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dfhack/ci/test.lua

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-- DFHack developer test harness
--@ module = true
local expect = require('test_util.expect')
local helpdb = require('helpdb')
local json = require('json')
local mock = require('test_util.mock')
local script = require('gui.script')
local utils = require('utils')
local help_text =
[====[
test
====
Tags: dev
Command: "test"
Run DFHack regression tests.
Discover DFHack functionality that has broken due to recent changes in DF or DFHack.
Usage
-----
test [<options>] [<done_command>]
If a done_command is specified, it will be run after the tests complete.
Options
-------
-d, --test_dir specifies which directory to look in for tests. defaults to
the "hack/scripts/test" folder in your DF installation.
-m, --modes only run tests in the given comma separated list of modes.
see the next section for a list of valid modes. if not
specified, the tests are not filtered by modes.
-r, --resume skip tests that have already been run. remove the
test_status.json file to reset the record.
-s, --save_dir the save folder to load for "fortress" mode tests. this
save is only loaded if a fort is not already loaded when
a "fortress" mode test is run. if not specified, defaults to
'region1'.
-t, --tests only run tests that match one of the comma separated list of
patterns. if not specified, no tests are filtered and all tessts
are run.
Modes
-----
none the test can be run on any screen
title the test must be run on the DF title screen. note that if the game
has a map loaded, "title" mode tests cannot be run
fortress the test must be run while a map is loaded. if the game is
currently on the title screen, the save specified by the save_dir
parameter will be loaded.
Examples
--------
test runs all tests
test -r runs all tests that haven't been run before
test -m none runs tests that don't need the game to be in a
specific mode
test -t quickfort runs quickfort tests
test -d /path/to/dfhack-scripts/repo/test
runs tests in your dev scripts repo
Default values for the options may be set in a file named test_config.json in
your DF folder. Options with comma-separated values should be written as json
arrays. For example:
{
"test_dir": "/home/myk/src/dfhack-scripts/test",
"modes": [ "none" ],
"tests": [ "quickfort", "devel" ],
"done_command": "devel/luacov -c"
}
]====]
local CONFIG_FILE = 'test_config.json'
local STATUS_FILE = 'test_status.json'
local DF_STATE_FILE = 'test_df_state.json'
local TestStatus = {
PENDING = 'pending',
PASSED = 'passed',
FAILED = 'failed',
}
local function delay(frames)
frames = frames or 1
script.sleep(frames, 'frames')
end
-- Will call the predicate_fn every frame until it returns true. If it fails to
-- return true before timeout_frames have elapsed, throws an error. If
-- timeout_frames is not specified, defaults to 100.
local function delay_until(predicate_fn, timeout_frames)
timeout_frames = tonumber(timeout_frames) or 100
repeat
delay()
if predicate_fn() then return end
timeout_frames = timeout_frames - 1
until timeout_frames < 0
error('timed out while waiting for predicate to return true')
end
local function clean_require(module)
-- wrapper around require() - forces a clean load of every module to ensure
-- that modules checking for dfhack.internal.IN_TEST at load time behave
-- properly
if package.loaded[module] then
reload(module)
end
return require(module)
end
-- clean_run_script and clean_reqscript force a clean load of scripts directly
-- or indirectly included from the test file. we use our own scripts table
-- instead of the one in dfhack.internal so we don't affect the state scripts
-- that are used outside the test harness.
local test_scripts = {}
local test_envvars = {}
-- clean_run_script is accessed via the dfhack table, not directly from the env.
-- therefore we use this function in wrap_test() below and not in test_envvars.
local function clean_run_script(name, ...)
return dfhack.run_script_with_env(
test_envvars,
name,
{scripts=test_scripts},
...)
end
local function clean_reqscript(name)
local path = dfhack.findScript(name)
if test_scripts[path] then return test_scripts[path].env end
local _, env = dfhack.run_script_with_env(
test_envvars,
name,
{
scripts=test_scripts,
module=true,
module_strict=true
})
return env
end
test_envvars.require = clean_require
test_envvars.reqscript = clean_reqscript
local function is_title_screen(scr)
scr = scr or dfhack.gui.getCurViewscreen()
return df.viewscreen_titlest:is_instance(scr)
end
-- This only handles pre-fortress-load screens. It will time out if the player
-- has already loaded a fortress or is in any screen that can't get to the title
-- screen by sending ESC keys.
local function ensure_title_screen()
for i = 1, 100 do
local scr = dfhack.gui.getCurViewscreen()
if df.viewscreen_initial_prepst:is_instance(scr) then
delay(10000)
elseif is_title_screen(scr) then
print('Found title screen')
return
else
scr:feed_key(df.interface_key.LEAVESCREEN)
delay(10)
end
if i % 10 == 0 then print('Looking for title screen...') end
end
qerror(string.format('Could not find title screen (timed out at %s)',
dfhack.gui.getCurFocus(true)[1]))
end
local function is_fortress(focus_string)
focus_string = focus_string or dfhack.gui.getCurFocus(true)
return focus_string == 'dwarfmode/Default'
end
-- Requires that a fortress game is already loaded or is ready to be loaded via
-- the "Continue Playing" option in the title screen. Otherwise the function
-- will time out and/or exit with error.
local function ensure_fortress(config)
local focus_string = dfhack.gui.getCurFocus(true)
for screen_timeout = 1,10 do
if is_fortress(focus_string) then
print('Loaded fortress map')
-- pause the game (if it's not already paused)
dfhack.gui.resetDwarfmodeView(true)
return
end
local scr = dfhack.gui.getCurViewscreen(true)
if focus_string == 'title' or
focus_string == 'dfhack/lua/load_screen' then
-- qerror()'s on falure
dfhack.run_script('load-save', config.save_dir)
elseif focus_string ~= 'loadgame' then
-- if we're not actively loading a game, hope we're in
-- a screen where hitting ESC will get us to the game map
-- or the title screen
scr:feed_key(df.interface_key.LEAVESCREEN)
end
-- wait for current screen to change
local prev_focus_string = focus_string
for frame_timeout = 1,100 do
delay(10)
focus_string = dfhack.gui.getCurFocus(true)
if focus_string ~= prev_focus_string then
goto next_screen
end
if frame_timeout % 10 == 0 then
print(string.format(
'Loading fortress (currently at screen: %s)',
focus_string))
end
end
print('Timed out waiting for screen to change')
break
::next_screen::
end
qerror(string.format('Could not load fortress (timed out at %s)',
focus_string))
end
local MODES = {
none = {order=1, detect=function() return true end},
title = {order=2, detect=is_title_screen, navigate=ensure_title_screen},
fortress = {order=3, detect=is_fortress, navigate=ensure_fortress},
}
local function load_test_config(config_file)
local config = {}
if dfhack.filesystem.isfile(config_file) then
config = json.decode_file(config_file)
end
if not config.test_dir then
config.test_dir = dfhack.getHackPath() .. 'scripts/test'
end
if not config.save_dir then
config.save_dir = 'region1'
end
return config
end
local function TestTable()
local inner = utils.OrderedTable()
local meta = copyall(getmetatable(inner))
function meta:__newindex(k, v)
if inner[k] then
error('Attempt to overwrite existing test: ' .. k)
elseif type(v) ~= 'function' then
error('Attempt to define test as non-function: ' .. k .. ' = ' .. tostring(v))
else
inner[k] = v
end
end
local self = {}
setmetatable(self, meta)
return self
end
-- we have to save and use the original dfhack.printerr here so our test harness
-- output doesn't trigger its own dfhack.printerr usage detection (see
-- detect_printerr below)
local orig_printerr = dfhack.printerr
local function wrap_expect(func, private, path)
return function(...)
private.checks = private.checks + 1
local ret = {func(...)}
local ok = table.remove(ret, 1)
if ok then
private.checks_ok = private.checks_ok + 1
return
end
local msg = ''
for _, part in pairs(ret) do
if part then
msg = msg .. ': ' .. tostring(part)
end
end
msg = msg:sub(3) -- strip leading ': '
orig_printerr('Check failed! ' .. (msg or '(no message)'))
-- Generate a stack trace with all function calls in the same file as the caller to expect.*()
-- (this produces better stack traces when using helpers in tests)
local frame = 2
local caller_src
while true do
info = debug.getinfo(frame)
if not info then break end
if not caller_src then
caller_src = info.short_src
end
-- Skip any frames corresponding to C calls, or Lua functions defined in another file
-- these could include pcall(), with_finalize(), etc.
if info.what == 'Lua' and (info.short_src == caller_src or info.short_src == path) then
orig_printerr((' at %s:%d'):format(info.short_src, info.currentline))
end
frame = frame + 1
end
print('')
end
end
local function build_test_env(path)
local env = {
test = TestTable(),
-- config values can be overridden in the test file to define
-- requirements for the tests in that file
config = {
-- override with the required game mode
mode = 'none',
-- override with a test wrapper function with common setup and
-- teardown for every test, if needed. for example:
-- local function test_wrapper(test_fn)
-- mock.patch(dfhack.filesystem,
-- 'listdir_recursive',
-- mock.func({}),
-- test_fn)
-- end
-- config.wrapper = test_wrapper
wrapper = nil,
},
expect = {},
mock = mock,
delay = delay,
delay_until = delay_until,
require = clean_require,
reqscript = clean_reqscript,
}
local private = {
checks = 0,
checks_ok = 0,
}
for name, func in pairs(expect) do
env.expect[name] = wrap_expect(func, private, path)
end
setmetatable(env, {__index = _G})
return env, private
end
local function get_test_files(test_dir)
local files = {}
print('Loading tests from ' .. test_dir)
for _, entry in ipairs(dfhack.filesystem.listdir_recursive(test_dir)) do
if not entry.isdir then
table.insert(files, entry.path)
end
end
table.sort(files)
return files
end
local function load_test_status()
if dfhack.filesystem.isfile(STATUS_FILE) then
return json.decode_file(STATUS_FILE)
end
end
local function save_test_status(status)
json.encode_file(status, STATUS_FILE)
end
local function finish_tests(done_command)
dfhack.internal.IN_TEST = false
if done_command and #done_command > 0 then
dfhack.run_command(done_command)
end
end
local function load_tests(file, tests)
local short_filename = file:sub((file:find('test') or -4) + 5, -1)
print('Loading file: ' .. short_filename)
local env, env_private = build_test_env(file)
local code, err = loadfile(file, 't', env)
if not code then
dfhack.printerr('Failed to load file: ' .. tostring(err))
return false
end
dfhack.internal.IN_TEST = true
local ok, err = dfhack.pcall(code)
dfhack.internal.IN_TEST = false
if not ok then
dfhack.printerr('Error when running file: ' .. tostring(err))
return false
end
if not MODES[env.config.mode] then
dfhack.printerr('Invalid config.mode: ' .. tostring(env.config.mode))
return false
end
if not env.config.target then
dfhack.printerr('Skipping tests for unspecified target in ' .. file)
return true -- TODO: change to false once existing tests have targets specified
end
local targets = type(env.config.target) == 'table' and env.config.target or {env.config.target}
for _,target in ipairs(targets) do
if target == 'core' then goto continue end
if type(target) ~= 'string' or not helpdb.is_entry(target) or
helpdb.get_entry_tags(target).unavailable
then
dfhack.printerr('Skipping tests for unavailable target: ' .. target)
return true
end
::continue::
end
for name, test_func in pairs(env.test) do
if env.config.wrapper then
local fn = test_func
test_func = function() env.config.wrapper(fn) end
end
local test_data = {
full_name = short_filename .. ':' .. name,
func = test_func,
private = env_private,
config = env.config,
}
test_data.name = test_data.full_name:gsub('test/', ''):gsub('.lua', '')
table.insert(tests, test_data)
end
return true
end
local function sort_tests(tests)
-- to make sort stable
local test_index = utils.invert(tests)
table.sort(tests, function(a, b)
if a.config.mode ~= b.config.mode then
return MODES[a.config.mode].order < MODES[b.config.mode].order
end
return test_index[a] < test_index[b]
end)
end
local function wrap_test(func)
local saved_printerr = dfhack.printerr
local printerr_called = false
local printerr_wrapper = function(msg)
if msg == nil then return end
saved_printerr(msg)
printerr_called = true
end
return mock.patch(
{
{dfhack, 'printerr', printerr_wrapper},
{dfhack, 'run_script', clean_run_script},
{dfhack, 'reqscript', clean_reqscript},
},
function()
local ok, err = dfhack.pcall(func)
if printerr_called then
return false,
"dfhack.printerr was called outside of" ..
" expect.printerr_match(). please wrap your test" ..
" with expect.printerr_match()."
end
return ok, err
end
)
end
local function get_elapsed_str(elapsed)
return elapsed < 1 and "<1" or tostring(elapsed)
end
local function run_test(test, status, counts)
test.private.checks = 0
test.private.checks_ok = 0
counts.tests = counts.tests + 1
dfhack.internal.IN_TEST = true
local start_ms = dfhack.getTickCount()
local ok, err = wrap_test(test.func)
local elapsed_ms = dfhack.getTickCount() - start_ms
dfhack.internal.IN_TEST = false
local passed = false
if not ok then
dfhack.printerr('error: ' .. tostring(err) .. '\n')
dfhack.printerr('test errored: ' .. test.name)
elseif test.private.checks ~= test.private.checks_ok then
dfhack.printerr('test failed: ' .. test.name)
else
local elapsed_str = get_elapsed_str(elapsed_ms)
print(('test passed in %s ms: %s'):format(elapsed_str, test.name))
passed = true
counts.tests_ok = counts.tests_ok + 1
end
counts.checks = counts.checks + (tonumber(test.private.checks) or 0)
counts.checks_ok = counts.checks_ok + (tonumber(test.private.checks_ok) or 0)
return passed
end
local function get_tests(test_files, counts)
local tests = {}
for _, file in ipairs(test_files) do
if not load_tests(file, tests) then
counts.file_errors = counts.file_errors + 1
end
end
return tests
end
local function filter_tests(tests, config)
if config.tests or config.modes then
for _,filter in ipairs({{'tests', 'name pattern'},{'modes', 'mode'}}) do
if config[filter[1]] and #config[filter[1]] > 0 then
print(string.format('Filtering tests by %s:', filter[2]))
for _,v in ipairs(config[filter[1]]) do
print(string.format(' %s', v))
end
end
end
local orig_length = #tests
for i = #tests, 1, -1 do
local remove = false
if config.modes then
remove = true
-- allow test if it matches any of the given modes
for _, mode in pairs(config.modes) do
if tests[i].config.mode == mode then
remove = false
break
end
end
end
if config.tests and not remove then
remove = true
-- allow test if it matches any of the given patterns
for _, pattern in pairs(config.tests) do
if tests[i].name:match(pattern) then
remove = false
break
end
end
end
if remove then table.remove(tests, i) end
end
print('Selected tests: ' .. #tests .. '/' .. orig_length)
end
local status = {}
if config.resume then
status = load_test_status() or status
for i = #tests, 1, -1 do
local test = tests[i]
if not status[test.full_name] then
status[test.full_name] = TestStatus.PENDING
elseif status[test.full_name] ~= TestStatus.PENDING then
print(('skipping test: %s: state = %s'):format(
test.name, status[test.full_name]))
table.remove(tests, i)
end
end
end
sort_tests(tests)
return status
end
local function run_tests(tests, status, counts, config)
print(('Running %d tests'):format(#tests))
local start_ms = dfhack.getTickCount()
local num_skipped = 0
for _, test in pairs(tests) do
if MODES[test.config.mode].failed then
num_skipped = num_skipped + 1
goto skip
end
if not MODES[test.config.mode].detect() then
print(('Switching to %s mode for test: %s'):format(test.config.mode, test.name))
local ok, err = pcall(MODES[test.config.mode].navigate, config)
if not ok then
MODES[test.config.mode].failed = true
dfhack.printerr(tostring(err))
num_skipped = num_skipped + 1
goto skip
end
end
if run_test(test, status, counts) then
status[test.full_name] = TestStatus.PASSED
else
status[test.full_name] = TestStatus.FAILED
end
save_test_status(status)
::skip::
end
local elapsed_ms = dfhack.getTickCount() - start_ms
local function print_summary_line(ok, message)
local print_fn = print
if not ok then
status['*'] = TestStatus.FAILED
print_fn = dfhack.printerr
end
print_fn(' ' .. message)
end
status['*'] = status['*'] or TestStatus.PASSED
print(('\nTests completed in %s ms:'):format(get_elapsed_str(elapsed_ms)))
print_summary_line(counts.tests_ok == counts.tests,
('%d/%d tests passed'):format(counts.tests_ok, counts.tests))
print_summary_line(counts.checks_ok == counts.checks,
('%d/%d checks passed'):format(counts.checks_ok, counts.checks))
print_summary_line(counts.file_errors == 0,
('%d test files failed to load'):format(counts.file_errors))
print_summary_line(num_skipped == 0,
('%d tests in unreachable modes'):format(num_skipped))
save_test_status(status)
end
local function dump_df_state()
local state = {
enabler = {
fps = df.global.enabler.fps,
gfps = df.global.enabler.gfps,
fullscreen_state = df.global.enabler.fullscreen_state.whole,
},
gps = {
dimx = df.global.gps.dimx,
dimy = df.global.gps.dimy,
display_frames = df.global.gps.display_frames,
},
}
json.encode_file(state, DF_STATE_FILE)
print('DF global state: ' .. json.encode(state, {pretty = false}))
end
local function main(args)
local help, resume, test_dir, mode_filter, save_dir, test_filter =
false, false, nil, {}, nil, {}
local other_args = utils.processArgsGetopt(args, {
{'h', 'help', handler=function() help = true end},
{'d', 'test_dir', hasArg=true,
handler=function(arg) test_dir = arg end},
{'m', 'modes', hasArg=true,
handler=function(arg) mode_filter = utils.split_string(arg, ',') end},
{'r', 'resume', handler=function() resume = true end},
{'s', 'save_dir', hasArg=true,
handler=function(arg) save_dir = arg end},
{'t', 'tests', hasArg=true,
handler=function(arg) test_filter = utils.split_string(arg, ',') end},
})
if help then print(help_text) return end
local done_command = table.concat(other_args, ' ')
local config = load_test_config(CONFIG_FILE)
-- override config with any params specified on the commandline
if test_dir then config.test_dir = test_dir end
if resume then config.resume = true end
if save_dir then config.save_dir = save_dir end
if #mode_filter > 0 then config.modes = mode_filter end
if #test_filter > 0 then config.tests = test_filter end
if #done_command > 0 then config.done_command = done_command end
if not dfhack.filesystem.isdir(config.test_dir) then
qerror(('Invalid test folder: "%s"'):format(config.test_dir))
end
local counts = {
tests = 0,
tests_ok = 0,
checks = 0,
checks_ok = 0,
file_errors = 0,
}
dump_df_state()
local test_files = get_test_files(config.test_dir)
local tests = get_tests(test_files, counts)
local status = filter_tests(tests, config)
script.start(function()
dfhack.call_with_finalizer(1, true,
finish_tests, config.done_command,
run_tests, tests, status, counts, config)
end)
end
if not dfhack_flags.module then
main({...})
end
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