两种运行模式

配置所有测试方法都并行

junit.jupiter.execution.parallel.enabled = true
junit.jupiter.execution.parallel.mode.default = concurrent

配置top-level类并行，测试方法同一线程执行

junit.jupiter.execution.parallel.enabled = true
junit.jupiter.execution.parallel.mode.default = same_thread
junit.jupiter.execution.parallel.mode.classes.default = concurrent

配置top-level类串行，测试方法并行

junit.jupiter.execution.parallel.enabled = true
junit.jupiter.execution.parallel.mode.default = concurrent
junit.jupiter.execution.parallel.mode.classes.default = same_thread

 相关参数

属性	描述	支持的值	默认值
junit.jupiter.execution.parallel.enabled	是否允许并行	true false	false
junit.jupiter.execution.parallel.mode.default	test tree的默认执行模式	concurrent same_thread	same_thread
junit.jupiter.execution.parallel.mode.classes.default	top-level类的默认执行模式	concurrent same_thread	same_thread
junit.jupiter.execution.parallel.config.strategy	默认线程和最大线程数的策略	dynamic fixed custom	dynamic
junit.jupiter.execution.parallel.config.dyna mic.factor	dynamic配置的系数	数值	1
junit.jupiter.execution.parallel.config.fixed.parallelism	fixed配置的线程数	数值	无默认
junit.jupiter.execution.parallel.config.custom.class	custom配置的策略类	类	无默认

2、同步

@Execution(CONCURRENT)
class SharedResourcesDemo {
	private Properties backup;
	
	@BeforeEach
	void backup() {
		backup = new Properties();
		backup.putAll(System.getProperties());
	}
	
	@AfterEach
	void restore() {
		System.setProperties(backup);
	}
	
	@Test
	@ResourceLock(value = SYSTEM_PROPERTIES, mode = READ)
	void customPropertyIsNotSetByDefault() {
		assertNull(System.getProperty("my.prop"));
	}
	
	@Test
	@ResourceLock(value = SYSTEM_PROPERTIES, mode = READ_WRITE)
	void canSetCustomPropertyToApple() {
		System.setProperty("my.prop", "apple");
		assertEquals("apple", System.getProperty("my.prop"));
	}
	
	@Test
	@ResourceLock(value = SYSTEM_PROPERTIES, mode = READ_WRITE)
	void canSetCustomPropertyToBanana() {
		System.setProperty("my.prop", "banana");
		assertEquals("banana", System.getProperty("my.prop"));
	}
}