SolutionTake-home assignment: tests, bug fix, and task assignment feature by gaurav singh rawat

[Gaurav-Rawat28437]

Take-Home Assignment# Take-Home Assignment — The Untested API

Summary

This PR completes the take-home assignment by adding comprehensive test coverage, identifying and fixing a pagination bug, and implementing the requested task assignment feature.

What I Completed

1. Unit Tests

Added unit tests for the task service covering:

• Task creation
• Get all tasks
• Find task by ID
• Get tasks by status
• Pagination
• Task statistics
• Overdue tasks
• Task update
• Task deletion
• Task completion
• Task assignment
• Assignment validation
• Priority filtering
• Assignee filtering
• Task title search
• Multiple filters together

2. API Integration Tests

Added Supertest integration tests covering:

• GET /tasks
• GET /tasks?status=todo
• GET /tasks?page=1&limit=10
• GET /tasks?page=2&limit=10
• GET /tasks/:id
• POST /tasks
• PUT /tasks/:id
• DELETE /tasks/:id
• PATCH /tasks/:id/complete
• PATCH /tasks/:id/assign
• GET /tasks/stats
• Priority filtering
• Assignee filtering
• Search filtering
• Combined priority and assignee filtering
• Validation errors
• Non-existing task handling
• Already assigned task handling

3. Validator Unit Tests

Added tests for:

• Valid task creation data
• Missing title
• Empty title
• Whitespace title
• Invalid status
• Invalid priority
• Invalid due date
• Valid update data
• Invalid update data
• Valid assignee
• Empty assignee
• Whitespace assignee
• Non-string assignee

Bug Found and Fixed

BUG-001 — Pagination Offset Calculation

The tests identified a pagination bug in:

src/services/taskService.js

The original implementation used:

const offset = page * limit;


by : Gaurav Singh Rawat
(mail-to-gr28437@gmail.com)