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我正在尝试学习 JPA 上的复数视觉演示课程，而我刚刚构建的测试在 assertThat 方法上抛出了一个错误，我不知道为什么。我确信这非常明显，但我在这里或 java 文档示例中找不到解决方案。请在新的一年里提供帮助。

错误信息

The method assertThat(List<Flight>) is undefined for the type SpringDataOverviewApplicationTestsJava(67108964)

编码

package com.pluralsight.springdataoverview;

import java.time.LocalDateTime;
import java.util.List;

import javax.persistence.EntityManager;
import javax.persistence.TypedQuery;

import com.pluralsight.springdataoverview.entity.Flight;

import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.autoconfigure.orm.jpa.DataJpaTest;
import org.springframework.boot.test.context.SpringBootTest;


@DataJpaTest
class SpringDataOverviewApplicationTests {

    @Autowired
    private EntityManager entityManager;

    @Test
    public void verifyFlightCanBeSaved() {
        final Flight flight = new Flight();
        flight.setOrigin("Amsterdam"); 
        flight.setDestination("New york");
        flight.setScheduledAt(LocalDateTime.parse("2011-12-13T12:12:00"));

        entityManager.persist(flight);

        final TypedQuery<Flight> results = entityManager
            .createQuery("SELECT f FROM Flight f", Flight.class);

            final List<Flight> resultList = results.getResultList();

            assertThat(resultList)
                .hasSize(1)
                .first()
                .isEqualTo(flight);
    }

}
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1 回答 1

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一定要静态导入使用的断言方法：

import static org.assertj.core.api.Assertions.assertThat;

请注意，assertj 依赖项也需要存在，因此例如通过 gradle 声明它： testImplementation("org.assertj:assertj-core:3.22.0")

https://assertj.github.io/doc/

于 2022-01-04T07:59:45.820 回答