Sam McCall 682cfe704d [clangd] Hover should return null when not hovering over anything.
Summary: Also made JSON serialize Optional<T> to simplify this.

Reviewers: ioeric

Subscribers: klimek, ilya-biryukov, MaskRay, jkorous, cfe-commits

Differential Revision: https://reviews.llvm.org/D47701

llvm-svn: 333881
2018-06-04 10:37:16 +00:00

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# RUN: clangd -lit-test < %s | FileCheck %s
{"jsonrpc":"2.0","id":0,"method":"initialize","params":{"processId":123,"rootPath":"clangd","capabilities":{},"trace":"off"}}
---
{"jsonrpc":"2.0","method":"textDocument/didOpen","params":{"textDocument":{"uri":"test:///main.cpp","languageId":"cpp","version":1,"text":"void foo(); int main() { foo(); }\n"}}}
---
{"jsonrpc":"2.0","id":1,"method":"textDocument/hover","params":{"textDocument":{"uri":"test:///main.cpp"},"position":{"line":0,"character":27}}}
# CHECK: "id": 1,
# CHECK-NEXT: "jsonrpc": "2.0",
# CHECK-NEXT: "result": {
# CHECK-NEXT: "contents": {
# CHECK-NEXT: "kind": "plaintext",
# CHECK-NEXT: "value": "Declared in global namespace\n\nvoid foo()"
# CHECK-NEXT: }
# CHECK-NEXT: }
# CHECK-NEXT:}
---
{"jsonrpc":"2.0","id":1,"method":"textDocument/hover","params":{"textDocument":{"uri":"test:///main.cpp"},"position":{"line":0,"character":10}}}
# CHECK: "id": 1,
# CHECK-NEXT: "jsonrpc": "2.0",
# CHECK-NEXT: "result": null
---
{"jsonrpc":"2.0","id":3,"method":"shutdown"}
---
{"jsonrpc":"2.0","method":"exit"}