add test

Author: nathanwhit

tests/integration/lsp_tests.rs

@@ -17414,3 +17414,51 @@ fn type_reference_import_meta() {
     client.did_close_file(&source);
   }
 }
+
+#[test]
+fn ambient_module_errors_suppressed() {
+  let context = TestContextBuilder::new().use_temp_cwd().build();
+  let mut client = context.new_lsp_command().build();
+  let temp_dir = context.temp_dir().path();
+
+  client.initialize_default();
+
+  temp_dir.join("ambient.d.ts").write(
+    r#"
+      declare module "$virtual/module" {
+        export const foo: number;
+      }
+      declare module "*.fake" {
+        const fake: string;
+        export default fake;
+      }
+
+    "#,
+  );
+  let source = source_file(
+    temp_dir.join("index.ts"),
+    r#"
+      /// <reference types="./ambient.d.ts"/>
+      import { foo as _foo } from "$virtual/module";
+      import _fake from "./not-real.fake";
+      import _bad from "./not-real.bad";
+    "#,
+  );
+  let diagnostics = client.did_open_file(&source);
+  assert_eq!(diagnostics.all().len(), 1);
+  assert_eq!(
+    json!(diagnostics.all()),
+    json!([
+      {
+        "range": source.range_of("\"./not-real.bad\""),
+        "severity": 1,
+        "code": "no-local",
+        "source": "deno",
+        "message": format!(
+          "Unable to load a local module: {}\nPlease check the file path.",
+          temp_dir.join("./not-real.bad").url_file()
+        )
+      }
+    ])
+  );
+}