tailscale/tstest/kernel_linux_test.go
Avery Pennarun 621dc9cf1b tstest: fix kernel version parsing for Debian-style version strings
The kernel version parser used strings.Cut with "-" to handle versions
like "5.4.0-76-generic", but Debian uses "+" in versions like
"6.12.41+deb13-amd64".

Use strings.IndexAny to find the first "-" or "+" and truncate there.

Fixes TestKernelVersion on Debian systems.

Fixes #19395

Change-Id: I70e5f95682d54baf908e51f9f4b51c130b00aaaa
Co-Authored-By: Brad Fitzpatrick <bradfitz@tailscale.com>
Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>
2026-04-14 07:11:44 -07:00

35 lines
869 B
Go

// Copyright (c) Tailscale Inc & contributors
// SPDX-License-Identifier: BSD-3-Clause
//go:build linux
package tstest
import "testing"
func TestParseKernelVersion(t *testing.T) {
tests := []struct {
release string
major, minor, patch int
}{
{"5.15.0-76-generic", 5, 15, 0},
{"6.12.73+deb13-amd64", 6, 12, 73},
{"6.1.0-18-amd64", 6, 1, 0},
{"5.4.0", 5, 4, 0},
{"6.8.12", 6, 8, 12},
{"4.19.0+1", 4, 19, 0},
{"6.12.41+deb13-amd64", 6, 12, 41},
{"", 0, 0, 0},
{"not-a-version", 0, 0, 0},
{"1.2", 0, 0, 0},
{"a.b.c", 0, 0, 0},
}
for _, tt := range tests {
major, minor, patch := parseKernelVersion(tt.release)
if major != tt.major || minor != tt.minor || patch != tt.patch {
t.Errorf("parseKernelVersion(%q) = (%d, %d, %d), want (%d, %d, %d)",
tt.release, major, minor, patch, tt.major, tt.minor, tt.patch)
}
}
}