navidrome/scanner/metadata/metadata_test.go

package metadata

import (
	"github.com/navidrome/navidrome/conf"
	. "github.com/onsi/ginkgo/v2"
	. "github.com/onsi/gomega"
)

var _ = Describe("Tags", func() {
	Context("Extract", func() {
		BeforeEach(func() {
			conf.Server.Scanner.Extractor = "taglib"
		})

		It("correctly parses metadata from all files in folder", func() {
			mds, err := Extract("tests/fixtures/test.mp3", "tests/fixtures/test.ogg")
			Expect(err).NotTo(HaveOccurred())
			Expect(mds).To(HaveLen(2))

			m := mds["tests/fixtures/test.mp3"]
			Expect(m.Title()).To(Equal("Song"))
			Expect(m.Album()).To(Equal("Album"))
			Expect(m.Artist()).To(Equal("Artist"))
			Expect(m.AlbumArtist()).To(Equal("Album Artist"))
			Expect(m.Compilation()).To(BeTrue())
			Expect(m.Genres()).To(Equal([]string{"Rock"}))
			Expect(m.Year()).To(Equal(2014))
			n, t := m.TrackNumber()
			Expect(n).To(Equal(2))
			Expect(t).To(Equal(10))
			n, t = m.DiscNumber()
			Expect(n).To(Equal(1))
			Expect(t).To(Equal(2))
			Expect(m.HasPicture()).To(BeTrue())
			Expect(m.Duration()).To(BeNumerically("~", 1.02, 0.01))
			Expect(m.BitRate()).To(Equal(192))
			Expect(m.Channels()).To(Equal(2))
			Expect(m.FilePath()).To(Equal("tests/fixtures/test.mp3"))
			Expect(m.Suffix()).To(Equal("mp3"))
			Expect(m.Size()).To(Equal(int64(51876)))

			m = mds["tests/fixtures/test.ogg"]
			Expect(err).To(BeNil())
			Expect(m.Title()).To(BeEmpty())
			Expect(m.HasPicture()).To(BeFalse())
			Expect(m.Duration()).To(BeNumerically("~", 1.04, 0.01))
			Expect(m.Suffix()).To(Equal("ogg"))
			Expect(m.FilePath()).To(Equal("tests/fixtures/test.ogg"))
			Expect(m.Size()).To(Equal(int64(5065)))
			// TabLib 1.12 returns 18, previous versions return 39.
			// See https://github.com/taglib/taglib/commit/2f238921824741b2cfe6fbfbfc9701d9827ab06b
			Expect(m.BitRate()).To(BeElementOf(18, 39))
		})
	})

	Describe("getYear", func() {
		It("parses the year correctly", func() {
			var examples = map[string]int{
				"1985":         1985,
				"2002-01":      2002,
				"1969.06":      1969,
				"1980.07.25":   1980,
				"2004-00-00":   2004,
				"2013-May-12":  2013,
				"May 12, 2016": 2016,
				"01/10/1990":   1990,
			}
			for tag, expected := range examples {
				md := &Tags{}
				md.tags = map[string][]string{"date": {tag}}
				Expect(md.Year()).To(Equal(expected))
			}
		})

		It("returns 0 if year is invalid", func() {
			md := &Tags{}
			md.tags = map[string][]string{"date": {"invalid"}}
			Expect(md.Year()).To(Equal(0))
		})
	})

	Describe("getMbzID", func() {
		It("return a valid MBID", func() {
			md := &Tags{}
			md.tags = map[string][]string{
				"musicbrainz_trackid":       {"8f84da07-09a0-477b-b216-cc982dabcde1"},
				"musicbrainz_albumid":       {"f68c985d-f18b-4f4a-b7f0-87837cf3fbf9"},
				"musicbrainz_artistid":      {"89ad4ac3-39f7-470e-963a-56509c546377"},
				"musicbrainz_albumartistid": {"ada7a83c-e3e1-40f1-93f9-3e73dbc9298a"},
			}
			Expect(md.MbzTrackID()).To(Equal("8f84da07-09a0-477b-b216-cc982dabcde1"))
			Expect(md.MbzAlbumID()).To(Equal("f68c985d-f18b-4f4a-b7f0-87837cf3fbf9"))
			Expect(md.MbzArtistID()).To(Equal("89ad4ac3-39f7-470e-963a-56509c546377"))
			Expect(md.MbzAlbumArtistID()).To(Equal("ada7a83c-e3e1-40f1-93f9-3e73dbc9298a"))
		})
		It("return empty string for invalid MBID", func() {
			md := &Tags{}
			md.tags = map[string][]string{
				"musicbrainz_trackid":       {"11406732-6"},
				"musicbrainz_albumid":       {"11406732"},
				"musicbrainz_artistid":      {"200455"},
				"musicbrainz_albumartistid": {"194"},
			}
			Expect(md.MbzTrackID()).To(Equal(""))
			Expect(md.MbzAlbumID()).To(Equal(""))
			Expect(md.MbzArtistID()).To(Equal(""))
			Expect(md.MbzAlbumArtistID()).To(Equal(""))
		})
	})

	Describe("getAllTagValues", func() {
		It("returns values from all tag names", func() {
			md := &Tags{}
			md.tags = map[string][]string{
				"genre": {"Rock", "Pop", "New Wave"},
			}

			Expect(md.Genres()).To(ConsistOf("Rock", "Pop", "New Wave"))
		})
	})

	Describe("Bpm", func() {
		var t *Tags
		BeforeEach(func() {
			t = &Tags{tags: map[string][]string{
				"fbpm": []string{"141.7"},
			}}
		})

		It("rounds a floating point fBPM tag", func() {
			Expect(t.Bpm()).To(Equal(142))
		})
	})
})