Started the big refactor to extract common logic from engine package (Subsonic only) to core package (more generic)

core/file_caches_test.go

@@ -0,0 +1,37 @@
+package core
+
+import (
+	"io/ioutil"
+	"os"
+	"path/filepath"
+
+	"github.com/deluan/navidrome/conf"
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+)
+
+var _ = Describe("File Caches", func() {
+	BeforeEach(func() {
+		conf.Server.DataFolder, _ = ioutil.TempDir("", "file_caches")
+	})
+	AfterEach(func() {
+		os.RemoveAll(conf.Server.DataFolder)
+	})
+
+	Describe("newFileCache", func() {
+		It("creates the cache folder", func() {
+			Expect(newFileCache("test", "1k", "test", 10)).ToNot(BeNil())
+
+			_, err := os.Stat(filepath.Join(conf.Server.DataFolder, "test"))
+			Expect(os.IsNotExist(err)).To(BeFalse())
+		})
+
+		It("creates the cache folder with invalid size", func() {
+			Expect(newFileCache("test", "abc", "test", 10)).ToNot(BeNil())
+		})
+
+		It("returns empty if cache size is '0'", func() {
+			Expect(newFileCache("test", "0", "test", 10)).To(BeNil())
+		})
+	})
+})