@Test
        @SneakyThrows
        @DirtiesContext
        void testServiceStubManuallyConfiguredDeadlineTakesPrecedenceOfTheConfigOne() {
            log.info(
                    "--- Starting test that manually configured deadline takes precedence of the config default request timeout ---");
            final StreamRecorder<SomeType> streamRecorder = StreamRecorder.create();
            StreamObserver<SomeType> echo =
                    this.testServiceStub.withDeadlineAfter(5L, TimeUnit.SECONDS).echo(streamRecorder);
            TimeUnit.SECONDS.sleep(2);
            echo.onNext(SomeType.getDefaultInstance());
            assertNull(streamRecorder.getError());
            assertNotNull(streamRecorder.firstValue().get().getVersion());
            log.info("--- Test completed --- ");
        }
These tests check the property {@link GrpcChannelProperties#getDefaultRequestTimeout()}}.
tests/src/test/java/net/devh/boot/grpc/test/setup/DefaultRequestTimeoutSetupTests.java