1 files changed, 265 insertions, 0 deletions

diff --git a/crates/ra_hir/src/nameres/crate_def_map/tests.rs b/crates/ra_hir/src/nameres/crate_def_map/tests.rs
new file mode 100644
index 000000000..a56dbaf90
--- /dev/null
+++ b/crates/ra_hir/src/nameres/crate_def_map/tests.rs
@@ -0,0 +1,265 @@
+use std::sync::Arc;
+
+use ra_db::SourceDatabase;
+use test_utils::covers;
+use insta::assert_snapshot_matches;
+
+use crate::{Crate, mock::{MockDatabase, CrateGraphFixture}, nameres::Resolution};
+
+use super::*;
+
+fn compute_crate_def_map(fixture: &str, graph: Option<CrateGraphFixture>) -> Arc<CrateDefMap> {
+    let mut db = MockDatabase::with_files(fixture);
+    if let Some(graph) = graph {
+        db.set_crate_graph_from_fixture(graph);
+    }
+    let crate_id = db.crate_graph().iter().next().unwrap();
+    let krate = Crate { crate_id };
+    collector::crate_def_map_query(&db, krate)
+}
+
+fn render_crate_def_map(map: &CrateDefMap) -> String {
+    let mut buf = String::new();
+    go(&mut buf, map, "\ncrate", map.root);
+    return buf;
+
+    fn go(buf: &mut String, map: &CrateDefMap, path: &str, module: ModuleId) {
+        *buf += path;
+        *buf += "\n";
+        for (name, res) in map.modules[module].scope.items.iter() {
+            *buf += &format!("{}: {}\n", name, dump_resolution(res))
+        }
+        for (name, child) in map.modules[module].children.iter() {
+            let path = path.to_string() + &format!("::{}", name);
+            go(buf, map, &path, *child);
+        }
+    }
+
+    fn dump_resolution(resolution: &Resolution) -> &'static str {
+        match (resolution.def.types.is_some(), resolution.def.values.is_some()) {
+            (true, true) => "t v",
+            (true, false) => "t",
+            (false, true) => "v",
+            (false, false) => "_",
+        }
+    }
+}
+
+fn def_map(fixtute: &str) -> String {
+    let dm = compute_crate_def_map(fixtute, None);
+    render_crate_def_map(&dm)
+}
+
+fn def_map_with_crate_graph(fixtute: &str, graph: CrateGraphFixture) -> String {
+    let dm = compute_crate_def_map(fixtute, Some(graph));
+    render_crate_def_map(&dm)
+}
+
+#[test]
+fn crate_def_map_smoke_test() {
+    let map = def_map(
+        "
+        //- /lib.rs
+        mod foo;
+        struct S;
+
+        //- /foo/mod.rs
+        pub mod bar;
+        fn f() {}
+
+        //- /foo/bar.rs
+        pub struct Baz;
+        enum E { V }
+        ",
+    );
+    assert_snapshot_matches!(map, @r###"
+crate
+S: t v
+
+crate::foo
+f: v
+
+crate::foo::bar
+Baz: t v
+E: t
+"###
+    )
+}
+
+#[test]
+fn macro_rules_are_globally_visible() {
+    let map = def_map(
+        "
+        //- /lib.rs
+        macro_rules! structs {
+            ($($i:ident),*) => {
+                $(struct $i { field: u32 } )*
+            }
+        }
+        structs!(Foo);
+        mod nested;
+
+        //- /nested.rs
+        structs!(Bar, Baz);
+        ",
+    );
+    assert_snapshot_matches!(map, @r###"
+crate
+Foo: t v
+
+crate::nested
+Bar: t v
+Baz: t v
+"###);
+}
+
+#[test]
+fn macro_rules_can_define_modules() {
+    let map = def_map(
+        "
+        //- /lib.rs
+        macro_rules! m {
+            ($name:ident) => { mod $name;  }
+        }
+        m!(n1);
+
+        //- /n1.rs
+        m!(n2)
+        //- /n1/n2.rs
+        struct X;
+        ",
+    );
+    assert_snapshot_matches!(map, @r###"
+crate
+
+crate::n1
+
+crate::n1::n2
+X: t v
+"###);
+}
+
+#[test]
+fn macro_rules_from_other_crates_are_visible() {
+    let map = def_map_with_crate_graph(
+        "
+        //- /main.rs
+        foo::structs!(Foo, Bar)
+        mod bar;
+
+        //- /bar.rs
+        use crate::*;
+
+        //- /lib.rs
+        #[macro_export]
+        macro_rules! structs {
+            ($($i:ident),*) => {
+                $(struct $i { field: u32 } )*
+            }
+        }
+        ",
+        crate_graph! {
+            "main": ("/main.rs", ["foo"]),
+            "foo": ("/lib.rs", []),
+        },
+    );
+    assert_snapshot_matches!(map, @r###"
+crate
+Foo: t v
+Bar: t v
+
+crate::bar
+Foo: t v
+Bar: t v
+"###);
+}
+
+#[test]
+fn std_prelude() {
+    covers!(std_prelude);
+    let map = def_map_with_crate_graph(
+        "
+        //- /main.rs
+        use Foo::*;
+
+        //- /lib.rs
+        mod prelude;
+        #[prelude_import]
+        use prelude::*;
+
+        //- /prelude.rs
+        pub enum Foo { Bar, Baz };
+        ",
+        crate_graph! {
+            "main": ("/main.rs", ["test_crate"]),
+            "test_crate": ("/lib.rs", []),
+        },
+    );
+    assert_snapshot_matches!(map, @r###"
+crate
+Bar: t v
+Baz: t v
+"###);
+}
+
+#[test]
+fn glob_across_crates() {
+    covers!(glob_across_crates);
+    let map = def_map_with_crate_graph(
+        "
+        //- /main.rs
+        use test_crate::*;
+
+        //- /lib.rs
+        pub struct Baz;
+        ",
+        crate_graph! {
+            "main": ("/main.rs", ["test_crate"]),
+            "test_crate": ("/lib.rs", []),
+        },
+    );
+    assert_snapshot_matches!(map, @r###"
+crate
+Baz: t v
+"###
+    );
+}
+
+#[test]
+fn item_map_enum_importing() {
+    covers!(item_map_enum_importing);
+    let map = def_map(
+        "
+        //- /lib.rs
+        enum E { V }
+        use self::E::V;
+        ",
+    );
+    assert_snapshot_matches!(map, @r###"
+crate
+V: t v
+E: t
+"###
+    );
+}
+
+#[test]
+fn glob_enum() {
+    covers!(glob_enum);
+    let map = def_map(
+        "
+        //- /lib.rs
+        enum Foo {
+            Bar, Baz
+        }
+        use self::Foo::*;
+        ",
+    );
+    assert_snapshot_matches!(map, @r###"
+crate
+Foo: t
+Bar: t v
+Baz: t v
+"###
+    );
+}