43 lines
1.1 KiB
Go
43 lines
1.1 KiB
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 version
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import (
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"bytes"
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"os"
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"testing"
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ts "tailscale.com"
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)
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func TestAlpineTag(t *testing.T) {
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if tag := readAlpineTag(t, "../Dockerfile.base"); tag == "" {
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t.Fatal(`"FROM alpine:" not found in Dockerfile.base`)
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} else if tag != ts.AlpineDockerTag {
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t.Errorf("alpine version mismatch: Dockerfile.base has %q; ALPINE.txt has %q", tag, ts.AlpineDockerTag)
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}
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if tag := readAlpineTag(t, "../Dockerfile"); tag == "" {
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t.Fatal(`"FROM alpine:" not found in Dockerfile`)
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} else if tag != ts.AlpineDockerTag {
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t.Errorf("alpine version mismatch: Dockerfile has %q; ALPINE.txt has %q", tag, ts.AlpineDockerTag)
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}
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}
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func readAlpineTag(t *testing.T, file string) string {
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f, err := os.ReadFile(file)
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if err != nil {
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t.Fatal(err)
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}
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for _, line := range bytes.Split(f, []byte{'\n'}) {
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line = bytes.TrimSpace(line)
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_, suf, ok := bytes.Cut(line, []byte("FROM alpine:"))
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if !ok {
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continue
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}
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return string(suf)
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}
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return ""
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}
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