3 files changed, 65 insertions, 0 deletions
diff --git a/test/typeparam/issue51219b.dir/a.go b/test/typeparam/issue51219b.dir/a.go
new file mode 100644
index 0000000..1904940
--- /dev/null
+++ b/test/typeparam/issue51219b.dir/a.go
@@ -0,0 +1,37 @@
+// 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 a
+
+type Interaction[DataT InteractionDataConstraint] struct {
+}
+
+type InteractionDataConstraint interface {
+	[]byte |
+		UserCommandInteractionData
+}
+
+type UserCommandInteractionData struct {
+	resolvedInteractionWithOptions
+}
+
+type resolvedInteractionWithOptions struct {
+	Resolved Resolved `json:"resolved,omitempty"`
+}
+
+type Resolved struct {
+	Users ResolvedData[User] `json:"users,omitempty"`
+}
+
+type ResolvedData[T ResolvedDataConstraint] map[uint64]T
+
+type ResolvedDataConstraint interface {
+	User | Message
+}
+
+type User struct{}
+
+type Message struct {
+	Interaction *Interaction[[]byte] `json:"interaction,omitempty"`
+}
diff --git a/test/typeparam/issue51219b.dir/b.go b/test/typeparam/issue51219b.dir/b.go
new file mode 100644
index 0000000..8413d66
--- /dev/null
+++ b/test/typeparam/issue51219b.dir/b.go
@@ -0,0 +1,14 @@
+// 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 b
+
+import (
+	"./a"
+)
+
+// InteractionRequest is an incoming request Interaction
+type InteractionRequest[T a.InteractionDataConstraint] struct {
+	a.Interaction[T]
+}
diff --git a/test/typeparam/issue51219b.dir/p.go b/test/typeparam/issue51219b.dir/p.go
new file mode 100644
index 0000000..9f8b840
--- /dev/null
+++ b/test/typeparam/issue51219b.dir/p.go
@@ -0,0 +1,14 @@
+// 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 p
+
+import (
+	"./b"
+)
+
+// ResponseWriterMock mocks corde's ResponseWriter interface
+type ResponseWriterMock struct {
+	x b.InteractionRequest[[]byte]
+}