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package lsp
import (
"bytes"
"context"
"log"
"testing"
"hexai/internal/llm"
)
// countingLLM counts Chat calls; minimal implementation for tests.
type countingLLM struct{ calls int }
func (f *countingLLM) Chat(_ context.Context, _ []llm.Message, _ ...llm.RequestOption) (string, error) {
f.calls++
return "x := 1", nil
}
func (f *countingLLM) Name() string { return "fake" }
func (f *countingLLM) DefaultModel() string { return "m" }
func TestDefaultTriggerChars_DoesNotIncludeSemicolonOrQuestion(t *testing.T) {
var buf bytes.Buffer
logger := log.New(&buf, "", 0)
s := NewServer(bytes.NewBuffer(nil), &buf, logger, ServerOptions{})
has := func(ch string) bool {
for _, c := range s.triggerChars {
if c == ch { return true }
}
return false
}
if has(";") || has("?") {
t.Fatalf("default trigger chars should not include ';' or '?' got=%v", s.triggerChars)
}
}
func TestTryLLMCompletion_BusySkipsConcurrent(t *testing.T) {
s := &Server{ maxTokens: 32 }
fake := &countingLLM{}
s.llmClient = fake
// Simulate another LLM request in flight
s.llmBusy = true
p := CompletionParams{ Position: Position{ Line: 0, Character: 3 }, TextDocument: TextDocumentIdentifier{URI: "file://x.go"} }
items, ok := s.tryLLMCompletion(p, "", "foo", "", "", "", false, "")
if !ok {
t.Fatalf("expected ok=true when busy guard skips")
}
if len(items) != 0 {
t.Fatalf("expected zero items when busy, got %d", len(items))
}
if fake.calls != 0 {
t.Fatalf("LLM Chat should not be called when busy; calls=%d", fake.calls)
}
}
func TestTryLLMCompletion_MinPrefixSkipsEarly(t *testing.T) {
s := &Server{ maxTokens: 32 }
fake := &countingLLM{}
s.llmClient = fake
// Zero identifier characters before cursor
p := CompletionParams{ Position: Position{ Line: 0, Character: 0 }, TextDocument: TextDocumentIdentifier{URI: "file://x.go"} }
items, ok := s.tryLLMCompletion(p, "", "", "", "", "", false, "")
if !ok {
t.Fatalf("expected ok=true when skipped by min-prefix heuristic")
}
if len(items) != 0 {
t.Fatalf("expected zero items when min-prefix not satisfied")
}
if fake.calls != 0 {
t.Fatalf("LLM Chat should not be called when min-prefix not met; calls=%d", fake.calls)
}
}
func TestTryLLMCompletion_AllowsAfterTrailingSpace(t *testing.T) {
s := &Server{ maxTokens: 32 }
fake := &countingLLM{}
s.llmClient = fake
line := "type Matrix "
// Cursor after trailing space
p := CompletionParams{ Position: Position{ Line: 0, Character: len(line) }, TextDocument: TextDocumentIdentifier{URI: "file://x.go"} }
items, ok := s.tryLLMCompletion(p, "", line, "", "", "", false, "")
if !ok || len(items) == 0 || fake.calls == 0 {
t.Fatalf("expected completion allowed after trailing space; ok=%v len=%d calls=%d", ok, len(items), fake.calls)
}
}
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