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// Copyright 2018 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.
package gopathwalk
import (
"io/ioutil"
"log"
"os"
"path/filepath"
"reflect"
"runtime"
"strings"
"sync"
"testing"
)
func TestShouldTraverse(t *testing.T) {
switch runtime.GOOS {
case "windows", "plan9":
t.Skipf("skipping symlink-requiring test on %s", runtime.GOOS)
}
dir, err := ioutil.TempDir("", "goimports-")
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(dir)
// Note: mapToDir prepends "src" to each element, since
// mapToDir was made for creating GOPATHs.
if err := mapToDir(dir, map[string]string{
"foo/foo2/file.txt": "",
"foo/foo2/link-to-src": "LINK:../../",
"foo/foo2/link-to-src-foo": "LINK:../../foo",
"foo/foo2/link-to-dot": "LINK:.",
"bar/bar2/file.txt": "",
"bar/bar2/link-to-src-foo": "LINK:../../foo",
"a/b/c": "LINK:../../a/d",
"a/d/e": "LINK:../../a/b",
}); err != nil {
t.Fatal(err)
}
tests := []struct {
dir string
file string
want bool
}{
{
dir: "src/foo/foo2",
file: "link-to-src-foo",
want: false, // loop
},
{
dir: "src/foo/foo2",
file: "link-to-src",
want: false, // loop
},
{
dir: "src/foo/foo2",
file: "link-to-dot",
want: false, // loop
},
{
dir: "src/bar/bar2",
file: "link-to-src-foo",
want: true, // not a loop
},
{
dir: "src/a/b/c",
file: "e",
want: false, // loop: "e" is the same as "b".
},
}
for i, tt := range tests {
fi, err := os.Stat(filepath.Join(dir, tt.dir, tt.file))
if err != nil {
t.Errorf("%d. Stat = %v", i, err)
continue
}
var w walker
got := w.shouldTraverse(filepath.Join(dir, tt.dir, fi.Name()))
if got != tt.want {
t.Errorf("%d. shouldTraverse(%q, %q) = %v; want %v", i, tt.dir, tt.file, got, tt.want)
}
}
}
// TestSkip tests that various goimports rules are followed in non-modules mode.
func TestSkip(t *testing.T) {
dir, err := ioutil.TempDir("", "goimports-")
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(dir)
if err := mapToDir(dir, map[string]string{
"ignoreme/f.go": "package ignoreme", // ignored by .goimportsignore
"node_modules/f.go": "package nodemodules;", // ignored by hardcoded node_modules filter
"v/f.go": "package v;", // ignored by hardcoded vgo cache rule
"mod/f.go": "package mod;", // ignored by hardcoded vgo cache rule
"shouldfind/f.go": "package shouldfind;", // not ignored
".goimportsignore": "ignoreme\n",
}); err != nil {
t.Fatal(err)
}
var found []string
var mu sync.Mutex
walkDir(Root{filepath.Join(dir, "src"), RootGOPATH},
func(root Root, dir string) {
mu.Lock()
defer mu.Unlock()
found = append(found, dir[len(root.Path)+1:])
}, func(root Root, dir string) bool {
return false
}, Options{ModulesEnabled: false, Logf: log.Printf})
if want := []string{"shouldfind"}; !reflect.DeepEqual(found, want) {
t.Errorf("expected to find only %v, got %v", want, found)
}
}
// TestSkipFunction tests that scan successfully skips directories from user callback.
func TestSkipFunction(t *testing.T) {
dir, err := ioutil.TempDir("", "goimports-")
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(dir)
if err := mapToDir(dir, map[string]string{
"ignoreme/f.go": "package ignoreme", // ignored by skip
"ignoreme/subignore/f.go": "package subignore", // also ignored by skip
"shouldfind/f.go": "package shouldfind;", // not ignored
}); err != nil {
t.Fatal(err)
}
var found []string
var mu sync.Mutex
walkDir(Root{filepath.Join(dir, "src"), RootGOPATH},
func(root Root, dir string) {
mu.Lock()
defer mu.Unlock()
found = append(found, dir[len(root.Path)+1:])
}, func(root Root, dir string) bool {
return strings.HasSuffix(dir, "ignoreme")
},
Options{ModulesEnabled: false})
if want := []string{"shouldfind"}; !reflect.DeepEqual(found, want) {
t.Errorf("expected to find only %v, got %v", want, found)
}
}
func mapToDir(destDir string, files map[string]string) error {
for path, contents := range files {
file := filepath.Join(destDir, "src", path)
if err := os.MkdirAll(filepath.Dir(file), 0755); err != nil {
return err
}
var err error
if strings.HasPrefix(contents, "LINK:") {
err = os.Symlink(strings.TrimPrefix(contents, "LINK:"), file)
} else {
err = ioutil.WriteFile(file, []byte(contents), 0644)
}
if err != nil {
return err
}
}
return nil
}
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