mirror of
https://github.com/golang/go
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f2b5a07453
also: cmplx -> complex float64(1.0) -> 1.0 float64(1) -> 1.0 R=gri, r, gri1, r2 CC=golang-dev https://golang.org/cl/3991043
88 lines
1.2 KiB
Go
88 lines
1.2 KiB
Go
// $G $D/$F.go && $L $F.$A && ./$A.out
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// Copyright 2010 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Test of recover for run-time errors.
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// TODO(rsc):
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// null pointer accesses
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package main
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import (
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"os"
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"strings"
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)
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var x = make([]byte, 10)
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func main() {
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test1()
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test2()
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test3()
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test4()
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test5()
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test6()
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test7()
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}
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func mustRecover(s string) {
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v := recover()
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if v == nil {
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panic("expected panic")
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}
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if e := v.(os.Error).String(); strings.Index(e, s) < 0 {
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panic("want: " + s + "; have: " + e)
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}
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}
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func test1() {
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defer mustRecover("index")
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println(x[123])
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}
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func test2() {
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defer mustRecover("slice")
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println(x[5:15])
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}
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func test3() {
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defer mustRecover("slice")
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var lo = 11
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var hi = 9
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println(x[lo:hi])
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}
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func test4() {
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defer mustRecover("interface")
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var x interface{} = 1
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println(x.(float32))
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}
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type T struct {
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a, b int
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}
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func test5() {
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defer mustRecover("uncomparable")
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var x T
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var z interface{} = x
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println(z != z)
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}
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func test6() {
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defer mustRecover("unhashable")
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var x T
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var z interface{} = x
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m := make(map[interface{}]int)
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m[z] = 1
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}
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func test7() {
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defer mustRecover("divide by zero")
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var x, y int
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println(x / y)
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}
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