fix:when SetRetryCount -1, both resp and error are nil.

[yjhmelody]

I add a test for this behavior, I think it is a bug.

[codecov]

Codecov Report

Merging #392 (e0406c2) into master (b90c855) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #392   +/-   ##
=======================================
  Coverage   95.97%   95.97%           
=======================================
  Files          10       10           
  Lines        1019     1019           
=======================================
  Hits          978      978           
  Misses         23       23           
  Partials       18       18           

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[jeevatkm]

@yjhmelody Thanks for creating a PR. I'm sorry I'm not able to grasp the outcome.

Can you explain and help me to understand?

[yjhmelody]

@jeevatkm

https://github.com/go-resty/resty/blob/master/retry.go#L87

for attempt := 0; attempt <= opts.maxRetries; attempt++ {
...

opts.MaxRetries is -1 so we cannot go into the loop,
The Backoff's operation has not done anything exactly. So both err and resp are nil.

[jeevatkm]

@yjhmelody This PR contains new test cases added. But you mentioned it as "fix". What is the bug and fix you're submitting?

[moorereason]

I created issue #404 to track the actual issue reported in the PR.

[yjhmelody]

@moorereason Oh, let we choose the second solution ?

[jeevatkm]

@yjhmelody Thanks for your contributions. I'm really sorry for the delay, due to personal reasons.