parent
9486f72879
commit
4f859fbcfc
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@ -356,3 +356,19 @@ fn test_replace() {
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assert_eq!(x, Some(3));
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assert_eq!(old, None);
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}
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#[test]
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fn option_const() {
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// test that the methods of `Option` are usable in a const context
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const OPTION: Option<usize> = Some(32);
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const REF: Option<&usize> = OPTION.as_ref();
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assert_eq!(REF, Some(&32));
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const IS_SOME: bool = OPTION.is_some();
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assert!(IS_SOME);
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const IS_NONE: bool = OPTION.is_none();
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assert!(!IS_NONE);
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}
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@ -1,12 +0,0 @@
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// run-pass
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const X: Option<i32> = Some(32);
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const Y: Option<&i32> = X.as_ref();
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const IS_SOME: bool = X.is_some();
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const IS_NONE: bool = Y.is_none();
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fn main() {
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assert!(IS_SOME);
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assert!(!IS_NONE)
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}
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