@Test
    void test() {
        final List<ClientInterceptor> interceptors = new ArrayList<>();
        this.annotationGlobalClientInterceptorConfigurer.configureClientInterceptors(interceptors);
        assertThat(interceptors).containsExactlyInAnyOrder(
                new ConfigAnnotatedClientInterceptor(),
                new ClassAnnotatedClientInterceptor());

        assertThat(this.globalClientInterceptorRegistry.getClientInterceptors()).containsExactlyInAnyOrder(
                new ConfigAnnotatedClientInterceptor(),
                new ClassAnnotatedClientInterceptor(),
                new ConfigurerClientInterceptor());

    }
Tests that {@link GrpcGlobalClientInterceptor}, {@link GlobalClientInterceptorConfigurer} and
{@link GlobalClientInterceptorRegistry} work as expected.
tests/src/test/java/net/devh/boot/grpc/test/interceptor/PickupClientInterceptorTest.java