package models import ( "testing" "time" "github.com/stretchr/testify/assert" ) func TestFile_DownloadFileName(t *testing.T) { photo := &Photo{TakenAt: time.Date(2019, 01, 15, 0, 0, 0, 0, time.UTC), PhotoTitle: "Berlin / Morning Mood"} file := &File{Photo: photo, FileType: "jpg"} filename := file.DownloadFileName() assert.Equal(t, "20190115-000000-Berlin-Morning-Mood.jpg", filename) }