fix: preserve subscription geodata settings when merging Clash config

tests/clash_geodata.sh

@@ -0,0 +1,93 @@
+#!/bin/sh
+# Run with sh tests/clash_geodata.sh [path/to/clash_modify.sh].
+set -e
+script=${1:-$(dirname "$0")/../scripts/starts/clash_modify.sh}
+. "$script"
+test_dir=$(mktemp -d)
+trap 'rm -rf "$test_dir"' EXIT HUP INT TERM
+
+setup() {
+    CRASHDIR="$test_dir/$1"
+    TMPDIR="$CRASHDIR/tmp"
+    BINDIR="$CRASHDIR/bin"
+    mkdir -p "$CRASHDIR/yamls" "$TMPDIR" "$BINDIR"
+    core_config="$CRASHDIR/yamls/config.yaml"
+    dns_mod=redir_host
+    yaml_char='rules proxy-groups'
+    yaml_user= yaml_others= yaml_dns= yaml_hosts=
+    printf 'mode: Rule\n' >"$TMPDIR/set.yaml"
+    printf ' - GEOSITE,GOOGLE,DIRECT\n' >"$TMPDIR/rules.yaml"
+    : >"$TMPDIR/proxy-groups.yaml"
+    cat >"$core_config" <<'EOF'
+geodata-mode: true
+geodata-loader: memconservative
+geosite-matcher: succinct
+geo-auto-update: true
+geo-update-interval: 24
+geox-url:
+  geoip: https://example.invalid/geoip.dat
+  geosite: >-
+    https://example.invalid/geosite.dat
+  mmdb: https://example.invalid/Country.mmdb
+rules:
+ - GEOSITE,GOOGLE,DIRECT
+mixed-port: 1234
+EOF
+}
+
+assert_line() {
+    grep -qFx -- "$1" "$TMPDIR/config.yaml" || {
+        echo "Missing expected line: $1" >&2
+        exit 1
+    }
+}
+
+setup inherited
+merger_yaml
+assert_line 'geodata-mode: true'
+assert_line 'geodata-loader: memconservative'
+assert_line 'geosite-matcher: succinct'
+assert_line 'geo-auto-update: true'
+assert_line 'geo-update-interval: 24'
+assert_line '    https://example.invalid/geosite.dat'
+[ "$(grep -c '^rules:' "$TMPDIR/config.yaml")" = 1 ]
+! grep -q '^mixed-port: 1234' "$TMPDIR/config.yaml"
+finalize_clash_yaml
+[ ! -e "$TMPDIR/geodata.yaml" ]
+[ ! -e "$TMPDIR/geodata_base.yaml" ]
+
+setup overrides
+printf 'geodata-mode: false\n' >"$CRASHDIR/yamls/user.yaml"
+printf 'geox-url: {geosite: https://override.invalid/geosite.dat}\n' >"$CRASHDIR/yamls/others.yaml"
+merger_yaml
+assert_line 'geodata-mode: false'
+assert_line 'geox-url: {geosite: https://override.invalid/geosite.dat}'
+[ "$(grep -c '^geodata-mode:' "$TMPDIR/config.yaml")" = 1 ]
+[ "$(grep -c '^geox-url:' "$TMPDIR/config.yaml")" = 1 ]
+! grep -q 'example.invalid' "$TMPDIR/config.yaml"
+
+# A rejected custom configuration must fall back to the subscription settings.
+printf '#!/bin/sh\nexit 1\n' >"$TMPDIR/CrashCore"
+chmod +x "$TMPDIR/CrashCore"
+logger() { :; }
+set +e
+test_yaml
+set -e
+assert_line 'geodata-mode: true'
+assert_line '    https://example.invalid/geosite.dat'
+[ "$(grep -c '^geox-url:' "$TMPDIR/config.yaml")" = 1 ]
+! grep -q 'override.invalid' "$TMPDIR/config.yaml"
+
+setup inline
+printf 'geox-url: {geosite: https://inline.invalid/geosite.dat}\ngeo-auto-update: false\n---\nmixed-port: 1234\n' >"$core_config"
+merger_yaml
+assert_line 'geox-url: {geosite: https://inline.invalid/geosite.dat}'
+assert_line 'geo-auto-update: false'
+! grep -qE '^---|^mixed-port: 1234' "$TMPDIR/config.yaml"
+
+setup absent
+printf 'rules:\n - MATCH,DIRECT\n' >"$core_config"
+merger_yaml
+! grep -qE '^geo(data|site|x|-)' "$TMPDIR/config.yaml"
+assert_line 'mode: Rule'
+echo 'PASS: inherited geodata, overrides, fallback, inline maps, cleanup and absent settings'