Update decorators.py

[AFriemann]

key_builder now receives wrapped function as first argument

[AFriemann]

regarding #399

[AFriemann]

I'll update this later with fixed tests and all

[codecov]

Codecov Report

Merging #400 into master will increase coverage by 0.22%.
The diff coverage is 100%.

@@           Coverage Diff            @@
##           master   #400      +/-   ##
========================================
+ Coverage   99.77%   100%   +0.22%     
========================================
  Files           9      9              
  Lines         871    858      -13     
  Branches       95     91       -4     
========================================
- Hits          869    858      -11     
+ Misses          2      0       -2

Impacted Files	Coverage Δ
aiocache/decorators.py	100% <100%> (ø)	⬆️
aiocache/backends/redis.py	100% <0%> (ø)	⬆️
aiocache/backends/memcached.py	100% <0%> (ø)	⬆️
aiocache/factory.py	100% <0%> (ø)	⬆️
aiocache/lock.py	100% <0%> (ø)	⬆️
aiocache/backends/memory.py	100% <0%> (ø)	⬆️
aiocache/base.py	100% <0%> (ø)	⬆️
aiocache/serializers.py	100% <0%> (+3.5%)	⬆️

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[stfsy]

@AFriemann any plans on updating tests and getting this merged by.. anyone?

[AFriemann]

@stfsy as far as I know this should be solved

#417

I did rework my solution at some point, but the whole test suite is a bit bonkers. Since I'm not using this anymore I honestly just dropped it.

[argaen]

Indeed, @stfsy this behavior is in master. Can you give it a try. I can do a minor release if needed :)

PS: Closing the PR