disabling pdfcpu logs (#22)

internal/pkg/printer/printer.go

@@ -5,9 +5,16 @@ import (
 	"io/ioutil"
 
 	pdfcpuAPI "github.com/hhrutter/pdfcpu/pkg/api"
+	pdfcpuLog "github.com/hhrutter/pdfcpu/pkg/log"
 	pdfcpuConfig "github.com/hhrutter/pdfcpu/pkg/pdfcpu"
 )
 
+func init() {
+	// disable loggers when merging
+	// PDFs.
+	pdfcpuLog.DisableLoggers()
+}
+
 // Printer is a type that can create a PDF file from a source.
 // The source is defined in the underlying implementation.
 type Printer interface {

internal/pkg/printer/printer_test.go

@@ -16,7 +16,7 @@ func TestMerge(t *testing.T) {
 	err := Merge(
 		[]string{
 			fmt.Sprintf("%s/%s", dirPath, "gotenberg.pdf"),
-			fmt.Sprintf("%s/%s", dirPath, "gotenberg.pdf"),
+			fmt.Sprintf("%s/%s", dirPath, "gotenberg_bis.pdf"),
 		},
 		dst,
 	)