java - 测试不通过 Maven 运行？

Question

当我在 Maven 中运行测试时，我得到:

[INFO] -------------------------------------------------------    
[INFO]  T E S T S     
[INFO] -------------------------------------------------------   
[INFO]   
[INFO] Results:  
[INFO]   
[INFO] Tests run: 0, Failures: 0, Errors: 0, Skipped: 0

我的测试类 JsonReaderTest.class 位于 src/test/java 中，并且据我从 maven-surefire-plugin 了解到，遵循正确的名称约定。

在 Maven 外部运行时测试运行良好。

我的 pom 中包含这个插件:

<!-- Executes tests -->
<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-surefire-plugin</artifactId>
    <version>2.20.1</version>
</plugin>

这在我的依赖项中:

<!-- Test -->
<dependency>
    <groupId>org.junit.jupiter</groupId>
    <artifactId>junit-jupiter-api</artifactId>
    <version>5.0.0</version>
</dependency>

<dependency>
    <groupId>org.junit.jupiter</groupId>
    <artifactId>junit-jupiter-engine</artifactId>
    <version>5.0.0</version>
</dependency>

和我的测试类:

package org.avalin.optaplanner.test.java;

import org.avalin.optaplanner.json.JsonReader;
import org.junit.jupiter.api.*;

import java.io.FileNotFoundException;
import java.nio.file.Paths;

import static org.junit.jupiter.api.Assertions.*;

public class JsonReaderTest
{
    @Test
    @DisplayName("Test: No such file at designated path")
    void testloadFromJsonTest() throws Exception
    {
        Throwable exception = assertThrows(FileNotFoundException.class, 
        ()-> JsonReader.loadFromJson(".json"));
        assertEquals(".json (No such file or directory)", 
        exception.getMessage());
    }

    @Test
    @DisplayName("Test: Load Shifts from JSON (String instead of number)")
    void testLoadShiftsFromJson3()
    {
        Throwable exception = assertThrows(NumberFormatException.class, ()-> JsonReader.loadFromJson(Paths.get("src/main/resources/org/avalin/optaplanner/json/faultyShift-2.json").toAbsolutePath().toString()));
        assertEquals("\nOne or more of your \"shift\" elements has a number format exception.\n" +
            "Check for errors in your JSON-properties.\n" +
            "(Did you insert a string instead of a number in id?)", 
        exception.getMessage());
    }

    @Test
    @DisplayName("Test: JSON is correctly loaded")
    void testJsonIsLoaded()
    {
        assertFalse(JsonReader.jsonIsLoaded());
    }

    @AfterEach
    void cleanJsonReader()
    {
        JsonReader.cleanJsonReader();
    }
}

当我尝试用谷歌搜索这个问题时，似乎唯一可能出错的就是命名约定(类必须以 test 结尾或开始，我测试了两者，没有任何更改)并且测试类应该放入适当的文件夹。

当我运行时:mvn -Dtest=JsonReaderTest 测试

我得到以下信息:

Failed to execute goal org.apache.maven.plugins:maven-surefire-
plugin:2.20.1:test (default-test) on project optaplanner: No tests were 
executed!  

JsonReaderTest.class 也在 target/test-classes 中正确生成

这里的罪魁祸首是什么？

Answer 1

一起使用 Maven Surefire 插件和 JUnit 5 需要一些调整......

来自the docs :

The JUnit team has developed a very basic provider for Maven Surefire that lets you run JUnit 4 and JUnit Jupiter tests via mvn test. The pom.xml file in the junit5-maven-consumer project demonstrates how to use it and can serve as a starting point.

Due to a memory leak in Surefire 2.20, the junit-platform-surefire-provider currently only works with Surefire 2.19.1.

...
<build>
    <plugins>
        ...
        <plugin>
            <artifactId>maven-surefire-plugin</artifactId>
            <version>2.19</version>
            <dependencies>
                <dependency>
                    <groupId>org.junit.platform</groupId>
                    <artifactId>junit-platform-surefire-provider</artifactId>
                    <version>1.0.0</version>
                </dependency>
            </dependencies>
        </plugin>
    </plugins>
</build>
...