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package lsp
import (
"bytes"
"encoding/json"
"strings"
"testing"
)
func TestHandleCompletionRespectsDisableCommand(t *testing.T) {
s := newTestServer()
var buf bytes.Buffer
s.out = &buf
// Disable completions and trigger handler
s.setCompletionsDisabled(true)
params := CompletionParams{TextDocument: TextDocumentIdentifier{URI: "file:///test.go"}, Position: Position{Line: 0, Character: 0}}
req := Request{JSONRPC: "2.0", ID: json.RawMessage("1"), Method: "textDocument/completion", Params: mustJSON(params)}
s.handleCompletion(req)
payload := buf.String()
parts := strings.SplitN(payload, "\r\n\r\n", 2)
if len(parts) != 2 {
t.Fatalf("unexpected response framing: %q", payload)
}
var resp Response
if err := json.Unmarshal([]byte(parts[1]), &resp); err != nil {
t.Fatalf("unmarshal response: %v", err)
}
resultMap, ok := resp.Result.(map[string]any)
if !ok {
t.Fatalf("expected map result, got %T", resp.Result)
}
switch v := resultMap["items"].(type) {
case []any:
if len(v) != 0 {
t.Fatalf("expected no completion items when disabled, got %d", len(v))
}
case nil:
// ok: encoder emitted null for slice
default:
t.Fatalf("expected items slice or null, got %T", v)
}
}
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