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Forked from he9lin/AsyncTaskTests.java
Created October 23, 2016 15:44
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How to test AsyncTask in Android
package jieqoo.android.KASS.test.tasks;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import jieqoo.android.models.RESTListener;
import jieqoo.android.models.RESTResponse;
import jieqoo.android.tasks.FetchRESTResponseTask;
import jieqoo.android.util.Configuration;
import android.test.InstrumentationTestCase;
import android.util.Log;
public class FetchRESTResponseTaskTests extends InstrumentationTestCase {
private static final String TAG = "FetchRESTResponseTaskTests";
private static final String BOUNDS = "30.371737637334984,120.33188021826174,30.23568452886941,119.97825778173831";
private static final String URL = "http://" + Configuration.HOST + "/v1/listings?box=" + BOUNDS;
private static boolean called;
protected void setUp() throws Exception {
super.setUp();
called = false;
}
protected void tearDown() throws Exception {
super.tearDown();
}
public final void testSuccessfulFetch() throws Throwable {
// create a signal to let us know when our task is done.
final CountDownLatch signal = new CountDownLatch(1);
// Execute the async task on the UI thread! THIS IS KEY!
runTestOnUiThread(new Runnable() {
@Override
public void run() {
new FetchRESTResponseTask(URL, "", new RESTListener() {
public void onSuccess(Object response) {
Log.d(TAG, "RESTListener: on success callback");
called = true;
}
public void onError(Object response) { }
}) {
@Override
protected void onPostExecute(RESTResponse response) {
Log.d(TAG, "running onPostExecute");
super.onPostExecute(response);
/* This is the key, normally you would use some type of listener
* to notify your activity that the async call was finished.
*
* In your test method you would subscribe to that and signal
* from there instead.
*/
signal.countDown();
}
}.execute();
}
});
/* The testing thread will wait here until the UI thread releases it
* above with the countDown() or 30 seconds passes and it times out.
*/
signal.await(10, TimeUnit.SECONDS);
assertTrue(called);
}
}
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