[venus-miner] 单元测试

[diwufeiwen]

Checklist

• [X] This is not a new feature or an enhancement to the Filecoin protocol. If it is, please open an FIP issue.
• [X] This is not a new feature request. If it is, please file a feature request instead.
• [X] This is not brainstorming ideas. If you have an idea you'd like to discuss, please open a new discussion on the venus forum and select the category as Ideas.
• [X] I have a specific, actionable, and well motivated improvement to propose.

Venus component

• [ ] venus daemon - [chain service] chain sync
• [ ] venus auth - [chain service] authentication
• [ ] venus messager - [chain service] message management (mpool)
• [ ] venus gateway - [chain service] gateway
• [ ] venus miner - [chain service] mining and block production
• [ ] venus sealer/worker - sealing
• [ ] venus sealer - proving (WindowPoSt)
• [ ] venus market - storage deal
• [ ] venus market - retrieval deal
• [ ] venus market - data transfer
• [ ] venus light-weight client
• [ ] venus JSON-RPC API
• [ ] Other

Improvement Suggestion

单元测试