如何使用Spock測試單個類的記錄器？

Question

所以我有一個類：

ExtractJustAddedObjectTypeIDsBolt { 
     private static Logger logger = LoggerFactory.getLogger(ExtractJustAddedObjectTypeIDsBolt.class); 

     public void someMethod() { 
     logger.error("this is an error"); 
     } 
} 

ClassOneTest extends Specification { 
    ExtractJustAddedObjectTypeIDsBolt bolt; 

    void setup() { 
     this.bolt = new ExtractJustAddedObjectTypeIDsBolt(); 
    } 

    void cleanup() { // run after every feature method 

    } 

    def "test someMethod"() { 
     given: 

     when: 
     bolt.someMethod(); 

     then: 
     bolt.logger.error("this is an error"); 
    } 
} 

但是，這是我的錯誤：

199 [main] ERROR member.bolt.ExtractJustAddedObjectTypeIDsBolt - this is an error 

Too few invocations for: 

1 * bolt.logger.error("this is an error") (0 invocations) 

Unmatched invocations (ordered by similarity): 

Answer 1

嘗試用：

def "test someMethod"() { 
     given: 
      def logger = Mock(Logger) 
     and: 
      bolt.logger = logger 
     when: 
      bolt.someMethod() 
     then: 
      1 * logger.error("this is an error") 
    } 

您需要先嘲笑記錄儀。