Commit 8658b36b authored by Russ Cox's avatar Russ Cox

test/alias.go: additional tests

R=ken2
CC=golang-dev
https://golang.org/cl/5327045
parent 0d8fb375
......@@ -9,11 +9,27 @@ package main
// Test that error messages say what the source file says
// (uint8 vs byte).
import (
"fmt"
"utf8"
)
func f(byte) {}
func g(uint8) {}
func main() {
var x int
var x float64
f(x) // ERROR "byte"
g(x) // ERROR "uint8"
// Test across imports.
var ff fmt.Formatter
var fs fmt.State
ff.Format(fs, x) // ERROR "rune"
utf8.RuneStart(x) // ERROR "byte"
var s utf8.String
s.At(x) // ERROR "int"
}
// $G $D/$F.go && $L $F.$A && ./$A.out
// Copyright 2011 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 main
// Test that dynamic interface checks treat byte=uint8
// and rune=int or rune=int32.
func main() {
var x interface{}
x = byte(1)
switch x.(type) {
case uint8:
// ok
default:
println("byte != uint8")
}
x = uint8(2)
switch x.(type) {
case byte:
// ok
default:
println("uint8 != byte")
}
rune32 := false
x = rune(3)
switch x.(type) {
case int:
// ok
case int32:
// must be new code
rune32 = true
default:
println("rune != int and rune != int32")
}
if rune32 {
x = int32(4)
} else {
x = int(5)
}
switch x.(type) {
case rune:
// ok
default:
println("int (or int32) != rune")
}
}
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment