JerseyClientBuilderTest - Original

@Test
public void throwsAnExceptionWithoutAnEnvironmentAndOnlyAThreadPool() throws Exception {
    try {
        builder.using(executorService).build("test");
        failBecauseExceptionWasNotThrown(IllegalStateException.class);
    } catch (IllegalStateException e) {
        assertThat(e.getMessage())
            .isEqualTo("Must have either an environment or both an executor service and an object mapper");
    }
}