blob: 6bd137dd6719dd5ff289bedc34691fdcb82190fd [file] [log] [blame]
// Copyright 2014 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.
//go:build generate
// +build generate
package triegen_test
// The code in this file generates captures and writes the tries generated in
// the examples to data_test.go. To invoke it, run:
// go test -tags=generate
// Making the generation code a "test" allows us to link in the necessary test
// code.
import (
func init() {
const tmpfile = "tmpout"
const dstfile = "data_test.go"
f, err := os.Create(tmpfile)
if err != nil {
log.Fatalf("Could not create output file: %v", err)
defer os.Remove(tmpfile)
defer f.Close()
// We exit before this function returns, regardless of success or failure,
// so there's no need to save (and later restore) the existing genWriter
// value.
genWriter = f
if err := exec.Command("gofmt", "-w", tmpfile).Run(); err != nil {
os.Rename(tmpfile, dstfile)
const header = `// This file is generated with "go test -tags generate". DO NOT EDIT!
// +build !generate
package triegen_test
// Stubs for generated tries. These are needed as we exclude data_test.go if
// the generate flag is set. This will clearly make the tests fail, but that
// is okay. It allows us to bootstrap.
type trie struct{}
func (t *trie) lookupString(string) (uint8, int) { return 0, 1 }
func (t *trie) lookupStringUnsafe(string) uint64 { return 0 }
func newRandTrie(i int) *trie { return &trie{} }
func newMultiTrie(i int) *trie { return &trie{} }