idea 测试覆盖率

快来打我* 2022-09-09 12:44 184阅读 0赞

# 1、编写类 #

package com.jacoco;
    
    /**
     * @author ybwei
     * @Description
     * @date 2021/8/31 13:27
     **/
    public class Add {
        public int add(int a, int b) {
            if (a == 20) {
                return 20;
            }
            return a + b;
        }
    }

自行生成Test类快捷键，ctrl+shift+T或者在类中右键，选中Go To-->选择Test，弹窗中选中需要测试的方法，直接生成。

package com.jacoco;
    
    import lombok.extern.slf4j.Slf4j;
    import org.junit.jupiter.api.AfterEach;
    import org.junit.jupiter.api.BeforeEach;
    import org.junit.jupiter.api.Test;
    
    import static org.junit.jupiter.api.Assertions.assertEquals;
    
    @Slf4j
    public class AddTest {
    
        private static Add add=new Add();
    
        @BeforeEach
        void setUp() {
            log.info("setUp");
        }
    
        @AfterEach
        void tearDown() {
            log.info("tearDown");
        }
    
        @Test
        void add() {
            int sum = add.add(1, 2);
            assertEquals(3, sum);
        }
    }

# 2、idea自带插件 #

注意： 测试的包名和开发的包名必须一致，否则会没有测试报告（报No coverage in ‘all classes in scope‘ in Intellij）。

执行Run 'AddTest' with Coverage

![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBAeGl4aW5nemhlMg_size_20_color_FFFFFF_t_70_g_se_x_16][]

生成覆盖率

![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBAeGl4aW5nemhlMg_size_20_color_FFFFFF_t_70_g_se_x_16 1][]

![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBAeGl4aW5nemhlMg_size_20_color_FFFFFF_t_70_g_se_x_16 2][]

#  3、jacoco插件 #

pom.xml

<build>
        <plugins>
            <plugin>
                <groupId>org.jacoco</groupId>
                <artifactId>jacoco-maven-plugin</artifactId>
                <version>0.8.7</version>
                <configuration>
                    <destFile>target/test-coverage/jacoco-unit.exec</destFile>
                    <dataFile>target/test-coverage/jacoco-unit.exec</dataFile>
                </configuration>
                <executions>
                    <execution>
                        <id>default-prepare-agent</id>
                        <goals>
                            <goal>prepare-agent</goal>
                        </goals>
                    </execution>
                    <execution>
                        <id>jacoco-site</id>
                        <phase>test</phase>
                        <goals>
                            <goal>report</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

执行命令

mvn clean test -Dtest=com.jacoco.AddTest -Dmaven.test.failure.ignore=true verify

执行完成，在target/site/jacoco/index.html即可查看覆盖率图表。

![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBAeGl4aW5nemhlMg_size_20_color_FFFFFF_t_70_g_se_x_16 3][]

![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBAeGl4aW5nemhlMg_size_20_color_FFFFFF_t_70_g_se_x_16 4][]

[watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBAeGl4aW5nemhlMg_size_20_color_FFFFFF_t_70_g_se_x_16]: /images/20220829/9c8c745b9bfd4b6e9151d1b26542fea8.png
[watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBAeGl4aW5nemhlMg_size_20_color_FFFFFF_t_70_g_se_x_16 1]: /images/20220829/6e16d4e524bf4cc9bbdf0855da29b67c.png
[watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBAeGl4aW5nemhlMg_size_20_color_FFFFFF_t_70_g_se_x_16 2]: /images/20220829/9ae3968e0ed6422096d184cc67fbbbd5.png
[watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBAeGl4aW5nemhlMg_size_20_color_FFFFFF_t_70_g_se_x_16 3]: /images/20220829/3a9339d9f8a644a3ae803c7b4f61633a.png
[watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBAeGl4aW5nemhlMg_size_20_color_FFFFFF_t_70_g_se_x_16 4]: /images/20220829/314f4d2f09424cf18de2268f72d68957.png