KT-4844 Support asReversed() for lists

libraries/stdlib/test/collections/ReversedViewsJVMTest.kt

@@ -0,0 +1,42 @@
+/*
+ * Copyright 2010-2015 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package collections
+
+import kotlin.asReversed
+import kotlin.test.assertEquals
+import org.junit.Test as test
+
+/**
+ * We need this test to run only on JVM because we have no mutability support by sub-list implementation for JavaScript
+ */
+class ReversedViewsJVMTest {
+
+    test fun testMutableSubList() {
+        val original = arrayListOf(1, 2, 3, 4)
+        val reversedSubList = original.asReversed().subList(1, 3)
+
+        assertEquals(listOf(3, 2), reversedSubList)
+        reversedSubList.clear()
+        assertEquals(emptyList<Int>(), reversedSubList)
+        assertEquals(listOf(1, 4), original)
+
+        reversedSubList.add(100)
+        assertEquals(listOf(100), reversedSubList)
+        assertEquals(listOf(1, 100, 4), original)
+    }
+
+}