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https://github.com/golang/go
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64a0f23fc3
This change adds support for testing go.mod files within packagestest. Primarily, if there are markers in the go.mod file, this will copy the contents to a temporary file, build the modcache, then set the contents back. Updates golang/go#36091 Change-Id: Icb707906eb7fc9e4a06fe043f94f34d9223d84c9 Reviewed-on: https://go-review.googlesource.com/c/tools/+/216839 Run-TryBot: Rohan Challa <rohan@golang.org> 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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ctx := tests.Context(t)
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cache := cache.New(nil)
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session := cache.NewSession()
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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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_, snapshot, err := session.NewView(ctx, "diagnostics_test", span.FileURI(folder), options)
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if err != nil {
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t.Fatal(err)
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}
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if _, t := snapshot.View().ModFiles(); t == "" {
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return
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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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