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// Copyright 2023 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 versions_test
import (
"fmt"
"go/ast"
"go/importer"
"go/parser"
"go/token"
"go/types"
"testing"
"golang.org/x/tools/internal/testenv"
"golang.org/x/tools/internal/versions"
)
func Test(t *testing.T) {
testenv.NeedsGo1Point(t, 22)
var contents = map[string]string{
"gobuild.go": `
//go:build go1.23
package p
`,
"noversion.go": `
package p
`,
}
type fileTest struct {
fname string
want string
}
for _, item := range []struct {
goversion string
pversion string
tests []fileTest
}{
// {"", "", []fileTest{{"noversion.go", ""}, {"gobuild.go", ""}}}, // TODO(matloob): re-enable this test (with modifications) once CL 607955 has been submitted
{"go1.22", "go1.22", []fileTest{{"noversion.go", "go1.22"}, {"gobuild.go", "go1.23"}}},
} {
name := fmt.Sprintf("types.Config{GoVersion:%q}", item.goversion)
t.Run(name, func(t *testing.T) {
fset := token.NewFileSet()
files := make([]*ast.File, len(item.tests))
for i, test := range item.tests {
files[i] = parse(t, fset, test.fname, contents[test.fname])
}
pkg, info := typeCheck(t, fset, files, item.goversion)
if got, want := versions.GoVersion(pkg), item.pversion; versions.Compare(got, want) != 0 {
t.Errorf("GoVersion()=%q. expected %q", got, want)
}
if got := versions.FileVersion(info, nil); got != "" {
t.Errorf(`FileVersions(nil)=%q. expected ""`, got)
}
for i, test := range item.tests {
if got, want := versions.FileVersion(info, files[i]), test.want; got != want {
t.Errorf("FileVersions(%s)=%q. expected %q", test.fname, got, want)
}
}
})
}
}
func parse(t *testing.T, fset *token.FileSet, name, src string) *ast.File {
file, err := parser.ParseFile(fset, name, src, 0)
if err != nil {
t.Fatal(err)
}
return file
}
func typeCheck(t *testing.T, fset *token.FileSet, files []*ast.File, goversion string) (*types.Package, *types.Info) {
conf := types.Config{
Importer: importer.Default(),
GoVersion: goversion,
}
info := types.Info{}
versions.InitFileVersions(&info)
pkg, err := conf.Check("", fset, files, &info)
if err != nil {
t.Fatal(err)
}
return pkg, &info
}
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