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package lsp
import (
"bytes"
"log"
"strings"
"testing"
"hexai/internal/logging"
)
func TestCompletionCache_IgnoresWhitespaceBeforeCursor(t *testing.T) {
var buf bytes.Buffer
logger := log.New(&buf, "", 0)
s := NewServer(bytes.NewBuffer(nil), &buf, logger, ServerOptions{})
logging.Bind(logger)
s.triggerChars = []string{" ", "."}
fake := &countingLLM{}
s.llmClient = fake
// First request with trailing spaces before cursor
line := "foo "
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 != 1 {
t.Fatalf("expected first call to invoke LLM; ok=%v len=%d calls=%d", ok, len(items), fake.calls)
}
// Same logical context but with a different amount of trailing whitespace
line2 := "foo "
p2 := CompletionParams{ Position: Position{ Line: 0, Character: len(line2) }, TextDocument: TextDocumentIdentifier{URI: "file://x.go"} }
items2, ok2 := s.tryLLMCompletion(p2, "", line2, "", "", "", false, "")
if !ok2 || len(items2) == 0 {
t.Fatalf("expected cache hit to still return items")
}
if fake.calls != 1 {
t.Fatalf("expected cache hit to avoid LLM call; calls=%d", fake.calls)
}
if !strings.Contains(buf.String(), "completion cache hit") {
t.Fatalf("expected log to contain cache hit message, got: %s", buf.String())
}
}
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