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4bda41e701
So things like #5660 don't happen in the future. Change-Id: I01234f241e297d5b7bdd18da1bb3cc5420ad2225 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
35 lines
800 B
Go
35 lines
800 B
Go
// Copyright (c) 2022 Tailscale Inc & 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 tailscaleroot
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import (
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"fmt"
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"os"
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"regexp"
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"strings"
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"testing"
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)
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func TestDockerfileVersion(t *testing.T) {
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goMod, err := os.ReadFile("go.mod")
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if err != nil {
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t.Fatal(err)
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}
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m := regexp.MustCompile(`(?m)^go (\d\.\d+)\r?$`).FindStringSubmatch(string(goMod))
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if m == nil {
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t.Fatalf("didn't find go version in go.mod")
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}
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goVersion := m[1]
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dockerFile, err := os.ReadFile("Dockerfile")
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if err != nil {
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t.Fatal(err)
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}
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wantSub := fmt.Sprintf("FROM golang:%s-alpine AS build-env", goVersion)
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if !strings.Contains(string(dockerFile), wantSub) {
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t.Errorf("didn't find %q in Dockerfile", wantSub)
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}
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}
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