node-redlock/docs/RedisjsClientMock.ts.md

A distributed locking algorithm used to manage distributed resources in a system.

 Software Design Document (SDD) for RedisjsClientMock.ts
=======================================================

Introduction and Overview
-----------------------------

The `RedisjsClientMock` is a mock implementation of the `RedisClient` interface defined in the `../interfaces/RedisClient` module. This class is used as a test double for testing purposes, allowing developers to simulate the behavior of the actual `RedisClient` without interacting with a real Redis server.

System Architecture
----------------------

### Class Diagram
```lua
    +-------------------+
    | RedisjsClientMock   |
    +-----------+
    | - set:     |
    |   SinonStub;      |
    | - eval:        |
    |                   |
    | - constructor()  |
    +-----------+
```
Data Design
--------------

There are no data design elements to discuss as the code does not interact with any databases or external data sources.

Interface Design
----------------------

The `RedisjsClientMock` class implements the `RedisClient` interface defined in the `../interfaces/RedisClient` module. This interface defines two methods: `set(key: string, value: any): void` and `eval(command: string): void`.

Component Design
---------------------

The `RedisjsClientMock` class does not have any components as it is a simple class with only two methods.

User Interface Design
--------------------------

As this is a mock implementation, there is no user interface design to discuss. The focus of the mock implementation is solely on simulating the behavior of the `RedisClient` interface for testing purposes.

Assumptions and Dependencies
-------------------------------

The assumptions made in this code are that the `set(key: string, value: any): void` and `eval(command: string): void` methods should throw an error when called. This assumption is likely made to ensure that the mock implementation behaves consistently with the behavior of the actual `RedisClient` class.

There are no dependencies on external libraries or modules in this code, as the focus is solely on creating a test double for the `RedisClient` interface.

Glossary of Terms
----------------------

* **Test Double**: A class that is used to simulate the behavior of another class during testing. In this case, the `RedisjsClientMock` is a test double for the `RedisClient` interface.
* **SinonStub**: A stub function provided by the Sinon library. A stub function allows you to define how a particular method or function should behave in a specific context. In this case, the `set(key: string, value: any): void` and `eval(command: string): void` methods are defined as stub functions using the Sinon `stub()` method.
* **RedisClient**: An interface that defines the methods that can be called on an object representing a Redis client. In this case, the `RedisjsClientMock` class implements this interface to create a mock implementation of a Redis client.