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// Copyright (c) Tailscale Inc & contributors
// SPDX-License-Identifier: BSD-3-Clause
package version_test
import (
"bytes"
"os"
"testing"
ts "tailscale.com"
"tailscale.com/version"
)
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.SplitSeq(f, []byte{'\n'}) {
line = bytes.TrimSpace(line)
_, suf, ok := bytes.Cut(line, []byte("FROM alpine:"))
if !ok {
continue
}
return string(suf)
}
return ""
}
func TestShortAllocs(t *testing.T) {
allocs := int(testing.AllocsPerRun(10000, func() {
_ = version.Short()
}))
if allocs > 0 {
t.Errorf("allocs = %v; want 0", allocs)
}
}
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