Accumulate tests

[qiweiii]

close #296

[codecov]

Codecov Report

Attention: Patch coverage is 56.77656% with 118 lines in your changes missing coverage. Please review.

Project coverage is 85.60%. Comparing base (29ab217) to head (1e01a4f).
Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
...n/VMInvocations/Invocations/RefineInvocation.swift	0.00%	48 Missing ⚠️
...vocations/Invocations/IsAuthorizedInvocation.swift	0.00%	20 Missing ⚠️
...Invocations/Invocations/OnTransferInvocation.swift	0.00%	20 Missing ⚠️
...ces/Blockchain/RuntimeProtocols/Accumulation.swift	84.33%	13 Missing ⚠️
...ces/Blockchain/Validator/GuaranteeingService.swift	0.00%	12 Missing ⚠️
...Invocations/Invocations/AccumulateInvocation.swift	88.88%	5 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #301      +/-   ##
==========================================
+ Coverage   84.15%   85.60%   +1.44%     
==========================================
  Files         306      307       +1     
  Lines       25024    25092      +68     
==========================================
+ Hits        21060    21479     +419     
+ Misses       3964     3613     -351     

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