blob: d58a05d056914be314206be27cd7a2f60c908063 [file] [log] [blame]
// 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 mod
import (
"io/ioutil"
"os"
"path/filepath"
"testing"
"golang.org/x/tools/internal/lsp/cache"
"golang.org/x/tools/internal/lsp/tests"
"golang.org/x/tools/internal/span"
"golang.org/x/tools/internal/testenv"
)
func TestMain(m *testing.M) {
testenv.ExitIfSmallMachine()
os.Exit(m.Run())
}
func TestModfileRemainsUnchanged(t *testing.T) {
testenv.NeedsGo1Point(t, 14)
ctx := tests.Context(t)
cache := cache.New(ctx, nil)
session := cache.NewSession(ctx)
options := tests.DefaultOptions()
options.TempModfile = true
options.Env = append(os.Environ(), "GOPACKAGESDRIVER=off", "GOROOT=")
// Make sure to copy the test directory to a temporary directory so we do not
// modify the test code or add go.sum files when we run the tests.
folder, err := tests.CopyFolderToTempDir(filepath.Join("testdata", "unchanged"))
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(folder)
before, err := ioutil.ReadFile(filepath.Join(folder, "go.mod"))
if err != nil {
t.Fatal(err)
}
if _, _, err := session.NewView(ctx, "diagnostics_test", span.URIFromPath(folder), options); err != nil {
t.Fatal(err)
}
after, err := ioutil.ReadFile(filepath.Join(folder, "go.mod"))
if err != nil {
t.Fatal(err)
}
if string(before) != string(after) {
t.Errorf("the real go.mod file was changed even when tempModfile=true")
}
}