FakeApplication using a specific application.conf?

Question

How can I create a FakeApplication to run my tests using my dev.conf instead of the default application.conf?

My current test consists of the following construct:

Map<String, String> map = new HashMap<>();
map.put("config.file", "/path/to/dev.conf");
FakeApplication fakeApplication = fakeApplication(map);
TestServer testServer = testServer(3333, fakeApplication);
// testServer.start();
running(testServer, HTMLUNIT, new F.Callback<TestBrowser>() {
    public void invoke(TestBrowser browser) {
        //do something
    }
});

This code adapted from the Play Framework Documentation about writing test throws the following Exception, as the default application.conf does not work on my development-system. If I uncomment testServer.start(); I can see it even more clearly.

[WARN] [01/01/2013 18:36:59.505] [pool-4-thread-3] [Dispatchers] Dispatcher [akka.actor.promises-dispatcher] not configured, using default-dispatcher
[WARN] [01/01/2013 18:36:59.521] [play-akka.actor.default-dispatcher-2] [Dispatchers] Dispatcher [akka.actor.actions-dispatcher] not configured, using default-dispatcher
[error] Test test.ApplicationTest.runInBrowser failed: Server is not started!
[error]     at scala.sys.package$.error(package.scala:27)
[error]     at play.api.test.TestServer.stop(Selenium.scala:117)
[error]     at play.test.Helpers.stop(Helpers.java:325)
[error]     at play.test.Helpers.running(Helpers.java:355)
[error]     at test.ApplicationTest.runInBrowser(ApplicationTest.java:74)
[error]     ...

I assume the line

map.put("config.file", "/path/to/dev.conf");

is wrong and has to be adapted. But how?

Answer 1

I have the same issue and I did something like this to solve it:

  private Configuration additionalConfigurations;

  @Before
  public void initialize() {
    ClassLoader cl = ClassLoader.getSystemClassLoader();
    Config additionalConfig  =ConfigFactory.parseFile(newFile(cl.getResource("application.dev.conf").getF)));
    additionalConfigurations = new Configuration(additionalConfig);
  }
  @Test
  public void testPropertiesGetLoaded() throws Exception{

    running(testServer(3333, fakeApplication(additionalConfigurations.asMap())), HTMLUNIT, new F.Callback<TestBrowser>(){
      public void invoke(TestBrowser browser) throws InterruptedException {

        String specificProperty = Play.application().configuration().getString("db.ro.url");
        Logger.info("printingVar:" + specificProperty);

      }
    });
  }

where application.dev.conf can be whaterver config file you want to set in there.

Answer 2

You may also want to check out this option:

http://alexgaribay.com/2015/02/05/overwrite-settings-for-testing-in-play-framework/

Answer 3

It is impossible to substitute main config with another this way. You only could override specific settings by passing a map to fakeApplication.

I.e. if you config contains:

mongodb.default.uri = ...
logger.root = ERROR

You can override it by placing new values inside a map:

Map<String, String> map = new HashMap<>();
map.put("mongodb.default.uri", "...");
map.put("logger.root", "INFO");

FakeApplication fakeApplication = fakeApplication(map);

Answer 4

I think you might want to run your test command as follows:

play -Dconfig.file=path/to/dev.conf test