v/vlib/os/os_test.v at master · ZargorNET/v

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import os

const (

// tfolder will contain all the temporary files/subfolders made by

// the different tests. It would be removed in testsuite_end(), so

// individual os tests do not need to clean up after themselves.

tfolder = os.join_path(os.temp_dir(), 'v', 'tests', 'os_test')

)

// os.args has to be *already initialized* with the program's argc/argv at this point

// thus it can be used for other consts too:

const args_at_start = os.args.clone()

fn testsuite_begin() {

eprintln('testsuite_begin, tfolder = $tfolder')

os.rmdir_all(tfolder) or {}

assert !os.is_dir(tfolder)

os.mkdir_all(tfolder) or { panic(err) }

os.chdir(tfolder)

assert os.is_dir(tfolder)

// println('args_at_start: $args_at_start')

assert args_at_start.len > 0

assert args_at_start == os.args

}

fn testsuite_end() {

os.chdir(os.wd_at_startup)

os.rmdir_all(tfolder) or {}

assert !os.is_dir(tfolder)

// eprintln('testsuite_end , tfolder = $tfolder removed.')

}

fn test_open_file() {

filename := './test1.txt'

hello := 'hello world!'

os.open_file(filename, 'r+', 0o666) or {

assert err.msg == 'No such file or directory'

os.File{}

}

mut file := os.open_file(filename, 'w+', 0o666) or { panic(err) }

file.write_string(hello) or { panic(err) }

file.close()

assert hello.len == os.file_size(filename)

read_hello := os.read_file(filename) or { panic('error reading file $filename') }

assert hello == read_hello

os.rm(filename) or { panic(err) }

}

fn test_open_file_binary() {

filename := './test1.dat'

hello := 'hello \n world!'

os.open_file(filename, 'r+', 0o666) or {

assert err.msg == 'No such file or directory'

os.File{}

}

mut file := os.open_file(filename, 'wb+', 0o666) or { panic(err) }

bytes := hello.bytes()

unsafe { file.write_ptr(bytes.data, bytes.len) }

file.close()

assert hello.len == os.file_size(filename)

read_hello := os.read_bytes(filename) or { panic('error reading file $filename') }

assert bytes == read_hello

os.rm(filename) or { panic(err) }

}

// fn test_file_get_line() {

// filename := './fgetline.txt'

// os.write_file(filename, 'line 1\nline 2')

// mut f := os.open_file(filename, 'r', 0) or {

// assert false

// return

// }

// line1 := f.get_line() or {

// ''

// }

// line2 := f.get_line() or {

// ''

// }

// f.close()

// //

// eprintln('line1: $line1 $line1.bytes()')

// eprintln('line2: $line2 $line2.bytes()')

// assert line1 == 'line 1\n'

// assert line2 == 'line 2'

// }

fn test_create_file() {

filename := './test1.txt'

hello := 'hello world!'

mut f := os.create(filename) or { panic(err) }

f.write_string(hello) or { panic(err) }

f.close()

assert hello.len == os.file_size(filename)

os.rm(filename) or { panic(err) }

}

fn test_is_file() {

// Setup

work_dir := os.join_path(os.getwd(), 'is_file_test')

os.mkdir_all(work_dir) or { panic(err) }

tfile := os.join_path(work_dir, 'tmp_file')

// Test things that shouldn't be a file

assert os.is_file(work_dir) == false

assert os.is_file('non-existent_file.tmp') == false

// Test file

tfile_content := 'temporary file'

os.write_file(tfile, tfile_content) or { panic(err) }

assert os.is_file(tfile)

// Test dir symlinks

$if windows {

assert true

} $else {

dsymlink := os.join_path(work_dir, 'dir_symlink')

os.system('ln -s $work_dir $dsymlink')

assert os.is_file(dsymlink) == false

}

// Test file symlinks

$if windows {

assert true

} $else {

fsymlink := os.join_path(work_dir, 'file_symlink')

os.system('ln -s $tfile $fsymlink')

assert os.is_file(fsymlink)

}

fn test_write_and_read_string_to_file() {

filename := './test1.txt'

hello := 'hello world!'

os.write_file(filename, hello) or { panic(err) }

assert hello.len == os.file_size(filename)

read_hello := os.read_file(filename) or { panic('error reading file $filename') }

assert hello == read_hello

os.rm(filename) or { panic(err) }

}

// test_write_and_read_bytes checks for regressions made in the functions

// read_bytes, read_bytes_at and write_bytes.

fn test_write_and_read_bytes() {

file_name := './byte_reader_writer.tst'

payload := [byte(`I`), `D`, `D`, `Q`, `D`]

mut file_write := os.create(os.real_path(file_name)) or {

eprintln('failed to create file $file_name')

return

}

// We use the standard write_bytes function to write the payload and

// compare the length of the array with the file size (have to match).

unsafe { file_write.write_ptr(payload.data, 5) }

file_write.close()

assert payload.len == os.file_size(file_name)

mut file_read := os.open(os.real_path(file_name)) or {

eprintln('failed to open file $file_name')

return

}

// We only need to test read_bytes because this function calls

// read_bytes_at with second parameter zeroed (size, 0).

rbytes := file_read.read_bytes(5)

// eprintln('rbytes: $rbytes')

// eprintln('payload: $payload')

assert rbytes == payload

// check that trying to read data from EOF doesn't error and returns 0

mut a := []byte{len: 5}

nread := file_read.read_bytes_into(5, mut a) or {

eprintln(err)

int(-1)

}

assert nread == 0

file_read.close()

// We finally delete the test file.

os.rm(file_name) or { panic(err) }

}

fn test_create_and_delete_folder() {

folder := './test1'

os.mkdir(folder) or { panic(err) }

assert os.is_dir(folder)

folder_contents := os.ls(folder) or { panic(err) }

assert folder_contents.len == 0

os.rmdir(folder) or { panic(err) }

folder_exists := os.is_dir(folder)

assert folder_exists == false

}

fn walk_callback(file string) {

if file == '.' || file == '..' {

return

}

assert file == 'test_walk' + os.path_separator + 'test1'

}

fn test_walk() {

folder := 'test_walk'

os.mkdir(folder) or { panic(err) }

file1 := folder + os.path_separator + 'test1'

os.write_file(file1, 'test-1') or { panic(err) }

os.walk(folder, walk_callback)

os.rm(file1) or { panic(err) }

os.rmdir(folder) or { panic(err) }

}

fn test_cp() {

old_file_name := 'cp_example.txt'

new_file_name := 'cp_new_example.txt'

os.write_file(old_file_name, 'Test data 1 2 3, V is awesome #$%^[]!~⭐') or { panic(err) }

os.cp(old_file_name, new_file_name) or { panic('$err') }

old_file := os.read_file(old_file_name) or { panic(err) }

new_file := os.read_file(new_file_name) or { panic(err) }

assert old_file == new_file

os.rm(old_file_name) or { panic(err) }

os.rm(new_file_name) or { panic(err) }

}

fn test_mv() {

work_dir := os.join_path(os.getwd(), 'mv_test')

os.mkdir_all(work_dir) or { panic(err) }

// Setup test files

tfile1 := os.join_path(work_dir, 'file')

tfile2 := os.join_path(work_dir, 'file.test')

tfile3 := os.join_path(work_dir, 'file.3')

tfile_content := 'temporary file'

os.write_file(tfile1, tfile_content) or { panic(err) }

os.write_file(tfile2, tfile_content) or { panic(err) }

// Setup test dirs

tdir1 := os.join_path(work_dir, 'dir')

tdir2 := os.join_path(work_dir, 'dir2')

tdir3 := os.join_path(work_dir, 'dir3')

os.mkdir(tdir1) or { panic(err) }

os.mkdir(tdir2) or { panic(err) }

// Move file with no extension to dir

os.mv(tfile1, tdir1) or { panic(err) }

mut expected := os.join_path(tdir1, 'file')

assert os.exists(expected)

assert !is_dir(expected)

// Move dir with contents to other dir

os.mv(tdir1, tdir2) or { panic(err) }

expected = os.join_path(tdir2, 'dir')

assert os.exists(expected)

assert is_dir(expected)

expected = os.join_path(tdir2, 'dir', 'file')

assert os.exists(expected)

assert !is_dir(expected)

// Move dir with contents to other dir (by renaming)

os.mv(os.join_path(tdir2, 'dir'), tdir3) or { panic(err) }

expected = tdir3

assert os.exists(expected)

assert is_dir(expected)

assert os.is_dir_empty(tdir2)

// Move file with extension to dir

os.mv(tfile2, tdir2) or { panic(err) }

expected = os.join_path(tdir2, 'file.test')

assert os.exists(expected)

assert !is_dir(expected)

// Move file to dir (by renaming)

os.mv(os.join_path(tdir2, 'file.test'), tfile3) or { panic(err) }

expected = tfile3

assert os.exists(expected)

assert !is_dir(expected)

}

fn test_cp_all() {

// fileX -> dir/fileX

// NB: clean up of the files happens inside the cleanup_leftovers function

os.write_file('ex1.txt', 'wow!') or { panic(err) }

os.mkdir('ex') or { panic(err) }

os.cp_all('ex1.txt', 'ex', false) or { panic(err) }

old := os.read_file('ex1.txt') or { panic(err) }

new := os.read_file('ex/ex1.txt') or { panic(err) }

assert old == new

os.mkdir('ex/ex2') or { panic(err) }

os.write_file('ex2.txt', 'great!') or { panic(err) }

os.cp_all('ex2.txt', 'ex/ex2', false) or { panic(err) }

old2 := os.read_file('ex2.txt') or { panic(err) }

new2 := os.read_file('ex/ex2/ex2.txt') or { panic(err) }

assert old2 == new2

// recurring on dir -> local dir

os.cp_all('ex', './', true) or { panic(err) }

// regression test for executive runs with overwrite := true

os.cp_all('ex', './', true) or { panic(err) }

os.cp_all('ex', 'nonexisting', true) or { panic(err) }

assert os.exists(os.join_path('nonexisting', 'ex1.txt'))

}

fn test_realpath() {

assert os.real_path('') == ''

}

fn test_tmpdir() {

t := os.temp_dir()

assert t.len > 0

assert os.is_dir(t)

tfile := t + os.path_separator + 'tmpfile.txt'

os.rm(tfile) or {} // just in case

tfile_content := 'this is a temporary file'

os.write_file(tfile, tfile_content) or { panic(err) }

tfile_content_read := os.read_file(tfile) or { panic(err) }

assert tfile_content_read == tfile_content

os.rm(tfile) or { panic(err) }

}

fn test_is_writable_folder() {

tmp := os.temp_dir()

f := os.is_writable_folder(tmp) or {

eprintln('err: $err')

false

}

assert f

}

fn test_make_symlink_check_is_link_and_remove_symlink() {

$if windows {

// TODO

assert true

return

}

folder := 'tfolder'

symlink := 'tsymlink'

os.rm(symlink) or {}

os.rm(folder) or {}

os.mkdir(folder) or { panic(err) }

folder_contents := os.ls(folder) or { panic(err) }

assert folder_contents.len == 0

os.system('ln -s $folder $symlink')

assert os.is_link(symlink)

os.rm(symlink) or { panic(err) }

os.rm(folder) or { panic(err) }

folder_exists := os.is_dir(folder)

assert folder_exists == false

symlink_exists := os.is_link(symlink)

assert symlink_exists == false

}

// fn test_fork() {

// pid := os.fork()

// if pid == 0 {

// println('Child')

// }

// else {

// println('Parent')

// }

// fn test_wait() {

// pid := os.fork()

// if pid == 0 {

// println('Child')

// exit(0)

// }

// else {

// cpid := os.wait()

// println('Parent')

// println(cpid)

// }

fn test_symlink() {

$if windows {

return

}

os.mkdir('symlink') or { panic(err) }

os.symlink('symlink', 'symlink2') or { panic(err) }

assert os.exists('symlink2')

// cleanup

os.rm('symlink') or { panic(err) }

os.rm('symlink2') or { panic(err) }

}

fn test_is_executable_writable_readable() {

file_name := 'rwxfile.exe'

mut f := os.create(file_name) or {

eprintln('failed to create file $file_name')

return

}

f.close()

$if !windows {

os.chmod(file_name, 0o600) // mark as readable && writable, but NOT executable

assert os.is_writable(file_name)

assert os.is_readable(file_name)

assert !os.is_executable(file_name)

os.chmod(file_name, 0o700) // mark as executable too

assert os.is_executable(file_name)

} $else {

assert os.is_writable(file_name)

assert os.is_readable(file_name)

assert os.is_executable(file_name)

}

// We finally delete the test file.

os.rm(file_name) or { panic(err) }

}

fn test_ext() {

assert os.file_ext('file.v') == '.v'

assert os.file_ext('file') == ''

}

fn test_is_abs() {

assert os.is_abs_path('/home/user')

assert os.is_abs_path('v/vlib') == false

$if windows {

assert os.is_abs_path('C:\\Windows\\')

}

fn test_join() {

$if windows {

assert os.join_path('v', 'vlib', 'os') == 'v\\vlib\\os'

} $else {

assert os.join_path('v', 'vlib', 'os') == 'v/vlib/os'

}

fn test_rmdir_all() {

mut dirs := ['some/dir', 'some/.hidden/directory']

$if windows {

for mut d in dirs {

d = d.replace('/', '\\')

}

for d in dirs {

os.mkdir_all(d) or { panic(err) }

assert os.is_dir(d)

}

os.rmdir_all('some') or { assert false }

assert !os.exists('some')

}

fn test_dir() {

$if windows {

assert os.dir('C:\\a\\b\\c') == 'C:\\a\\b'

assert os.dir('C:\\a\\b\\') == 'C:\\a\\b'

} $else {

assert os.dir('/var/tmp/foo') == '/var/tmp'

assert os.dir('/var/tmp/') == '/var/tmp'

}

assert os.dir('os') == '.'

}

fn test_base() {

$if windows {

assert os.base('v\\vlib\\os') == 'os'

assert os.base('v\\vlib\\os\\') == 'os'

} $else {

assert os.base('v/vlib/os') == 'os'

assert os.base('v/vlib/os/') == 'os'

}

assert os.base('filename') == 'filename'

}

fn test_file_name() {

$if windows {

assert os.file_name('v\\vlib\\os\\os.v') == 'os.v'

assert os.file_name('v\\vlib\\os\\') == ''

assert os.file_name('v\\vlib\\os') == 'os'

} $else {

assert os.file_name('v/vlib/os/os.v') == 'os.v'

assert os.file_name('v/vlib/os/') == ''

assert os.file_name('v/vlib/os') == 'os'

}

assert os.file_name('filename') == 'filename'

}

fn test_uname() {

u := os.uname()

assert u.sysname.len > 0

assert u.nodename.len > 0

assert u.release.len > 0

assert u.version.len > 0

assert u.machine.len > 0

}

// tests for write_file_array and read_file_array<T>:

const (

maxn = 3

)

struct IntPoint {

x int

y int

}

fn test_write_file_array_bytes() {

fpath := './abytes.bin'

mut arr := []byte{len: maxn}

for i in 0 .. maxn {

arr[i] = 65 + byte(i)

}

os.write_file_array(fpath, arr) or { panic(err) }

rarr := os.read_bytes(fpath) or { panic(err) }

assert arr == rarr

// eprintln(arr.str())

// eprintln(rarr.str())

}

fn test_write_file_array_structs() {

fpath := './astructs.bin'

mut arr := []IntPoint{len: maxn}

for i in 0 .. maxn {

arr[i] = IntPoint{65 + i, 65 + i + 10}

}

os.write_file_array(fpath, arr) or { panic(err) }

rarr := os.read_file_array<IntPoint>(fpath)

assert rarr == arr

assert rarr.len == maxn

// eprintln( rarr.str().replace('\n', ' ').replace('},', '},\n'))

}

fn test_stdout_capture() {

mut cmd := os.Command{

path:'cat'

redirect_stdout: true

}

cmd.start()

for !cmd.eof {

line := cmd.read_line()

println('line="$line"')

}

cmd.close()

}

fn test_posix_set_bit() {

$if windows {

assert true

} $else {

fpath := '/tmp/permtest'

create(fpath) or { panic("Couldn't create file") }

chmod(fpath, 0o7777)

c_fpath := charptr(fpath.str)

mut s := C.stat{}

unsafe {

C.stat(c_fpath, &s)

}

// Take the permissions part of the mode

mut mode := u32(s.st_mode) & 0o7777

assert mode == 0o7777

// `chmod u-r`

posix_set_permission_bit(fpath, os.s_irusr, false)

unsafe {

C.stat(c_fpath, &s)

}

mode = u32(s.st_mode) & 0o7777

assert mode == 0o7377

// `chmod u+r`

posix_set_permission_bit(fpath, os.s_irusr, true)

unsafe {

C.stat(c_fpath, &s)

}

mode = u32(s.st_mode) & 0o7777

assert mode == 0o7777

// `chmod -s -g -t`

posix_set_permission_bit(fpath, os.s_isuid, false)

posix_set_permission_bit(fpath, os.s_isgid, false)

posix_set_permission_bit(fpath, os.s_isvtx, false)

unsafe {

C.stat(c_fpath, &s)

}

mode = u32(s.st_mode) & 0o7777

assert mode == 0o0777

// `chmod g-w o-w`

posix_set_permission_bit(fpath, os.s_iwgrp, false)

posix_set_permission_bit(fpath, os.s_iwoth, false)

unsafe {

C.stat(c_fpath, &s)

}

mode = u32(s.st_mode) & 0o7777

assert mode == 0o0755

rm(fpath) or {}

}

fn test_exists_in_system_path() {

assert os.exists_in_system_path('') == false

$if windows {

assert os.exists_in_system_path('cmd.exe')

return

}

assert os.exists_in_system_path('ls')

}

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