diff options
author | Russ Cox <rsc@golang.org> | 2011-10-26 15:27:47 -0700 |
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committer | Russ Cox <rsc@golang.org> | 2011-10-26 15:27:47 -0700 |
commit | 063c3ab8b5ce105cc8050133deab35407f002b0a (patch) | |
tree | 343a1173d9f34de6d1acbe1c805870afae0efbd1 | |
parent | 7703be2354bc1c4eb2c30552e3cbc2a6d1a08847 (diff) | |
download | go-063c3ab8b5ce105cc8050133deab35407f002b0a.tar.gz |
test/alias.go: additional tests
R=ken2
CC=golang-dev
http://codereview.appspot.com/5327045
-rw-r--r-- | test/alias.go | 18 | ||||
-rw-r--r-- | test/alias1.go | 54 |
2 files changed, 71 insertions, 1 deletions
diff --git a/test/alias.go b/test/alias.go index 6039b3183..199c782d0 100644 --- a/test/alias.go +++ b/test/alias.go @@ -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" } diff --git a/test/alias1.go b/test/alias1.go new file mode 100644 index 000000000..e8ef8a23f --- /dev/null +++ b/test/alias1.go @@ -0,0 +1,54 @@ +// $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") + } +} |