📝 Only Notes – Fast, Clean & Offline Note Taking App

Only Notes is a modern Jetpack Compose Android app for creating and managing notes, completely offline. Designed with minimal UI and smooth performance, it follows MVVM + Clean Architecture and uses Room for local persistence.

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🚀 Features

• ➕ Add, 📝 Edit, and 🗑 Delete notes easily
• 🎨 Choose from multiple soft background colors
• 📱 Fully responsive grid layout with Compose
• 🧠 Offline-first using Room database
• ❗ Confirmation dialog before delete
• ✏️ Edit screen with pre-filled data and delete button
• ⚙️ Built on MVVM + Clean Architecture
• 🔒 No internet or account required — 100% private

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🧱 Architecture

The app follows Clean Architecture:

UI (Compose)
↓
ViewModel (MVVM)
↓
Use Cases (Domain Layer)
↓
Repository Interface
↓
Repository Implementation (Room DB)

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🛠️ Tech Stack

• Kotlin
• Jetpack Compose (Material 3)
• MVVM + Clean Architecture
• Room (local DB)
• Hilt (DI)
• Navigation Compose
• State Management with remember, mutableStateOf, and viewModel

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🧪 Unit Testing

This project uses JUnit4, Mockito, and Kotlin Coroutines Test for ViewModel testing.

✅ ViewModel Test Coverage

Function	Description
addNote()	Adds a new note and refreshes list
updateNote()	Updates an existing note (via add)
deleteNote()	Deletes a note and reloads notes
loadNotes()	Loads all notes into state
loadNoteById()	Loads a single note into editingNote

📁 Test Location

• Location: com.sadxlab.notescompose.presentation.viewmodel.NoteViewModelTest

🔧 Tools Used

• kotlinx.coroutines.test – Coroutine testing utilities
• Mockito / Mockito-Kotlin – For mocking repository behavior
• JUnit4 – Test framework

🧪 Sample Test Case

@Test
fun `update Note should call addNote and load updated notes`() = runTest {
    val updatedNote = Note(id = 1, title = "Updated", content = "Updated content")

    whenever(repository.addNote(updatedNote)).thenReturn(Unit)
    whenever(repository.getNotes()).thenReturn(flowOf(listOf(updatedNote)))

    viewModel.updateNote(updatedNote)
    advanceUntilIdle()

    verify(repository).addNote(updatedNote)
    val result = viewModel.notes.first()
    assertEquals(listOf(updatedNote), result)
}

📸 Screenshots

🔐 Privacy

Only Notes does not collect or share any personal data. Privacy Policy: Read here

📲 Play Store

Rate & support us on the Google Play Store ⭐

👨‍💻 Author

Developed by Darshan Khatri