feature/add-mocking

[cedricve]

Description

Motivation

The primary motivation behind this pull request is to enhance the testing capabilities of our project by introducing a mock implementation of the DatabaseInterface. This allows for more robust and isolated unit tests by simulating database interactions without the need for an actual database connection.

Improvements

1. Isolation of Tests: By using mock implementations, we can isolate unit tests from the actual database, reducing dependencies and making tests more reliable and faster.
2. Controlled Test Scenarios: The mock allows for precise control over the behavior of database operations, enabling the simulation of various scenarios, including error conditions, without the need to manipulate a real database.
3. Enhanced Documentation: The README has been updated to include comprehensive instructions on using the mock for testing, providing clear guidance for developers.
4. Increased Test Coverage: The changes include extensive test cases for the mock implementation, ensuring that the mock behaves as expected and increasing overall test coverage.
5. Ease of Use: The mock implementation comes with various features like setting expectations, custom behaviors, and tracking call history, making it easy to use and integrate into existing tests.

This addition significantly improves the project's testing framework, making it easier to write, maintain, and run tests in isolation from the actual database environment.

[codecov]

Codecov Report

❌ Patch coverage is 73.58491% with 28 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
pkg/database/mongodb.go	35.71%	15 Missing and 3 partials ⚠️
pkg/database/mock.go	87.17%	9 Missing and 1 partial ⚠️

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