Implements NowPlayingRepository as an in-memory only struct

persistence/nowplaying_repository_test.go

@@ -0,0 +1,50 @@
+package persistence
+
+import (
+	"sync"
+
+	"github.com/cloudsonic/sonic-server/domain"
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+)
+
+var _ = Describe("NowPlayingRepository", func() {
+	var repo domain.NowPlayingRepository
+
+	BeforeEach(func() {
+		playerMap = sync.Map{}
+		repo = NewNowPlayingRepository()
+	})
+
+	It("enqueues and dequeues records", func() {
+		Expect(repo.Enqueue(&domain.NowPlayingInfo{PlayerId: 1, TrackID: "AAA"})).To(BeNil())
+		Expect(repo.Enqueue(&domain.NowPlayingInfo{PlayerId: 1, TrackID: "BBB"})).To(BeNil())
+
+		Expect(repo.Tail(1)).To(Equal(&domain.NowPlayingInfo{PlayerId: 1, TrackID: "AAA"}))
+		Expect(repo.Head(1)).To(Equal(&domain.NowPlayingInfo{PlayerId: 1, TrackID: "BBB"}))
+
+		Expect(repo.Count(1)).To(Equal(int64(2)))
+
+		Expect(repo.Dequeue(1)).To(Equal(&domain.NowPlayingInfo{PlayerId: 1, TrackID: "AAA"}))
+		Expect(repo.Count(1)).To(Equal(int64(1)))
+	})
+
+	It("handles multiple players", func() {
+		Expect(repo.Enqueue(&domain.NowPlayingInfo{PlayerId: 1, TrackID: "AAA"})).To(BeNil())
+		Expect(repo.Enqueue(&domain.NowPlayingInfo{PlayerId: 1, TrackID: "BBB"})).To(BeNil())
+
+		Expect(repo.Enqueue(&domain.NowPlayingInfo{PlayerId: 2, TrackID: "CCC"})).To(BeNil())
+		Expect(repo.Enqueue(&domain.NowPlayingInfo{PlayerId: 2, TrackID: "DDD"})).To(BeNil())
+
+		Expect(repo.GetAll()).To(Equal([]*domain.NowPlayingInfo{
+			{PlayerId: 1, TrackID: "BBB"},
+			{PlayerId: 2, TrackID: "DDD"},
+		}))
+
+		Expect(repo.Count(2)).To(Equal(int64(2)))
+		Expect(repo.Count(2)).To(Equal(int64(2)))
+
+		Expect(repo.Tail(1)).To(Equal(&domain.NowPlayingInfo{PlayerId: 1, TrackID: "AAA"}))
+		Expect(repo.Head(2)).To(Equal(&domain.NowPlayingInfo{PlayerId: 2, TrackID: "DDD"}))
+	})
+})