Map equality using Hamcrest

Question

I\'d like to use hamcrest to assert that two maps are equal, i.e. they have the same set of keys pointing to the same values.

My current best guess is:

a         


        

Answer 1

If you need to compare a set of results with expectations and if you choose to use assertj library, you can do this:

// put set of expected values by your test keys
Map expectations = ...;

// for each test key get result
Map results = expectations.keySet().stream().collect(toMap(k -> k, k -> getYourProductionResult(k)));

assertThat(results).containsAllEntriesOf(expectations);

Note that containsAllEntriesOf does not compare maps for equality. If your production code returns actually a Map you may want to add a check for keys assertThat(results).containsOnlyKeys((K[]) expectations.keySet().toArray());