improve version and mirror updating

tests/utils.bats

@@ -258,3 +258,50 @@ pacman_log() {
   run initramfs_build_failed
   [ "$status" -eq 0 ]
 }
+
+# --- mirrors ----------------------------------------------------------------
+
+setup_mirrors() {
+  export MIRRORLIST="$BATS_TEST_TMPDIR/mirrorlist"
+  cat > "$MIRRORLIST" << 'LIST'
+## Worldwide
+#Server = https://commented.example/archlinux/$repo/os/$arch
+Server = https://first.example/archlinux/$repo/os/$arch
+Server = https://second.example/$repo/os/$arch
+LIST
+  # lastsync is $SYNCED, a Unix time
+  stub curl 'echo "$SYNCED"; [ -n "$SYNCED" ]'
+  source "$REPO/utils.sh"
+}
+
+@test "first_mirror is the first Server line that isn't commented out" {
+  setup_mirrors
+  [ "$(first_mirror)" = "https://first.example/archlinux" ]
+}
+
+@test "mirror_age_hours reads the first mirror's lastsync" {
+  setup_mirrors
+  export SYNCED="$(( $(date +%s) - 30 * 3600 ))"
+  run mirror_age_hours
+  [ "$status" -eq 0 ]
+  [ "$output" = 30 ]
+  called curl -sf --max-time 10 https://first.example/archlinux/lastsync
+}
+
+@test "mirror_age_hours fails when the mirror can't be reached or has no lastsync" {
+  setup_mirrors
+  export SYNCED=""
+  run mirror_age_hours
+  [ "$status" -ne 0 ]
+  export SYNCED="<html>Not Found</html>"
+  run mirror_age_hours
+  [ "$status" -ne 0 ]
+}
+
+@test "mirror_age_hours fails without a mirrorlist" {
+  setup_mirrors
+  rm "$MIRRORLIST"
+  run mirror_age_hours
+  [ "$status" -ne 0 ]
+  not_called curl
+}

tests/version.bats

@@ -22,6 +22,10 @@ setup() {
   stub pacman 'grep "^$2 " <<< "$INSTALLED" || exit 1'
   stub checkupdates 'printf "%s" "$PENDING"; [ -n "$PENDING" ] || exit 2'
   export INSTALLED="mesa 1:26.2.6-1" PENDING=""
+  # The mirror synced $SYNCED_HOURS ago (an hour by default)
+  export MIRRORLIST="$BATS_TEST_TMPDIR/mirrorlist" SYNCED_HOURS=1
+  echo 'Server = https://mirror.example/archlinux/$repo/os/$arch' > "$MIRRORLIST"
+  stub curl 'echo "$(( $(date +%s) - SYNCED_HOURS * 3600 ))"'
 }
 
 @test "version shows the kernel and Mesa, with nothing newer to install" {
@@ -31,6 +35,7 @@ setup() {
   [[ "$output" == *"Kernel       9.9.1-arch1-1 (newer kernel installed, reboot to use it)"$'\n'* ]]
   [[ "$output" == *"Video driver Mesa 26.2.6"$'\n'* ]]
   [[ "$output" != *"is available"* ]]
+  [[ "$output" != *"mirror"* ]]
 }
 
 @test "version suggests update for a newer kernel and video driver" {
@@ -68,3 +73,19 @@ setup() {
   [[ "$output" == *"Kernel       9.9.1-arch1-1"* ]]
   [[ "$output" != *"is available"* ]]
 }
+
+@test "version warns when the package mirror is behind Arch" {
+  export SYNCED_HOURS=73
+  run bash "$CD/version"
+  [ "$status" -eq 0 ]
+  [[ "$output" == *"Your package mirror (https://mirror.example/archlinux) last synced with Arch 3 days ago"* ]]
+  [[ "$output" == *"Run update"* ]]
+}
+
+@test "version doesn't warn about a mirror it can't reach" {
+  rm "$STUB_BIN/curl"
+  stub curl 'exit 7'
+  run bash "$CD/version"
+  [ "$status" -eq 0 ]
+  [[ "$output" != *"mirror"* ]]
+}