go issues_test 源码
golang issues_test 代码
文件路径：/src/go/ast/issues_test.go
// Copyright 2019 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 ast_test
import (
"go/ast"
"go/parser"
"go/token"
"testing"
)
func TestIssue33649(t *testing.T) {
for _, src := range []string{
`package p; func _()`,
`package p; func _() {`,
`package p; func _() { _ = 0`,
`package p; func _() { _ = 0 }`,
} {
fset := token.NewFileSet()
f, _ := parser.ParseFile(fset, "", src, parser.AllErrors)
if f == nil {
panic("invalid test setup: parser didn't return an AST")
}
// find corresponding token.File
var tf *token.File
fset.Iterate(func(f *token.File) bool {
tf = f
return true
})
tfEnd := tf.Base() + tf.Size()
fd := f.Decls[len(f.Decls)-1].(*ast.FuncDecl)
fdEnd := int(fd.End())
if fdEnd != tfEnd {
t.Errorf("%q: got fdEnd = %d; want %d (base = %d, size = %d)", src, fdEnd, tfEnd, tf.Base(), tf.Size())
}
}
}
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