m: Map<K, V>): LinkedHashMap<K, V> {
     map.putAll(m)
     return map
 }
+
+public fun ArrayList<E>(c: Collection<E>): ArrayList<E> {
+    val result = ArrayList<E>()
+    for (element in c) {
+        result.add(element)
+    }
+    return result
+}

libraries/stdlib/test/js/JsArrayTest.kt

@@ -2,6 +2,7 @@ package jstest
 
 import org.junit.Test as test
 import kotlin.test.*
+import java.util.ArrayList;
 
 class JsArrayTest {
 
@@ -19,4 +20,14 @@ class JsArrayTest {
         assertEquals("[foo, bar]", a3.toList().toString())
 
     }
+
+    test fun arrayListFromCollection() {
+        var c: Collection<String>  = array("A", "B", "C").toList()
+        var a = ArrayList(c)
+
+        assertEquals(3, a.size)
+        assertEquals("A", a[0])
+        assertEquals("B", a[1])
+        assertEquals("C", a[2])
+    }
 }