Better: compatibility with ruby 3.x (#662)

Gemfile

@@ -7,13 +7,14 @@ group :development do
 end
 
 group :development, :test do
+  gem "psych", '< 4.0.0' # safe_load signature not compatible with older rubies
   gem "rake"
   gem "typhoeus" unless defined? JRUBY_VERSION
 end
 
 group :test do
   gem "rspec", '~> 3.4'
-  gem "vcr"
+  gem "vcr", github: 'vcr/vcr', ref: '8ced6c96e01737a418cd270e0382a8c2c6d85f7f' # needs https://github.com/vcr/vcr/pull/907 for ruby 3.1
   gem "webmock"
   gem "simplecov"
 end

changelog.md

@@ -16,6 +16,7 @@ Removed features:
 Internal improvements:
 
 * Lock Faraday to < 2
+* Compatibility with ruby 3.x
 
 Testing improvements:
 

koala.gemspec

@@ -26,4 +26,5 @@ Gem::Specification.new do |gem|
   gem.add_runtime_dependency("faraday", "< 2")
   gem.add_runtime_dependency("addressable")
   gem.add_runtime_dependency("json", ">= 1.8")
+  gem.add_runtime_dependency("rexml")
 end

lib/koala/api.rb

@@ -102,7 +102,7 @@ def api(path, args = {}, verb = "get", options = {})
         args = sanitize_request_parameters(args) unless preserve_form_arguments?(options)
 
         # add a leading / if needed...
-        path = "/#{path}" unless path =~ /^\//
+        path = "/#{path}" unless path.to_s =~ /^\//
 
         # make the request via the provided service
         result = Koala.make_request(path, args, verb, options)

spec/support/mock_http_service.rb

@@ -30,7 +30,7 @@ module MockHTTPService
 
     # Loads the mock response data via ERB to substitue values for TEST_DATA (see oauth/access_token)
     mock_response_file_path = File.join(File.dirname(__FILE__), '..', 'fixtures', 'mock_facebook_responses.yml')
-    RESPONSES = YAML.load(ERB.new(IO.read(mock_response_file_path)).result(binding))
+    RESPONSES = YAML.safe_load(ERB.new(IO.read(mock_response_file_path)).result(binding), [], [], true)
 
     def self.make_request(request)
       if response = match_response(request.raw_path, request.raw_args, request.raw_verb, request.raw_options)