Gradle：找不到sourceSets.test.classes

Question

我试图让我的一个项目（ProjectA）生成一个包含所有测试类的jar文件，以便可以在ProjectB中使用它。

I did a bit of research and found this as possible solution: Create test jar artifact in gradle. That says that the following code snippet should do the trick.

apply plugin: 'java'

task testJar(type: Jar) {
   classifier = 'tests'
   from sourceSets.test.classes
}

However, when I add the above to my build.gradle, I get the following error message:

• What went wrong:

A problem occurred evaluating root project 'gradle_project'.

Could not find property 'sourceSets' on task ':testJar'.

I have searched on both Google and the Gradle documentation for more information but either it has been removed without documenting it anywhere that I could find or I am using it wrong. I am suspecting the latter, just don't know what I am doing wrong.

I have tried the same code snippet inside mysubprojects{} section but then I got the following error message:

• What went wrong:

A problem occurred evaluating root project 'gradle_project'.

无法在源集测试中获取只写属性“类”的值。

Answer 1

通过以下步骤解决了它：

第 1 步：将代码片段移到该subprojects{}部分内

第 2 步：sourceSets.test.classes已删除。sourceSets.test.output似乎可以解决问题。发现这个：Creating a Jar of test binaries - Gradle