fix: Allow for multiple values for a parameter

Author: xiaoboa

lib/ruby_http_client.rb

@@ -84,7 +84,7 @@ def add_version(url = nil)
     #   - The url string with the query parameters appended
     #
     def build_query_params(url, query_params)
-      params = query_params.map { |key, value| "#{key}=#{value}" }.join('&')
+      params = URI.encode_www_form(query_params)
       url.concat("?#{params}")
     end
 

test/test_ruby_http_client.rb

@@ -61,9 +61,9 @@ def test_add_version
 
   def test_build_query_params
     url = ''
-    query_params = { 'limit' => 100, 'offset' => 0 }
+    query_params = { 'limit' => 100, 'offset' => 0, 'categories' => ['category1', 'category2'] }
     url = @client.build_query_params(url, query_params)
-    assert_equal('?limit=100&offset=0', url)
+    assert_equal('?limit=100&offset=0&categories=category1&categories=category2', url)
   end
 
   def test_build_url