ci failure fix

lib/signet/oauth_2/client.rb

@@ -843,8 +843,8 @@ def granted_scopes
       #   The scope of access the client is requesting.  This may be
       #   expressed as either an Array of String objects or as a
       #   space-delimited String.
-      def granted_scopes= new_granted_scope
-        @granted_scopes = new_granted_scope&.split
+      def granted_scopes= new_granted_scopes
+        @granted_scopes = new_granted_scopes&.split
       end
 
       ##
@@ -1046,12 +1046,13 @@ def fetch_access_token options = {}
           content_type = response.header[:content_type]
         end
 
-        parsed_response = ::Signet::OAuth2.parse_credentials body, content_type if status == 200
-        parsed_response["granted_scopes"] = parsed_response.delete("scope")
-        return parsed_response
-
         message = "  Server message:\n#{response.body.to_s.strip}" unless body.to_s.strip.empty?
-        if [400, 401, 403].include? status
+
+        if status == 200
+          parsed_response = ::Signet::OAuth2.parse_credentials body, content_type 
+          parsed_response["granted_scopes"] = parsed_response.delete("scope") if parsed_response
+          return parsed_response
+        elsif [400, 401, 403].include? status
           message = "Authorization failed.#{message}"
           raise ::Signet::AuthorizationError.new message, response: response
         elsif status.to_s[0] == "5"

spec/signet/oauth_2/client_spec.rb

@@ -64,7 +64,7 @@ def build_form_encoded_response payload
   end
 
   it "should allow to set granted scopes" do
-    @client.granted_scopes = ["granted_scopes1 granted_scopes2"]
+    @client.granted_scopes = "granted_scopes1 granted_scopes2"
     expect(@client.granted_scopes).to eq ["granted_scopes1", "granted_scopes2"]
   end
 
@@ -381,14 +381,14 @@ def build_form_encoded_response payload
       refresh_token: "54321",
       :expires_in    => 3600,
       :issued_at     => issued_at,
-      :granted_scopes => ["scope1"]
+      :granted_scopes => "scope1"
     )
     expect(@client.access_token).to eq "12345"
     expect(@client.refresh_token).to eq "54321"
     expect(@client.expires_in).to eq 3600
     expect(@client.issued_at).to eq issued_at
     expect(@client).to_not be_expired
-    expect(@client).to eq ["scope1"]
+    expect(@client.granted_scopes).to eq ["scope1"]
   end
 
   it "should handle expires as equivalent to expires_in" do