rust/src/test/run-pass/module-polymorphism4.rs

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// This isn't really xfailed; it's used by the
// module-polymorphism.rc test
// xfail-test
fn main() {
import cat::trait::talky;
import dog::trait::talky;
let cat1 = cat::inst::meowlycat;
let cat2 = cat::inst::howlycat;
let dog = dog::inst::dog;
assert cat1.says() == "cat says 'meow'";
assert cat2.says() == "cat says 'howl'";
assert dog.says() == "dog says 'woof'";
}