type-alias-enum-variants-priority-2: account for 'const's + describe test.

Author: Centril

src/test/ui/type-alias-enum-variants/type-alias-enum-variants-priority-2.rs

@@ -1,3 +1,6 @@
+// Check that an `enum` variant is resolved, in the value namespace,
+// with higher priority than other inherent items when there is a conflict.
+
 enum E {
     V(u8)
 }
@@ -6,6 +9,15 @@ impl E {
     fn V() {}
 }
 
+enum E2 {
+    V,
+}
+
+impl E2 {
+    const V: u8 = 0;
+}
+
 fn main() {
     <E>::V(); //~ ERROR this function takes 1 parameter but 0 parameters were supplied
+    let _: u8 = <E2>::V; //~ ERROR mismatched types
 }

src/test/ui/type-alias-enum-variants/type-alias-enum-variants-priority-2.stderr

@@ -1,12 +1,22 @@
 error[E0061]: this function takes 1 parameter but 0 parameters were supplied
-  --> $DIR/type-alias-enum-variants-priority-2.rs:10:5
+  --> $DIR/type-alias-enum-variants-priority-2.rs:21:5
    |
 LL |     V(u8)
    |     ----- defined here
 ...
 LL |     <E>::V();
    |     ^^^^^^^^ expected 1 parameter
 
-error: aborting due to previous error
+error[E0308]: mismatched types
+  --> $DIR/type-alias-enum-variants-priority-2.rs:22:17
+   |
+LL |     let _: u8 = <E2>::V;
+   |                 ^^^^^^^ expected u8, found enum `E2`
+   |
+   = note: expected type `u8`
+              found type `E2`
+
+error: aborting due to 2 previous errors
 
-For more information about this error, try `rustc --explain E0061`.
+Some errors have detailed explanations: E0061, E0308.
+For more information about an error, try `rustc --explain E0061`.