how to use assertj extracting map property

Question

I am using AssertJ. I have a class like MyObj. And I have a List of MyObj.

class MyObj {
    ...
    Map<K,V> myMap;
    ...
}

When I use:

1. assertThat(list).extracting("myMap"), I cannot use .containsKey() method.
2. I also tried using assertThat(list).extracting("myMap", Map.class), but it does not work either.

What is the right way of using it?

Answer 1

AssertJ has entry() method. You can assert map value like this.

assertThat(list)
    .extracting("myMap")
    .contains(entry("foo1", "bar1"), entry("foo2", "bar2"));

Here's javadoc : http://joel-costigliola.github.io/assertj/core/api/org/assertj/core/data/MapEntry.html