请考虑：

package de.test;
    public class MyService {
      int invocations = 0;
      public void doSomething(int x){
        invocations++;
        if (invocations==5){
          throw new RuntimeException("exception");
        }
        return;
      };
    }

    package de.test;

    public class MyProcessor {
      private MyService myService;

      public MyProcessor(MyService myService) {
        this.myService = myService;
      }

      public void process(int n) {
        myService.doSomething(n);
        System.out.println("Processed: " + n);
      }
    }

此测试代码：

package de.test;

  import de.bodo.MyProcessor;
  import de.bodo.MyService;
  import org.junit.jupiter.api.Test;
  import org.mockito.Mockito;

  public class ProcessorTest {

    @Test
    public void processTest() {
      MyService myService = Mockito.spy(new MyService());
      MyProcessor myProcessor = new MyProcessor(myService);

      myProcessor.process(0);
      myProcessor.process(1);
      myProcessor.process(2);
      myProcessor.process(2);
      RuntimeException thrown = assertThrows( RuntimeException.class,
         ()-> myProcessor.process(2),
         " expected exception" );
      myProcessor.process(2);

      Mockito.verify(myService, Mockito.atMostOnce()).doSomething(0);
      Mockito.verify(myService, Mockito.atMostOnce()).doSomething(1);
      Mockito.verify(myService, Mockito.atMost(4)).doSomething(2);
      Mockito.verify(myService, Mockito.atLeastOnce()).doSomething(1);
      Mockito.verify(myService, Mockito.atLeast(2)).doSomething(2);
      Mockito.verify(myService, Mockito.times(4)).doSomething(2);
      Mockito.verify(myService, Mockito.never()).doSomething(3);    
    }
  }

因此，您不仅可以检查方法被调用的频率，甚至还可以计算使用一个特定参数（本例中为整数）调用方法的频率。
您需要将Mockito添加到pom.xml中：

!-- https://mvnrepository.com/artifact/org.mockito/mockito-junit-jupiter -->
        <dependency>
            <groupId>org.mockito</groupId>
            <artifactId>mockito-junit-jupiter</artifactId>
            <version>4.8.1</version>
            <scope>test</scope>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.mockito/mockito-core -->
        <dependency>
            <groupId>org.mockito</groupId>
            <artifactId>mockito-core</artifactId>
            <version>4.8.1</version>
            <scope>test</scope>
        </dependency>

来源：https://www.logicbig.com/tutorials/unit-testing/mockito/verifying-varing-number-of-invocations.html