Testing backend timeout with Restassured

Question

I'm using RestAssured 2.4.1 to test a service stack whose first service is exposed via REST.

Now, I want to test the behaviour when the backend is not responding, a situation that the REST service is supposed to detect and handle. Unfortunately, RestAssured terminates the POST request before the REST service detects the backend timeout.

How can I increase the corresponding timeout of RestAssured? I'm trying the following without success

RestAssuredConfig config = RestAssured.config();
config.getHttpClientConfig()
            .setParam(ClientPNames.CONN_MANAGER_TIMEOUT, 0)  // HttpConnectionManager connection return time
            .setParam(CoreConnectionPNames.CONNECTION_TIMEOUT, 0) // Remote host connection time
            .setParam(CoreConnectionPNames.SO_TIMEOUT,  0) ; // Remote host response time

given()
    .config(config)
    . ...

Answer 1

What exactly is timing out?

If your test is using org.junit.Test then you can set the timeout explicitly. The following sets the timeout to 60 seconds (60000 milliseconds):

@Test(timeout = 60000)
public void canCallFullyQualifiedUrlsWithoutPortDefined() throws Exception {
    // This test hangs forever unless it works
    get("http://filehost-semc-rss-dev.s3.amazonaws.com/testfile1.txt");
}

You can get the actual response time from rest-assured:

@Test public void
response_time_can_be_extracted() {
    long time =
    given().
            param("firstName", "John").
            param("lastName", "Doe").
    when().
            get("/greet").
    then().
            extract().response().time();

    assertThat(time, greaterThan(0L));
}

Answer 2

I'm using RestAssured 3.0.1, but this is how I fixed this - yet globally (I actually wanted to lower the default timeout). I also use the SystemDefaultHttpClient, as I want to reuse connections (HTTP keepalive). Thus it does not fit 100%, but might give pointers.

HttpClientConfig clientConfig = RestAssured.config().getHttpClientConfig();
clientConfig = clientConfig.httpClientFactory(new HttpClientConfig.HttpClientFactory() {
    @Override
    public HttpClient createHttpClient() {
        HttpClient rv =  new SystemDefaultHttpClient();
        HttpParams httpParams = rv.getParams();
        HttpConnectionParams.setConnectionTimeout(httpParams, 5 * 1000); //Wait 5s for a connection
        HttpConnectionParams.setSoTimeout(httpParams, 60 * 1000); // Default session is 60s
        return rv;
    }
});

//This is necessary to ensure, that the client is reused.
clientConfig = clientConfig.reuseHttpClientInstance();

RestAssured.config = RestAssured.config().httpClient(clientConfig);