Add a test for issue #101637

Author: zbyrn

src/test/ui/resolve/typo-suggestion-mistyped-in-path.rs

@@ -0,0 +1,42 @@
+struct Struct;
+//~^ NOTE function or associated item `fob` not found for this struct
+
+impl Struct {
+    fn foo() { }
+}
+
+mod module {
+    fn foo() { }
+
+    struct Struct;
+
+    impl Struct {
+        fn foo() { }
+    }
+}
+
+trait Trait {
+    fn foo();
+}
+
+fn main() {
+    Struct::fob();
+    //~^ ERROR no function or associated item named `fob` found for struct `Struct` in the current scope
+    //~| NOTE function or associated item not found in `Struct`
+
+    Struc::foo();
+    //~^ ERROR failed to resolve: use of undeclared type `Struc`
+    //~| NOTE use of undeclared type `Struc`
+
+    modul::foo();
+    //~^ ERROR failed to resolve: use of undeclared crate or module `modul`
+    //~| NOTE use of undeclared crate or module `modul`
+
+    module::Struc::foo();
+    //~^ ERROR failed to resolve: could not find `Struc` in `module`
+    //~| NOTE could not find `Struc` in `module`
+
+    Trai::foo();
+    //~^ ERROR failed to resolve: use of undeclared type `Trai`
+    //~| NOTE use of undeclared type `Trai`
+}

src/test/ui/resolve/typo-suggestion-mistyped-in-path.stderr

@@ -0,0 +1,54 @@
+error[E0433]: failed to resolve: use of undeclared type `Struc`
+  --> $DIR/typo-suggestion-mistyped-in-path.rs:27:5
+   |
+LL |     Struc::foo();
+   |     ^^^^^
+   |     |
+   |     use of undeclared type `Struc`
+   |     help: a struct with a similar name exists: `Struct`
+
+error[E0433]: failed to resolve: use of undeclared crate or module `modul`
+  --> $DIR/typo-suggestion-mistyped-in-path.rs:31:5
+   |
+LL |     modul::foo();
+   |     ^^^^^ use of undeclared crate or module `modul`
+   |
+help: there is a crate or module with a similar name
+   |
+LL |     module::foo();
+   |     ~~~~~~
+
+error[E0433]: failed to resolve: could not find `Struc` in `module`
+  --> $DIR/typo-suggestion-mistyped-in-path.rs:35:13
+   |
+LL |     module::Struc::foo();
+   |             ^^^^^
+   |             |
+   |             could not find `Struc` in `module`
+   |             help: a struct with a similar name exists: `Struct`
+
+error[E0433]: failed to resolve: use of undeclared type `Trai`
+  --> $DIR/typo-suggestion-mistyped-in-path.rs:39:5
+   |
+LL |     Trai::foo();
+   |     ^^^^
+   |     |
+   |     use of undeclared type `Trai`
+   |     help: a trait with a similar name exists: `Trait`
+
+error[E0599]: no function or associated item named `fob` found for struct `Struct` in the current scope
+  --> $DIR/typo-suggestion-mistyped-in-path.rs:23:13
+   |
+LL | struct Struct;
+   | ------------- function or associated item `fob` not found for this struct
+...
+LL |     Struct::fob();
+   |             ^^^
+   |             |
+   |             function or associated item not found in `Struct`
+   |             help: there is an associated function with a similar name: `foo`
+
+error: aborting due to 5 previous errors
+
+Some errors have detailed explanations: E0433, E0599.
+For more information about an error, try `rustc --explain E0433`.