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v/vlib/os/os_test.v

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import os
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import time
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const (
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// 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()
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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
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}
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.')
}
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fn test_open_file() {
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filename := './test1.txt'
hello := 'hello world!'
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os.open_file(filename, 'r+', 0o666) or {
assert err.msg == 'No such file or directory'
os.File{}
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}
mut file := os.open_file(filename, 'w+', 0o666) or { panic(err) }
file.write_string(hello) or { panic(err) }
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file.close()
assert hello.len == os.file_size(filename)
read_hello := os.read_file(filename) or { panic('error reading file $filename') }
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assert hello == read_hello
os.rm(filename) or { panic(err) }
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}
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'
// }
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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) }
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f.close()
assert hello.len == os.file_size(filename)
os.rm(filename) or { panic(err) }
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}
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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')
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// 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) }
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assert os.is_file(tfile)
// Test dir symlinks
$if windows {
assert true
} $else {
dsymlink := os.join_path(work_dir, 'dir_symlink')
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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')
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os.system('ln -s $tfile $fsymlink')
assert os.is_file(fsymlink)
}
}
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fn test_write_and_read_string_to_file() {
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filename := './test1.txt'
hello := 'hello world!'
os.write_file(filename, hello) or { panic(err) }
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assert hello.len == os.file_size(filename)
read_hello := os.read_file(filename) or { panic('error reading file $filename') }
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assert hello == read_hello
os.rm(filename) or { panic(err) }
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}
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// 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: $payload')
assert rbytes == payload
// check that trying to read data from EOF doesn't error and returns 0
mut a := []byte{len: 5}
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nread := file_read.read_bytes_into(5, mut a) or {
n := if err is none {
int(0)
} else {
eprintln(err)
int(-1)
}
n
}
assert nread == 0
file_read.close()
// We finally delete the test file.
os.rm(file_name) or { panic(err) }
}
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fn test_create_and_delete_folder() {
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folder := './test1'
os.mkdir(folder) or { panic(err) }
assert os.is_dir(folder)
folder_contents := os.ls(folder) or { panic(err) }
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assert folder_contents.len == 0
os.rmdir(folder) or { panic(err) }
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folder_exists := os.is_dir(folder)
assert folder_exists == false
}
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fn walk_callback(file string) {
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if file == '.' || file == '..' {
return
}
assert file == 'test_walk' + os.path_separator + 'test1'
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}
fn test_walk() {
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folder := 'test_walk'
os.mkdir(folder) or { panic(err) }
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file1 := folder + os.path_separator + 'test1'
os.write_file(file1, 'test-1') or { panic(err) }
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os.walk(folder, walk_callback)
os.rm(file1) or { panic(err) }
os.rmdir(folder) or { panic(err) }
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}
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fn test_cp() {
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old_file_name := 'cp_example.txt'
new_file_name := 'cp_new_example.txt'
os.write_file(old_file_name, 'Test data 1 2 3, V is awesome #$%^[]!~') 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) }
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assert old_file == new_file
os.rm(old_file_name) or { panic(err) }
os.rm(new_file_name) or { panic(err) }
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}
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 !os.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 os.is_dir(expected)
expected = os.join_path(tdir2, 'dir', 'file')
assert os.exists(expected)
assert !os.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 os.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 !os.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 !os.is_dir(expected)
}
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fn test_cp_all() {
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// 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) }
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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) }
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assert old2 == new2
// recurring on dir -> local dir
os.cp_all('ex', './', true) or { panic(err) }
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// 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'))
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}
fn test_realpath_of_empty_string_works() {
assert os.real_path('') == ''
}
fn test_realpath_non_existing() {
non_existing_path := 'sdyfuisd_non_existing_file'
rpath := os.real_path(non_existing_path)
$if windows {
// on windows, the workdir is prepended, so the result is absolute:
assert rpath.len > non_existing_path.len
}
$if !windows {
// on unix, the workdir is NOT prepended for now, so the result remains the same.
// TODO: the windows behaviour seems saner, think about normalising the unix case to do the same.
assert os.real_path(non_existing_path) == non_existing_path
}
}
fn test_realpath_existing() {
existing_file_name := 'existing_file.txt'
existing_file := os.join_path(os.temp_dir(), existing_file_name)
os.rm(existing_file) or {}
os.write_file(existing_file, 'abc') or {}
assert os.exists(existing_file)
rpath := os.real_path(existing_file)
assert os.is_abs_path(rpath)
assert rpath.ends_with(existing_file_name)
os.rm(existing_file) or {}
}
fn test_realpath_removes_dots() {
examples_folder := os.join_path(@VEXEROOT, 'vlib', 'v', '..', '..', 'cmd', '.', '..',
'examples')
real_path_of_examples_folder := os.real_path(examples_folder)
assert real_path_of_examples_folder.len < examples_folder.len
assert !real_path_of_examples_folder.contains('..')
}
fn test_realpath_absolutizes_existing_relative_paths() {
old_wd := os.getwd()
defer {
os.chdir(old_wd)
}
os.chdir(@VEXEROOT)
examples_folder := os.join_path('vlib', 'v', '..', '..', 'cmd', '.', '..', 'examples')
real_path_of_examples_folder := os.real_path(examples_folder)
assert os.is_abs_path(real_path_of_examples_folder)
}
// TODO: think much more about whether this is desirable:
fn test_realpath_does_not_absolutize_non_existing_relative_paths() {
relative_path := os.join_path('one', 'nonexisting_folder', '..', 'something')
$if !windows {
assert os.real_path(relative_path).contains('..')
assert os.real_path(relative_path) == relative_path
}
}
fn test_realpath_absolutepath_symlink() {
file_name := 'tolink_file.txt'
symlink_name := 'symlink.txt'
mut f := os.create(file_name) or { panic(err) }
f.close()
assert os.symlink(file_name, symlink_name) or { panic(err) }
rpath := os.real_path(symlink_name)
println(rpath)
assert os.is_abs_path(rpath)
assert rpath.ends_with(file_name)
os.rm(symlink_name) or {}
os.rm(file_name) or {}
}
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fn test_tmpdir() {
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t := os.temp_dir()
assert t.len > 0
assert os.is_dir(t)
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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) }
}
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fn test_is_writable_folder() {
tmp := os.temp_dir()
f := os.is_writable_folder(tmp) or {
eprintln('err: $err')
false
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}
assert f
}
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fn test_make_symlink_check_is_link_and_remove_symlink() {
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folder := 'tfolder'
symlink := 'tsymlink'
// windows creates a directory symlink, so delete it with rmdir()
$if windows {
os.rmdir(symlink) or {}
} $else {
os.rm(symlink) or {}
}
os.rmdir(folder) or {}
os.mkdir(folder) or { panic(err) }
folder_contents := os.ls(folder) or { panic(err) }
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assert folder_contents.len == 0
os.symlink(folder, symlink) or { panic(err) }
assert os.is_link(symlink)
$if windows {
os.rmdir(symlink) or { panic(err) }
} $else {
os.rm(symlink) or { panic(err) }
}
os.rmdir(folder) or { panic(err) }
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folder_exists := os.is_dir(folder)
assert folder_exists == false
symlink_exists := os.is_link(symlink)
assert symlink_exists == false
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}
fn test_make_symlink_check_is_link_and_remove_symlink_with_file() {
file := 'tfile'
symlink := 'tsymlink'
os.rm(symlink) or {}
os.rm(file) or {}
mut f := os.create(file) or { panic(err) }
f.close()
os.symlink(file, symlink) or { panic(err) }
assert os.is_link(symlink)
os.rm(symlink) or { panic(err) }
os.rm(file) or { panic(err) }
symlink_exists := os.is_link(symlink)
assert symlink_exists == false
}
fn test_make_hardlink_check_is_link_and_remove_hardlink_with_file() {
file := 'tfile'
symlink := 'tsymlink'
os.rm(symlink) or {}
os.rm(file) or {}
mut f := os.create(file) or { panic(err) }
f.close()
os.link(file, symlink) or { panic(err) }
assert os.exists(symlink)
os.rm(symlink) or { panic(err) }
os.rm(file) or { panic(err) }
symlink_exists := os.is_link(symlink)
assert symlink_exists == false
}
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// 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() {
os.mkdir('symlink') or { panic(err) }
os.symlink('symlink', 'symlink2') or { panic(err) }
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assert os.exists('symlink2')
// cleanup
os.rmdir('symlink') or { panic(err) }
$if windows {
os.rmdir('symlink2') or { panic(err) }
} $else {
os.rm('symlink2') or { panic(err) }
}
}
fn test_is_executable_writable_readable() {
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file_name := 'rwxfile.exe'
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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
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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
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assert os.is_executable(file_name)
} $else {
assert os.is_writable(file_name)
assert os.is_readable(file_name)
assert os.is_executable(file_name)
}
// We finally delete the test file.
os.rm(file_name) or { panic(err) }
}
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fn test_ext() {
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assert os.file_ext('file.v') == '.v'
assert os.file_ext('file') == ''
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}
fn test_is_abs() {
assert os.is_abs_path('/home/user')
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assert os.is_abs_path('v/vlib') == false
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$if windows {
assert os.is_abs_path('C:\\Windows\\')
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}
}
fn test_join() {
$if windows {
assert os.join_path('v', 'vlib', 'os') == 'v\\vlib\\os'
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} $else {
assert os.join_path('v', 'vlib', 'os') == 'v/vlib/os'
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}
}
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')
}
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fn test_dir() {
$if windows {
assert os.dir('C:\\a\\b\\c') == 'C:\\a\\b'
assert os.dir('C:\\a\\b\\') == 'C:\\a\\b'
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} $else {
assert os.dir('/var/tmp/foo') == '/var/tmp'
assert os.dir('/var/tmp/') == '/var/tmp'
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}
assert os.dir('os') == '.'
}
fn test_base() {
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$if windows {
assert os.base('v\\vlib\\os') == 'os'
assert os.base('v\\vlib\\os\\') == 'os'
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} $else {
assert os.base('v/vlib/os') == 'os'
assert os.base('v/vlib/os/') == 'os'
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}
assert os.base('filename') == 'filename'
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}
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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'
} $else {
assert os.file_name('v/vlib/os/os.v') == 'os.v'
assert os.file_name('v/vlib/os/') == ''
assert os.file_name('v/vlib/os') == 'os'
}
assert os.file_name('filename') == 'filename'
}
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fn test_uname() {
u := os.uname()
assert u.sysname.len > 0
assert u.nodename.len > 0
assert u.release.len > 0
assert u.version.len > 0
assert u.machine.len > 0
}
// tests for write_file_array and read_file_array<T>:
const (
maxn = 3
)
struct IntPoint {
x int
y int
}
fn test_write_file_array_bytes() {
fpath := './abytes.bin'
mut arr := []byte{len: maxn}
for i in 0 .. maxn {
arr[i] = 65 + byte(i)
}
os.write_file_array(fpath, arr) or { panic(err) }
rarr := os.read_bytes(fpath) or { panic(err) }
assert arr == rarr
// eprintln(arr.str())
// eprintln(rarr.str())
}
fn test_write_file_array_structs() {
fpath := './astructs.bin'
mut arr := []IntPoint{len: maxn}
for i in 0 .. maxn {
arr[i] = IntPoint{65 + i, 65 + i + 10}
}
os.write_file_array(fpath, arr) or { panic(err) }
rarr := os.read_file_array<IntPoint>(fpath)
assert rarr == arr
assert rarr.len == maxn
// eprintln( rarr.str().replace('\n', ' ').replace('},', '},\n'))
}
fn test_stdout_capture() {
/*
mut cmd := os.Command{
path:'cat'
redirect_stdout: true
}
cmd.start()
for !cmd.eof {
line := cmd.read_line()
println('line="$line"')
}
cmd.close()
*/
}
fn test_posix_set_bit() {
$if windows {
assert true
} $else {
fpath := '/tmp/permtest'
os.create(fpath) or { panic("Couldn't create file") }
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os.chmod(fpath, 0o0777)
c_fpath := &char(fpath.str)
mut s := C.stat{}
unsafe {
C.stat(c_fpath, &s)
}
// Take the permissions part of the mode
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mut mode := u32(s.st_mode) & 0o0777
assert mode == 0o0777
// `chmod u-r`
os.posix_set_permission_bit(fpath, os.s_irusr, false)
unsafe {
C.stat(c_fpath, &s)
}
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mode = u32(s.st_mode) & 0o0777
assert mode == 0o0377
// `chmod u+r`
os.posix_set_permission_bit(fpath, os.s_irusr, true)
unsafe {
C.stat(c_fpath, &s)
}
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mode = u32(s.st_mode) & 0o0777
assert mode == 0o0777
// NB: setting the sticky bit is platform dependend
// `chmod -s -g -t`
os.posix_set_permission_bit(fpath, os.s_isuid, false)
os.posix_set_permission_bit(fpath, os.s_isgid, false)
os.posix_set_permission_bit(fpath, os.s_isvtx, false)
unsafe {
C.stat(c_fpath, &s)
}
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mode = u32(s.st_mode) & 0o0777
assert mode == 0o0777
// `chmod g-w o-w`
os.posix_set_permission_bit(fpath, os.s_iwgrp, false)
os.posix_set_permission_bit(fpath, os.s_iwoth, false)
unsafe {
C.stat(c_fpath, &s)
}
mode = u32(s.st_mode) & 0o7777
assert mode == 0o0755
os.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')
}
fn test_truncate() {
filename := './test_trunc.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)
newlen := u64(40000)
os.truncate(filename, newlen) or { panic(err) }
assert newlen == os.file_size(filename)
os.rm(filename) or { panic(err) }
}
fn test_hostname() {
assert os.hostname().len > 2
}
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fn test_glob() {
os.mkdir('test_dir') or { panic(err) }
for i in 0 .. 4 {
if i == 3 {
mut f := os.create('test_dir/test0_another') or { panic(err) }
f.close()
mut f1 := os.create('test_dir/test') or { panic(err) }
f1.close()
} else {
mut f := os.create('test_dir/test' + i.str()) or { panic(err) }
f.close()
}
}
files := os.glob('test_dir/t*') or { panic(err) }
assert files.len == 5
assert os.base(files[0]) == 'test'
for i in 0 .. 3 {
os.rm('test_dir/test' + i.str()) or { panic(err) }
}
os.rm('test_dir/test0_another') or { panic(err) }
os.rm('test_dir/test') or { panic(err) }
os.rmdir_all('test_dir') or { panic(err) }
}
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fn test_utime() {
filename := './test_utime.txt'
hello := 'hello world!'
mut f := os.create(filename) or { panic(err) }
defer {
f.close()
os.rm(filename) or { panic(err) }
}
f.write_string(hello) or { panic(err) }
atime := time.now().add_days(2).unix_time()
mtime := time.now().add_days(4).unix_time()
os.utime(filename, atime, mtime) or { panic(err) }
assert os.file_last_mod_unix(filename) == mtime
}