add support for multiple extension filters

[ecarlson94]

Modifies SearchCodeRequest.Extension to be a list for filtering by x number of extensions. Helps reduce the number of required API calls.

Question: Is there an open issue to support the negation of qualifiers (-extension:{0})? I couldn't find one.

[codecov]

Codecov Report

Merging #2019 into master will increase coverage by <.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master    #2019      +/-   ##
==========================================
+ Coverage   70.77%   70.77%   +<.01%     
==========================================
  Files         535      535              
  Lines       14062    14063       +1     
==========================================
+ Hits         9952     9953       +1     
  Misses       4110     4110

Impacted Files	Coverage Δ
Octokit/Models/Request/SearchCodeRequest.cs	92.72% <100%> (+0.13%)	⬆️

[shiftkey]

Question: Is there an open issue to support the negation of qualifiers (-extension:{0})? I couldn't find one.

@ecarlson94 not that I'm aware of. Please open one if this is something you'd like to see it supported.

[shiftkey]

@ecarlson94 thanks for opening this up. I also know there's a docs example in docs/search.md that will need to be updated to support this change:

var request = new SearchCodeRequest("auth")
{
    // we can restrict search to the file, path or search both
    In = new[] { CodeInQualifier.File, CodeInQualifier.Path },
    
    // how about we find a file based on a certain language
    Language = Language.JavaScript,
    
    // do we want to search forks too?
    Forks = true,

    // find files that are above 1000 bytes
    Size = Range.GreaterThan(1000),

    // we may want to restrict the search to the path of a file
    Path = "app/assets",
    
    // we may want to restrict the file based on file extension
    Extension = "json",
    
    // restrict search to a specific file name
    FileName = "app.json",
    
    // search within a users or orgs repo
    User = "dhh"
};

[ecarlson94]

@shiftkey, thanks for the quick response. I updated the documentation. Sorry I missed it.

I also changed the Extensions property from an IList to an IEnumerable. It matches the conventions already in place. And since SearchCodeRequest is an object that has to be manually create, users won't need IList.Add() when they can just statically initialize the property.

[ecarlson94]

@shiftkey, any idea what I should do about this Travis CI error.

[shiftkey]

@ecarlson94 it's unrelated to the PR, so I've just re-run it to see if it'll pass

[shiftkey]

release_notes: SearchCodeRequest.Extension has been renamed to SearchCodeRequest.Extensions to support multiple file extensions