How to run the multiple tests with different weight Groovy way

第一种考逻辑实现

@Test
public void test(){
    switch (grinder.threadnumber % 10) {
        case 1..5:
            doTest1()
            break
        case 6..8:
            doTest2()
            break
        default :
            doTest3()
            break
    }
}

public void doTest1() {
    ...
}

public void doTest2() {
    ...
}

public void doTest3() {
    ...
}

第二种

@RunWith(GrinderRunner)
class TestRunner {
    ...
    @RunRate(50)
    @Test
    void doTest1() {
           ...
    }

    @RunRate(20)
    @Test
    void doTest2() {
           ...
    }
}