mirror of
https://github.com/golang/go
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412b8bda49
To manually collect cache entries, we need to know when a snapshot is idle. Add a reference count in the form of a WaitGroup and keep track of its uses. The pattern is that any time a snapshot is returned, it comes with a release function that decrements the ref count. Almost all uses of a snapshot originate in a user-facing request, handled in beginFileRequest. There it's mostly an exercise in passing Snapshots around instead of Views. In the other places I took the path of least resistance. For file modifications I tried to minimize the amount of code that needed to deal with snapshots. For diagnostics I just acquired the snapshot at the diagnostics call. Change-Id: Id48a2df3acdd97f27d905e2c2be23072f28f196b Reviewed-on: https://go-review.googlesource.com/c/tools/+/241837 Run-TryBot: Heschi Kreinick <heschi@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Rebecca Stambler <rstambler@golang.org>
59 lines
1.5 KiB
Go
59 lines
1.5 KiB
Go
// Copyright 2019 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package mod
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import (
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"io/ioutil"
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"os"
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"path/filepath"
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"testing"
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"golang.org/x/tools/internal/lsp/cache"
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"golang.org/x/tools/internal/lsp/tests"
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"golang.org/x/tools/internal/span"
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"golang.org/x/tools/internal/testenv"
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)
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func TestMain(m *testing.M) {
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testenv.ExitIfSmallMachine()
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os.Exit(m.Run())
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}
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func TestModfileRemainsUnchanged(t *testing.T) {
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testenv.NeedsGo1Point(t, 14)
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ctx := tests.Context(t)
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cache := cache.New(ctx, nil)
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session := cache.NewSession(ctx)
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options := tests.DefaultOptions()
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options.TempModfile = true
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options.Env = append(os.Environ(), "GOPACKAGESDRIVER=off", "GOROOT=")
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// Make sure to copy the test directory to a temporary directory so we do not
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// modify the test code or add go.sum files when we run the tests.
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folder, err := tests.CopyFolderToTempDir(filepath.Join("testdata", "unchanged"))
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if err != nil {
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t.Fatal(err)
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}
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defer os.RemoveAll(folder)
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before, err := ioutil.ReadFile(filepath.Join(folder, "go.mod"))
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if err != nil {
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t.Fatal(err)
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}
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_, _, release, err := session.NewView(ctx, "diagnostics_test", span.URIFromPath(folder), options)
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release()
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if err != nil {
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t.Fatal(err)
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}
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after, err := ioutil.ReadFile(filepath.Join(folder, "go.mod"))
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if err != nil {
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t.Fatal(err)
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}
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if string(before) != string(after) {
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t.Errorf("the real go.mod file was changed even when tempModfile=true")
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}
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}
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