fix: tests in ci

internal/transcriber/adapter_whisper_cpp.go

@@ -36,17 +36,17 @@ func (a *WhisperCppAdapter) Transcribe(ctx context.Context, audioData []byte) (s
 		return "", nil
 	}
 
+	// check model file exists
+	if _, err := os.Stat(a.modelPath); os.IsNotExist(err) {
+		return "", fmt.Errorf("model file not found: %s", a.modelPath)
+	}
+
 	// check whisper-cli exists
 	whisperPath, err := exec.LookPath("whisper-cli")
 	if err != nil {
 		return "", fmt.Errorf("whisper-cli not found: install whisper.cpp first")
 	}
 
-	// check model file exists
-	if _, err := os.Stat(a.modelPath); os.IsNotExist(err) {
-		return "", fmt.Errorf("model file not found: %s", a.modelPath)
-	}
-
 	// convert raw PCM to WAV
 	wavData, err := convertToWAV(audioData)
 	if err != nil {

internal/transcriber/adapter_whisper_cpp_test.go

@@ -3,6 +3,7 @@ package transcriber
 import (
 	"context"
 	"os"
+	"os/exec"
 	"path/filepath"
 	"testing"
 )
@@ -38,6 +39,29 @@ func TestWhisperCppAdapter_MissingModel(t *testing.T) {
 	}
 }
 
+func TestWhisperCppAdapter_MissingCli(t *testing.T) {
+	if _, err := exec.LookPath("whisper-cli"); err == nil {
+		t.Skip("whisper-cli is installed")
+	}
+
+	tmpDir := t.TempDir()
+	modelPath := filepath.Join(tmpDir, "model.bin")
+	if err := os.WriteFile(modelPath, []byte("fake"), 0600); err != nil {
+		t.Fatalf("failed to create model: %v", err)
+	}
+
+	adapter := NewWhisperCppAdapter(modelPath, "en", 4)
+	audioData := make([]byte, 32000)
+
+	_, err := adapter.Transcribe(context.Background(), audioData)
+	if err == nil {
+		t.Error("expected error for missing whisper-cli")
+	}
+	if err != nil && !contains(err.Error(), "whisper-cli not found") {
+		t.Errorf("expected 'whisper-cli not found' error, got: %v", err)
+	}
+}
+
 func TestWhisperCppAdapter_LanguageConversion(t *testing.T) {
 	// verify adapter stores language for later conversion
 	adapter := NewWhisperCppAdapter("/fake/model.bin", "", 4)