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// Copyright 2015 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.
// run runs the docs tests found in this directory.
package main
import (
"bytes"
"flag"
"fmt"
"io/ioutil"
"os"
"os/exec"
"path/filepath"
"regexp"
"runtime"
"strings"
"time"
)
const usage = `go run run.go [tests]
run.go runs the docs tests in this directory.
If no tests are provided, it runs all tests.
Tests may be specified without their .go suffix.
`
func main() {
start := time.Now()
flag.Usage = func() {
fmt.Fprintf(os.Stderr, usage)
flag.PrintDefaults()
os.Exit(2)
}
flag.Parse()
if flag.NArg() == 0 {
// run all tests
fixcgo()
} else {
// run specified tests
onlyTest(flag.Args()...)
}
tmpdir, err := ioutil.TempDir("", "go-progs")
if err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
// ratec limits the number of tests running concurrently.
// None of the tests are intensive, so don't bother
// trying to manually adjust for slow builders.
ratec := make(chan bool, runtime.NumCPU())
errc := make(chan error, len(tests))
for _, tt := range tests {
tt := tt
ratec <- true
go func() {
errc <- test(tmpdir, tt.file, tt.want)
<-ratec
}()
}
var rc int
for range tests {
if err := <-errc; err != nil {
fmt.Fprintln(os.Stderr, err)
rc = 1
}
}
os.Remove(tmpdir)
if rc == 0 {
fmt.Printf("ok\t%s\t%s\n", filepath.Base(os.Args[0]), time.Since(start).Round(time.Millisecond))
}
os.Exit(rc)
}
// test builds the test in the given file.
// If want is non-empty, test also runs the test
// and checks that the output matches the regexp want.
func test(tmpdir, file, want string) error {
// Build the program.
prog := filepath.Join(tmpdir, file+".exe")
cmd := exec.Command("go", "build", "-o", prog, file+".go")
out, err := cmd.CombinedOutput()
if err != nil {
return fmt.Errorf("go build %s.go failed: %v\nOutput:\n%s", file, err, out)
}
defer os.Remove(prog)
// Only run the test if we have output to check.
if want == "" {
return nil
}
cmd = exec.Command(prog)
out, err = cmd.CombinedOutput()
if err != nil {
return fmt.Errorf("%s failed: %v\nOutput:\n%s", file, err, out)
}
// Canonicalize output.
out = bytes.TrimRight(out, "\n")
out = bytes.ReplaceAll(out, []byte{'\n'}, []byte{' '})
// Check the result.
match, err := regexp.Match(want, out)
if err != nil {
return fmt.Errorf("failed to parse regexp %q: %v", want, err)
}
if !match {
return fmt.Errorf("%s.go:\n%q\ndoes not match %s", file, out, want)
}
return nil
}
type testcase struct {
file string
want string
}
var tests = []testcase{
// defer_panic_recover
{"defer", `^0 3210 2$`},
{"defer2", `^Calling g. Printing in g 0 Printing in g 1 Printing in g 2 Printing in g 3 Panicking! Defer in g 3 Defer in g 2 Defer in g 1 Defer in g 0 Recovered in f 4 Returned normally from f.$`},
// effective_go
{"eff_bytesize", `^1.00YB 9.09TB$`},
{"eff_qr", ""},
{"eff_sequence", `^\[-1 2 6 16 44\]$`},
{"eff_unused2", ""},
// error_handling
{"error", ""},
{"error2", ""},
{"error3", ""},
{"error4", ""},
// law_of_reflection
{"interface", ""},
{"interface2", `^type: float64$`},
// c_go_cgo
{"cgo1", ""},
{"cgo2", ""},
{"cgo3", ""},
{"cgo4", ""},
// timeout
{"timeout1", ""},
{"timeout2", ""},
// gobs
{"gobs1", ""},
{"gobs2", ""},
// json
{"json1", `^$`},
{"json2", `the reciprocal of i is`},
{"json3", `Age is int 6`},
{"json4", `^$`},
{"json5", ""},
// image_package
{"image_package1", `^X is 2 Y is 1$`},
{"image_package2", `^3 4 false$`},
{"image_package3", `^3 4 true$`},
{"image_package4", `^image.Point{X:2, Y:1}$`},
{"image_package5", `^{255 0 0 255}$`},
{"image_package6", `^8 4 true$`},
// other
{"go1", `^Christmas is a holiday: true .*go1.go already exists$`},
{"slices", ""},
}
func onlyTest(files ...string) {
var new []testcase
NextFile:
for _, file := range files {
file = strings.TrimSuffix(file, ".go")
for _, tt := range tests {
if tt.file == file {
new = append(new, tt)
continue NextFile
}
}
fmt.Fprintf(os.Stderr, "test %s.go not found\n", file)
os.Exit(1)
}
tests = new
}
func skipTest(file string) {
for i, tt := range tests {
if tt.file == file {
copy(tests[i:], tests[i+1:])
tests = tests[:len(tests)-1]
return
}
}
panic("delete(" + file + "): not found")
}
func fixcgo() {
if os.Getenv("CGO_ENABLED") != "1" {
skipTest("cgo1")
skipTest("cgo2")
skipTest("cgo3")
skipTest("cgo4")
return
}
switch runtime.GOOS {
case "freebsd":
// cgo1 and cgo2 don't run on freebsd, srandom has a different signature
skipTest("cgo1")
skipTest("cgo2")
case "netbsd":
// cgo1 and cgo2 don't run on netbsd, srandom has a different signature
skipTest("cgo1")
skipTest("cgo2")
}
}
|
