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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 13:14:23 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 13:14:23 +0000 |
commit | 73df946d56c74384511a194dd01dbe099584fd1a (patch) | |
tree | fd0bcea490dd81327ddfbb31e215439672c9a068 /test/interface/receiver.go | |
parent | Initial commit. (diff) | |
download | golang-1.16-73df946d56c74384511a194dd01dbe099584fd1a.tar.xz golang-1.16-73df946d56c74384511a194dd01dbe099584fd1a.zip |
Adding upstream version 1.16.10.upstream/1.16.10upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'test/interface/receiver.go')
-rw-r--r-- | test/interface/receiver.go | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/test/interface/receiver.go b/test/interface/receiver.go new file mode 100644 index 0000000..4511ab3 --- /dev/null +++ b/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") + } +} |