How do I simplify mockito/hamcrest argument matchers in test method?

问题

The test method below appear in a spring-guide tutorial. Is there a less convoluted syntax to write this test or how can I break it apart into smaller chunks?

verify(orderService).createOrder(
      org.mockito.Matchers.<CreateOrderEvent>argThat(
        allOf( org.hamcrest.Matchers.<CreateOrderEvent>
            hasProperty("details",
                hasProperty("dateTimeOfSubmission", notNullValue())),

        org.hamcrest.Matchers.<CreateOrderEvent>hasProperty("details",
                hasProperty("name", equalTo(CUSTOMER_NAME))),

        org.hamcrest.Matchers.<CreateOrderEvent>hasProperty("details",
                hasProperty("address1", equalTo(ADDRESS1))),
        org.hamcrest.Matchers.<CreateOrderEvent>hasProperty("details",
                hasProperty("postcode", equalTo(POST_CODE)))
    )));

回答1:

You could switch the hasProperty and the allOf matchers.

verify(orderService).createOrder(
      org.mockito.Matchers.<CreateOrderEvent>argThat(
        org.hamcrest.Matchers.<CreateOrderEvent>hasProperty("details",
          allOf(
            hasProperty("dateTimeOfSubmission", notNullValue()),
            hasProperty("name", equalTo(CUSTOMER_NAME)),
            hasProperty("address1", equalTo(ADDRESS1)),
            hasProperty("postcode", equalTo(POST_CODE)))
    )));

回答2:

Another way is to use an argument captor to record the argument value you're trying to verify.

Then you can perform assertions on the value as you see fit. This is a much clearer way of verifying the argument information is what is expected than using matchers.

This is explained more fully in the this great blog entry:

http://www.planetgeek.ch/2011/11/25/mockito-argumentmatcher-vs-argumentcaptor/

来源：https://stackoverflow.com/questions/19482372/how-do-i-simplify-mockito-hamcrest-argument-matchers-in-test-method

标签

java

Spring

unit-testing

mockito

hamcrest