Drop rarely used fixture functionality

crates/ra_db/src/fixture.rs

@@ -114,7 +114,6 @@ fn with_single_file(db: &mut dyn SourceDatabaseExt, ra_fixture: &str) -> FileId
     let crate_graph = if let Some(entry) = fixture {
         let meta = match ParsedMeta::from(&entry.meta) {
             ParsedMeta::File(it) => it,
-            _ => panic!("with_single_file only support file meta"),
         };
 
         let mut crate_graph = CrateGraph::default();
@@ -159,21 +158,14 @@ fn with_files(db: &mut dyn SourceDatabaseExt, fixture: &str) -> Option<FilePosit
     let mut default_crate_root: Option<FileId> = None;
 
     let mut file_set = FileSet::default();
-    let mut source_root_id = WORKSPACE;
-    let mut source_root_prefix = "/".to_string();
+    let source_root_id = WORKSPACE;
+    let source_root_prefix = "/".to_string();
     let mut file_id = FileId(0);
 
     let mut file_position = None;
 
     for entry in fixture.iter() {
         let meta = match ParsedMeta::from(&entry.meta) {
-            ParsedMeta::Root { path } => {
-                let file_set = std::mem::replace(&mut file_set, FileSet::default());
-                db.set_source_root(source_root_id, Arc::new(SourceRoot::new_local(file_set)));
-                source_root_id.0 += 1;
-                source_root_prefix = path;
-                continue;
-            }
             ParsedMeta::File(it) => it,
         };
         assert!(meta.path.starts_with(&source_root_prefix));
@@ -239,7 +231,6 @@ fn with_files(db: &mut dyn SourceDatabaseExt, fixture: &str) -> Option<FilePosit
 }
 
 enum ParsedMeta {
-    Root { path: String },
     File(FileMeta),
 }
 
@@ -255,11 +246,6 @@ struct FileMeta {
 impl From<&FixtureMeta> for ParsedMeta {
     fn from(meta: &FixtureMeta) -> Self {
         match meta {
-            FixtureMeta::Root { path } => {
-                // `Self::Root` causes a false warning: 'variant is never constructed: `Root` '
-                // see https://github.com/rust-lang/rust/issues/69018
-                ParsedMeta::Root { path: path.to_owned() }
-            }
             FixtureMeta::File(f) => Self::File(FileMeta {
                 path: f.path.to_owned(),
                 krate: f.crate_name.to_owned(),

crates/ra_hir_def/src/nameres/tests.rs

@@ -423,31 +423,6 @@ fn extern_crate_rename_2015_edition() {
     );
 }
 
-#[test]
-fn import_across_source_roots() {
-    let map = def_map(
-        "
-        //- /main.rs crate:main deps:test_crate
-        use test_crate::a::b::C;
-
-        //- root /test_crate/
-
-        //- /test_crate/lib.rs crate:test_crate
-        pub mod a {
-            pub mod b {
-                pub struct C;
-            }
-        }
-
-        ",
-    );
-
-    assert_snapshot!(map, @r###"
-        ⋮crate
-        ⋮C: t v
-    "###);
-}
-
 #[test]
 fn reexport_across_crates() {
     let map = def_map(

crates/test_utils/src/fixture.rs

@@ -10,7 +10,6 @@ pub struct FixtureEntry {
 
 #[derive(Debug, Eq, PartialEq)]
 pub enum FixtureMeta {
-    Root { path: String },
     File(FileMeta),
 }
 
@@ -27,7 +26,6 @@ pub struct FileMeta {
 impl FixtureMeta {
     pub fn path(&self) -> &str {
         match self {
-            FixtureMeta::Root { path } => &path,
             FixtureMeta::File(f) => &f.path,
         }
     }
@@ -35,21 +33,18 @@ pub fn path(&self) -> &str {
     pub fn crate_name(&self) -> Option<&String> {
         match self {
             FixtureMeta::File(f) => f.crate_name.as_ref(),
-            _ => None,
         }
     }
 
     pub fn cfg_options(&self) -> Option<&CfgOptions> {
         match self {
             FixtureMeta::File(f) => Some(&f.cfg),
-            _ => None,
         }
     }
 
     pub fn edition(&self) -> Option<&String> {
         match self {
             FixtureMeta::File(f) => f.edition.as_ref(),
-            _ => None,
         }
     }
 
@@ -63,7 +58,6 @@ fn new(meta: &'a FixtureMeta) -> Self {
                 Self {
                     iter: match meta {
                         FixtureMeta::File(f) => Some(f.env.iter()),
-                        _ => None,
                     },
                 }
             }
@@ -146,12 +140,6 @@ pub fn parse_fixture(ra_fixture: &str) -> Vec<FixtureEntry> {
 fn parse_meta(meta: &str) -> FixtureMeta {
     let components = meta.split_ascii_whitespace().collect::<Vec<_>>();
 
-    if components[0] == "root" {
-        let path = components[1].to_string();
-        assert!(path.starts_with("/") && path.ends_with("/"));
-        return FixtureMeta::Root { path };
-    }
-
     let path = components[0].to_string();
     assert!(path.starts_with("/"));