How to assertThat something is null with Hamcrest?

Question

How would I assertThat something is null?

for example

 assertThat(attr.getValue(), is(\"\"));

But I get an e

Answer 1

Use the following (from Hamcrest):

assertThat(attr.getValue(), is(nullValue()));

In Kotlin is is reserved so use:

assertThat(attr.getValue(), `is`(nullValue()));