custom error message for assertThat() in junit?

Question

I was wondering if assertThat() has a way of adding a custom error message ?

for example in this :

assertThat(file.exists(), is(equalTo(true)));

I would like to add some custom message, saying which file name doesnt exist

Answer 1

I would prefer the following, to avoid the reader believing that you wish to assert that the file name doesn't exist..!

assertThat("File name should exist", file.exists(), is(equalTo(true)));