Generating stub methods for read-only collection.

2013-09-24 17:24:02 +04:00
parent 5de9c2499d
commit 511c908ba9
3 changed files with 54 additions and 7 deletions
@@ -0,0 +1,32 @@
+class MyCollection<T>: Collection<T> {
+    override fun size(): Int = 0
+    override fun isEmpty(): Boolean = true
+    override fun contains(o: Any?): Boolean = false
+    override fun iterator(): Iterator<T> = throw UnsupportedOperationException()
+    override fun toArray(): Array<Any?> = throw UnsupportedOperationException()
+    override fun <E> toArray(a: Array<out E>): Array<E> = throw UnsupportedOperationException()
+    override fun containsAll(c: Collection<Any?>): Boolean = false
+    override fun hashCode(): Int = 0
+    override fun equals(other: Any?): Boolean = false
+}
+
+fun expectUoe(block: () -> Any) {
+    try {
+        block()
+        throw AssertionError()
+    } catch (e: UnsupportedOperationException) {
+    }
+}
+
+fun box(): String {
+    val collection = MyCollection<String>() as MutableCollection<String>
+
+    expectUoe { collection.add("") }
+    expectUoe { collection.remove("") }
+    expectUoe { collection.addAll(collection) }
+    expectUoe { collection.removeAll(collection) }
+    expectUoe { collection.retainAll(collection) }
+    expectUoe { collection.clear() }
+
+    return "OK"
+}