JS: move more test to box tests

js/js.translator/testData/box/number/longArray.kt

@@ -0,0 +1,22 @@
+package foo
+
+fun box(): String {
+
+    val arr = LongArray(2)
+
+    val expected: Long = 0
+    assertEquals(arr.size, 2)
+    assertEquals(expected, arr[0])
+    assertEquals(expected, arr[1])
+
+    arr[0] = 2432902008176640000L
+    assertEquals(2432902008176640000L, arr[0])
+
+    val arr1 = longArrayOf(1,2,3, 2432902008176640000L)
+    assertEquals(1L, arr1[0])
+    assertEquals(2L, arr1[1])
+    assertEquals(3L, arr1[2])
+    assertEquals(2432902008176640000L, arr1[3])
+
+    return "OK"
+}