JS: move more test to box tests

js/js.translator/testData/box/objectDeclaration/dontPolluteObject.kt

@@ -0,0 +1,45 @@
+package foo
+
+object EmptyObject {}
+
+object SomeObject {
+    val foo = 1
+    var bar = "t"
+    fun baz() {}
+}
+
+val emptyObjectExpr = object {}
+
+val someObjectExpr = object {
+    val foo = 1
+    var bar = "t"
+    fun baz() {}
+}
+
+val o = js("Object")
+
+fun keys(a: Any): List<String> {
+    val arr: Array<String> = o.keys(a)
+    return arr.toList()
+}
+
+fun getOwnPropertyNames(a: Any): List<String> {
+    val arr: Array<String> = o.getOwnPropertyNames(a)
+    return arr.toList()
+}
+
+fun box(): String {
+    assertEquals(listOf(), getOwnPropertyNames(EmptyObject))
+    assertEquals(listOf(), keys(EmptyObject))
+
+    assertEquals(listOf("foo", "bar"), getOwnPropertyNames(SomeObject))
+    assertEquals(listOf("foo", "bar"), keys(SomeObject))
+
+    assertEquals(listOf(), getOwnPropertyNames(emptyObjectExpr))
+    assertEquals(listOf(), keys(emptyObjectExpr))
+
+    assertEquals(listOf("foo", "bar"), getOwnPropertyNames(someObjectExpr))
+    assertEquals(listOf("foo", "bar"), keys(someObjectExpr))
+
+    return "OK"
+}