Added tests for issues.

src/test/ui/cast-char.stderr

@@ -1,17 +1,17 @@
 error: only `u8` can be cast into `char`
-  --> $DIR/cast_char.rs:4:23
+  --> $DIR/cast-char.rs:4:23
    |
 LL |     const XYZ: char = 0x1F888 as char;
    |                       ^^^^^^^^^^^^^^^ help: use a `char` literal instead: `'\u{1F888}'`
    |
 note: lint level defined here
-  --> $DIR/cast_char.rs:1:9
+  --> $DIR/cast-char.rs:1:9
    |
 LL | #![deny(overflowing_literals)]
    |         ^^^^^^^^^^^^^^^^^^^^
 
 error: only `u8` can be cast into `char`
-  --> $DIR/cast_char.rs:6:22
+  --> $DIR/cast-char.rs:6:22
    |
 LL |     const XY: char = 129160 as char;
    |                      ^^^^^^^^^^^^^^ help: use a `char` literal instead: `'\u{1F888}'`

src/test/ui/type-alias/issue-62263-self-in-atb.rs

@@ -0,0 +1,8 @@
+pub trait Trait {
+    type A;
+}
+
+pub type Alias = dyn Trait<A = Self::A>;
+//~^ ERROR failed to resolve: use of undeclared type or module `Self` [E0433]
+
+fn main() {}

src/test/ui/type-alias/issue-62305-self-assoc-ty.rs

@@ -0,0 +1,4 @@
+type Alias = Self::Target;
+//~^ ERROR failed to resolve: use of undeclared type or module `Self` [E0433]
+
+fn main() {}

src/test/ui/type-alias/issue-62364-self-ty-arg.rs

@@ -0,0 +1,8 @@
+struct Struct<P1> {
+    field: P1,
+}
+
+type Alias<'a> = Struct<&'a Self>;
+//~^ ERROR cannot find type `Self` in this scope [E0411]
+
+fn main() {}