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Play Framework (Java) の fakeApplication を使ったテストをスッキリ書く

Last updated at Posted at 2013-07-09

fakeApplication を使ったテストを普通に書くと長いですよね。

running(fakeApplication(), new Runnable() {
    public void run() {
        // ...
    }
});

そこで、こんなクラスを用意しておくと……

GreatFakeApp.java
import org.junit.rules.ExternalResource;

import play.test.FakeApplication;
import play.test.Helpers;

public class GreatFakeApp extends ExternalResource {
	private FakeApplication app;
	
	@Override
	protected void before() throws Throwable {
		app = Helpers.fakeApplication();
		Helpers.start(app);
	}
	
	@Override
	protected void after() {
		Helpers.stop(app);
	}
}

JUnit の @ClassRule を使ってテストをこのように書けます。

HogeTest
import static org.fest.assertions.Assertions.assertThat;
import static play.test.Helpers.*;

import org.junit.ClassRule;
import org.junit.Test;

public class HogehogeTest {

	@ClassRule public static GreatFakeApp app = new GreatFakeApp();
	
	@Test public void test() {
		Result result = fakeRequest(GET, "/");
		assertThat(status(result)).isEqualTo(OK);
	}

}

スッキリ!

この場合は @BeforeClass のように、テストクラスごとに fakeApplication が作られます。

参考:

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