[JS TESTS] Rewrite web demo tests using new test infrastructure

js/js.translator/testData/webDemoExamples/ranges2.kt

@@ -0,0 +1,35 @@
+// MAIN_ARGS: [10]
+
+fun main(args: Array<String>) {
+    val x = args[0].toInt()
+    //Check if a number lies within a range:
+    val y = 10
+    if (x in 1..y - 1)
+        println("OK")
+
+    //Iterate over a range:
+    for (a in 1..5)
+        print(" ${a}")
+
+    //Check if a number is out of range:
+    println()
+    val array = mutableListOf<String>()
+
+    array.add("aaa")
+    array.add("bbb")
+    array.add("ccc")
+
+    if (x !in 0..array.size)
+        println("Out: array has only ${array.size} elements. x = ${x}")
+
+    //Check if a collection contains an object:
+    if ("aaa" in array) // collection.contains(obj) is called
+        println("Yes: array contains aaa")
+
+    if ("ddd" in array) // collection.contains(obj) is called
+        println("Yes: array contains ddd")
+    else
+        println("No: array doesn't contains ddd")
+}
+
+