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