Add a dash test

crates/base_db/src/fixture.rs

@@ -162,11 +162,11 @@ impl ChangeFixture {
                     meta.env,
                     Default::default(),
                 );
-                let crate_name = CrateName::new(&krate).unwrap();
+                let crate_name = CrateName::normalize_dashes(&krate);
                 let prev = crates.insert(crate_name.clone(), crate_id);
                 assert!(prev.is_none());
                 for dep in meta.deps {
-                    let dep = CrateName::new(&dep).unwrap();
+                    let dep = CrateName::normalize_dashes(&dep);
                     crate_deps.push((crate_name.clone(), dep))
                 }
             } else if meta.path == "/main.rs" || meta.path == "/lib.rs" {

crates/ide/src/hover.rs

@@ -3163,4 +3163,34 @@ fn main() { let s<|>t = test().get(); }
             "#]],
         );
     }
+
+    #[test]
+    fn hover_displays_normalized_crate_names() {
+        check(
+            r#"
+//- /lib.rs crate:name-with-dashes
+pub mod wrapper {
+    pub struct Thing { x: u32 }
+
+    impl Thing {
+        pub fn new() -> Thing { Thing { x: 0 } }
+    }
+}
+
+//- /main.rs crate:main deps:name-with-dashes
+fn main() { let foo_test = name_with_dashes::wrapper::Thing::new<|>(); }
+"#,
+            expect![[r#"
+            *new*
+
+            ```rust
+            name_with_dashes::wrapper::Thing
+            ```
+
+            ```rust
+            pub fn new() -> Thing
+            ```
+            "#]],
+        )
+    }
 }