adding merge printer tests

internal/pkg/printer/merge_test.go

@@ -0,0 +1,46 @@
+package printer
+
+import (
+	"os"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/thecodingmachine/gotenberg/internal/pkg/xerror"
+	"github.com/thecodingmachine/gotenberg/internal/pkg/xlog"
+	"github.com/thecodingmachine/gotenberg/test/internalpkg/printertest"
+	"github.com/thecodingmachine/gotenberg/test/internalpkg/xerrortest"
+	"github.com/thecodingmachine/gotenberg/test/internalpkg/xlogtest"
+)
+
+func TestMergePrinter(t *testing.T) {
+	var (
+		logger xlog.Logger = xlogtest.DebugLogger()
+		fpaths []string    = printertest.MergeFpaths(t)
+		opts   MergePrinterOptions
+		dest   string
+		p      Printer
+		err    error
+	)
+	// default options.
+	opts = MergePrinterOptions{
+		WaitTimeout: 10.0,
+	}
+	p = NewMergePrinter(logger, fpaths, opts)
+	dest = printertest.GenerateDestination()
+	err = p.Print(dest)
+	assert.Nil(t, err)
+	err = os.RemoveAll(dest)
+	assert.Nil(t, err)
+	// should not be OK as context.Context
+	// should timeout.
+	opts = MergePrinterOptions{
+		WaitTimeout: 0.1,
+	}
+	p = NewMergePrinter(logger, fpaths, opts)
+	dest = printertest.GenerateDestination()
+	err = p.Print(dest)
+	xerrortest.AssertError(t, err)
+	assert.Equal(t, xerror.TimeoutCode, xerror.Code(err))
+	err = os.RemoveAll(dest)
+	assert.Nil(t, err)
+}