function test.index_name() for _, k in ipairs(df.units_other_id) do expect.eq(df.global.world.units.other[k]._kind, 'container') end end function test.index_name_bad() expect.error_match('not found.$', function() expect.eq(df.global.world.units.other.SOME_FAKE_NAME, 'container') end) end function test.index_id() for i in ipairs(df.units_other_id) do expect.eq(df.global.world.units.other[i]._kind, 'container') end end function test.index_id_bad() expect.error_match('Cannot read field', function() expect.eq(df.global.world.units.other[df.units_other_id._first_item - 1], 'container') end) expect.error_match('Cannot read field', function() expect.eq(df.global.world.units.other[df.units_other_id._last_item + 1], 'container') end) end