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package com.jxw.graphql;
import android.support.test.InstrumentationRegistry;
import android.support.test.espresso.IdlingRegistry;
import android.support.test.espresso.idling.CountingIdlingResource;
import android.support.test.runner.AndroidJUnit4;
import android.support.test.rule.ActivityTestRule;
import com.jxw.graphql.test_utils.TestDemoApplication;
import com.jxw.graphql.utils.EspressoIdlingResource;
import com.jxw.graphql.view.MainActivity;
import static android.support.test.espresso.Espresso.onView;
import static android.support.test.espresso.assertion.ViewAssertions.matches;
import static android.support.test.espresso.matcher.ViewMatchers.isDisplayed;
import static android.support.test.espresso.matcher.ViewMatchers.withId;
import static android.support.test.espresso.matcher.ViewMatchers.withText;
import static org.hamcrest.CoreMatchers.not;
import org.junit.After;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.runner.RunWith;
import java.io.IOException;
import okhttp3.mockwebserver.MockResponse;
import okhttp3.mockwebserver.MockWebServer;
@RunWith(AndroidJUnit4.class)
public class TutorialVersionMainActivityTest {
private CountingIdlingResource countingIdlingResource = EspressoIdlingResource.getCountIdlingResource();
/**
* TODO: Move the data containing variables into a data class
*/
private static final String SUCCESS_RESPONSE = "{" +
"\"data\":{" +
" \"allTeachers\":[" +
" {" +
" \"name\":\"John Doe\"," +
" \"subject\":\"cs300\"," +
" \"__typename\":\"Teacher\"," +
" \"id\":\"cjs1ucrri6yqe016794qlaclq\"," +
" \"createdAt\":\"2019-02-12T14:07:53.000Z\"" +
" }," +
" {" +
" \"name\":\"William Smith\"," +
" \"subject\":\"SLT101\"," +
" \"__typename\":\"Teacher\"," +
" \"id\":\"cjs1uixtu1f6g019507d0ksrk\"," +
" \"createdAt\":\"2019-02-12T14:12:41.000Z\"" +
" }" +
" ]" +
"}}";
@Rule
public ActivityTestRule<MainActivity> mainActivityTestRule = new ActivityTestRule<>(MainActivity.class, true, false);
@Before
public void setUp() {
// Espresso Idling Resource registration
IdlingRegistry.getInstance().register(countingIdlingResource);
}
@Test
public void testTeachersAreDisplayed() throws IOException {
/**
* Setting up mockWebServer at localhost:9900.
*/
MockWebServer server = new MockWebServer();
// start the server at port 9900
server.start(9900);
/**
* Get the target application context during testing and cast onto the TestDemoApplication
*/
TestDemoApplication testApp = (TestDemoApplication) InstrumentationRegistry.getTargetContext().getApplicationContext();
// Set the base url of the test app using the url of the mocked local server
testApp.setBaseUrl(server.url("/").toString());
// Enqueue the response you want the server to respond with when querried in the course to this test.
server.enqueue(new MockResponse().setBody(SUCCESS_RESPONSE));
// LAUNCH ACTIVITY
mainActivityTestRule.launchActivity(null);
// UI testing
onView(withText("John Doe")).check(matches(isDisplayed()));
onView(withText("William Smith")).check(matches(isDisplayed()));
// Shut down the server when done with testing
server.shutdown();
}
@After
public void tearDown() {
IdlingRegistry.getInstance().unregister(countingIdlingResource);
}
}
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