fix test.

pkg/engine/gcs_test.go

@@ -4,6 +4,8 @@ import (
 	"strings"
 	"testing"
 
+	"github.com/stretchr/testify/assert"
+
 	"github.com/trufflesecurity/trufflehog/v3/pkg/context"
 	"github.com/trufflesecurity/trufflehog/v3/pkg/decoders"
 	"github.com/trufflesecurity/trufflehog/v3/pkg/sources"
@@ -59,27 +61,26 @@ func TestScanGCS(t *testing.T) {
 			ctx, cancel := context.WithCancel(context.TODO())
 			defer cancel()
 
-			e := Start(ctx,
+			e, err := Start(ctx,
 				WithConcurrency(1),
 				WithDecoders(decoders.DefaultDecoders()...),
 				WithDetectors(false, DefaultDetectors()...),
 			)
+			assert.Nil(t, err)
+
 			go func() {
 				resultCount := 0
 				for range e.ResultsChan() {
 					resultCount++
 				}
 			}()
 
-			err := e.ScanGCS(ctx, test.gcsConfig)
+			err = e.ScanGCS(ctx, test.gcsConfig)
 			if err != nil && !test.wantErr && !strings.Contains(err.Error(), "googleapi: Error 400: Bad Request") {
 				t.Errorf("ScanGCS() got: %v, want: %v", err, nil)
 				return
 			}
-			logFatalFunc := func(_ error, _ string, _ ...any) {
-				t.Fatalf("error logging function should not have been called")
-			}
-			e.Finish(ctx, logFatalFunc)
+			assert.Nil(t, e.Finish(ctx))
 
 			if err == nil && test.wantErr {
 				t.Errorf("ScanGCS() got: %v, want: %v", err, "error")