lsp: limit to one in-flight LLM query; return visible 'LLM busy' completion item with provider/model; retain chat EOL suppression

1 files changed, 25 insertions, 0 deletions

diff --git a/internal/lsp/llm_busy_test.go b/internal/lsp/llm_busy_test.go
new file mode 100644
index 0000000..95123d2
--- /dev/null
+++ b/internal/lsp/llm_busy_test.go
@@ -0,0 +1,25 @@
+package lsp
+
+import (
+    "encoding/json"
+    "testing"
+)
+
+// Ensure a visible busy item is returned when a prior LLM request is in flight.
+func TestLLMBusy_YieldsBusyCompletionItem(t *testing.T) {
+    s := &Server{ maxTokens: 32, triggerChars: []string{"."}, compCache: make(map[string]string) }
+    s.llmClient = &countingLLM{}
+    // Mark busy
+    s.setLLMBusy(true)
+    t.Cleanup(func(){ s.setLLMBusy(false) })
+    line := "obj."
+    p := CompletionParams{ Position: Position{ Line: 0, Character: len(line) }, TextDocument: TextDocumentIdentifier{URI: "file://busy.go"} }
+    // Simulate manual invoke to bypass min-prefix
+    p.Context = json.RawMessage([]byte(`{"triggerKind":1}`))
+    items, ok := s.tryLLMCompletion(p, "", line, "", "", "", false, "")
+    if !ok { t.Fatalf("expected ok=true") }
+    if len(items) != 1 { t.Fatalf("expected one busy item, got %d", len(items)) }
+    if items[0].InsertText != "" { t.Fatalf("busy item should not insert text") }
+    if items[0].Label == "" { t.Fatalf("busy item should have a label") }
+}
+