Test obtain_device_info for Linksys E7350 with partition 1 active.
Uses fw_printenv params and kernel label fallback for alt partition.

-- File fs/open~_tmp_sysinfo_board_name.txt --
linksys,e7350
-- End --

-- File fs/popen~fw_printenv_-n_bootimage_2_dev_null.txt --
1
-- End --

-- File fs/popen~_etc_os-release_2_dev_null_echo_OPENWRT_RELEASE_2_dev_null.txt --
OpenWrt SNAPSHOT r28105-abcdef0123
-- End --

-- File fs/open~_proc_version.txt --
Linux version 6.6.63 (builder@buildhost) (aarch64-openwrt-linux-musl-gcc) #0
-- End --

-- File fs/popen~dd_if_dev_mtd3_bs_1_skip_192_count_64.txt --
Linux version 6.6.63 OpenWrt
-- End --

-- File fs/popen~dd_if_dev_mtd6_bs_1_skip_192_count_64.txt --
Linux version 6.6.50 OpenWrt
-- End --

-- Testcase --
let ar = require('advanced_reboot');
let api = ar["luci.advanced-reboot"];
let result = api.obtain_device_info.call();

// Verify device info
printf("vendor: %s\n", result.device.vendor);
printf("model: %s\n", result.device.model);
printf("board: %s\n", result.device.board);
printf("active: %s\n", result.device.partition_active);
printf("partitions: %d\n", length(result.partitions));

// Partition 1 (current)
let p1 = result.partitions[0];
printf("p1: number=%s label=%s os=%s\n", p1.number, p1.label, p1.os);

// Partition 2 (alternate — label from dd fallback)
let p2 = result.partitions[1];
printf("p2: number=%s label=%s os=%s\n", p2.number, p2.label, p2.os);
-- End --

-- Expect stdout --
vendor: Linksys
model: E7350
board: linksys,e7350
active: 1
partitions: 2
p1: number=1 label=OpenWrt SNAPSHOT r28105-abcdef0123 os=6.6.63
p2: number=2 label=OpenWrt os=6.6.50
-- End --