How would I write a test case for the following steps so that the test cases run properly

@Test

void dequeueItemsHasRightValuesAndSize() {

Queue testQ = new Queue<>();

int result;

enqueueValues(testQ, 2, 6);

result = testQ.dequeue();

//Step 4: ADD ASSERTIONS: result should be 2, size should be 5, should not be empty

assertEquals("2", testQ.dequeue());

}