diff --git a/decorators_test.go b/decorators_test.go
new file mode 100644
index 0000000..17b13b7
--- /dev/null
+++ b/decorators_test.go
@@ -0,0 +1,52 @@
+package mpb_test
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"strings"
+	"testing"
+
+	"github.com/vbauerster/mpb"
+)
+
+func TestPrependName(t *testing.T) {
+	var buf bytes.Buffer
+	p := mpb.New().SetOut(&buf)
+	wantName := "TestBar"
+	bar := p.AddBar(100).PrependName(wantName, 0, 0)
+	for i := 0; i < 100; i++ {
+		bar.Incr(1)
+	}
+	p.Stop()
+	if !strings.Contains(buf.String(), wantName) {
+		t.Errorf("%q not found in bar\n", wantName)
+	}
+}
+
+func TestPrependCounters(t *testing.T) {
+	var buf bytes.Buffer
+	p := mpb.New().SetOut(&buf)
+
+	reader := strings.NewReader(content)
+
+	total := int64(len(content))
+	bar := p.AddBar(total).TrimLeftSpace().TrimRightSpace().
+		PrependCounters("%3s / %3s", mpb.UnitBytes, 0, 0)
+	preader := bar.ProxyReader(reader)
+
+	_, err := io.Copy(ioutil.Discard, preader)
+	if err != nil {
+		t.Errorf("Error copying from reader: %+v\n", err)
+	}
+
+	p.Stop()
+
+	out := buf.String()
+	out = out[:strings.IndexRune(out, '[')]
+	want := fmt.Sprintf("%[1]db / %[1]db", total)
+	if out != want {
+		t.Errorf("Expected: %s, got %s\n", want, out)
+	}
+}