syncthing/meta/metalint_test.go
Jakob Borg 200a7fc844 meta: Move metadata checks into meta directory, make them tests
This moves a few things from script/ to a new directory meta/, and makes
them real Go tests. These are the authors, copyright, metalint and gofmt
checks. That means that they can now be run by

go test -v ./meta

and optionally filtered by the usual -run thing to go test. Also -short
will cut down on the metalint stuff and exclude the authors check (which
is slow because it runs git lots of times).

Mainly this makes everything easier on things like build servers where
we can now just run tests instead of do a bunch of scripting.

GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/4252
2017-07-07 20:43:26 +00:00

114 lines
2.6 KiB
Go

// Copyright (C) 2017 The Syncthing Authors.
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this file,
// You can obtain one at https://mozilla.org/MPL/2.0/.
package meta
import (
"bytes"
"log"
"os/exec"
"strings"
"testing"
)
var (
// fast linters complete in a fraction of a second and might as well be
// run always as part of the build
fastLinters = []string{
"deadcode",
"golint",
"ineffassign",
"vet",
}
// slow linters take several seconds and are run only as part of the
// "metalint" command.
slowLinters = []string{
"gosimple",
"staticcheck",
"structcheck",
"unused",
"varcheck",
}
// Which parts of the tree to lint
lintDirs = []string{".", "../script/...", "../lib/...", "../cmd/..."}
// Messages to ignore
lintExcludes = []string{
".pb.go",
"should have comment",
"protocol.Vector composite literal uses unkeyed fields",
"cli.Requires composite literal uses unkeyed fields",
"Use DialContext instead", // Go 1.7
"os.SEEK_SET is deprecated", // Go 1.7
"SA4017", // staticcheck "is a pure function but its return value is ignored"
}
)
func TestCheckMetalint(t *testing.T) {
if !isGometalinterInstalled() {
return
}
gometalinter(t, lintDirs, lintExcludes...)
}
func isGometalinterInstalled() bool {
if _, err := runError("gometalinter", "--disable-all"); err != nil {
log.Println("gometalinter is not installed")
return false
}
return true
}
func gometalinter(t *testing.T, dirs []string, excludes ...string) bool {
params := []string{"--disable-all", "--concurrency=2", "--deadline=300s"}
for _, linter := range fastLinters {
params = append(params, "--enable="+linter)
}
if !testing.Short() {
for _, linter := range slowLinters {
params = append(params, "--enable="+linter)
}
}
for _, exclude := range excludes {
params = append(params, "--exclude="+exclude)
}
params = append(params, dirs...)
bs, _ := runError("gometalinter", params...)
nerr := 0
lines := make(map[string]struct{})
for _, line := range strings.Split(string(bs), "\n") {
if line == "" {
continue
}
if _, ok := lines[line]; ok {
continue
}
log.Println(line)
if strings.Contains(line, "executable file not found") {
log.Println(` - Try "go run build.go setup" to install missing tools`)
}
lines[line] = struct{}{}
nerr++
}
return nerr == 0
}
func runError(cmd string, args ...string) ([]byte, error) {
ecmd := exec.Command(cmd, args...)
bs, err := ecmd.CombinedOutput()
return bytes.TrimSpace(bs), err
}