2 files changed, 19 insertions, 1 deletions

diff --git a/crates/ra_hir_def/src/body/lower.rs b/crates/ra_hir_def/src/body/lower.rs
index a5bb60e85..d8e911aa5 100644
--- a/crates/ra_hir_def/src/body/lower.rs
+++ b/crates/ra_hir_def/src/body/lower.rs
@@ -12,6 +12,7 @@ use ra_syntax::{
     },
     AstNode, AstPtr,
 };
+use test_utils::tested_by;
 
 use crate::{
     body::{Body, BodySourceMap, Expander, PatPtr},
@@ -190,6 +191,7 @@ where
                         None => self.collect_expr_opt(condition.expr()),
                         // if let -- desugar to match
                         Some(pat) => {
+                            tested_by!(infer_resolve_while_let);
                             let pat = self.collect_pat(pat);
                             let match_expr = self.collect_expr_opt(condition.expr());
                             let placeholder_pat = self.missing_pat();
diff --git a/crates/ra_hir_def/src/body/scope.rs b/crates/ra_hir_def/src/body/scope.rs
index aeb71ff22..58740b679 100644
--- a/crates/ra_hir_def/src/body/scope.rs
+++ b/crates/ra_hir_def/src/body/scope.rs
@@ -174,7 +174,7 @@ mod tests {
     use hir_expand::{name::AsName, Source};
     use ra_db::{fixture::WithFixture, FileId, SourceDatabase};
     use ra_syntax::{algo::find_node_at_offset, ast, AstNode};
-    use test_utils::{assert_eq_text, extract_offset};
+    use test_utils::{assert_eq_text, covers, extract_offset};
 
     use crate::{db::DefDatabase2, test_db::TestDB, FunctionId, ModuleDefId};
 
@@ -382,4 +382,20 @@ mod tests {
             53,
         );
     }
+
+    #[test]
+    fn while_let_desugaring() {
+        covers!(infer_resolve_while_let);
+        do_check_local_name(
+            r#"
+fn test() {
+    let foo: Option<f32> = None;
+    while let Option::Some(spam) = foo {
+        spam<|>
+    }
+}
+"#,
+            75,
+        );
+    }
 }