RedisjsClientMock.ts

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

    +-------------------+
    | 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.