Adds benchmark tests for Schematics tool

[AlvaroLQueiroz]

Change Summary

This PR adds a comparison tests for the Schematic tool.

[codecov]

Codecov Report

Merging #2381 (5bf98ca) into master (b7a8ef2) will decrease coverage by 0.09%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##            master    #2381      +/-   ##
===========================================
- Coverage   100.00%   99.90%   -0.10%     
===========================================
  Files           23       25       +2     
  Lines         4485     5072     +587     
  Branches       909     1038     +129     
===========================================
+ Hits          4485     5067     +582     
- Misses           0        1       +1     
- Partials         0        4       +4     

Impacted Files	Coverage Δ
pydantic/json.py	100.00% <0.00%> (ø)
pydantic/mypy.py	100.00% <0.00%> (ø)
pydantic/types.py	100.00% <0.00%> (ø)
pydantic/utils.py	100.00% <0.00%> (ø)
pydantic/fields.py	100.00% <0.00%> (ø)
pydantic/typing.py	100.00% <0.00%> (ø)
pydantic/_hypothesis_plugin.py	100.00% <0.00%> (ø)
pydantic/main.py	99.06% <0.00%> (ø)
pydantic/__init__.py	100.00% <0.00%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update b7a8ef2...5bf98ca. Read the comment docs.

[samuelcolvin]

Normally I refuse new benchmarks, but I do see that this library is relatively popular.

Could you give a summary of the benchmark results with this added? I'm afraid I don't have a linux machine at hand right now.

[samuelcolvin]

surely not all exceptions should be caught here?

[AlvaroLQueiroz]

You're right. I've already corrected.

[AlvaroLQueiroz]

@samuelcolvin i don't have a linux machine too. But this is the results executed on a Mac Pro with MacOS Catalina, i5 2GHZ, 16GB.

Package	Version	Relative Performance	Mean validation time
pydantic	1.7.3		91.8μs
attrs + cattrs	20.3.0	1.3x slower	116.6μs
valideer	0.4.2	1.3x slower	122.0μs
marshmallow	3.10.0	2.5x slower	225.0μs
voluptuous	0.12.1	2.5x slower	226.0μs
trafaret	2.1.0	3.3x slower	305.0μs
schematics	2.1.0	10.3x slower	948.6μs
django-rest-framework	3.12.2	12.6x slower	1154.3μs
cerberus	1.3.2	22.6x slower	2073.4μs