mirror of
https://github.com/golang/go
synced 2024-11-26 22:51:23 -07:00
2d56dee61b
This should probably be considered "experimental" at this stage, but what it needs is feedback from adventurous adopters. I think the data structure used for describing escape reasons might be extendable to allow a cleanup of the underlying algorithms, which suffers from insufficiently separated concerns (the graph does not deal well with escape level adjustments, so it is augmented by a second custom-walk portion of the "flood" phase. It would be better to put it all, including level adjustments, in a single graph structure, and then simply flood the graph. Tweaked to avoid allocations in the no-logging case. Modified run.go to ignore lines with leading "#" in the output (since it can never match a line), and in -update_errors to ignore leading tabs in output lines and to normalize embedded filenames. Currently requires -m -m because otherwise the noise/update burden for the other escape tests is considerable. There is a partial test. Existing escape analysis tests seem to cover all except the panic case and what looks like it might be unreachable code in escape analysis. Fixes #10526. Change-Id: I2524fdec54facae48b00b2548e25d9e46fcaf832 Reviewed-on: https://go-review.googlesource.com/18041 Run-TryBot: David Chase <drchase@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
1109 lines
26 KiB
Go
1109 lines
26 KiB
Go
// skip
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// Copyright 2012 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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// Run runs tests in the test directory.
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//
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// TODO(bradfitz): docs of some sort, once we figure out how we're changing
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// headers of files
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package main
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import (
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"bytes"
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"errors"
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"flag"
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"fmt"
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"hash/fnv"
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"io"
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"io/ioutil"
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"log"
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"os"
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"os/exec"
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"path"
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"path/filepath"
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"regexp"
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"runtime"
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"sort"
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"strconv"
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"strings"
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"time"
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"unicode"
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)
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var (
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verbose = flag.Bool("v", false, "verbose. if set, parallelism is set to 1.")
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numParallel = flag.Int("n", runtime.NumCPU(), "number of parallel tests to run")
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summary = flag.Bool("summary", false, "show summary of results")
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showSkips = flag.Bool("show_skips", false, "show skipped tests")
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runSkips = flag.Bool("run_skips", false, "run skipped tests (ignore skip and build tags)")
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linkshared = flag.Bool("linkshared", false, "")
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updateErrors = flag.Bool("update_errors", false, "update error messages in test file based on compiler output")
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runoutputLimit = flag.Int("l", defaultRunOutputLimit(), "number of parallel runoutput tests to run")
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shard = flag.Int("shard", 0, "shard index to run. Only applicable if -shards is non-zero.")
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shards = flag.Int("shards", 0, "number of shards. If 0, all tests are run. This is used by the continuous build.")
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)
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var (
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goos, goarch string
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// dirs are the directories to look for *.go files in.
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// TODO(bradfitz): just use all directories?
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dirs = []string{".", "ken", "chan", "interface", "syntax", "dwarf", "fixedbugs", "bugs"}
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// ratec controls the max number of tests running at a time.
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ratec chan bool
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// toRun is the channel of tests to run.
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// It is nil until the first test is started.
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toRun chan *test
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// rungatec controls the max number of runoutput tests
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// executed in parallel as they can each consume a lot of memory.
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rungatec chan bool
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)
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// maxTests is an upper bound on the total number of tests.
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// It is used as a channel buffer size to make sure sends don't block.
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const maxTests = 5000
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func main() {
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flag.Parse()
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goos = getenv("GOOS", runtime.GOOS)
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goarch = getenv("GOARCH", runtime.GOARCH)
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findExecCmd()
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// Disable parallelism if printing or if using a simulator.
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if *verbose || len(findExecCmd()) > 0 {
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*numParallel = 1
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}
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ratec = make(chan bool, *numParallel)
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rungatec = make(chan bool, *runoutputLimit)
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var tests []*test
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if flag.NArg() > 0 {
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for _, arg := range flag.Args() {
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if arg == "-" || arg == "--" {
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// Permit running:
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// $ go run run.go - env.go
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// $ go run run.go -- env.go
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// $ go run run.go - ./fixedbugs
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// $ go run run.go -- ./fixedbugs
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continue
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}
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if fi, err := os.Stat(arg); err == nil && fi.IsDir() {
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for _, baseGoFile := range goFiles(arg) {
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tests = append(tests, startTest(arg, baseGoFile))
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}
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} else if strings.HasSuffix(arg, ".go") {
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dir, file := filepath.Split(arg)
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tests = append(tests, startTest(dir, file))
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} else {
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log.Fatalf("can't yet deal with non-directory and non-go file %q", arg)
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}
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}
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} else {
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for _, dir := range dirs {
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for _, baseGoFile := range goFiles(dir) {
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tests = append(tests, startTest(dir, baseGoFile))
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}
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}
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}
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failed := false
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resCount := map[string]int{}
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for _, test := range tests {
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<-test.donec
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status := "ok "
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errStr := ""
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if _, isSkip := test.err.(skipError); isSkip {
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test.err = nil
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errStr = "unexpected skip for " + path.Join(test.dir, test.gofile) + ": " + errStr
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status = "FAIL"
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}
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if test.err != nil {
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status = "FAIL"
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errStr = test.err.Error()
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}
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if status == "FAIL" {
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failed = true
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}
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resCount[status]++
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dt := fmt.Sprintf("%.3fs", test.dt.Seconds())
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if status == "FAIL" {
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fmt.Printf("# go run run.go -- %s\n%s\nFAIL\t%s\t%s\n",
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path.Join(test.dir, test.gofile),
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errStr, test.goFileName(), dt)
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continue
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}
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if !*verbose {
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continue
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}
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fmt.Printf("%s\t%s\t%s\n", status, test.goFileName(), dt)
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}
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if *summary {
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for k, v := range resCount {
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fmt.Printf("%5d %s\n", v, k)
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}
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}
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if failed {
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os.Exit(1)
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}
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}
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func toolPath(name string) string {
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p := filepath.Join(os.Getenv("GOROOT"), "bin", "tool", name)
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if _, err := os.Stat(p); err != nil {
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log.Fatalf("didn't find binary at %s", p)
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}
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return p
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}
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func shardMatch(name string) bool {
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if *shards == 0 {
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return true
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}
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h := fnv.New32()
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io.WriteString(h, name)
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return int(h.Sum32()%uint32(*shards)) == *shard
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}
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func goFiles(dir string) []string {
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f, err := os.Open(dir)
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check(err)
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dirnames, err := f.Readdirnames(-1)
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check(err)
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names := []string{}
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for _, name := range dirnames {
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if !strings.HasPrefix(name, ".") && strings.HasSuffix(name, ".go") && shardMatch(name) {
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names = append(names, name)
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}
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}
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sort.Strings(names)
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return names
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}
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type runCmd func(...string) ([]byte, error)
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func compileFile(runcmd runCmd, longname string) (out []byte, err error) {
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cmd := []string{"go", "tool", "compile", "-e"}
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if *linkshared {
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cmd = append(cmd, "-dynlink", "-installsuffix=dynlink")
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}
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cmd = append(cmd, longname)
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return runcmd(cmd...)
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}
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func compileInDir(runcmd runCmd, dir string, names ...string) (out []byte, err error) {
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cmd := []string{"go", "tool", "compile", "-e", "-D", ".", "-I", "."}
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if *linkshared {
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cmd = append(cmd, "-dynlink", "-installsuffix=dynlink")
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}
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for _, name := range names {
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cmd = append(cmd, filepath.Join(dir, name))
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}
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return runcmd(cmd...)
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}
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func linkFile(runcmd runCmd, goname string) (err error) {
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pfile := strings.Replace(goname, ".go", ".o", -1)
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cmd := []string{"go", "tool", "link", "-w", "-o", "a.exe", "-L", "."}
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if *linkshared {
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cmd = append(cmd, "-linkshared", "-installsuffix=dynlink")
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}
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cmd = append(cmd, pfile)
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_, err = runcmd(cmd...)
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return
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}
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// skipError describes why a test was skipped.
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type skipError string
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func (s skipError) Error() string { return string(s) }
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func check(err error) {
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if err != nil {
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log.Fatal(err)
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}
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}
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// test holds the state of a test.
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type test struct {
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dir, gofile string
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donec chan bool // closed when done
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dt time.Duration
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src string
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action string // "compile", "build", etc.
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tempDir string
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err error
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}
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// startTest
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func startTest(dir, gofile string) *test {
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t := &test{
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dir: dir,
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gofile: gofile,
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donec: make(chan bool, 1),
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}
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if toRun == nil {
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toRun = make(chan *test, maxTests)
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go runTests()
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}
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select {
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case toRun <- t:
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default:
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panic("toRun buffer size (maxTests) is too small")
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}
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return t
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}
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// runTests runs tests in parallel, but respecting the order they
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// were enqueued on the toRun channel.
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func runTests() {
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for {
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ratec <- true
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t := <-toRun
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go func() {
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t.run()
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<-ratec
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}()
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}
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}
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var cwd, _ = os.Getwd()
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func (t *test) goFileName() string {
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return filepath.Join(t.dir, t.gofile)
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}
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func (t *test) goDirName() string {
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return filepath.Join(t.dir, strings.Replace(t.gofile, ".go", ".dir", -1))
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}
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func goDirFiles(longdir string) (filter []os.FileInfo, err error) {
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files, dirErr := ioutil.ReadDir(longdir)
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if dirErr != nil {
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return nil, dirErr
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}
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for _, gofile := range files {
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if filepath.Ext(gofile.Name()) == ".go" {
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filter = append(filter, gofile)
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}
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}
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return
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}
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var packageRE = regexp.MustCompile(`(?m)^package (\w+)`)
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func goDirPackages(longdir string) ([][]string, error) {
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files, err := goDirFiles(longdir)
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if err != nil {
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return nil, err
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}
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var pkgs [][]string
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m := make(map[string]int)
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for _, file := range files {
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name := file.Name()
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data, err := ioutil.ReadFile(filepath.Join(longdir, name))
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if err != nil {
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return nil, err
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}
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pkgname := packageRE.FindStringSubmatch(string(data))
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if pkgname == nil {
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return nil, fmt.Errorf("cannot find package name in %s", name)
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}
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i, ok := m[pkgname[1]]
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if !ok {
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i = len(pkgs)
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pkgs = append(pkgs, nil)
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m[pkgname[1]] = i
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}
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pkgs[i] = append(pkgs[i], name)
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}
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return pkgs, nil
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}
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type context struct {
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GOOS string
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GOARCH string
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}
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// shouldTest looks for build tags in a source file and returns
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// whether the file should be used according to the tags.
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func shouldTest(src string, goos, goarch string) (ok bool, whyNot string) {
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if *runSkips {
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return true, ""
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}
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for _, line := range strings.Split(src, "\n") {
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line = strings.TrimSpace(line)
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if strings.HasPrefix(line, "//") {
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line = line[2:]
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} else {
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continue
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}
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line = strings.TrimSpace(line)
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if len(line) == 0 || line[0] != '+' {
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continue
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}
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ctxt := &context{
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GOOS: goos,
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GOARCH: goarch,
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}
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words := strings.Fields(line)
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if words[0] == "+build" {
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ok := false
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for _, word := range words[1:] {
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if ctxt.match(word) {
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ok = true
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break
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}
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}
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if !ok {
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// no matching tag found.
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return false, line
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}
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}
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}
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// no build tags
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return true, ""
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}
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func (ctxt *context) match(name string) bool {
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if name == "" {
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return false
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}
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if i := strings.Index(name, ","); i >= 0 {
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// comma-separated list
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return ctxt.match(name[:i]) && ctxt.match(name[i+1:])
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}
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if strings.HasPrefix(name, "!!") { // bad syntax, reject always
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return false
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}
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if strings.HasPrefix(name, "!") { // negation
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return len(name) > 1 && !ctxt.match(name[1:])
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}
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// Tags must be letters, digits, underscores or dots.
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// Unlike in Go identifiers, all digits are fine (e.g., "386").
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for _, c := range name {
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if !unicode.IsLetter(c) && !unicode.IsDigit(c) && c != '_' && c != '.' {
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return false
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}
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}
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if name == ctxt.GOOS || name == ctxt.GOARCH {
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return true
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}
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if name == "test_run" {
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return true
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}
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return false
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}
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func init() { checkShouldTest() }
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// run runs a test.
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func (t *test) run() {
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start := time.Now()
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defer func() {
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t.dt = time.Since(start)
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close(t.donec)
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}()
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srcBytes, err := ioutil.ReadFile(t.goFileName())
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if err != nil {
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t.err = err
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return
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}
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t.src = string(srcBytes)
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if t.src[0] == '\n' {
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t.err = skipError("starts with newline")
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return
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}
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// Execution recipe stops at first blank line.
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pos := strings.Index(t.src, "\n\n")
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if pos == -1 {
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t.err = errors.New("double newline not found")
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return
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}
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action := t.src[:pos]
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if nl := strings.Index(action, "\n"); nl >= 0 && strings.Contains(action[:nl], "+build") {
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// skip first line
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action = action[nl+1:]
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}
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if strings.HasPrefix(action, "//") {
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action = action[2:]
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}
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// Check for build constraints only up to the actual code.
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pkgPos := strings.Index(t.src, "\npackage")
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if pkgPos == -1 {
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pkgPos = pos // some files are intentionally malformed
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}
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if ok, why := shouldTest(t.src[:pkgPos], goos, goarch); !ok {
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t.action = "skip"
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if *showSkips {
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fmt.Printf("%-20s %-20s: %s\n", t.action, t.goFileName(), why)
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}
|
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return
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}
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var args, flags []string
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wantError := false
|
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f := strings.Fields(action)
|
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if len(f) > 0 {
|
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action = f[0]
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args = f[1:]
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}
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|
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switch action {
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case "rundircmpout":
|
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action = "rundir"
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t.action = "rundir"
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case "cmpout":
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action = "run" // the run case already looks for <dir>/<test>.out files
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fallthrough
|
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case "compile", "compiledir", "build", "run", "runoutput", "rundir":
|
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t.action = action
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case "errorcheck", "errorcheckdir", "errorcheckoutput":
|
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t.action = action
|
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wantError = true
|
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for len(args) > 0 && strings.HasPrefix(args[0], "-") {
|
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if args[0] == "-0" {
|
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wantError = false
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} else {
|
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flags = append(flags, args[0])
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}
|
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args = args[1:]
|
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}
|
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case "skip":
|
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if *runSkips {
|
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break
|
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}
|
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t.action = "skip"
|
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return
|
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default:
|
|
t.err = skipError("skipped; unknown pattern: " + action)
|
|
t.action = "??"
|
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return
|
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}
|
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|
|
t.makeTempDir()
|
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defer os.RemoveAll(t.tempDir)
|
|
|
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err = ioutil.WriteFile(filepath.Join(t.tempDir, t.gofile), srcBytes, 0644)
|
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check(err)
|
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|
|
// A few tests (of things like the environment) require these to be set.
|
|
if os.Getenv("GOOS") == "" {
|
|
os.Setenv("GOOS", runtime.GOOS)
|
|
}
|
|
if os.Getenv("GOARCH") == "" {
|
|
os.Setenv("GOARCH", runtime.GOARCH)
|
|
}
|
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|
|
useTmp := true
|
|
ssaMain := false
|
|
runcmd := func(args ...string) ([]byte, error) {
|
|
cmd := exec.Command(args[0], args[1:]...)
|
|
var buf bytes.Buffer
|
|
cmd.Stdout = &buf
|
|
cmd.Stderr = &buf
|
|
if useTmp {
|
|
cmd.Dir = t.tempDir
|
|
cmd.Env = envForDir(cmd.Dir)
|
|
} else {
|
|
cmd.Env = os.Environ()
|
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}
|
|
if ssaMain && os.Getenv("GOARCH") == "amd64" {
|
|
cmd.Env = append(cmd.Env, "GOSSAPKG=main")
|
|
}
|
|
err := cmd.Run()
|
|
if err != nil {
|
|
err = fmt.Errorf("%s\n%s", err, buf.Bytes())
|
|
}
|
|
return buf.Bytes(), err
|
|
}
|
|
|
|
long := filepath.Join(cwd, t.goFileName())
|
|
switch action {
|
|
default:
|
|
t.err = fmt.Errorf("unimplemented action %q", action)
|
|
|
|
case "errorcheck":
|
|
cmdline := []string{"go", "tool", "compile", "-e", "-o", "a.o"}
|
|
// No need to add -dynlink even if linkshared if we're just checking for errors...
|
|
cmdline = append(cmdline, flags...)
|
|
cmdline = append(cmdline, long)
|
|
out, err := runcmd(cmdline...)
|
|
if wantError {
|
|
if err == nil {
|
|
t.err = fmt.Errorf("compilation succeeded unexpectedly\n%s", out)
|
|
return
|
|
}
|
|
} else {
|
|
if err != nil {
|
|
t.err = err
|
|
return
|
|
}
|
|
}
|
|
if *updateErrors {
|
|
t.updateErrors(string(out), long)
|
|
}
|
|
t.err = t.errorCheck(string(out), long, t.gofile)
|
|
return
|
|
|
|
case "compile":
|
|
_, t.err = compileFile(runcmd, long)
|
|
|
|
case "compiledir":
|
|
// Compile all files in the directory in lexicographic order.
|
|
longdir := filepath.Join(cwd, t.goDirName())
|
|
pkgs, err := goDirPackages(longdir)
|
|
if err != nil {
|
|
t.err = err
|
|
return
|
|
}
|
|
for _, gofiles := range pkgs {
|
|
_, t.err = compileInDir(runcmd, longdir, gofiles...)
|
|
if t.err != nil {
|
|
return
|
|
}
|
|
}
|
|
|
|
case "errorcheckdir":
|
|
// errorcheck all files in lexicographic order
|
|
// useful for finding importing errors
|
|
longdir := filepath.Join(cwd, t.goDirName())
|
|
pkgs, err := goDirPackages(longdir)
|
|
if err != nil {
|
|
t.err = err
|
|
return
|
|
}
|
|
for i, gofiles := range pkgs {
|
|
out, err := compileInDir(runcmd, longdir, gofiles...)
|
|
if i == len(pkgs)-1 {
|
|
if wantError && err == nil {
|
|
t.err = fmt.Errorf("compilation succeeded unexpectedly\n%s", out)
|
|
return
|
|
} else if !wantError && err != nil {
|
|
t.err = err
|
|
return
|
|
}
|
|
} else if err != nil {
|
|
t.err = err
|
|
return
|
|
}
|
|
var fullshort []string
|
|
for _, name := range gofiles {
|
|
fullshort = append(fullshort, filepath.Join(longdir, name), name)
|
|
}
|
|
t.err = t.errorCheck(string(out), fullshort...)
|
|
if t.err != nil {
|
|
break
|
|
}
|
|
}
|
|
|
|
case "rundir":
|
|
// Compile all files in the directory in lexicographic order.
|
|
// then link as if the last file is the main package and run it
|
|
longdir := filepath.Join(cwd, t.goDirName())
|
|
pkgs, err := goDirPackages(longdir)
|
|
if err != nil {
|
|
t.err = err
|
|
return
|
|
}
|
|
for i, gofiles := range pkgs {
|
|
_, err := compileInDir(runcmd, longdir, gofiles...)
|
|
if err != nil {
|
|
t.err = err
|
|
return
|
|
}
|
|
if i == len(pkgs)-1 {
|
|
err = linkFile(runcmd, gofiles[0])
|
|
if err != nil {
|
|
t.err = err
|
|
return
|
|
}
|
|
var cmd []string
|
|
cmd = append(cmd, findExecCmd()...)
|
|
cmd = append(cmd, filepath.Join(t.tempDir, "a.exe"))
|
|
cmd = append(cmd, args...)
|
|
out, err := runcmd(cmd...)
|
|
if err != nil {
|
|
t.err = err
|
|
return
|
|
}
|
|
if strings.Replace(string(out), "\r\n", "\n", -1) != t.expectedOutput() {
|
|
t.err = fmt.Errorf("incorrect output\n%s", out)
|
|
}
|
|
}
|
|
}
|
|
|
|
case "build":
|
|
_, err := runcmd("go", "build", "-o", "a.exe", long)
|
|
if err != nil {
|
|
t.err = err
|
|
}
|
|
|
|
case "run":
|
|
useTmp = false
|
|
ssaMain = true
|
|
cmd := []string{"go", "run"}
|
|
if *linkshared {
|
|
cmd = append(cmd, "-linkshared")
|
|
}
|
|
cmd = append(cmd, t.goFileName())
|
|
out, err := runcmd(append(cmd, args...)...)
|
|
if err != nil {
|
|
t.err = err
|
|
return
|
|
}
|
|
if strings.Replace(string(out), "\r\n", "\n", -1) != t.expectedOutput() {
|
|
t.err = fmt.Errorf("incorrect output\n%s", out)
|
|
}
|
|
|
|
case "runoutput":
|
|
rungatec <- true
|
|
defer func() {
|
|
<-rungatec
|
|
}()
|
|
useTmp = false
|
|
cmd := []string{"go", "run"}
|
|
if *linkshared {
|
|
cmd = append(cmd, "-linkshared")
|
|
}
|
|
cmd = append(cmd, t.goFileName())
|
|
out, err := runcmd(append(cmd, args...)...)
|
|
if err != nil {
|
|
t.err = err
|
|
return
|
|
}
|
|
tfile := filepath.Join(t.tempDir, "tmp__.go")
|
|
if err := ioutil.WriteFile(tfile, out, 0666); err != nil {
|
|
t.err = fmt.Errorf("write tempfile:%s", err)
|
|
return
|
|
}
|
|
ssaMain = true
|
|
cmd = []string{"go", "run"}
|
|
if *linkshared {
|
|
cmd = append(cmd, "-linkshared")
|
|
}
|
|
cmd = append(cmd, tfile)
|
|
out, err = runcmd(cmd...)
|
|
if err != nil {
|
|
t.err = err
|
|
return
|
|
}
|
|
if string(out) != t.expectedOutput() {
|
|
t.err = fmt.Errorf("incorrect output\n%s", out)
|
|
}
|
|
|
|
case "errorcheckoutput":
|
|
useTmp = false
|
|
cmd := []string{"go", "run"}
|
|
if *linkshared {
|
|
cmd = append(cmd, "-linkshared")
|
|
}
|
|
cmd = append(cmd, t.goFileName())
|
|
out, err := runcmd(append(cmd, args...)...)
|
|
if err != nil {
|
|
t.err = err
|
|
return
|
|
}
|
|
tfile := filepath.Join(t.tempDir, "tmp__.go")
|
|
err = ioutil.WriteFile(tfile, out, 0666)
|
|
if err != nil {
|
|
t.err = fmt.Errorf("write tempfile:%s", err)
|
|
return
|
|
}
|
|
cmdline := []string{"go", "tool", "compile", "-e", "-o", "a.o"}
|
|
cmdline = append(cmdline, flags...)
|
|
cmdline = append(cmdline, tfile)
|
|
out, err = runcmd(cmdline...)
|
|
if wantError {
|
|
if err == nil {
|
|
t.err = fmt.Errorf("compilation succeeded unexpectedly\n%s", out)
|
|
return
|
|
}
|
|
} else {
|
|
if err != nil {
|
|
t.err = err
|
|
return
|
|
}
|
|
}
|
|
t.err = t.errorCheck(string(out), tfile, "tmp__.go")
|
|
return
|
|
}
|
|
}
|
|
|
|
var execCmd []string
|
|
|
|
func findExecCmd() []string {
|
|
if execCmd != nil {
|
|
return execCmd
|
|
}
|
|
execCmd = []string{} // avoid work the second time
|
|
if goos == runtime.GOOS && goarch == runtime.GOARCH {
|
|
return execCmd
|
|
}
|
|
path, err := exec.LookPath(fmt.Sprintf("go_%s_%s_exec", goos, goarch))
|
|
if err == nil {
|
|
execCmd = []string{path}
|
|
}
|
|
return execCmd
|
|
}
|
|
|
|
func (t *test) String() string {
|
|
return filepath.Join(t.dir, t.gofile)
|
|
}
|
|
|
|
func (t *test) makeTempDir() {
|
|
var err error
|
|
t.tempDir, err = ioutil.TempDir("", "")
|
|
check(err)
|
|
}
|
|
|
|
func (t *test) expectedOutput() string {
|
|
filename := filepath.Join(t.dir, t.gofile)
|
|
filename = filename[:len(filename)-len(".go")]
|
|
filename += ".out"
|
|
b, _ := ioutil.ReadFile(filename)
|
|
return string(b)
|
|
}
|
|
|
|
func splitOutput(out string) []string {
|
|
// gc error messages continue onto additional lines with leading tabs.
|
|
// Split the output at the beginning of each line that doesn't begin with a tab.
|
|
// <autogenerated> lines are impossible to match so those are filtered out.
|
|
var res []string
|
|
for _, line := range strings.Split(out, "\n") {
|
|
if strings.HasSuffix(line, "\r") { // remove '\r', output by compiler on windows
|
|
line = line[:len(line)-1]
|
|
}
|
|
if strings.HasPrefix(line, "\t") {
|
|
res[len(res)-1] += "\n" + line
|
|
} else if strings.HasPrefix(line, "go tool") || strings.HasPrefix(line, "<autogenerated>") || strings.HasPrefix(line, "#") {
|
|
continue
|
|
} else if strings.TrimSpace(line) != "" {
|
|
res = append(res, line)
|
|
}
|
|
}
|
|
return res
|
|
}
|
|
|
|
func (t *test) errorCheck(outStr string, fullshort ...string) (err error) {
|
|
defer func() {
|
|
if *verbose && err != nil {
|
|
log.Printf("%s gc output:\n%s", t, outStr)
|
|
}
|
|
}()
|
|
var errs []error
|
|
out := splitOutput(outStr)
|
|
|
|
// Cut directory name.
|
|
for i := range out {
|
|
for j := 0; j < len(fullshort); j += 2 {
|
|
full, short := fullshort[j], fullshort[j+1]
|
|
out[i] = strings.Replace(out[i], full, short, -1)
|
|
}
|
|
}
|
|
|
|
var want []wantedError
|
|
for j := 0; j < len(fullshort); j += 2 {
|
|
full, short := fullshort[j], fullshort[j+1]
|
|
want = append(want, t.wantedErrors(full, short)...)
|
|
}
|
|
|
|
for _, we := range want {
|
|
var errmsgs []string
|
|
errmsgs, out = partitionStrings(we.prefix, out)
|
|
if len(errmsgs) == 0 {
|
|
errs = append(errs, fmt.Errorf("%s:%d: missing error %q", we.file, we.lineNum, we.reStr))
|
|
continue
|
|
}
|
|
matched := false
|
|
n := len(out)
|
|
for _, errmsg := range errmsgs {
|
|
if we.re.MatchString(errmsg) {
|
|
matched = true
|
|
} else {
|
|
out = append(out, errmsg)
|
|
}
|
|
}
|
|
if !matched {
|
|
errs = append(errs, fmt.Errorf("%s:%d: no match for %#q in:\n\t%s", we.file, we.lineNum, we.reStr, strings.Join(out[n:], "\n\t")))
|
|
continue
|
|
}
|
|
}
|
|
|
|
if len(out) > 0 {
|
|
errs = append(errs, fmt.Errorf("Unmatched Errors:"))
|
|
for _, errLine := range out {
|
|
errs = append(errs, fmt.Errorf("%s", errLine))
|
|
}
|
|
}
|
|
|
|
if len(errs) == 0 {
|
|
return nil
|
|
}
|
|
if len(errs) == 1 {
|
|
return errs[0]
|
|
}
|
|
var buf bytes.Buffer
|
|
fmt.Fprintf(&buf, "\n")
|
|
for _, err := range errs {
|
|
fmt.Fprintf(&buf, "%s\n", err.Error())
|
|
}
|
|
return errors.New(buf.String())
|
|
}
|
|
|
|
func (t *test) updateErrors(out, file string) {
|
|
base := path.Base(file)
|
|
// Read in source file.
|
|
src, err := ioutil.ReadFile(file)
|
|
if err != nil {
|
|
fmt.Fprintln(os.Stderr, err)
|
|
return
|
|
}
|
|
lines := strings.Split(string(src), "\n")
|
|
// Remove old errors.
|
|
for i, ln := range lines {
|
|
pos := strings.Index(ln, " // ERROR ")
|
|
if pos >= 0 {
|
|
lines[i] = ln[:pos]
|
|
}
|
|
}
|
|
// Parse new errors.
|
|
errors := make(map[int]map[string]bool)
|
|
tmpRe := regexp.MustCompile(`autotmp_[0-9]+`)
|
|
for _, errStr := range splitOutput(out) {
|
|
colon1 := strings.Index(errStr, ":")
|
|
if colon1 < 0 || errStr[:colon1] != file {
|
|
continue
|
|
}
|
|
colon2 := strings.Index(errStr[colon1+1:], ":")
|
|
if colon2 < 0 {
|
|
continue
|
|
}
|
|
colon2 += colon1 + 1
|
|
line, err := strconv.Atoi(errStr[colon1+1 : colon2])
|
|
line--
|
|
if err != nil || line < 0 || line >= len(lines) {
|
|
continue
|
|
}
|
|
msg := errStr[colon2+2:]
|
|
msg = strings.Replace(msg, file, base, -1) // normalize file mentions in error itself
|
|
msg = strings.TrimLeft(msg, " \t")
|
|
for _, r := range []string{`\`, `*`, `+`, `[`, `]`, `(`, `)`} {
|
|
msg = strings.Replace(msg, r, `\`+r, -1)
|
|
}
|
|
msg = strings.Replace(msg, `"`, `.`, -1)
|
|
msg = tmpRe.ReplaceAllLiteralString(msg, `autotmp_[0-9]+`)
|
|
if errors[line] == nil {
|
|
errors[line] = make(map[string]bool)
|
|
}
|
|
errors[line][msg] = true
|
|
}
|
|
// Add new errors.
|
|
for line, errs := range errors {
|
|
var sorted []string
|
|
for e := range errs {
|
|
sorted = append(sorted, e)
|
|
}
|
|
sort.Strings(sorted)
|
|
lines[line] += " // ERROR"
|
|
for _, e := range sorted {
|
|
lines[line] += fmt.Sprintf(` "%s$"`, e)
|
|
}
|
|
}
|
|
// Write new file.
|
|
err = ioutil.WriteFile(file, []byte(strings.Join(lines, "\n")), 0640)
|
|
if err != nil {
|
|
fmt.Fprintln(os.Stderr, err)
|
|
return
|
|
}
|
|
// Polish.
|
|
exec.Command("go", "fmt", file).CombinedOutput()
|
|
}
|
|
|
|
// matchPrefix reports whether s is of the form ^(.*/)?prefix(:|[),
|
|
// That is, it needs the file name prefix followed by a : or a [,
|
|
// and possibly preceded by a directory name.
|
|
func matchPrefix(s, prefix string) bool {
|
|
i := strings.Index(s, ":")
|
|
if i < 0 {
|
|
return false
|
|
}
|
|
j := strings.LastIndex(s[:i], "/")
|
|
s = s[j+1:]
|
|
if len(s) <= len(prefix) || s[:len(prefix)] != prefix {
|
|
return false
|
|
}
|
|
switch s[len(prefix)] {
|
|
case '[', ':':
|
|
return true
|
|
}
|
|
return false
|
|
}
|
|
|
|
func partitionStrings(prefix string, strs []string) (matched, unmatched []string) {
|
|
for _, s := range strs {
|
|
if matchPrefix(s, prefix) {
|
|
matched = append(matched, s)
|
|
} else {
|
|
unmatched = append(unmatched, s)
|
|
}
|
|
}
|
|
return
|
|
}
|
|
|
|
type wantedError struct {
|
|
reStr string
|
|
re *regexp.Regexp
|
|
lineNum int
|
|
file string
|
|
prefix string
|
|
}
|
|
|
|
var (
|
|
errRx = regexp.MustCompile(`// (?:GC_)?ERROR (.*)`)
|
|
errQuotesRx = regexp.MustCompile(`"([^"]*)"`)
|
|
lineRx = regexp.MustCompile(`LINE(([+-])([0-9]+))?`)
|
|
)
|
|
|
|
func (t *test) wantedErrors(file, short string) (errs []wantedError) {
|
|
cache := make(map[string]*regexp.Regexp)
|
|
|
|
src, _ := ioutil.ReadFile(file)
|
|
for i, line := range strings.Split(string(src), "\n") {
|
|
lineNum := i + 1
|
|
if strings.Contains(line, "////") {
|
|
// double comment disables ERROR
|
|
continue
|
|
}
|
|
m := errRx.FindStringSubmatch(line)
|
|
if m == nil {
|
|
continue
|
|
}
|
|
all := m[1]
|
|
mm := errQuotesRx.FindAllStringSubmatch(all, -1)
|
|
if mm == nil {
|
|
log.Fatalf("%s:%d: invalid errchk line: %s", t.goFileName(), lineNum, line)
|
|
}
|
|
for _, m := range mm {
|
|
rx := lineRx.ReplaceAllStringFunc(m[1], func(m string) string {
|
|
n := lineNum
|
|
if strings.HasPrefix(m, "LINE+") {
|
|
delta, _ := strconv.Atoi(m[5:])
|
|
n += delta
|
|
} else if strings.HasPrefix(m, "LINE-") {
|
|
delta, _ := strconv.Atoi(m[5:])
|
|
n -= delta
|
|
}
|
|
return fmt.Sprintf("%s:%d", short, n)
|
|
})
|
|
re := cache[rx]
|
|
if re == nil {
|
|
var err error
|
|
re, err = regexp.Compile(rx)
|
|
if err != nil {
|
|
log.Fatalf("%s:%d: invalid regexp \"%s\" in ERROR line: %v", t.goFileName(), lineNum, rx, err)
|
|
}
|
|
cache[rx] = re
|
|
}
|
|
prefix := fmt.Sprintf("%s:%d", short, lineNum)
|
|
errs = append(errs, wantedError{
|
|
reStr: rx,
|
|
re: re,
|
|
prefix: prefix,
|
|
lineNum: lineNum,
|
|
file: short,
|
|
})
|
|
}
|
|
}
|
|
|
|
return
|
|
}
|
|
|
|
// defaultRunOutputLimit returns the number of runoutput tests that
|
|
// can be executed in parallel.
|
|
func defaultRunOutputLimit() int {
|
|
const maxArmCPU = 2
|
|
|
|
cpu := runtime.NumCPU()
|
|
if runtime.GOARCH == "arm" && cpu > maxArmCPU {
|
|
cpu = maxArmCPU
|
|
}
|
|
return cpu
|
|
}
|
|
|
|
// checkShouldTest runs sanity checks on the shouldTest function.
|
|
func checkShouldTest() {
|
|
assert := func(ok bool, _ string) {
|
|
if !ok {
|
|
panic("fail")
|
|
}
|
|
}
|
|
assertNot := func(ok bool, _ string) { assert(!ok, "") }
|
|
|
|
// Simple tests.
|
|
assert(shouldTest("// +build linux", "linux", "arm"))
|
|
assert(shouldTest("// +build !windows", "linux", "arm"))
|
|
assertNot(shouldTest("// +build !windows", "windows", "amd64"))
|
|
|
|
// A file with no build tags will always be tested.
|
|
assert(shouldTest("// This is a test.", "os", "arch"))
|
|
|
|
// Build tags separated by a space are OR-ed together.
|
|
assertNot(shouldTest("// +build arm 386", "linux", "amd64"))
|
|
|
|
// Build tags separated by a comma are AND-ed together.
|
|
assertNot(shouldTest("// +build !windows,!plan9", "windows", "amd64"))
|
|
assertNot(shouldTest("// +build !windows,!plan9", "plan9", "386"))
|
|
|
|
// Build tags on multiple lines are AND-ed together.
|
|
assert(shouldTest("// +build !windows\n// +build amd64", "linux", "amd64"))
|
|
assertNot(shouldTest("// +build !windows\n// +build amd64", "windows", "amd64"))
|
|
|
|
// Test that (!a OR !b) matches anything.
|
|
assert(shouldTest("// +build !windows !plan9", "windows", "amd64"))
|
|
}
|
|
|
|
// envForDir returns a copy of the environment
|
|
// suitable for running in the given directory.
|
|
// The environment is the current process's environment
|
|
// but with an updated $PWD, so that an os.Getwd in the
|
|
// child will be faster.
|
|
func envForDir(dir string) []string {
|
|
env := os.Environ()
|
|
for i, kv := range env {
|
|
if strings.HasPrefix(kv, "PWD=") {
|
|
env[i] = "PWD=" + dir
|
|
return env
|
|
}
|
|
}
|
|
env = append(env, "PWD="+dir)
|
|
return env
|
|
}
|
|
|
|
func getenv(key, def string) string {
|
|
value := os.Getenv(key)
|
|
if value != "" {
|
|
return value
|
|
}
|
|
return def
|
|
}
|