Add GetGenre endpoint

persistence/genre_repository_test.go

@@ -0,0 +1,22 @@
+package persistence
+
+import (
+	"github.com/cloudsonic/sonic-server/model"
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+)
+
+var _ = Describe("GenreRepository", func() {
+	var repo model.GenreRepository
+
+	BeforeEach(func() {
+		repo = NewGenreRepository()
+	})
+
+	It("returns all records", func() {
+		genres, err := repo.GetAll()
+		Expect(err).To(BeNil())
+		Expect(genres).To(ContainElement(model.Genre{Name: "Rock", AlbumCount: 2, SongCount: 2}))
+		Expect(genres).To(ContainElement(model.Genre{Name: "Electronic", AlbumCount: 1, SongCount: 2}))
+	})
+})