@Test
public void shouldReturnNullOnInvalidSessionName() throws IOException {

    assertThat(fileSessionStorage.getSession(null), is(nullValue()));
    assertThat(fileSessionStorage.getSession("abcX8"), is(nullValue()));
    assertThat(fileSessionStorage.getSession("/asdfghjklzxasdfghjklzxasdfghjklzxz"), is(nullValue()));
}