SSR: Add initial support for placeholder constraints

1 files changed, 17 insertions, 0 deletions

diff --git a/crates/ra_ssr/src/tests.rs b/crates/ra_ssr/src/tests.rs
index c692c97e2..9568d4432 100644
--- a/crates/ra_ssr/src/tests.rs
+++ b/crates/ra_ssr/src/tests.rs
@@ -1,5 +1,6 @@
 use crate::{MatchFinder, SsrRule};
 use ra_db::{FileId, SourceDatabaseExt};
+use test_utils::mark;
 
 fn parse_error_text(query: &str) -> String {
     format!("{}", query.parse::<SsrRule>().unwrap_err())
@@ -302,6 +303,22 @@ fn match_pattern() {
 }
 
 #[test]
+fn literal_constraint() {
+    mark::check!(literal_constraint);
+    let code = r#"
+        fn f1() {
+            let x1 = Some(42);
+            let x2 = Some("foo");
+            let x3 = Some(x1);
+            let x4 = Some(40 + 2);
+            let x5 = Some(true);
+        }
+        "#;
+    assert_matches("Some(${a:kind(literal)})", code, &["Some(42)", "Some(\"foo\")", "Some(true)"]);
+    assert_matches("Some(${a:not(kind(literal))})", code, &["Some(x1)", "Some(40 + 2)"]);
+}
+
+#[test]
 fn match_reordered_struct_instantiation() {
     assert_matches(
         "Foo {aa: 1, b: 2, ccc: 3}",