| // Copyright 2020 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 regtest |
| |
| import ( |
| "testing" |
| |
| "golang.org/x/tools/internal/lsp/tests" |
| "golang.org/x/tools/internal/testenv" |
| ) |
| |
| func TestModFileModification(t *testing.T) { |
| testenv.NeedsGo1Point(t, 14) |
| |
| const proxy = ` |
| -- example.com@v1.2.3/go.mod -- |
| module example.com |
| |
| go 1.12 |
| -- example.com@v1.2.3/blah/blah.go -- |
| package blah |
| |
| const Name = "Blah" |
| ` |
| const untidyModule = ` |
| -- go.mod -- |
| module mod.com |
| |
| -- main.go -- |
| package main |
| |
| import "example.com/blah" |
| |
| func main() { |
| fmt.Println(blah.Name) |
| }` |
| runner.Run(t, untidyModule, func(t *testing.T, env *Env) { |
| // Open the file and make sure that the initial workspace load does not |
| // modify the go.mod file. |
| goModContent := env.ReadWorkspaceFile("go.mod") |
| env.OpenFile("main.go") |
| env.Await( |
| env.DiagnosticAtRegexp("main.go", "\"example.com/blah\""), |
| ) |
| if got := env.ReadWorkspaceFile("go.mod"); got != goModContent { |
| t.Fatalf("go.mod changed on disk:\n%s", tests.Diff(want, got)) |
| } |
| // Save the buffer, which will format and organize imports. |
| // Confirm that the go.mod file still does not change. |
| env.SaveBuffer("main.go") |
| env.Await( |
| env.DiagnosticAtRegexp("main.go", "\"example.com/blah\""), |
| ) |
| if got := env.ReadWorkspaceFile("go.mod"); got != goModContent { |
| t.Fatalf("go.mod changed on disk:\n%s", tests.Diff(want, got)) |
| } |
| }, WithProxy(proxy)) |
| } |