fix: JSON-encode array request bodies

lib/ruby_http_client.rb

@@ -53,6 +53,7 @@ def wait!
     #   - +response+ -> A NET::HTTP response object
     #
     attr_reader :status_code, :body, :headers
+
     def initialize(response)
       @status_code = response.code
       @body = response.body
@@ -265,7 +266,7 @@ def _(name = nil)
     # (e.g. client.name.name.get())
     #
     # * *Args*    :
-    #   - The args are autmoatically passed in
+    #   - The args are automatically passed in
     # * *Returns* :
     #   - Client object or Response object
     #
@@ -296,8 +297,8 @@ def build_http_request(http_method)
 
     def update_content_type(http_method)
       if @request_body && content_type_json?
-        # If body is a hash, encode it; else leave it alone
-        @request.body = if @request_body.class == Hash
+        # If body is a hash or array, encode it; else leave it alone
+        @request.body = if [Hash, Array].include?(@request_body.class)
                           @request_body.to_json
                         else
                           @request_body

test/test_ruby_http_client.rb

@@ -189,7 +189,7 @@ def test_build_request_post_multipart
     assert_equal('hogebody', client.request.body)
   end
 
-  def test_json_body_encode
+  def test_json_body_encode_hash
     headers = {
       'Content-Type' => 'application/json'
     }
@@ -203,6 +203,20 @@ def test_json_body_encode
     assert_equal('{"this_is":"json"}', response.request_body)
   end
 
+  def test_json_body_encode_array
+    headers = {
+      'Content-Type' => 'application/json'
+    }
+    client = MockRequestWithRequestBody.new(
+      host: 'https://localhost',
+      request_headers: headers
+    )
+    name = 'post'
+    args = [{ 'request_body' => [{ 'this_is' => 'json' }] }]
+    response = client.build_request(name, args)
+    assert_equal('[{"this_is":"json"}]', response.request_body)
+  end
+
   def test_json_body_do_not_reencode
     headers = {
       'Content-Type' => 'application/json'