Simplify AssertJ hasSize(0) to isEmpty() for Iterable#1037
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The existing rule targeted java.util.Collection, so an actual typed as the broader java.lang.Iterable was not matched. Widen the required type to java.lang.Iterable, which subsumes the Collection case. Fixes #811
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What's changed
assertThat(x).hasSize(0)is already simplified toassertThat(x).isEmpty()forString,File,Collection, andMap. ButSimplifyAssertJAssertiongates onTypeUtils.isAssignableTo(requiredType, actualType), so an actual typed as the broaderjava.lang.Iterablewas not matched by thejava.util.Collectionentry (Iterable is a supertype of Collection, not assignable to it).This widens the required type to
java.lang.Iterable, which subsumes theCollectioncase since everyCollectionis assignable toIterable.Confirmed by adding the issue's own reproduction case to
AssertJBestPracticesTest.SonarDedicatedAssertions#replacements, which failed before and passes after.