Updated tests and fixed grammar

mist-test/src/items/impl_test.mist

@@ -1,39 +1,39 @@
 pub module impl_test;
 
 struct Vector2 {
-    x i32,
-    y i32,
+    i32 x,
+    i32 y,
 }
 
 impl Vector2 {
-    pub fn i32 magnitude(*self) {
+    pub i32 magnitude(&self) {
         self.x * self.x + self.y * self.y
     }
 }
 
-pub fn void test_inherent_impl() {
+pub void test_inherent_impl() {
     let v = Vector2 { x: 3, y: 4 };
     assert_eq!(v.magnitude(), 25);
 }
 
 trait Display {
-    fn String display(*self);
+    String display(&self);
 }
 
 impl Display for Vector2 {
-    fn String display(*self) {
+    String display(&self) {
         format!("({}, {})", self.x, self.y)
     }
 }
 
-pub fn void test_trait_impl_block() {
+pub void test_trait_impl_block() {
     let v = Vector2 { x: 1, y: 2 };
     let s = v.display();
     assert_eq!(s.len() > 0, true);
 }
 
 impl Vector2 {
-    pub fn Vector2 add(*self, other Vector2) {
+    pub Vector2 add(&self, Vector2 other) {
         Vector2 {
             x: self.x + other.x,
             y: self.y + other.y,
@@ -41,7 +41,7 @@ impl Vector2 {
     }
 }
 
-pub fn void test_multiple_impls() {
+pub void test_multiple_impls() {
     let a = Vector2 { x: 1, y: 2 };
     let b = Vector2 { x: 3, y: 4 };
     let c = a.add(b);
@@ -49,7 +49,7 @@ pub fn void test_multiple_impls() {
     assert_eq!(c.y, 6);
 }
 
-pub fn void run_tests() {
+pub void run_tests() {
     test_inherent_impl();
     test_trait_impl_block();
     test_multiple_impls();