Test boot_partition with missing or non-numeric number argument.

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

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

// No args at all
let r1 = api.boot_partition.call();
printf("no_args: %s\n", r1.error);

// Empty object
let r2 = api.boot_partition.call({ args: {} });
printf("empty: %s\n", r2.error);

// Non-numeric
let r3 = api.boot_partition.call({ args: { number: "abc" } });
printf("abc: %s\n", r3.error);
-- End --

-- Expect stdout --
no_args: INVALID_ARG
empty: INVALID_ARG
abc: INVALID_ARG
-- End --