Initial commit: Go 1.23 release state

test/interface/receiver.go

@@ -0,0 +1,121 @@
+// run
+
+// Copyright 2009 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.
+
+// Test Implicit methods for embedded types and
+// mixed pointer and non-pointer receivers.
+
+package main
+
+type T int
+
+var nv, np int
+
+func (t T) V() {
+	if t != 42 {
+		panic(t)
+	}
+	nv++
+}
+
+func (t *T) P() {
+	if *t != 42 {
+		println(t, *t)
+		panic("fail")
+	}
+	np++
+}
+
+type V interface {
+	V()
+}
+type P interface {
+	P()
+	V()
+}
+
+type S struct {
+	T
+}
+
+type SP struct {
+	*T
+}
+
+func main() {
+	var t T
+	var v V
+	var p P
+
+	t = 42
+
+	t.P()
+	t.V()
+
+	v = t
+	v.V()
+
+	p = &t
+	p.P()
+	p.V()
+
+	v = &t
+	v.V()
+
+	//	p = t	// ERROR
+	var i interface{} = t
+	if _, ok := i.(P); ok {
+		println("dynamic i.(P) succeeded incorrectly")
+		panic("fail")
+	}
+
+	//	println("--struct--");
+	var s S
+	s.T = 42
+	s.P()
+	s.V()
+
+	v = s
+	s.V()
+
+	p = &s
+	p.P()
+	p.V()
+
+	v = &s
+	v.V()
+
+	//	p = s	// ERROR
+	var j interface{} = s
+	if _, ok := j.(P); ok {
+		println("dynamic j.(P) succeeded incorrectly")
+		panic("fail")
+	}
+
+	//	println("--struct pointer--");
+	var sp SP
+	sp.T = &t
+	sp.P()
+	sp.V()
+
+	v = sp
+	sp.V()
+
+	p = &sp
+	p.P()
+	p.V()
+
+	v = &sp
+	v.V()
+
+	p = sp // not error
+	p.P()
+	p.V()
+
+	if nv != 13 || np != 7 {
+		println("bad count", nv, np)
+		panic("fail")
+	}
+}