remove duplication in tests

Author: matklad

crates/ra_hir/src/nameres/tests.rs

@@ -322,9 +322,33 @@ fn reexport_across_crates() {
     );
 }
 
+fn check_item_map_is_not_recomputed(initial: &str, file_change: &str) {
+    let (mut db, pos) = MockDatabase::with_position(initial);
+    let source_root = db.file_source_root(pos.file_id);
+    {
+        let events = db.log_executed(|| {
+            db.item_map(source_root).unwrap();
+        });
+        assert!(format!("{:?}", events).contains("item_map"))
+    }
+    db.query_mut(ra_db::FileTextQuery)
+        .set(pos.file_id, Arc::new(file_change.to_string()));
+
+    {
+        let events = db.log_executed(|| {
+            db.item_map(source_root).unwrap();
+        });
+        assert!(
+            !format!("{:?}", events).contains("item_map"),
+            "{:#?}",
+            events
+        )
+    }
+}
+
 #[test]
 fn typing_inside_a_function_should_not_invalidate_item_map() {
-    let (mut db, pos) = MockDatabase::with_position(
+    check_item_map_is_not_recomputed(
         "
         //- /lib.rs
         mod foo;
@@ -342,42 +366,19 @@ fn typing_inside_a_function_should_not_invalidate_item_map() {
             }
         }
         ",
-    );
-    let source_root = db.file_source_root(pos.file_id);
-    {
-        let events = db.log_executed(|| {
-            db.item_map(source_root).unwrap();
-        });
-        assert!(format!("{:?}", events).contains("item_map"))
-    }
-
-    let new_text = "
+        "
         salsa::query_group! {
             trait Baz {
                 fn foo() -> i32 { 92 }
             }
         }
-    "
-    .to_string();
-
-    db.query_mut(ra_db::FileTextQuery)
-        .set(pos.file_id, Arc::new(new_text));
-
-    {
-        let events = db.log_executed(|| {
-            db.item_map(source_root).unwrap();
-        });
-        assert!(
-            !format!("{:?}", events).contains("item_map"),
-            "{:#?}",
-            events
-        )
-    }
+        ",
+    );
 }
 
 #[test]
 fn typing_inside_a_function_inside_a_macro_should_not_invalidate_item_map() {
-    let (mut db, pos) = MockDatabase::with_position(
+    check_item_map_is_not_recomputed(
         "
         //- /lib.rs
         mod foo;<|>
@@ -392,36 +393,13 @@ fn typing_inside_a_function_inside_a_macro_should_not_invalidate_item_map() {
 
         //- /foo/bar.rs
         pub struct Baz;
-    ",
-    );
-    let source_root = db.file_source_root(pos.file_id);
-    {
-        let events = db.log_executed(|| {
-            db.item_map(source_root).unwrap();
-        });
-        assert!(format!("{:?}", events).contains("item_map"))
-    }
-
-    let new_text = "
+        ",
+        "
         mod foo;
 
         use crate::foo::bar::Baz;
 
         fn foo() -> i32 { 92 }
-    "
-    .to_string();
-
-    db.query_mut(ra_db::FileTextQuery)
-        .set(pos.file_id, Arc::new(new_text));
-
-    {
-        let events = db.log_executed(|| {
-            db.item_map(source_root).unwrap();
-        });
-        assert!(
-            !format!("{:?}", events).contains("item_map"),
-            "{:#?}",
-            events
-        )
-    }
+        ",
+    );
 }