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#[derive(Clone, Copy, Debug, Eq, PartialEq)]
pub enum ThreadMode {
Sequential,
Parallel,
}
impl ThreadMode {
pub fn from_threads(threads: u32) -> ThreadMode {
if threads > 1 {
ThreadMode::Parallel
} else {
ThreadMode::Sequential
}
}
}
impl Default for ThreadMode {
fn default() -> ThreadMode {
ThreadMode::Sequential
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn default_returns_correct_thread_mode() {
assert_eq!(ThreadMode::default(), ThreadMode::Sequential);
}
#[test]
fn from_threads_returns_correct_thread_mode() {
assert_eq!(ThreadMode::from_threads(0), ThreadMode::Sequential);
assert_eq!(ThreadMode::from_threads(1), ThreadMode::Sequential);
assert_eq!(ThreadMode::from_threads(2), ThreadMode::Parallel);
assert_eq!(ThreadMode::from_threads(10), ThreadMode::Parallel);
assert_eq!(ThreadMode::from_threads(100), ThreadMode::Parallel);
}
}