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jacoco+junit 5.0动态测试不工作

jacoco-maven-plugin junit5 jacoco spring-boot

1

neaGaze · 技术社区 · 6 年前

我正在尝试使用带有junit 5和spring boot的jacoco生成代码覆盖率报告。我正在尝试使用junit 5的动态特性。它成功运行,但jacoco生成的测试覆盖率报告中不包括动态测试。JUnit5动态测试目前不在Jacoco的范围内吗?

代码如下:

    @RunWith(JUnitPlatform.class)
    @SelectPackages("com.troll.jpt.abc.model")
    @SelectClasses({Status.class})
    public class DynamicModelTester {

    private Status status;

    @BeforeEach
    public void setUp() {
        status = new Status();
    }

    @TestFactory
    public Stream<DynamicTest> checkDynamicTestsFromStream() {

        List<String> input = Arrays.asList("abc");
        List<String> output = Arrays.asList("abc");

        status.setCode(input.get(0));

        return input.stream().map(str ->  DynamicTest.dynamicTest("status test", () -> {
            assertEquals(output.get(0), status.getCode());
        }));
    }
}

我使用的jacoco插件是:

    <plugin>
        <groupId>org.jacoco</groupId>
        <artifactId>jacoco-maven-plugin</artifactId>
        <version>0.8.2-SNAPSHOT</version>
        <executions>
            <execution>
                <id>prepare-agent</id>
                <goals>
                    <goal>prepare-agent</goal>
                </goals>
            </execution>
            <execution>
                <id>report</id>
                <phase>prepare-package</phase>
                <goals>
                    <goal>report</goal>
                </goals>
            </execution>
            <execution>
                <id>post-unit-test</id>
                <phase>test</phase>
                <goals>
                    <goal>report</goal>
                </goals>
                <configuration>
                    <!-- Sets the path to the file which contains the execution data. -->

                    <dataFile>target/jacoco.exec</dataFile>
                    <!-- Sets the output directory for the code coverage report. -->
                    <outputDirectory>target/jacoco-ut</outputDirectory>
                </configuration>
            </execution>
        </executions>
        <configuration>
            <systemPropertyVariables>
                <jacoco-agent.destfile>target/jacoco.exec</jacoco-agent.destfile>
            </systemPropertyVariables>
        </configuration>
    </plugin>

1 回复 | 直到 6 年前

1

3

Godin 6 年前

它成功运行,但jacoco生成的测试覆盖率报告中不包括动态测试。

jacoco-maven-plugin:report 在测试中不显示覆盖率,而是显示测试目标的覆盖率-在您的案例中,目标似乎是类 Status ,其定义完全不存在。以后我强烈推荐你读 https://stackoverflow.com/help/mcve 并遵循它的建议,特别是关于“完成”的部分:

确保包含了重现问题所需的所有信息

关于“jacoco支持junit 5动态测试吗?”是: jacoco记录了这样一个事实:代码的执行与执行方式无关 -通过JUnit 4或JUnit 5,甚至手动或其他执行方式。

对于“为什么有些代码没有标记为已覆盖”之类的问题,给出了一般性的回答。是: 确保代码实际执行 ,如果是自动测试,这意味着- 确保这些测试实际执行 。

但是让我们试试JUnit5动态测试。在没有 src/main/java/Status.java 我想大概是

public class Status {

  private String code;

  public void setCode(String code) {
    this.code = code;
  }

  public String getCode() {
    return code;
  }

}

不知道你为什么需要 systemPropertyVariables ,快照版本 jacoco-maven-plugin ,多次执行 report 以及 dataFile 以其默认值,因此也将假定 pom.xml 稍微清理一下之后

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>org.example</groupId>
  <artifactId>example</artifactId>
  <version>1.0-SNAPSHOT</version>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  </properties>

  <dependencies>
    <dependency>
      <groupId>org.junit.jupiter</groupId>
      <artifactId>junit-jupiter-api</artifactId>
      <version>5.2.0</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>org.junit.jupiter</groupId>
      <artifactId>junit-jupiter-engine</artifactId>
      <version>5.2.0</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.12</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>org.junit.vintage</groupId>
      <artifactId>junit-vintage-engine</artifactId>
      <version>5.2.0</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>org.junit.platform</groupId>
      <artifactId>junit-platform-runner</artifactId>
      <version>1.2.0</version>
      <scope>test</scope>
    </dependency>
  </dependencies>

  <build>
    <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>3.7.0</version>
        <configuration>
          <source>1.8</source>
          <target>1.8</target>
        </configuration>
      </plugin>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-surefire-plugin</artifactId>
        <version>2.21.0</version>
      </plugin>
      <plugin>
        <groupId>org.jacoco</groupId>
        <artifactId>jacoco-maven-plugin</artifactId>
        <version>0.8.1</version>
        <configuration>
          <outputDirectory>target/jacoco-ut</outputDirectory>
        </configuration>
        <executions>
          <execution>
            <goals>
              <goal>prepare-agent</goal>
              <goal>report</goal>
            </goals>
          </execution>
        </executions>
      </plugin>
    </plugins>
  </build>

</project>

放置后

import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.DynamicTest;
import org.junit.jupiter.api.TestFactory;
import org.junit.platform.runner.JUnitPlatform;
import org.junit.platform.suite.api.SelectClasses;
import org.junit.platform.suite.api.SelectPackages;
import org.junit.runner.RunWith;

import java.util.Arrays;
import java.util.List;
import java.util.stream.Stream;

import static org.junit.Assert.assertEquals;

@RunWith(JUnitPlatform.class)
@SelectPackages("com.troll.jpt.abc.model")
@SelectClasses({Status.class})
public class DynamicModelTester {

  private Status status;

  @BeforeEach
  public void setUp() {
    status = new Status();
  }

  @TestFactory
  public Stream<DynamicTest> dynamicTestsFromStream() {
    List<String> input = Arrays.asList("abc");
    List<String> output = Arrays.asList("abc");

    status.setCode(input.get(0));

    return input.stream().map(str ->  DynamicTest.dynamicTest("status test", () -> {
      assertEquals(output.get(0), status.getCode());
    }));
  }

}

进入之内 src/test/java/DynamicModelTester.java 以及执行 mvn clean verify :

[INFO] --- maven-surefire-plugin:2.21.0:test (default-test) @ example ---
[INFO]
[INFO] --- maven-jar-plugin:2.4:jar (default-jar) @ example ---
[INFO] Building jar: /private/tmp/jacoco/target/example-1.0-SNAPSHOT.jar
[INFO]
[INFO] --- jacoco-maven-plugin:0.8.1:report (default) @ example ---
[INFO] Skipping JaCoCo execution due to missing execution data file.

最后一行很可疑,而且没有执行的测试数量 maven-surefire-plugin 加上没有 target/surefire-reports/ 。

让我们重命名 DynamicModelTester 进入之内 DynamicModelTest 并执行 MVN清洁验证 再一次:

[INFO] --- maven-surefire-plugin:2.21.0:test (default-test) @ example ---
[INFO]
[INFO] -------------------------------------------------------
[INFO]  T E S T S
[INFO] -------------------------------------------------------
[INFO] Running DynamicModelTest
[INFO] Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.023 s - in DynamicModelTest
[INFO]
[INFO] Results:
[INFO]
[INFO] Tests run: 1, Failures: 0, Errors: 0, Skipped: 0
[INFO]
[INFO]
[INFO] --- maven-jar-plugin:2.4:jar (default-jar) @ example ---
[INFO] Building jar: /private/tmp/jacoco/target/example-1.0-SNAPSHOT.jar
[INFO]
[INFO] --- jacoco-maven-plugin:0.8.1:report (default) @ example ---
[INFO] Loading execution data file /private/tmp/jacoco/target/jacoco.exec
[INFO] Analyzed bundle 'example' with 1 classes

与上次尝试相比,这次执行了测试。和覆盖报告 target/jacoco-ut/default/Status.html 看起来像:

我认为测试未执行的原因在于 default value of includes of maven-surefire-plugin :

指定测试(按模式)的元素列表应该包括在测试中。当未指定和测试时未指定参数,默认包括
<includes>
    <include>**/Test*.java</include>
    <include>**/*Test.java</include>
    <include>**/*Tests.java</include>
    <include>**/*TestCase.java</include>
</includes>

DynamicModelTester.java 不符合这些模式,而 DynamicModelTest.java 第二个匹配,但我将把这个作为一个小练习来验证。