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#[derive(Debug, PartialEq)]
enum Unit {
Unit(()), // Force non-C-enum representation.
}
fn return_unit() -> Unit {
Unit::Unit(())
}
#[derive(Debug, PartialEq)]
enum MyBool {
False(()), // Force non-C-enum representation.
True(()),
}
fn return_true() -> MyBool {
MyBool::True(())
}
fn return_false() -> MyBool {
MyBool::False(())
}
fn return_none() -> Option<i64> {
None
}
fn return_some() -> Option<i64> {
Some(42)
}
fn match_opt_none() -> i8 {
let x = None;
match x {
Some(data) => data,
None => 42,
}
}
fn match_opt_some() -> i8 {
let x = Some(13);
match x {
Some(data) => data,
None => 20,
}
}
fn two_nones() -> (Option<i16>, Option<i16>) {
(None, None)
}
fn main() {
assert_eq!(two_nones(), (None, None));
assert_eq!(match_opt_some(), 13);
assert_eq!(match_opt_none(), 42);
assert_eq!(return_some(), Some(42));
assert_eq!(return_none(), None);
assert_eq!(return_false(), MyBool::False(()));
assert_eq!(return_true(), MyBool::True(()));
assert_eq!(return_unit(), Unit::Unit(()));
}
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