test: add test for protocol http1

[a631807682]

What type of PR is this?

test

Check the PR title.

• This PR title match the format: <type>(optional scope): <description>.
• The description of this PR title is user-oriented and clear enough for others to understand.
• Attach the PR updating the user documentation if the current PR requires user awareness at the usage level. User docs repo.

(Optional) Translate the PR title into Chinese.

添加 pkg/protocol/http1 单测

(Optional) More detail description for this PR(en: English/zh: Chinese).

en: Supplement unit test for pkg/protocol/http1, coverage increased from 53.30% to 81.9%.
zh(optional): 补充 pkg/protocol/http1 的单元测试，覆盖率从 53.30% 提高到了 81.9%。

其他疑问:
zr 已经 release，并且没有别的引用 https://github.com/cloudwego/hertz/blob/develop/pkg/protocol/http1/server.go#L328-L332
这里再判断一遍是必要的吗？https://github.com/cloudwego/hertz/blob/develop/pkg/protocol/http1/server.go#L353-L356

(Optional) Which issue(s) this PR fixes:

related to #257

(Optional) The PR that updates user documentation:

[li-jin-gou]

thanks💖

[codecov]

Codecov Report

Patch coverage: 90.90% and project coverage change: +3.96 🎉

Comparison is base (2bd70be) 75.87% compared to head (70c8509) 79.84%.

❗ Current head 70c8509 differs from pull request most recent head 5f6c06a. Consider uploading reports for the commit 5f6c06a to get more accurate results

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #804      +/-   ##
===========================================
+ Coverage    75.87%   79.84%   +3.96%     
===========================================
  Files           97       97              
  Lines         9512     9534      +22     
===========================================
+ Hits          7217     7612     +395     
+ Misses        1846     1423     -423     
- Partials       449      499      +50     

Impacted Files	Coverage Δ
pkg/common/test/mock/body_data.go	92.00% <90.00%> (-8.00%)	⬇️
pkg/common/test/mock/network.go	86.02% <100.00%> (+0.20%)	⬆️

... and 9 files with indirect coverage changes

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[Duslia]

It seems that it's useless

[welkeyever]

Thanks a lot! LGTM

[welkeyever]

As for the "duplicated code" you may trigger another pr for it~

[a631807682]

As for the "duplicated code" you may trigger another pr for it~

I will create another PR for it

[li-jin-gou]

@a631807682 There's a conflict that needs to be resolved.

[a631807682]

@a631807682 There's a conflict that needs to be resolved.

done