Added items

mist-test/src/items/trait_test.mist

@@ -0,0 +1,41 @@
+pub module trait_test;
+
+trait Speak {
+    fn String speak(*self);
+}
+
+trait Greet : Speak {
+    fn String greet(*self);
+}
+
+struct Dog {
+    name String,
+}
+
+impl Speak for Dog {
+    fn String speak(*self) {
+        "woof".to_string()
+    }
+}
+
+impl Greet for Dog {
+    fn String greet(*self) {
+        "hello".to_string()
+    }
+}
+
+pub fn void test_trait_impl() {
+    let d = Dog { name: "Rex".to_string() };
+    assert_eq!(d.speak(), "woof");
+}
+
+pub fn void test_trait_with_requirement() {
+    let d = Dog { name: "Buddy".to_string() };
+    assert_eq!(d.speak(), "woof");
+    assert_eq!(d.greet(), "hello");
+}
+
+pub fn void run_tests() {
+    test_trait_impl();
+    test_trait_with_requirement();
+}