go self_test 源码
golang self_test 代码
文件路径：/src/go/types/self_test.go
// Copyright 2013 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 types_test
import (
"go/ast"
"go/importer"
"go/parser"
"go/token"
"path"
"path/filepath"
"testing"
"time"
. "go/types"
)
func TestSelf(t *testing.T) {
fset := token.NewFileSet()
files, err := pkgFiles(fset, ".", 0)
if err != nil {
t.Fatal(err)
}
conf := Config{Importer: importer.Default()}
_, err = conf.Check("go/types", fset, files, nil)
if err != nil {
t.Fatal(err)
}
}
func BenchmarkCheck(b *testing.B) {
for _, p := range []string{
"net/http",
"go/parser",
"go/constant",
"runtime",
filepath.Join("go", "internal", "gcimporter"),
} {
b.Run(path.Base(p), func(b *testing.B) {
path := filepath.Join("..", "..", p)
for _, ignoreFuncBodies := range []bool{false, true} {
name := "funcbodies"
if ignoreFuncBodies {
name = "nofuncbodies"
}
b.Run(name, func(b *testing.B) {
b.Run("info", func(b *testing.B) {
runbench(b, path, ignoreFuncBodies, true)
})
b.Run("noinfo", func(b *testing.B) {
runbench(b, path, ignoreFuncBodies, false)
})
})
}
})
}
}
func runbench(b *testing.B, path string, ignoreFuncBodies, writeInfo bool) {
fset := token.NewFileSet()
files, err := pkgFiles(fset, path, 0)
if err != nil {
b.Fatal(err)
}
// determine line count
lines := 0
fset.Iterate(func(f *token.File) bool {
lines += f.LineCount()
return true
})
b.ResetTimer()
start := time.Now()
for i := 0; i < b.N; i++ {
conf := Config{
IgnoreFuncBodies: ignoreFuncBodies,
Importer: importer.Default(),
}
var info *Info
if writeInfo {
info = &Info{
Types: make(map[ast.Expr]TypeAndValue),
Defs: make(map[*ast.Ident]Object),
Uses: make(map[*ast.Ident]Object),
Implicits: make(map[ast.Node]Object),
Selections: make(map[*ast.SelectorExpr]*Selection),
Scopes: make(map[ast.Node]*Scope),
}
}
if _, err := conf.Check(path, fset, files, info); err != nil {
b.Fatal(err)
}
}
b.StopTimer()
b.ReportMetric(float64(lines)*float64(b.N)/time.Since(start).Seconds(), "lines/s")
}
func pkgFiles(fset *token.FileSet, path string, mode parser.Mode) ([]*ast.File, error) {
filenames, err := pkgFilenames(path) // from stdlib_test.go
if err != nil {
return nil, err
}
var files []*ast.File
for _, filename := range filenames {
file, err := parser.ParseFile(fset, filename, nil, mode)
if err != nil {
return nil, err
}
files = append(files, file)
}
return files, nil
}
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