mirror of
https://github.com/golang/go
synced 2024-09-06 00:19:45 +00:00
5451fff475
The tests in doc/progs appear to have been originally written for use with the old test driver. At some later point, they acquired their own test driver. Both ran tests in serial. This CL rewrites the current test driver in Go, runs tests concurrently, and cleans up historical artifacts from the old drivers. The primary motivation is to speed up all.bash. On my laptop, using tip, this CL reduces doc/progs test wall time from 26s to 7s. The savings will remain even when the compiler gets faster. Using Go 1.4, this CL reduces test wall time from 15s to 4s. Change-Id: Iae945a8490222beee76e8a2118a0d7956092f543 Reviewed-on: https://go-review.googlesource.com/8410 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org>
128 lines
2.3 KiB
Go
128 lines
2.3 KiB
Go
// 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.
|
|
|
|
// This file contains the code snippets included in "Error Handling and Go."
|
|
|
|
package main
|
|
|
|
import (
|
|
"encoding/json"
|
|
"errors"
|
|
"fmt"
|
|
"log"
|
|
"net"
|
|
"os"
|
|
"time"
|
|
)
|
|
|
|
type File struct{}
|
|
|
|
func Open(name string) (file *File, err error) {
|
|
// OMIT
|
|
panic(1)
|
|
// STOP OMIT
|
|
}
|
|
|
|
func openFile() { // OMIT
|
|
f, err := os.Open("filename.ext")
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
// do something with the open *File f
|
|
// STOP OMIT
|
|
_ = f
|
|
}
|
|
|
|
// errorString is a trivial implementation of error.
|
|
type errorString struct {
|
|
s string
|
|
}
|
|
|
|
func (e *errorString) Error() string {
|
|
return e.s
|
|
}
|
|
|
|
// STOP OMIT
|
|
|
|
// New returns an error that formats as the given text.
|
|
func New(text string) error {
|
|
return &errorString{text}
|
|
}
|
|
|
|
// STOP OMIT
|
|
|
|
func Sqrt(f float64) (float64, error) {
|
|
if f < 0 {
|
|
return 0, errors.New("math: square root of negative number")
|
|
}
|
|
// implementation
|
|
return 0, nil // OMIT
|
|
}
|
|
|
|
// STOP OMIT
|
|
|
|
func printErr() (int, error) { // OMIT
|
|
f, err := Sqrt(-1)
|
|
if err != nil {
|
|
fmt.Println(err)
|
|
}
|
|
// STOP OMIT
|
|
// fmtError OMIT
|
|
if f < 0 {
|
|
return 0, fmt.Errorf("math: square root of negative number %g", f)
|
|
}
|
|
// STOP OMIT
|
|
return 0, nil
|
|
}
|
|
|
|
type NegativeSqrtError float64
|
|
|
|
func (f NegativeSqrtError) Error() string {
|
|
return fmt.Sprintf("math: square root of negative number %g", float64(f))
|
|
}
|
|
|
|
// STOP OMIT
|
|
|
|
type SyntaxError struct {
|
|
msg string // description of error
|
|
Offset int64 // error occurred after reading Offset bytes
|
|
}
|
|
|
|
func (e *SyntaxError) Error() string { return e.msg }
|
|
|
|
// STOP OMIT
|
|
|
|
func decodeError(dec *json.Decoder, val struct{}) error { // OMIT
|
|
var f os.FileInfo // OMIT
|
|
if err := dec.Decode(&val); err != nil {
|
|
if serr, ok := err.(*json.SyntaxError); ok {
|
|
line, col := findLine(f, serr.Offset)
|
|
return fmt.Errorf("%s:%d:%d: %v", f.Name(), line, col, err)
|
|
}
|
|
return err
|
|
}
|
|
// STOP OMIT
|
|
return nil
|
|
}
|
|
|
|
func findLine(os.FileInfo, int64) (int, int) {
|
|
// place holder; no need to run
|
|
return 0, 0
|
|
}
|
|
|
|
func netError(err error) { // OMIT
|
|
for { // OMIT
|
|
if nerr, ok := err.(net.Error); ok && nerr.Temporary() {
|
|
time.Sleep(1e9)
|
|
continue
|
|
}
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
// STOP OMIT
|
|
}
|
|
}
|
|
|
|
func main() {}
|