1 files changed, 50 insertions, 0 deletions
diff --git a/clang-tools-extra/clangd/test/signature-help-with-offsets.test b/clang-tools-extra/clangd/test/signature-help-with-offsets.test
new file mode 100644
index 00000000000..825dbc6c79b
--- /dev/null
+++ b/clang-tools-extra/clangd/test/signature-help-with-offsets.test
@@ -0,0 +1,50 @@
+# RUN: clangd -lit-test < %s | FileCheck -strict-whitespace %s
+# Start a session.
+{
+  "jsonrpc": "2.0",
+  "id": 0,
+  "method": "initialize",
+  "params": {
+    "processId": 123,
+    "rootPath": "clangd",
+    "capabilities": {
+      "textDocument": {
+        "signatureHelp": {
+          "signatureInformation": {
+            "parameterInformation": {
+              "labelOffsetSupport": true
+            }
+          }
+        }
+      }
+    },
+    "trace": "off"
+  }
+}
+---
+{"jsonrpc":"2.0","method":"textDocument/didOpen","params":{"textDocument":{"uri":"test:///main.cpp","languageId":"cpp","version":1,"text":"void x(int);\nint main(){\nx("}}}
+---
+{"jsonrpc":"2.0","id":1,"method":"textDocument/signatureHelp","params":{"textDocument":{"uri":"test:///main.cpp"},"position":{"line":2,"character":2}}}
+#      CHECK: "id": 1,
+# CHECK-NEXT: "jsonrpc": "2.0",
+# CHECK-NEXT: "result": {
+# CHECK-NEXT:   "activeParameter": 0,
+# CHECK-NEXT:   "activeSignature": 0,
+# CHECK-NEXT:   "signatures": [
+# CHECK-NEXT:     {
+# CHECK-NEXT:       "label": "x(int) -> void",
+# CHECK-NEXT:       "parameters": [
+# CHECK-NEXT:         {
+# CHECK-NEXT:           "label": [
+# CHECK-NEXT:                     2,
+# CHECK-NEXT:                     5
+# CHECK-NEXT:                    ]
+# CHECK-NEXT:         }
+# CHECK-NEXT:       ]
+# CHECK-NEXT:     }
+# CHECK-NEXT:   ]
+# CHECK-NEXT: }
+---
+{"jsonrpc":"2.0","id":100000,"method":"shutdown"}
+---
+{"jsonrpc":"2.0","method":"exit"}