move crate_def_map tests to hir_def

1 files changed, 133 insertions, 0 deletions

diff --git a/crates/ra_hir_def/src/nameres/tests/incremental.rs b/crates/ra_hir_def/src/nameres/tests/incremental.rs
new file mode 100644
index 000000000..80dcec62f
--- /dev/null
+++ b/crates/ra_hir_def/src/nameres/tests/incremental.rs
@@ -0,0 +1,133 @@
+use std::sync::Arc;
+
+use ra_db::{SourceDatabase, SourceDatabaseExt};
+
+use super::*;
+
+fn check_def_map_is_not_recomputed(initial: &str, file_change: &str) {
+    let (mut db, pos) = TestDB::with_position(initial);
+    let krate = db.crate_graph().iter().next().unwrap();
+    {
+        let events = db.log_executed(|| {
+            db.crate_def_map(krate);
+        });
+        assert!(format!("{:?}", events).contains("crate_def_map"), "{:#?}", events)
+    }
+    db.set_file_text(pos.file_id, Arc::new(file_change.to_string()));
+
+    {
+        let events = db.log_executed(|| {
+            db.crate_def_map(krate);
+        });
+        assert!(!format!("{:?}", events).contains("crate_def_map"), "{:#?}", events)
+    }
+}
+
+#[test]
+fn typing_inside_a_function_should_not_invalidate_def_map() {
+    check_def_map_is_not_recomputed(
+        "
+        //- /lib.rs
+        mod foo;<|>
+
+        use crate::foo::bar::Baz;
+
+        fn foo() -> i32 {
+            1 + 1
+        }
+        //- /foo/mod.rs
+        pub mod bar;
+
+        //- /foo/bar.rs
+        pub struct Baz;
+        ",
+        "
+        mod foo;
+
+        use crate::foo::bar::Baz;
+
+        fn foo() -> i32 { 92 }
+        ",
+    );
+}
+
+#[test]
+fn adding_inner_items_should_not_invalidate_def_map() {
+    check_def_map_is_not_recomputed(
+        "
+        //- /lib.rs
+        struct S { a: i32}
+        enum E { A }
+        trait T {
+            fn a() {}
+        }
+        mod foo;<|>
+        impl S {
+            fn a() {}
+        }
+        use crate::foo::bar::Baz;
+        //- /foo/mod.rs
+        pub mod bar;
+
+        //- /foo/bar.rs
+        pub struct Baz;
+        ",
+        "
+        struct S { a: i32, b: () }
+        enum E { A, B }
+        trait T {
+            fn a() {}
+            fn b() {}
+        }
+        mod foo;<|>
+        impl S {
+            fn a() {}
+            fn b() {}
+        }
+        use crate::foo::bar::Baz;
+        ",
+    );
+}
+
+#[test]
+fn typing_inside_a_macro_should_not_invalidate_def_map() {
+    let (mut db, pos) = TestDB::with_position(
+        "
+        //- /lib.rs
+        macro_rules! m {
+            ($ident:ident) => {
+                fn f() {
+                    $ident + $ident;
+                };
+            }
+        }
+        mod foo;
+
+        //- /foo/mod.rs
+        pub mod bar;
+
+        //- /foo/bar.rs
+        <|>
+        m!(X);
+        ",
+    );
+    let krate = db.crate_graph().iter().next().unwrap();
+    {
+        let events = db.log_executed(|| {
+            let crate_def_map = db.crate_def_map(krate);
+            let (_, module_data) = crate_def_map.modules.iter().last().unwrap();
+            assert_eq!(module_data.scope.items.len(), 1);
+        });
+        assert!(format!("{:?}", events).contains("crate_def_map"), "{:#?}", events)
+    }
+    db.set_file_text(pos.file_id, Arc::new("m!(Y);".to_string()));
+
+    {
+        let events = db.log_executed(|| {
+            let crate_def_map = db.crate_def_map(krate);
+            let (_, module_data) = crate_def_map.modules.iter().last().unwrap();
+            assert_eq!(module_data.scope.items.len(), 1);
+        });
+        assert!(!format!("{:?}", events).contains("crate_def_map"), "{:#?}", events)
+    }
+}