config.target = 'core'

local function with_temp_global_address(name, addr, callback, ...)

dfhack.call_with_finalizer(2, true,

dfhack.internal.setAddress, name, dfhack.internal.getAddress(name),

function(...)

dfhack.internal.setAddress(name, addr)

callback(...)

end, ...)

end

function test.unknown_global_address()

expect.ne(dfhack.internal.getAddress('army_next_id'), 0)

local old_id = df.global.army_next_id

with_temp_global_address('army_next_id', 0, function()

expect.error_match('Cannot read field global.army_next_id: global address not known.', function()

local _ = df.global.army_next_id

end)

expect.error_match('Cannot write field global.army_next_id: global address not known.', function()

df.global.army_next_id = old_id

end)

expect.error_match('Cannot reference field global.army_next_id: global address not known.', function()

local _ = df.global:_field('army_next_id')

end)

end)

expect.gt(dfhack.internal.getAddress('army_next_id'), 0)

expect.eq(df.global.army_next_id, old_id)

end