diff --git a/packages/actions/test/e2e/00-authentication.test.ts b/packages/actions/test/e2e/00-authentication.test.ts
index dc966a47..bb446819 100644
--- a/packages/actions/test/e2e/00-authentication.test.ts
+++ b/packages/actions/test/e2e/00-authentication.test.ts
@@ -51,7 +51,6 @@ describe("Authentication", () => {
         expect(currentAuthenticatedUser.emailVerified).to.be.equal(user.data.emailVerified)
         expect(currentAuthenticatedUser.emailVerified).to.be.equal(data?.emailVerified)
         expect(currentAuthenticatedUser.displayName).to.be.null // due to mail/pw provider.
-        // expect(currentAuthenticatedUser.displayName).to.be.equal(data?.displayName)
         expect(currentAuthenticatedUser.photoURL).to.be.null // due to mail/pw provider.
         expect(data?.photoURL).to.be.empty // due to mail/pw provider.
         expect(new Date(String(currentAuthenticatedUser.metadata.creationTime)).valueOf()).to.be.equal(
@@ -67,6 +66,7 @@ describe("Authentication", () => {
         const disabledRecord = await adminAuth.updateUser(user.uid, { disabled: true })
         expect(disabledRecord.disabled).to.be.true
 
+        // Try to authenticate with the disabled user.
         await expect(signInWithEmailAndPassword(userAuth, user.data.email, userPassword)).to.be.rejectedWith(
             "Firebase: Error (auth/user-disabled)."
         )
@@ -79,18 +79,21 @@ describe("Authentication", () => {
     })
 
     it("should not be possible to authenticate with an incorrect password", async () => {
+        // Try to authenticate with the wrong password.
         await expect(signInWithEmailAndPassword(userAuth, user.data.email, "wrongPassword")).to.be.rejectedWith(
             "Firebase: Error (auth/wrong-password)."
         )
     })
 
     it("should not be possible to authenticate with an incorrect email", async () => {
+        // Try to authenticate with the wrong email.
         await expect(signInWithEmailAndPassword(userAuth, "wrongEmail", userPassword)).to.be.rejected
     })
 
     it("should not be possible to authenticate if Firebase is unreachable", async () => {
         // @todo mock unreachable firebase.
     })
+
     it("should not be possible to authenticate twice", async () => {
         // @todo Implement checks to prevent double authentication.
     })
diff --git a/packages/actions/test/utils/authentication.ts b/packages/actions/test/utils/authentication.ts
index 8cfdcb53..a78da120 100644
--- a/packages/actions/test/utils/authentication.ts
+++ b/packages/actions/test/utils/authentication.ts
@@ -35,6 +35,7 @@ export const createNewFirebaseUserWithEmailAndPw = async (
  * @param gmailRefreshToken <string> - the GMail refresh token.
  * @dev You should have the GMail APIs for OAuth2.0 must be enabled and configured properly in order to get correct results.
  * @returns <Promise<string>> - return the 6 digits verification code needed to complete the access with Github.
+ * @todo this method will not be used for testing right now. See PR #286 and #289 for info.
  */
 export const getLastGithubVerificationCode = async (
     gmailUserEmail: string,
@@ -78,9 +79,9 @@ export const getLastGithubVerificationCode = async (
 /**
  * Simulate callback to manage the data requested for Github OAuth2.0 device flow.
  * @param verification <Verification> - the data from Github OAuth2.0 device flow.
+ * @todo this method will not be used for testing right now. See PR #286 and #289 for info.
  */
 export const simulateOnVerification = async (verification: Verification): Promise<any> => {
-    // NB. this method will not be used for testing right now. See PR #286 for info.
     // 0.A Prepare data and plugins.
     const { userEmail, githubUserPw, gmailClientId, gmailClientSecret, gmailRedirectUrl, gmailRefreshToken } =
         getAuthenticationConfiguration()
@@ -198,9 +199,9 @@ export const simulateOnVerification = async (verification: Verification): Promis
 /**
  * Simulate callback to cancel authorization for Github OAuth2.0 device flow.
  * @param verification <Verification> - the data from Github OAuth2.0 device flow.
+ * @todo this method will not be used for testing right now. See PR #286 and #289 for info.
  */
 export const simulateCancelledOnVerification = async (verification: Verification): Promise<any> => {
-    // NB. this method will not be used for testing right now. See PR #286 for info.
     // 0.A Prepare data and plugins.
     const { userEmail, githubUserPw, gmailClientId, gmailClientSecret, gmailRedirectUrl, gmailRefreshToken } =
         getAuthenticationConfiguration()
@@ -311,9 +312,9 @@ export const simulateCancelledOnVerification = async (verification: Verification
 /**
  * Simulate callback sending an invalid device code for Github OAuth2.0 device flow.
  * @param verification <Verification> - the data from Github OAuth2.0 device flow.
+ * @todo this method will not be used for testing right now. See PR #286 and #289 for info.
  */
 export const simulateInvalidTokenOnVerification = async (verification: Verification): Promise<any> => {
-    // NB. this method will not be used for testing right now. See PR #286 for info.
     // 0.A Prepare data and plugins.
     const { userEmail, githubUserPw, gmailClientId, gmailClientSecret, gmailRedirectUrl, gmailRefreshToken } =
         getAuthenticationConfiguration()
@@ -418,10 +419,10 @@ export const simulateInvalidTokenOnVerification = async (verification: Verificat
 /**
  * Simulate callback for unreachable GitHub website for Github OAuth2.0 device flow.
  * @param verification <Verification> - the data from Github OAuth2.0 device flow.
+ * @todo this method will not be used for testing right now. See PR #286 and #289 for info.
  */
 /* eslint-disable @typescript-eslint/no-unused-vars */
 export const simulateUnreachablePageOnVerification = async (verification: Verification): Promise<any> => {
-    // NB. this method will not be used for testing right now. See PR #286 for info.
     puppeteerExtra.use(stealthMode())
     puppeteerExtra.use(anonUserAgent({ stripHeadless: true }))
 
@@ -474,6 +475,7 @@ export const simulateUnreachablePageOnVerification = async (verification: Verifi
  * @param userApp <FirebaseApp> - the Firebase user Application instance.
  * @param clientId <string> - the Github client id.
  * @returns <Promise<UserCredential>> - the credential of the user after the handshake with Firebase.
+ * @todo this method will not be used for testing right now. See PR #286 and #289 for info.
  */
 export const authenticateUserWithGithub = async (userApp: FirebaseApp, clientId: string): Promise<UserCredential> => {
     const clientType = "oauth-app"
diff --git a/packages/actions/test/utils/index.ts b/packages/actions/test/utils/index.ts
index 7f9358d6..0da9c490 100644
--- a/packages/actions/test/utils/index.ts
+++ b/packages/actions/test/utils/index.ts
@@ -9,12 +9,4 @@ export {
     generatePseudoRandomStringOfNumbers
 } from "./configs"
 
-export {
-    createNewFirebaseUserWithEmailAndPw,
-    getLastGithubVerificationCode,
-    simulateOnVerification,
-    authenticateUserWithGithub,
-    simulateCancelledOnVerification,
-    simulateUnreachablePageOnVerification,
-    simulateInvalidTokenOnVerification
-} from "./authentication"
+export { createNewFirebaseUserWithEmailAndPw } from "./authentication"