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v/vlib/os/filelock/filelock_test.v

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import os
import os.filelock
fn test_flock() {
lockfile := 'test.lock'
mut l := filelock.new(lockfile)
assert !os.exists(lockfile)
l.acquire() or { panic(err) }
assert os.exists(lockfile)
// do stuff
l.release()
assert !os.exists(lockfile)
}
fn test_flock_try() {
lockfile := 'test-try.lock'
mut l := filelock.new(lockfile)
assert l.try_acquire()
l.release()
assert !os.exists(lockfile)
assert l.try_acquire()
assert os.exists(lockfile)
l.release()
assert l.try_acquire()
l.release()
assert !os.exists(lockfile)
}