21 lines
776 B
Rust
21 lines
776 B
Rust
// xfail-test -- flat_map_to_vec currently disable
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fn repeat(&&x: uint) -> ~[uint] { ~[x, x] }
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fn incd_if_even(&&x: uint) -> option<uint> {
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if (x % 2u) == 0u {some(x + 1u)} else {none}
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}
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fn main() {
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assert ~[1u, 3u].flat_map_to_vec(repeat) == ~[1u, 1u, 3u, 3u];
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assert ~[].flat_map_to_vec(repeat) == ~[];
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assert none.flat_map_to_vec(repeat) == ~[];
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assert some(1u).flat_map_to_vec(repeat) == ~[1u, 1u];
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assert some(2u).flat_map_to_vec(repeat) == ~[2u, 2u];
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assert ~[1u, 2u, 5u].flat_map_to_vec(incd_if_even) == ~[3u];
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assert ~[].flat_map_to_vec(incd_if_even) == ~[];
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assert none.flat_map_to_vec(incd_if_even) == ~[];
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assert some(1u).flat_map_to_vec(incd_if_even) == ~[];
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assert some(2u).flat_map_to_vec(incd_if_even) == ~[3u];
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} |