go index_test 源码
golang index_test 代码
文件路径：/src/cmd/go/internal/modindex/index_test.go
// Copyright 2022 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 modindex
import (
"encoding/hex"
"encoding/json"
"go/build"
"internal/diff"
"path/filepath"
"reflect"
"runtime"
"testing"
)
func init() {
isTest = true
enabled = true // to allow GODEBUG=goindex=0 go test, when things are very broken
}
func TestIndex(t *testing.T) {
src := filepath.Join(runtime.GOROOT(), "src")
checkPkg := func(t *testing.T, m *Module, pkg string, data []byte) {
p := m.Package(pkg)
bp, err := p.Import(build.Default, build.ImportComment)
if err != nil {
t.Fatal(err)
}
bp1, err := build.Default.Import(pkg, filepath.Join(src, pkg), build.ImportComment)
if err != nil {
t.Fatal(err)
}
if !reflect.DeepEqual(bp, bp1) {
t.Errorf("mismatch")
t.Logf("index:\n%s", hex.Dump(data))
js, err := json.MarshalIndent(bp, "", "\t")
if err != nil {
t.Fatal(err)
}
js1, err := json.MarshalIndent(bp1, "", "\t")
if err != nil {
t.Fatal(err)
}
t.Logf("diff:\n%s", diff.Diff("index", js, "correct", js1))
t.FailNow()
}
}
// Check packages in increasing complexity, one at a time.
pkgs := []string{
"crypto",
"encoding",
"unsafe",
"encoding/json",
"runtime",
"net",
}
var raws []*rawPackage
for _, pkg := range pkgs {
raw := importRaw(src, pkg)
raws = append(raws, raw)
t.Run(pkg, func(t *testing.T) {
data := encodeModuleBytes([]*rawPackage{raw})
m, err := fromBytes(src, data)
if err != nil {
t.Fatal(err)
}
checkPkg(t, m, pkg, data)
})
}
// Check that a multi-package index works too.
t.Run("all", func(t *testing.T) {
data := encodeModuleBytes(raws)
m, err := fromBytes(src, data)
if err != nil {
t.Fatal(err)
}
for _, pkg := range pkgs {
checkPkg(t, m, pkg, data)
}
})
}
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