1 files changed, 134 insertions, 12 deletions

diff --git a/crates/ra_hir_ty/src/tests.rs b/crates/ra_hir_ty/src/tests.rs
index c8461b447..a3cc5cf95 100644
--- a/crates/ra_hir_ty/src/tests.rs
+++ b/crates/ra_hir_ty/src/tests.rs
@@ -8,7 +8,7 @@ use hir_def::{
     body::BodySourceMap, db::DefDatabase, nameres::CrateDefMap, AssocItemId, DefWithBodyId,
     LocalModuleId, Lookup, ModuleDefId,
 };
-use hir_expand::Source;
+use hir_expand::InFile;
 use insta::assert_snapshot;
 use ra_db::{fixture::WithFixture, salsa::Database, FilePosition, SourceDatabase};
 use ra_syntax::{
@@ -222,6 +222,56 @@ mod collections {
 }
 
 #[test]
+fn infer_ranges() {
+    let (db, pos) = TestDB::with_position(
+        r#"
+//- /main.rs crate:main deps:std
+fn test() {
+    let a = ..;
+    let b = 1..;
+    let c = ..2u32;
+    let d = 1..2usize;
+    let e = ..=10;
+    let f = 'a'..='z';
+
+    let t = (a, b, c, d, e, f);
+    t<|>;
+}
+
+//- /std.rs crate:std
+#[prelude_import] use prelude::*;
+mod prelude {}
+
+pub mod ops {
+    pub struct Range<Idx> {
+        pub start: Idx,
+        pub end: Idx,
+    }
+    pub struct RangeFrom<Idx> {
+        pub start: Idx,
+    }
+    struct RangeFull;
+    pub struct RangeInclusive<Idx> {
+        start: Idx,
+        end: Idx,
+        is_empty: u8,
+    }
+    pub struct RangeTo<Idx> {
+        pub end: Idx,
+    }
+    pub struct RangeToInclusive<Idx> {
+        pub end: Idx,
+    }
+}
+"#,
+    );
+    assert_eq!(
+        "(RangeFull, RangeFrom<i32>, RangeTo<u32>, Range<usize>, RangeToInclusive<i32>, RangeInclusive<char>)",
+        type_at_pos(&db, pos),
+    );
+}
+
+#[test]
 fn infer_while_let() {
     let (db, pos) = TestDB::with_position(
         r#"
@@ -2104,7 +2154,6 @@ fn test(x: Foo, y: Bar<&str>, z: Baz<i8, u8>) {
 }
 
 #[test]
-#[should_panic] // we currently can't handle this
 fn recursive_type_alias() {
     assert_snapshot!(
         infer(r#"
@@ -2113,7 +2162,10 @@ type Foo = Foo;
 type Bar = A<Bar>;
 fn test(x: Foo) {}
 "#),
-        @""
+        @r###"
+    [59; 60) 'x': {unknown}
+    [67; 69) '{}': ()
+    "###
     )
 }
 
@@ -3642,6 +3694,42 @@ fn main() {
 }
 
 #[test]
+fn not_shadowing_primitive_by_module() {
+    let t = type_at(
+        r#"
+//- /str.rs
+fn foo() {}
+
+//- /main.rs
+mod str;
+fn foo() -> &'static str { "" }
+
+fn main() {
+    foo()<|>;
+}"#,
+    );
+    assert_eq!(t, "&str");
+}
+
+#[test]
+fn not_shadowing_module_by_primitive() {
+    let t = type_at(
+        r#"
+//- /str.rs
+fn foo() -> u32 {0}
+
+//- /main.rs
+mod str;
+fn foo() -> &'static str { "" }
+
+fn main() {
+    str::foo()<|>;
+}"#,
+    );
+    assert_eq!(t, "u32");
+}
+
+#[test]
 fn deref_trait() {
     let t = type_at(
         r#"
@@ -4626,10 +4714,48 @@ fn test<T, U>() where T::Item: Trait2, T: Trait<U::Item>, U: Trait<()> {
 }
 
 #[test]
-// FIXME this is currently a Salsa panic; it would be nicer if it just returned
-// in Unknown, and we should be able to do that once Salsa allows us to handle
-// the cycle. But at least it doesn't overflow for now.
-#[should_panic]
+fn trait_impl_self_ty() {
+    let t = type_at(
+        r#"
+//- /main.rs
+trait Trait<T> {
+   fn foo(&self);
+}
+
+struct S;
+
+impl Trait<Self> for S {}
+
+fn test() {
+    S.foo()<|>;
+}
+"#,
+    );
+    assert_eq!(t, "()");
+}
+
+#[test]
+fn trait_impl_self_ty_cycle() {
+    let t = type_at(
+        r#"
+//- /main.rs
+trait Trait {
+   fn foo(&self);
+}
+
+struct S<T>;
+
+impl Trait for S<Self> {}
+
+fn test() {
+    S.foo()<|>;
+}
+"#,
+    );
+    assert_eq!(t, "{unknown}");
+}
+
+#[test]
 fn unselected_projection_in_trait_env_cycle_1() {
     let t = type_at(
         r#"
@@ -4650,10 +4776,6 @@ fn test<T: Trait>() where T: Trait2<T::Item> {
 }
 
 #[test]
-// FIXME this is currently a Salsa panic; it would be nicer if it just returned
-// in Unknown, and we should be able to do that once Salsa allows us to handle
-// the cycle. But at least it doesn't overflow for now.
-#[should_panic]
 fn unselected_projection_in_trait_env_cycle_2() {
     let t = type_at(
         r#"
@@ -4680,7 +4802,7 @@ fn type_at_pos(db: &TestDB, pos: FilePosition) -> String {
     for decl in crate_def_map[module.local_id].scope.declarations() {
         if let ModuleDefId::FunctionId(func) = decl {
             let (_body, source_map) = db.body_with_source_map(func.into());
-            if let Some(expr_id) = source_map.node_expr(Source::new(pos.file_id.into(), &expr)) {
+            if let Some(expr_id) = source_map.node_expr(InFile::new(pos.file_id.into(), &expr)) {
                 let infer = db.infer(func.into());
                 let ty = &infer[expr_id];
                 return ty.display(db).to_string();