tailscale/version/version_test.go

43 lines
1.1 KiB
Go

// Copyright (c) 2022 Tailscale Inc & 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 version
import (
"bytes"
"os"
"testing"
ts "tailscale.com"
)
func TestAlpineTag(t *testing.T) {
if tag := readAlpineTag(t, "../Dockerfile.base"); tag == "" {
t.Fatal(`"FROM alpine:" not found in Dockerfile.base`)
} else if tag != ts.AlpineDockerTag {
t.Errorf("alpine version mismatch: Dockerfile.base has %q; ALPINE.txt has %q", tag, ts.AlpineDockerTag)
}
if tag := readAlpineTag(t, "../Dockerfile"); tag == "" {
t.Fatal(`"FROM alpine:" not found in Dockerfile`)
} else if tag != ts.AlpineDockerTag {
t.Errorf("alpine version mismatch: Dockerfile has %q; ALPINE.txt has %q", tag, ts.AlpineDockerTag)
}
}
func readAlpineTag(t *testing.T, file string) string {
f, err := os.ReadFile(file)
if err != nil {
t.Fatal(err)
}
for _, line := range bytes.Split(f, []byte{'\n'}) {
line = bytes.TrimSpace(line)
_, suf, ok := bytes.Cut(line, []byte("FROM alpine:"))
if !ok {
continue
}
return string(suf)
}
return ""
}