Unrelated tests

I piggyback these here to not go through the ceremony of another PR

Author: odersky

tests/pos/fewer-braces.scala

@@ -1,5 +1,13 @@
 import language.experimental.fewerBraces
 
-object Test:
+def Test =
+
+  val xo: Option[Int] = Some(1)
+
+  val y =
+    xo.fold:
+      22
+    .apply: x =>
+      x + 1
+  println(y)
 
-  assert((new Object: Any).isInstanceOf[Object])

tests/run/patmat.check

@@ -0,0 +1,4 @@
+Bob is 22 years old and lives in Paris
+Hello Peter
+Bob is 22 years old and lives in Paris
+Hello PersonExtractor(Peter)

tests/run/patmat.scala

@@ -0,0 +1,45 @@
+object Test1:
+  class User(val name: String, val age: Int, val city: String)
+  object User:
+    def unapply(user: User) = UserExtractor(user.name, user.age, user.city)
+
+  case class UserExtractor(name: String, age: Int, city: String)
+
+  class Person(val name: String)
+  object Person:
+    def unapply(person: Person) = PersonExtractor(person.name)
+
+  case class PersonExtractor(name: String)
+
+  def test =
+    val user = User("Bob", 22, "Paris")
+    (user: Any) match
+      case User(name, age, city) => println(s"$name is $age years old and lives in $city")
+    val p = Person("Peter")
+    (p: Any) match
+      case Person(n) => println(s"Hello $n")
+
+object Test2:
+  class User(val name: String, val age: Int, val city: String)
+  object User:
+    def unapply(user: User): Option[UserExtractor] = Some(UserExtractor(user.name, user.age, user.city))
+
+  case class UserExtractor(name: String, age: Int, city: String)
+
+  class Person(val name: String)
+  object Person:
+    def unapply(person: Person): Some[PersonExtractor] = Some(PersonExtractor(person.name))
+
+  case class PersonExtractor(name: String)
+
+  def test =
+    val user = User("Bob", 22, "Paris")
+    (user: Any) match
+      case User(name, age, city) => println(s"$name is $age years old and lives in $city")
+    val p = Person("Peter")
+    (p: Any) match
+      case Person(n) => println(s"Hello $n")
+
+@main def Test =
+  Test1.test
+  Test2.test