1 files changed, 86 insertions, 0 deletions
diff --git a/test/typeparam/issue50561.dir/diameter.go b/test/typeparam/issue50561.dir/diameter.go
new file mode 100644
index 0000000..2bfe924
--- /dev/null
+++ b/test/typeparam/issue50561.dir/diameter.go
@@ -0,0 +1,86 @@
+// Copyright 2022 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package diameter
+
+type Runnable interface {
+	Run()
+}
+
+// RunnableFunc is converter which converts function to Runnable interface
+type RunnableFunc func()
+
+// Run is Runnable.Run
+func (r RunnableFunc) Run() {
+	r()
+}
+
+type Executor interface {
+	ExecuteUnsafe(runnable Runnable)
+}
+
+type Promise[T any] interface {
+	Future() Future[T]
+	Success(value T) bool
+	Failure(err error) bool
+	IsCompleted() bool
+	Complete(result Try[T]) bool
+}
+
+type Future[T any] interface {
+	OnFailure(cb func(err error), ctx ...Executor)
+	OnSuccess(cb func(success T), ctx ...Executor)
+	Foreach(f func(v T), ctx ...Executor)
+	OnComplete(cb func(try Try[T]), ctx ...Executor)
+	IsCompleted() bool
+	//	Value() Option[Try[T]]
+	Failed() Future[error]
+	Recover(f func(err error) T, ctx ...Executor) Future[T]
+	RecoverWith(f func(err error) Future[T], ctx ...Executor) Future[T]
+}
+
+type Try[T any] struct {
+	v   *T
+	err error
+}
+
+func (r Try[T]) IsSuccess() bool {
+	return r.v != nil
+}
+
+type ByteBuffer struct {
+	pos       int
+	buf       []byte
+	underflow error
+}
+
+// InboundHandler is extends of uclient.NetInboundHandler
+type InboundHandler interface {
+	OriginHost() string
+	OriginRealm() string
+}
+
+type transactionID struct {
+	hopID uint32
+	endID uint32
+}
+
+type roundTripper struct {
+	promise map[transactionID]Promise[*ByteBuffer]
+	host    string
+	realm   string
+}
+
+func (r *roundTripper) OriginHost() string {
+	return r.host
+}
+func (r *roundTripper) OriginRealm() string {
+	return r.realm
+}
+
+func NewInboundHandler(host string, realm string, productName string) InboundHandler {
+	ret := &roundTripper{promise: make(map[transactionID]Promise[*ByteBuffer]), host: host, realm: realm}
+
+	return ret
+}