Add unit test

cli/lsp/language_server.rs

@@ -2487,6 +2487,54 @@ mod tests {
  );
  }
 
+ #[tokio::test]
+ async fn test_folding_range() {
+ let mut harness = LspTestHarness::new(vec![
+ ("initialize_request.json", LspResponse::RequestAny),
+ ("initialized_notification.json", LspResponse::None),
+ (
+ "folding_range_did_open_notification.json",
+ LspResponse::None,
+ ),
+ (
+ "folding_range_request.json",
+ LspResponse::Request(
+ 2,
+ json!([
+ {
+ "startLine": 0,
+ "endLine": 12,
+ "kind": "region"
+ },
+ {
+ "startLine": 1,
+ "endLine": 3,
+ "kind": "comment"
+ },
+ {
+ "startLine": 4,
+ "endLine": 10
+ },
+ {
+ "startLine": 5,
+ "endLine": 9
+ },
+ {
+ "startLine": 6,
+ "endLine": 7
+ }
+ ]),
+ ),
+ ),
+ (
+ "shutdown_request.json",
+ LspResponse::Request(3, json!(null)),
+ ),
+ ("exit_notification.json", LspResponse::None),
+ ]);
+ harness.run().await;
+ }
+
  #[tokio::test]
  async fn test_rename() {
  let mut harness = LspTestHarness::new(vec![

cli/tests/lsp/folding_range_did_open_notification.json

@@ -0,0 +1,12 @@
+{
+ "jsonrpc": "2.0",
+ "method": "textDocument/didOpen",
+ "params": {
+ "textDocument": {
+ "uri": "file:https:///a/file.ts",
+ "languageId": "typescript",
+ "version": 1,
+ "text": "// #region 1\n/*\n * Some comment\n */\nclass Foo {\n bar(a, b) {\n if (a === b) {\n return true;\n }\n return false;\n }\n}\n// #endregion"
+ }
+ }
+}

cli/tests/lsp/folding_range_request.json

@@ -0,0 +1,10 @@
+{
+ "jsonrpc": "2.0",
+ "id": 2,
+ "method": "textDocument/foldingRange",
+ "params": {
+ "textDocument": {
+ "uri": "file:https:///a/file.ts"
+ }
+ }
+}

cli/tests/lsp/initialize_request.json

@@ -37,6 +37,9 @@
  ]
  }
  },
+ "foldingRange": {
+ "lineFoldingOnly": true
+ },
  "synchronization": {
  "dynamicRegistration": true,
  "willSave": true,