diff --git a/components/Modal/index.spec.js b/components/Modal/index.spec.js
new file mode 100644
index 00000000..df15227b
--- /dev/null
+++ b/components/Modal/index.spec.js
@@ -0,0 +1,92 @@
+/**
+ * @jest-environment jsdom
+ */
+import { render, screen, fireEvent, waitFor } from '@testing-library/react'
+import Modal from './index'
+import '@testing-library/jest-dom'
+import { serverTimestamp } from 'firebase/firestore'
+import { getUserFromFirestore } from '../../lib/user'
+import { getAllCohorts, getCurrentCohort } from '../../lib/cohorts'
+
+jest.mock('uuidv4', () => ({ uuid: jest.fn() }))
+jest.mock('react-i18next', () => ({
+  useTranslation: () => ({ t: (key) => key, i18n: { resolvedLanguage: 'en' } }),
+}))
+jest.mock('../../lib/user')
+jest.mock('../../lib/cohorts')
+
+describe('Check if submit link is calling mintNFT function', () => {
+  const mockOnClose = jest.fn()
+
+  const mockSubmission = {
+    course: { id: 'Rust_State_Machine' },
+    title: 'Upload Assignment',
+    text: 'Submit your assignment',
+    type: 'text',
+  }
+
+  const lessonSubmission = {
+    cohort_id: 'RU5mLpQrZZWlmftNSB2w',
+    content: { type: 'text', value: 'Conteúdo aleatório para teste' },
+    createdAt: serverTimestamp(),
+    lesson: 'Lesson_2_Add_State.md',
+    section: 'Section_1',
+  }
+  const mockUser = {
+    uid: '27mBUecPdbEjIDdFfzYPQiQ9Uyqr',
+    cohorts: [{ cohort_id: 'RU5mLpQrZZWlmftNSB2w', course_id: 'Rust_State_Machine' }],
+  }
+  const mockCohort = {
+    id: 'RU5mLpQrZZWlmftNSB2w',
+    startDate: Date.now() + 86400000 * 7,
+    endDate: Date.now() + 86400000 * 7 + 3600000,
+    kickoffStartTime: Date.now() + 86400000 * 7,
+    kickoffEndTime: Date.now() + 86400000 * 7 + 3600000,
+  }
+
+  beforeAll(() => {
+    global.fetch = jest.fn(() =>
+      Promise.resolve({ json: () => Promise.resolve({ data: 'fake data' }) })
+    )
+    global.IntersectionObserver = class {
+      observe() {}
+      unobserve() {}
+      disconnect() {}
+    }
+  })
+
+  beforeEach(() => {
+    jest.clearAllMocks()
+    getAllCohorts.mockResolvedValue([mockCohort])
+    getCurrentCohort.mockReturnValue(mockCohort)
+    getUserFromFirestore.mockResolvedValue(mockUser)
+  })
+
+  const setupModal = () => {
+    render(
+      <Modal
+        openExternal
+        onClose={mockOnClose}
+        course={mockSubmission.course}
+        lesson={lessonSubmission.lesson}
+        section={lessonSubmission.section}
+        submissionType={mockSubmission.type}
+        submissionTitle={mockSubmission.title}
+        submissionText={mockSubmission.text}
+      />
+    )
+  }
+
+  it('should display modal content correctly', () => {
+    setupModal()
+    expect(screen.getByText(mockSubmission.title)).toBeInTheDocument()
+    expect(screen.getByText(mockSubmission.text)).toBeInTheDocument()
+
+    const textarea = screen.getByRole('textbox')
+    fireEvent.change(textarea, { target: { value: lessonSubmission.content.value } })
+    expect(textarea.value).toBe(lessonSubmission.content.value)
+
+    expect(screen.getByText('send')).toBeInTheDocument()
+    expect(screen.getByText('cancel')).toBeInTheDocument()
+  })
+})
diff --git a/seed-data.json b/seed-data.json
index 1b176bad..c23ce355 100644
--- a/seed-data.json
+++ b/seed-data.json
@@ -30,7 +30,7 @@
       "discord_channel": "rust-state-machine-explorers",
       "course_id": "Rust_State_Machine",
       "endDate": {
-        "_seconds": 1729724400,
+        "_seconds": 1732743757,
         "_nanoseconds": 0
       },
       "nft_title": "Rust State Machine",
@@ -62,6 +62,7 @@
       "tags": ["rust", "blockchain", "polkadot", "substrate"],
       "resized_img_url": "https://firebasestorage.googleapis.com/v0/b/web3dev-development.appspot.com/o/courses_cover%2FRust_State_Machine_Resized.png?alt=media&token=73d4418c-8a0a-4115-9997-512341a0ed82",
       "nft_title": "Rust State Machine NFT",
+      "lastLesson": "Lesson_4_Use_the_Runtime_Macro.md",
       "metadata": {
         "pt-BR": {
           "difficulty": "Intermediário",
@@ -5150,7 +5151,7 @@
           "url": null
         }
       ],
-      "wallet": null,
+      "wallet": "0xf3B669953879Bf8148D21104f4395C235AB93109",
       "name": null,
       "bio": "",
       "cohorts": [],
diff --git a/tests/modalSubmissionLesson.test.js b/tests/modalSubmissionLesson.test.js
new file mode 100644
index 00000000..dbd47ab4
--- /dev/null
+++ b/tests/modalSubmissionLesson.test.js
@@ -0,0 +1,103 @@
+/**
+ * @jest-environment jsdom
+ */
+
+import { render, screen, fireEvent, waitFor } from '@testing-library/react'
+import Modal from '../components/Modal/index'
+import '@testing-library/jest-dom'
+import { serverTimestamp } from 'firebase/firestore'
+import { getUserFromFirestore, submitLessonInFirestore } from '../lib/user'
+import { auth } from '../firebase/initFirebase'
+import { getAllCohorts, getCurrentCohort } from '../lib/cohorts'
+
+jest.mock('uuidv4', () => ({ uuid: jest.fn() }))
+jest.mock('react-i18next', () => ({
+  useTranslation: () => ({ t: (key) => key, i18n: { resolvedLanguage: 'en' } }),
+}))
+jest.mock('../lib/user')
+jest.mock('../lib/cohorts')
+
+describe('Modal - NFT Submission', () => {
+  const mockOnClose = jest.fn()
+  const mockCourse = { id: 'Rust_State_Machine' }
+  const lessonSubmission = {
+    cohort_id: 'RU5mLpQrZZWlmftNSB2w',
+    content: { type: 'text', value: 'Conteúdo aleatório para teste' },
+    createdAt: serverTimestamp(),
+    lesson: 'Lesson_2_Add_State.md',
+    section: 'Section_1',
+  }
+  const mockUser = {
+    uid: '27mBUecPdbEjIDdFfzYPQiQ9Uyqr',
+    cohorts: [{ cohort_id: 'RU5mLpQrZZWlmftNSB2w', course_id: 'Rust_State_Machine' }],
+  }
+  const mockCohort = {
+    id: 'RU5mLpQrZZWlmftNSB2w',
+    startDate: Date.now() + 86400000 * 7,
+    endDate: Date.now() + 86400000 * 7 + 3600000,
+    kickoffStartTime: Date.now() + 86400000 * 7,
+    kickoffEndTime: Date.now() + 86400000 * 7 + 3600000,
+  }
+
+  const setupMocks = () => {
+    jest.clearAllMocks()
+    getAllCohorts.mockResolvedValue([mockCohort])
+    getCurrentCohort.mockReturnValue(mockCohort)
+    getUserFromFirestore.mockResolvedValue(mockUser)
+  }
+
+  const renderModal = () => {
+    render(
+      <Modal
+        openExternal
+        onClose={mockOnClose}
+        course={mockCourse}
+        lesson={lessonSubmission.lesson}
+        section={lessonSubmission.section}
+        submissionType="text"
+        submissionTitle="Upload Assignment"
+        submissionText="Submit your assignment"
+      />
+    )
+  }
+
+  beforeAll(() => {
+    global.fetch = jest.fn(() =>
+      Promise.resolve({ json: () => Promise.resolve({ data: 'fake data' }) })
+    )
+    global.IntersectionObserver = class {
+      observe() {}
+      unobserve() {}
+      disconnect() {}
+    }
+  })
+
+  beforeEach(() => {
+    setupMocks()
+    auth.currentUser = { uid: mockUser.uid }
+  })
+
+  it('should submit lesson correctly and call mintNFT function', async () => {
+    const submitLessonSpy = jest.spyOn(require('../lib/user'), 'submitLessonInFirestore')
+
+    renderModal()
+    await waitFor(async () => {
+      const textarea = screen.getByRole('textbox')
+      fireEvent.change(textarea, { target: { value: lessonSubmission.content.value } })
+      expect(textarea.value).toBe(lessonSubmission.content.value)
+
+      const submitButton = screen.getByText('send')
+      fireEvent.click(submitButton)
+
+      const lessonId = undefined // undefined because these lessons are being created and not updated
+      expect(submitLessonSpy).toHaveBeenCalledWith(
+        lessonSubmission.cohort_id,
+        mockUser,
+        lessonSubmission.lesson,
+        lessonSubmission.section,
+        lessonSubmission.content,
+        lessonId
+      )
+    })
+  })
+})