Question

In hamcrest (1.3.RC2, with no JUnit dependencies)
I am failing using iterableWithSize().

I have an (extension of) an Iterator parametrized with Content like this
EndResult<Content> contents = contentRepository.findAllByPropertyValue("title", "*content*");

where EndResult is
package org.springframework.data.neo4j.conversion;
public interface EndResult<R> extends Iterable<R> {...}
and Content is a my Pojo.

Now, I would think that this would work
assertThat(contents, iterableWithSize(1));

but it gives me the error :

The method assertThat(T, Matcher)
in the type Assert is not applicable
for the arguments
(EndResult< Content>, Matcher< Iterable< Object>>)

I also tried these failures :

assertThat(contents, iterableWithSize(equalTo(1));

assertThat(contents, IsIterableWithSize.<EndResult<Content>>.iterableWithSize(1));

These are my imports :

    import static org.hamcrest.CoreMatchers.equalTo;
    import static org.hamcrest.collection.IsCollectionWithSize.hasSize;
    import static org.hamcrest.collection.IsIterableWithSize.iterableWithSize;
    import static org.junit.Assert.assertEquals;
    import static org.junit.Assert.assertThat;
    import org.hamcrest.collection.IsIterableWithSize;

The hasSize for collections works as expected, but for iterators I cant even find a working example…

Answer 1

It should just be

assertThat(contents, IsIterableWithSize.<Content>iterableWithSize(1));

iterableWithSize is typed on the component type of your Iterable, not the concrete type of iterable itself.