diff --git a/packages/rest/tests/e2e/message.spec.ts b/packages/rest/tests/e2e/message.spec.ts
index 172938205..a9a6916fc 100644
--- a/packages/rest/tests/e2e/message.spec.ts
+++ b/packages/rest/tests/e2e/message.spec.ts
@@ -40,6 +40,36 @@ describe('[rest] Message related tests', () => {
     })
   })
 
+  describe('Managing reactions', async () => {
+    it('Should add a unicode reaction', async () => {
+      const message = await rest.sendMessage('1041029705790402611', { content: 'testing rate limit manager' })
+
+      await rest.addReaction(message.channelId, message.id, '📙')
+      const reacted = await rest.getMessage(message.channelId, message.id)
+      expect(reacted.reactions?.length).to.be.greaterThanOrEqual(1)
+
+      it('Should delete a unicode reaction', async () => {
+        await rest.deleteOwnReaction(message.channelId, message.id, '📙')
+        const reacted = await rest.getMessage(message.channelId, message.id)
+        expect(reacted.reactions?.length).to.be.equal(0)
+      })
+    })
+
+    // it('Should add a custom reaction', async () => {
+    //   const message = await rest.sendMessage('1041029705790402611', { content: 'testing rate limit manager' })
+
+    //   await rest.addReaction(message.channelId, message.id, '<:discordeno:785403373817823272>')
+    //   const reacted = await rest.getMessage(message.channelId, message.id)
+    //   expect(reacted.reactions?.length).to.be.greaterThanOrEqual(1)
+
+    //   it('Should delete a custom reaction', async () => {
+    //     await rest.deleteOwnReaction(message.channelId, message.id, '<:discordeno:785403373817823272>')
+    //     const reacted = await rest.getMessage(message.channelId, message.id)
+    //     expect(reacted.reactions?.length).to.be.equal(0)
+    //   })
+    // })
+  })
+
   describe('Rate limit manager testing', () => {
     it('Send 10 messages to 1 channel', async () => {
       await Promise.all(
diff --git a/packages/rest/tests/unit/manager.spec.ts b/packages/rest/tests/unit/manager.spec.ts
index 55bd39b30..ba526be57 100644
--- a/packages/rest/tests/unit/manager.spec.ts
+++ b/packages/rest/tests/unit/manager.spec.ts
@@ -1,8 +1,8 @@
 import { expect } from 'chai'
 import { afterEach, beforeEach, describe, it } from 'mocha'
 import sinon from 'sinon'
-import type { RestManager } from '../../src/types.js'
 import { createRestManager } from '../../src/manager.js'
+import type { RestManager } from '../../src/types.js'
 import { fakeToken as token } from '../constants.js'
 
 describe('[rest] manager', () => {
@@ -34,6 +34,15 @@ describe('[rest] manager', () => {
     it('With a base url', () => {
       expect(rest.baseUrl).to.be.equal(options.baseUrl)
     })
+
+    it('With a falsy token', () => {
+      expect(() => createRestManager({ token: '' })).throws()
+    })
+
+    it('With an application id', () => {
+      const subrest = createRestManager({ ...options, applicationId: '130136895395987456' })
+      expect(subrest.applicationId).to.be.equal(130136895395987456n)
+    })
   })
 
   describe('rest.simplifyUrl', () => {