Refactor FileCache, allow disabling Trasncoding cache

core/file_caches_test.go

@@ -18,20 +18,30 @@ var _ = Describe("File Caches", func() {
 		os.RemoveAll(conf.Server.DataFolder)
 	})
 
-	Describe("newFileCache", func() {
+	Describe("NewFileCache", func() {
 		It("creates the cache folder", func() {
-			Expect(newFileCache("test", "1k", "test", 10)).ToNot(BeNil())
+			Expect(NewFileCache("test", "1k", "test", 10, nil)).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())
+			fc, err := NewFileCache("test", "abc", "test", 10, nil)
+			Expect(err).To(BeNil())
+			Expect(fc.cache).ToNot(BeNil())
+			Expect(fc.disabled).To(BeFalse())
 		})
 
 		It("returns empty if cache size is '0'", func() {
-			Expect(newFileCache("test", "0", "test", 10)).To(BeNil())
+			fc, err := NewFileCache("test", "0", "test", 10, nil)
+			Expect(err).To(BeNil())
+			Expect(fc.cache).To(BeNil())
+			Expect(fc.disabled).To(BeTrue())
 		})
 	})
+
+	Describe("FileCache", func() {
+
+	})
 })