# 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"}