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before:
this_module = 'posix.stdlib'
global_table = '_G'
M = require(this_module)
specify posix.stdlib:
- context when required:
- it does not touch the global table:
expect(show_apis {added_to=global_table, by=this_module}).
to_equal {}
- describe abort:
- context with bad arguments:
badargs.diagnose(M.abort, "()")
- describe getenv:
- before:
getenv = M.getenv
- context with bad arguments:
badargs.diagnose(getenv, "(?string)")
- it fetches a table of process environment variables: |
volatile = { _=true, CWD=true, LUA_PATH=true, PWD=true, SHLVL=true, }
ESC = string.char(27)
for k,v in pairs(getenv()) do
if not volatile[k] then
expect(hell.spawn('echo "' .. k .. '=$' .. k .. '" | tr "' .. ESC .. '" "^"')).
to_contain_output(k .. "=" .. string.gsub(v, '\\033', '^'))
end
end
- it fetches a named process environment variable:
expect(getenv "USER").to_be(cmd_output('echo "$USER"'))
expect(getenv "HOME").to_be(cmd_output('echo "$HOME"'))
- it returns nil for an absent environment setting:
expect(getenv "very_unlikely_to_be_set").to_be(nil)
- describe grantpt:
- context with bad arguments:
badargs.diagnose(M.grantpt, "(int)")
- describe mkdtemp:
- before:
st = require "posix.sys.stat"
mkdtemp = M.mkdtemp
stat, IFMT, IFDIR, IRWXU = st.stat, st.S_IFMT, st.S_IFDIR, st.S_IRWXU
IRWXA = bor(st.S_IRWXU, st.S_IRWXG, st.S_IRWXO)
- context with bad arguments:
badargs.diagnose(mkdtemp, "(string)")
- it creates a temporary directory from a template:
dir, errmsg = mkdtemp(template)
expect(dir).not_to_be(nil)
dirstat = stat(dir)
expect(band(dirstat.st_mode, IFMT)).to_be(IFDIR)
expect(band(dirstat.st_mode, IRWXA)).to_be(IRWXU)
rmtmp(dir)
- describe mkstemp:
- before:
fc = require "posix.fcntl"
st = require "posix.sys.stat"
unistd = require "posix.unistd"
O_RDONLY, open = fc.O_RDONLY, fc.open
mkstemp = M.mkstemp
close, isatty, read, write =
unistd.close, unistd.isatty, unistd.read, unistd.write
stat, IFMT, IFREG = st.stat, st.S_IFMT, st.S_IFREG
IRW_U = bor(st.S_IRUSR, st.S_IWUSR)
IRWXA = bor(st.S_IRWXU, st.S_IRWXG, st.S_IRWXO)
fd, path = mkstemp(template)
- after:
close(fd)
os.remove(path)
- context with bad arguments:
badargs.diagnose(mkstemp, "(string)")
- it creates a temporary file from a template:
expect(fd).not_to_be(nil)
write(fd, "12345")
expect(isatty(fd)).not_to_be(true)
fstat = stat(path)
expect(band(fstat.st_mode, IFMT)).to_be(IFREG)
expect(band(fstat.st_mode, IRWXA)).to_be(IRW_U)
expect(fstat.st_size).to_be(5)
fd2 = open(path, O_RDONLY)
expect(read(fd2, 5)).to_be "12345"
close(fd2)
- it creates a new temporary file on each call:
fd2, another = mkstemp(template)
expect(fd2).not_to_be(fd)
expect(another).not_to_be(path)
close(fd2)
os.remove(another)
- describe openpt:
- before:
fc = require "posix.fcntl"
st = require "posix.sys.stat"
close = require "posix.unistd".close
grantpt, openpt, ptsname, unlockpt =
M.grantpt, M.openpt, M.ptsname, M.unlockpt
O_RDWR, O_NOCTTY, open = fc.O_RDWR, fc.O_NOCTTY, fc.open
stat, IFMT, IFCHR = st.stat, st.S_IFMT, st.S_IFCHR
- context with bad arguments:
badargs.diagnose(openpt, "(int)")
- it can create a pseudoterminal:
masterfd = openpt(bor(O_RDWR, O_NOCTTY))
expect(type(masterfd)).to_be "number"
expect(masterfd > 0).to_be(true)
expect(Emsg(grantpt(masterfd))).to_be ""
expect(Emsg(unlockpt(masterfd))).to_be ""
slavename = ptsname(masterfd)
slavestat = stat(slavename)
expect(band(slavestat.st_mode, IFMT)).to_be(IFCHR)
slavefd = open(slavename, bor(O_RDWR, O_NOCTTY))
expect(type(slavefd)).to_be "number"
expect(slavefd > 0).to_be(true)
close(slavefd)
close(masterfd)
- describe ptsname:
- context with bad arguments:
badargs.diagnose(M.ptsname, "(int)")
- describe realpath:
- context with bad arguments:
badargs.diagnose(M.realpath, "(string)")
- describe setenv:
- before:
getenv, setenv = M.getenv, M.setenv
- context with bad arguments:
badargs.diagnose(M.setenv, "(string, ?string, ?any)")
- it sets a new value in the process environment:
setenv("MYVAR", "123")
expect(getenv "MYVAR").to_be "123"
setenv("MYVAR", nil)
expect(getenv "MYVAR").to_be(nil)
- describe unlockpt:
- context with bad arguments:
badargs.diagnose(M.unlockpt, "(int)")
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