diff --git a/utils/jsonmessage_test.go b/utils/jsonmessage_test.go
new file mode 100644
index 0000000000..9421d97a86
--- /dev/null
+++ b/utils/jsonmessage_test.go
@@ -0,0 +1,24 @@
+package utils
+
+import (
+	"testing"
+)
+
+func TestError(t *testing.T) {
+	je := JSONError{404, "Not found"}
+	if je.Error() != "Not found" {
+		t.Fatalf("Expected 'Not found' got '%s'", je.Error())
+	}
+}
+
+func TestProgress(t *testing.T) {
+	jp := JSONProgress{0, 0, 0}
+	if jp.String() != "" {
+		t.Fatalf("Expected empty string, got '%s'", jp.String())
+	}
+
+	jp2 := JSONProgress{1, 0, 0}
+	if jp2.String() != "     1 B/?" {
+		t.Fatalf("Expected '     1/?', got '%s'", jp2.String())
+	}
+}