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go/test/fixedbugs/issue8606.go
Keith Randall f72d7cfc8f cmd/compile: add interface equality tests
Add interfaces which differ in type. Those used so far only
differ in value, not type.

These additional tests are needed to generate a failure
before CL 236278 went in.

Update #8606

Change-Id: Icdb7647b1973c2fff7e5afe2bd8b8c1b384f583e
Reviewed-on: https://go-review.googlesource.com/c/go/+/236418
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2020-06-04 06:21:55 +00:00

51 lines
1.1 KiB
Go

// run
// Copyright 2020 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.
// Check to make sure that we compare fields in order. See issue 8606.
package main
import "fmt"
func main() {
type A [2]interface{}
type S struct{ x, y interface{} }
for _, test := range []struct {
panic bool
a, b interface{}
}{
{false, A{1, []byte{1}}, A{2, []byte{1}}},
{true, A{[]byte{1}, 1}, A{[]byte{1}, 2}},
{false, S{1, []byte{1}}, S{2, []byte{1}}},
{true, S{[]byte{1}, 1}, S{[]byte{1}, 2}},
{false, A{1, []byte{1}}, A{"2", []byte{1}}},
{true, A{[]byte{1}, 1}, A{[]byte{1}, "2"}},
{false, S{1, []byte{1}}, S{"2", []byte{1}}},
{true, S{[]byte{1}, 1}, S{[]byte{1}, "2"}},
} {
f := func() {
if test.a == test.b {
panic(fmt.Sprintf("values %#v and %#v should not be equal", test.a, test.b))
}
}
if test.panic {
shouldPanic(fmt.Sprintf("comparing %#v and %#v did not panic", test.a, test.b), f)
} else {
f() // should not panic
}
}
}
func shouldPanic(name string, f func()) {
defer func() {
if recover() == nil {
panic(name)
}
}()
f()
}