test: refactor request test

[bwanglzu]

Add missing tests for types.Request.

[github-actions]

Latency summary

Current PR yields:

• 😶 index QPS at 2300, delta to last 3 avg.: +0%
• 🐎🐎🐎🐎 query QPS at 54, delta to last 3 avg.: +31%

Breakdown

Version	Index QPS	Query QPS
current	2300	54
0.8.3	2336	41
0.8.2	2328	40
0.8.1	2244	41

Backed by latency-tracking. Further commits will update this comment.

Latency summary

Current PR yields:

• 🐎🐎🐎🐎 index QPS at 1941, delta to last 3 avg.: +16%
• 🐎🐎🐎🐎 query QPS at 34, delta to last 3 avg.: +21%

Breakdown

Version	Index QPS	Query QPS
current	1941	34
0.8.3	1651	27
0.8.2	1676	28
0.8.1	1667	28

Backed by latency-tracking. Further commits will update this comment.

[codecov]

Codecov Report

Merging #1445 (3b05573) into master (6fdfb5e) will increase coverage by 0.26%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1445      +/-   ##
==========================================
+ Coverage   81.49%   81.75%   +0.26%     
==========================================
  Files         113      112       -1     
  Lines        6694     6650      -44     
==========================================
- Hits         5455     5437      -18     
+ Misses       1239     1213      -26     

Impacted Files	Coverage Δ
jina/logging/sse.py	94.11% <0.00%> (-1.05%)	⬇️
jina/logging/profile.py	55.81% <0.00%> (-0.66%)	⬇️
jina/executors/decorators.py	87.77% <0.00%> (-0.53%)	⬇️
jina/drivers/craft.py	100.00% <0.00%> (ø)
jina/types/ndarray/generic.py	100.00% <0.00%> (ø)
jina/executors/indexers/cache.py	100.00% <0.00%> (ø)
jina/executors/evaluators/text/length.py	100.00% <0.00%> (ø)
jina/executors/evaluators/rank/precision.py	100.00% <0.00%> (ø)
jina/drivers/evaluate.py	98.21% <0.00%> (+0.03%)	⬆️
jina/peapods/peas/__init__.py	90.61% <0.00%> (+0.03%)	⬆️
... and 21 more

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