htop/test_spec.lua

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#!/usr/bin/env lua
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local VISUALDELAY = os.getenv("VISUALDELAY")
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local visual = VISUALDELAY or false
local visual_delay = VISUALDELAY and (tonumber(VISUALDELAY)) or 0.1
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local unistd = require("posix.unistd")
local time = require("posix.time")
local curses = require("posix.curses")
local rote = require("rote")
local rt = rote.RoteTerm(24, 80)
local function os_execread(cmd)
local fd = io.popen(cmd, "r")
local out = fd:read("*a")
fd:close()
return (out:gsub("\n$", ""))
end
local branch = os_execread("git branch | grep '*'"):sub(3)
print("Running in branch "..branch)
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os.execute("make coverage")
os.execute("rm -f *.gcda */*.gcda")
os.execute("rm -f coverage.info test.htoprc")
os.execute("rm -rf lcov")
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os.execute("killall htop")
os.execute("ps aux | grep '[s]leep 12345' | awk '{print $2}' | xargs kill 2> /dev/null")
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os.execute("cp ./default.htoprc ./test.htoprc")
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rt:forkPty("LC_ALL=C HTOPRC=./test.htoprc ./htop")
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local stdscr, term_win
-- Curses initalization needed even when not in visual mode
-- because luaposix only initializes KEY_* constants after initscr().
stdscr = curses.initscr()
if visual then
curses.echo(false)
curses.start_color()
curses.raw(true)
curses.halfdelay(1)
stdscr:keypad(true)
term_win = curses.newwin(24, 80, 0, 0)
local function makePair(foreground, background)
return background * 8 + 7 - foreground
end
-- initialize the color pairs the way rt:draw() expects it
for foreground = 0, 7 do
for background = 0, 7 do
if foreground ~= 7 or background ~= 0 then
local pair = makePair(foreground, background)
curses.init_pair(pair, foreground, background)
end
end
end
else
curses.endwin()
end
local function delay(t)
time.nanosleep({ tv_sec = math.floor(t), tv_nsec = (t - math.floor(t)) * 1000000000 })
end
local function show(key)
rt:update()
if visual then
rt:draw(term_win, 0, 0)
if key then
term_win:mvaddstr(0, 0, tostring(key))
end
term_win:refresh()
delay(visual_delay)
end
end
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local function send(key, times, quick)
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if times == 0 then return end
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for _ = 1, times or 1 do
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delay(0.003) -- 30ms delay to avoid clobbering Esc sequences
if type(key) == "string" then
for c in key:gmatch('.') do
rt:keyPress(string.byte(c))
end
else
rt:keyPress(key)
end
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if not quick then
show(key)
end
end
if quick then
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show(key)
end
end
local function string_at(x, y, len)
rt:update()
local out = {}
for i = 1, len do
out[#out+1] = rt:cellChar(y-1, x+i-2)
end
return table.concat(out)
end
local function is_string_at(x, y, str)
return string_at(x, y, #str) == str
end
local function check_string_at(x, y, str)
return { str, string_at(x, y, #str) }
end
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local ESC = "\27\27"
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time.nanosleep({ tv_sec = 0, tv_nsec = 150000000 }) -- give some time for htop to initialize.
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local y_panelhdr = (function()
for y = 1, 24 do
if is_string_at(3, y, "PID") then
return y
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end
end
end)() or 1
local x_metercol2 = (branch == "wip") and 41 or 43
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show()
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os.execute("sleep 12345 &")
local function terminated()
return not os.execute("ps aux | grep -q '\\./[h]top'")
end
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local function running_it(desc, fn)
it(desc, function()
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assert(not terminated())
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show()
fn()
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assert(not terminated())
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end)
end
local function check(t)
return t[1], t[2]
end
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local attrs = {
black_on_cyan = 6,
red_on_cyan = 22,
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white_on_black = 176,
yellow_on_black = 112,
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}
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local function find_selected_y(from)
rt:update()
for y = from or (y_panelhdr + 1), rt:rows() - 1 do
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local attr = rt:cellAttr(y-1, 1)
if attr == attrs.black_on_cyan then
return y
end
end
return y_panelhdr + 1
end
local function find_command_x()
for x = 1, 80 do
if is_string_at(x, y_panelhdr, "Command") then
return x
end
end
return 64
end
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local function set_display_option(n)
send("S")
send(curses.KEY_DOWN)
send(curses.KEY_RIGHT)
send(curses.KEY_DOWN, n)
send("\n")
send(curses.KEY_F10)
end
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describe("htop test suite", function()
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running_it("performs incremental filter", function()
send("\\")
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send("x\127bux\127sted") -- test backspace
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send("\n")
delay(0.2)
rt:update()
local pid = (" "..tostring(unistd.getpid())):sub(-5)
local ourpid = check_string_at(1, y_panelhdr + 1, pid)
send("\\")
send(ESC)
send(curses.KEY_F5)
send(curses.KEY_HOME)
delay(0.15)
rt:update()
local initpid = check_string_at(1, y_panelhdr + 1, " 1")
delay(0.15)
rt:update()
send(curses.KEY_F5)
assert.equal(check(ourpid))
assert.equal(check(initpid))
end)
running_it("performs incremental search", function()
send(curses.KEY_HOME)
send("/")
send("busted")
local attr = rt:cellAttr(rt:rows() - 1, 30)
send("\n")
delay(0.4)
local line = find_selected_y()
local pid = (" "..tostring(unistd.getpid())):sub(-5)
assert.equal(attr, attrs.black_on_cyan)
local ourpid = check_string_at(1, line, pid)
send(curses.KEY_HOME)
assert.equal(check(ourpid))
end)
running_it("kills a process", function()
send(curses.KEY_HOME)
send("\\")
send("sleep 12345")
local attr = rt:cellAttr(rt:rows() - 1, 30)
assert.equal(attr, attrs.black_on_cyan)
send("\n")
delay(0.3)
rt:update()
local col = find_command_x()
local procname = check_string_at(col, y_panelhdr + 1, "sleep 12345")
send("k")
send("\n")
send("\\")
send(ESC)
delay(0.3)
assert.equal(check(procname))
assert.not_equal((os.execute("ps aux | grep -q '[s]leep 12345'")), true)
end)
running_it("runs strace", function()
send(curses.KEY_HOME)
send("/")
send("busted")
send("\n")
send("s")
delay(1)
send(ESC)
end)
running_it("runs lsof", function()
send(curses.KEY_HOME)
send("/")
send("busted")
send("\n")
send("l")
delay(1)
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send(ESC)
end)
running_it("performs filtering in lsof", function()
send(curses.KEY_HOME)
send("/")
send("htop")
send("\n")
send("l")
send(curses.KEY_F4)
send("pipe")
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delay(1)
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local pipefd = check_string_at(1, 3, " 3")
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send(ESC)
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assert.equal(check(pipefd))
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end)
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running_it("performs search in lsof", function()
send(curses.KEY_HOME)
send("/")
send("htop")
send("\n")
send("l")
send(curses.KEY_F3)
send("pipe")
delay(1)
local line = find_selected_y(3)
local pipefd = check_string_at(1, line, " 3")
send(ESC)
assert.equal(check(pipefd))
end)
running_it("cycles through meter modes in the default meters", function()
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send("S")
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for _ = 1, 2 do
send(curses.KEY_RIGHT)
for _ = 1, 3 do
send("\n", 4)
send(curses.KEY_DOWN)
end
end
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send(ESC)
end)
running_it("show process of a user", function()
send(curses.KEY_F5)
send("u")
send(curses.KEY_DOWN)
delay(0.3)
rt:update()
local chosen = string_at(1, y_panelhdr + 2, 9)
send("\n")
send(curses.KEY_HOME)
delay(0.3)
rt:update()
local shown = string_at(7, y_panelhdr + 1, 9)
send("u")
send("\n")
send(curses.KEY_HOME)
delay(0.3)
rt:update()
local inituser = string_at(7, y_panelhdr + 1, 9)
send(curses.KEY_F5)
assert.equal(shown, chosen)
assert.equal(inituser, "root ")
end)
running_it("performs failing search", function()
send(curses.KEY_HOME)
send("/")
send("xxxxxxxxxx")
delay(0.3)
rt:update()
local attr = rt:cellAttr(rt:rows() - 1, 30)
assert.equal(attr, attrs.red_on_cyan)
send("\n")
end)
running_it("cycles through search", function()
send(curses.KEY_HOME)
send("/")
send("sh")
local lastpid
local pidpairs = {}
for _ = 1, 3 do
send(curses.KEY_F3)
local line = find_selected_y()
local pid = string_at(1, line, 5)
if lastpid then
pidpairs[#pidpairs + 1] = { lastpid, pid }
lastpid = pid
end
end
send(curses.KEY_HOME)
for _, pair in pairs(pidpairs) do
assert.not_equal(pair[1], pair[2])
end
end)
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running_it("visits each setup screen", function()
send("S")
send(curses.KEY_DOWN, 3)
send(curses.KEY_F10)
end)
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running_it("adds and removes PPID column", function()
send("S")
send(curses.KEY_DOWN, 3)
send(curses.KEY_RIGHT, 2)
send(curses.KEY_DOWN, 2)
send("\n")
send(curses.KEY_F10)
delay(0.2)
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local ppid = check_string_at(2, y_panelhdr, "PPID")
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send("S")
send(curses.KEY_DOWN, 3)
send(curses.KEY_RIGHT, 1)
send(curses.KEY_DC)
send(curses.KEY_F10)
delay(0.2)
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local not_ppid = check_string_at(2, y_panelhdr, "PPID")
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assert.equal(check(ppid))
assert.not_equal(check(not_ppid))
end)
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running_it("changes CPU affinity for a process", function()
send("a")
send(" \n")
send(ESC)
end)
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running_it("renices for a process", function()
send("/")
send("busted")
send("\n")
local line = find_selected_y()
local before = check_string_at(22, line, " 0")
send(curses.KEY_F8)
delay(0.3)
local after = check_string_at(22, line, " 1")
assert.equal(check(before))
assert.equal(check(after))
end)
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running_it("changes IO priority for a process", function()
send("/")
send("htop")
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send("\n")
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send("i")
send(curses.KEY_END)
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send("\n")
send(ESC)
end)
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running_it("shows help", function()
send(curses.KEY_F1)
send("\n")
set_display_option(9)
send(curses.KEY_F1)
send("\n")
set_display_option(9)
end)
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local meters = {
{ name = "clock", down = 0, string = "Time" },
{ name = "load", down = 2, string = "Load" },
{ name = "battery", down = 7, string = "Battery" },
{ name = "hostname", down = 8, string = "Hostname" },
}
for _, item in ipairs(meters) do
running_it("adds and removes a "..item.name.." widget", function()
send("S")
send(curses.KEY_RIGHT, 3)
send(curses.KEY_DOWN, item.down)
if branch == "wip" then
send("\n")
send(curses.KEY_UP, 4)
send("\n")
else
send(curses.KEY_F6)
send(curses.KEY_LEFT)
send(curses.KEY_DOWN, 4)
send(curses.KEY_F7, 4)
end
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send(curses.KEY_F4, 4) -- cycle through meter modes
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delay(0.15)
rt:update()
local with = check_string_at(x_metercol2, 2, item.string)
send(curses.KEY_DC)
delay(0.15)
local without = check_string_at(x_metercol2, 2, item.string)
send(curses.KEY_F10)
assert.equal(check(with))
assert.not_equal(check(without))
end)
end
running_it("goes through themes", function()
send(curses.KEY_F2)
send(curses.KEY_DOWN, 2)
send(curses.KEY_RIGHT)
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for _ = 1, 6 do
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send("\n")
send(curses.KEY_DOWN)
end
send(curses.KEY_UP, 6)
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send("\n")
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send(curses.KEY_F10)
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end)
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local display_options = {
{ name = "tree view", down = 0 },
{ name = "shadow other user's process", down = 1 },
{ name = "hide kernel threads", down = 2 },
{ name = "hide userland threads", down = 3 },
{ name = "display threads in different color", down = 4 },
{ name = "show custom thread names", down = 5 },
{ name = "highlight basename", down = 6 },
{ name = "highlight large numbers", down = 7 },
{ name = "leave margin around header", down = 8 },
{ name = "use detailed CPU time", down = 9 },
{ name = "count from zero", down = 10 },
{ name = "update process names", down = 11 },
{ name = "guest time in CPU%", down = 12 },
}
for _, item in ipairs(display_options) do
running_it("checks display option to "..item.name, function()
for _ = 1, 2 do
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set_display_option(item.down)
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delay(0.1)
end
end)
end
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running_it("shows detailed CPU with guest time", function()
for _ = 1, 2 do
send("S")
send(curses.KEY_DOWN)
send(curses.KEY_RIGHT)
send(curses.KEY_DOWN, 9)
send("\n")
send(curses.KEY_DOWN, 3)
send("\n")
send(curses.KEY_F10)
delay(0.1)
end
end)
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running_it("expands and collapses tree", function()
send(curses.KEY_F5) -- tree view
send(curses.KEY_HOME)
send(curses.KEY_DOWN) -- second process in the tree
send("-")
send("+")
send(curses.KEY_F5)
end)
running_it("sets sort key", function()
send(".")
send("\n")
end)
running_it("tags all children", function()
send(curses.KEY_F5) -- tree view
send(curses.KEY_HOME) -- ensure we're at init
send("c")
local taggedattrs = {}
rt:update()
for y = y_panelhdr + 2, 23 do
table.insert(taggedattrs, rt:cellAttr(y-1, 4))
end
delay(0.2)
send("U")
local untaggedattrs = {}
rt:update()
for y = y_panelhdr + 2, 23 do
table.insert(untaggedattrs, rt:cellAttr(y-1, 4))
end
send(curses.KEY_F5)
for _, taggedattr in ipairs(taggedattrs) do
assert.equal(attrs.yellow_on_black, taggedattr)
end
for _, untaggedattr in ipairs(untaggedattrs) do
assert.equal(attrs.white_on_black, untaggedattr)
end
end)
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for i = 1, 62 do
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running_it("show column "..i, function()
send("S")
send(curses.KEY_END)
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send(curses.KEY_RIGHT, 1)
if i > 1 then
send(curses.KEY_DC)
end
send(curses.KEY_RIGHT, 1)
local down = i
while down > 13 do
send(curses.KEY_NPAGE)
down = down - 13
end
send(curses.KEY_DOWN, down, "quick")
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send("\n")
send(curses.KEY_F10)
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if i == 62 then
send("S")
send(curses.KEY_END)
send(curses.KEY_RIGHT, 1)
if i > 1 then
send(curses.KEY_DC)
end
send(curses.KEY_F10)
end
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end)
end
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it("finally quits", function()
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assert(not terminated())
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send("q")
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while not terminated() do
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unistd.sleep(1)
end
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assert(terminated())
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if visual then
curses.endwin()
end
os.execute("make lcov && xdg-open lcov/index.html")
end)
end)