Add tests for album model

internal/models/album_test.go

@@ -0,0 +1,19 @@
+package models
+
+import (
+	"github.com/stretchr/testify/assert"
+	"testing"
+)
+
+func TestNewAlbum(t *testing.T) {
+	t.Run("name Christmas 2018", func(t *testing.T) {
+		album := NewAlbum("Christmas 2018")
+		assert.Equal(t, "Christmas 2018", album.AlbumName)
+		assert.Equal(t, "christmas-2018", album.AlbumSlug)
+	})
+	t.Run("name empty", func(t *testing.T) {
+		album := NewAlbum("")
+		assert.Equal(t, "New Album", album.AlbumName)
+		assert.Equal(t, "new-album", album.AlbumSlug)
+	})
+}