问题

报错：

Execution failed for task ':testDebugUnitTest'.

        > No tests found for given includes:

解决方案

1、一开始以为是没有给测试类加public修饰

2、然后替换 @Test 注解的包可以解决，将 org.junit.jupiter.api.Test 修改为 org.junit.Test

import org.junit.Test; //OK

import org.junit.jupiter.api.Test;//No use

org.junit.jupiter.api.Test是IDE 插件默认生成Test文件的引用。

两个类的实现是不一样的，介绍如下：

org.junit.jupiter.api

package org.junit.jupiter.api;

@Target({ ElementType.ANNOTATION_TYPE, ElementType.METHOD })
@Retention(RetentionPolicy.RUNTIME)
@Documented
@API(status = STABLE, since = "5.0")
@Testable
public @interface Test {
}

org.junit

package org.junit;


@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.METHOD})
public @interface Test {

    /**
     * Default empty exception.
     */
    static class None extends Throwable {
        private static final long serialVersionUID = 1L;

        private None() {
        }
    }

    /**
     * Optionally specify <code>expected</code>, a Throwable, to cause a test method to succeed if
     * and only if an exception of the specified class is thrown by the method. If the Throwable's
     * message or one of its properties should be verified, the
     * {@link org.junit.rules.ExpectedException ExpectedException} rule can be used instead.
     */
    Class<? extends Throwable> expected() default None.class;

    long timeout() default 0L;
}

Note：使用 org.junit.Test 的测试方法test要被public修饰。

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