29 lines
694 B
Rust
29 lines
694 B
Rust
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// -*- rust -*-
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// Tests for if as expressions with dynamic type sizes
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type compare<T> = fn@(T, T) -> bool;
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fn test_generic<T>(expected: T, not_expected: T, eq: compare<T>) {
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let actual: T = if true { expected } else { not_expected };
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assert (eq(expected, actual));
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}
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fn test_bool() {
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fn compare_bool(&&b1: bool, &&b2: bool) -> bool { ret b1 == b2; }
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let eq = bind compare_bool(_, _);
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test_generic::<bool>(true, false, eq);
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}
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fn test_rec() {
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type t = {a: int, b: int};
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fn compare_rec(t1: t, t2: t) -> bool { ret t1 == t2; }
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let eq = bind compare_rec(_, _);
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test_generic::<t>({a: 1, b: 2}, {a: 2, b: 3}, eq);
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}
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fn main() { test_bool(); test_rec(); }
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