如何正确使用java流形库中的Jailbreak进行junit测试？

Question

我正在使用java的manifold扩展库进行junit测试，即使在严格遵循了它们的docs之后，我也不知道我做错了什么。

// My Class 
package practice_junit;

public class SomeClass
{
    public SomeClass()
    {

    }

    private String get_string()
    {
        return "ABCDE";
    }
}

// My Unit Test Class -- first way
package practice_junit;

import manifold.ext.api.Jailbreak;
import static org.junit.Assert.assertEquals;
import org.junit.Test;

public class SomeClassTest
{
    public SomeClassTest()
    {

    }

    @Test
    public void assert_equals_true_test()
    {
        @Jailbreak SomeClass sc = new SomeClass();
        assertEquals("Error equals","ABCDE",sc.get_string());
    }
}

// My Unit Test Class -- second way
package practice_junit;

import manifold.ext.api.Jailbreak;
import static org.junit.Assert.assertEquals;
import org.junit.Test;

public class SomeClassTest
{
    public SomeClassTest()
    {

    }

    @Test
    public void assert_equals_true_test()
    {
        SomeClass sc = new SomeClass();
        assertEquals("Error equals","ABCDE",sc.jailbreak().get_string());
    }
}

在这两种情况下，我都得到了相同的错误日志：

PS C:\Users\> gradle build

> Task :compileTestJava FAILED
C:\Users\SomeClassTest.java:19: error: get_string() has private access in SomeClass
                assertEquals("Error equals","ABCDE",sc.get_string());
                                                      ^
1 error

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':compileTestJava'.
> Compilation failed; see the compiler error output for details.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 1m 9s
3 actionable tasks: 1 executed, 2 up-to-date

我使用gradle和流形扩展依赖项作为https://mvnrepository.com/artifact/systems.manifold/manifold-ext/2019.1.12中的compile group: 'systems.manifold', name: 'manifold-ext', version: '2019.1.12'

Answer 1

您使用的是什么版本的Java？如果是Java 9或更高版本，您是否在使用JPMS (模块)？如果你发布你的Gradle脚本，我可以帮助你正确地设置它。更好的方法是，使用指向您项目的链接的post an issue on the manifold github。可能没有显式设置-- 9+ -path，这是使用Java的Gradle脚本中非常常见的问题。以下是相关的部分：

dependencies {
    compile group: 'systems.manifold', name: 'manifold-ext', version: '2019.1.12'
    testCompile group: 'junit', name: 'junit', version: '4.12'

    // Add manifold to -processorpath for javac (for Java 9+)
    annotationProcessor group: 'systems.manifold', name: 'manifold-ext', version: '2019.1.12'
}

compileJava {
    doFirst() {
        // If you DO NOT define a module-info.java file:
        options.compilerArgs += ['-Xplugin:Manifold']

        // if you DO define a module-info.java file:
        //options.compilerArgs += ['-Xplugin:Manifold', '--module-path', classpath.asPath]
        //classpath = files()
    }
}

Manifold项目倾向于在任何地方都使用Maven；Gradle设置文档没有那么精致。