无法在我的spock spring测试中获取应用程序上下文

package my.dwh.etl

import my.dwh.DwhApplication
import groovy.util.logging.Log
import org.springframework.beans.factory.annotation.Autowired
import org.springframework.boot.test.context.SpringBootTest
import org.springframework.context.ApplicationContext
import spock.lang.Specification

    @Log
    @SpringBootTest(classes = DwhApplication.class)
    class ETL_IT extends Specification {

        @Autowired
        ApplicationContext context

        def "test integration of loading StackedWithHeaderAndAllTypesSource and storing into h2"() {

            given:
            def a

            when:
            a = 1

            then:
            context != null
        }
    }