Use HaveLen() matcher in unit tests

Author: ChunyiLyu

internal/resource/default_user_secret_test.go

@@ -76,15 +76,15 @@ var _ = Describe("DefaultUserSecret", func() {
 				Expect(string(username)).To(HavePrefix("default_user_"))
 				decoded, err := b64.URLEncoding.DecodeString(string(username))
 				Expect(err).NotTo(HaveOccurred())
-				Expect(len(decoded)).To(Equal(24))
+				Expect(decoded).To(HaveLen(24))
 			})
 
 			By("creating a rabbitmq password that is base64 encoded and 24 characters in length when decoded", func() {
 				password, ok = secret.Data["password"]
 				Expect(ok).To(BeTrue(), "Failed to find a key \"password\" in the generated Secret")
 				decodedPassword, err := b64.URLEncoding.DecodeString(string(password))
 				Expect(err).NotTo(HaveOccurred())
-				Expect(len(decodedPassword)).To(Equal(24))
+				Expect(decodedPassword).To(HaveLen(24))
 			})
 
 			By("Setting a host that corresponds to the service address", func() {

internal/resource/erlang_cookie_test.go

@@ -72,7 +72,7 @@ var _ = Describe("ErlangCookie", func() {
 			Expect(ok).NotTo(BeFalse())
 			decodedCookie, err := b64.URLEncoding.DecodeString(string(cookie))
 			Expect(err).NotTo(HaveOccurred())
-			Expect(len(decodedCookie)).To(Equal(24))
+			Expect(decodedCookie).To(HaveLen(24))
 		})
 	})