Minor. Add more tests

compiler/testData/codegen/box/inlineClasses/inlineClassImplementsCollectionGeneric.kt

@@ -0,0 +1,34 @@
+// WITH_STDLIB
+// TARGET_BACKEND: JVM
+// WORKS_WHEN_VALUE_CLASS
+// LANGUAGE: +ValueClasses, +GenericInlineClassParameter
+
+OPTIONAL_JVM_INLINE_ANNOTATION
+value class MyUInt<T: Int>(val x: T)
+
+OPTIONAL_JVM_INLINE_ANNOTATION
+value class MyUIntArray<T: Int>(private val storage: IntArray) : Collection<MyUInt<T>> {
+    public override val size: Int get() = storage.size
+
+    override operator fun iterator() = TODO()
+    override fun contains(element: MyUInt<T>): Boolean = storage.contains(element.x)
+    override fun containsAll(elements: Collection<MyUInt<T>>): Boolean = elements.all { storage.contains(it.x) }
+    override fun isEmpty(): Boolean = TODO()
+}
+
+fun <T> checkBoxed(c: Collection<T>, element: T): Boolean {
+    return c.contains(element) && c.containsAll(listOf(element))
+}
+
+fun box(): String {
+    val uints = MyUIntArray<Int>(intArrayOf(0, 1, 42))
+
+    if (MyUInt(42) !in uints) return "Fail 1"
+
+    val ints = listOf(MyUInt(1), MyUInt(0))
+    if (!uints.containsAll(ints)) return "Fail 2"
+
+    if (!checkBoxed(uints, MyUInt(0))) return "Fail 3"
+
+    return "OK"
+}