add prune and remove unused packages

vendor/golang.org/x/tools/internal/gopathwalk/walk_test.go

@@ -1,135 +0,0 @@
-// 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"
-	"os"
-	"path/filepath"
-	"reflect"
-	"runtime"
-	"strings"
-	"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)
-		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
-	walkDir(Root{filepath.Join(dir, "src"), RootGOPATH}, func(root Root, dir string) {
-		found = append(found, dir[len(root.Path)+1:])
-	}, Options{ModulesEnabled: false, Debug: true})
-	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
-}