test: add initial SessionController tests

test/ControllerTest.java

+import static org.junit.Assert.assertEquals;
+import static play.mvc.Http.Status.OK;
+import static play.test.Helpers.contentAsString;
+import static play.test.Helpers.contentType;
+import static play.test.Helpers.status;
+
+import java.util.Arrays;
+import java.util.List;
+
+import models.Session;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+
+import play.libs.Json;
+import play.mvc.Result;
+import play.test.FakeApplication;
+import play.test.Helpers;
+
+import com.avaje.ebean.EbeanServer;
+import com.avaje.ebeaninternal.server.ddl.DdlGenerator;
+import com.fasterxml.jackson.databind.JsonNode;
+
+import controllers.SessionController;
+
+public class ControllerTest {
+	public static FakeApplication app;
+	public static DdlGenerator ddl;
+	public static EbeanServer server;
+
+	@Before
+	public void setup() {
+		app = Helpers.fakeApplication(Helpers.inMemoryDatabase());
+		Helpers.start(app);
+	}
+
+	@After
+	public void stopApp() {
+		Helpers.stop(app);
+	}
+
+	@Test
+	public void testGetSessionsEmpty() {
+		// Empty Sessionlist
+		Result result = SessionController.getSessions();
+		assertEquals(OK, status(result));
+		assertEquals("application/json", contentType(result));
+
+		JsonNode json = Json.parse(contentAsString(result));
+		Session[] sessionArray = Json.fromJson(json, Session[].class);
+		assertEquals(0, sessionArray.length);
+	}
+
+	@Test
+	public void testGetSessions() {
+		// Filled Sessionlist
+		Session s1 = new Session("owner1", "Session1");
+		s1.save();
+		Session s2 = new Session("owner1", "Session2");
+		s2.save();
+
+		Result result = SessionController.getSessions();
+		assertEquals(OK, status(result));
+		assertEquals("application/json", contentType(result));
+
+		JsonNode json = Json.parse(contentAsString(result));
+		Session[] sessionArray = Json.fromJson(json, Session[].class);
+		List<Session> sessionList = Arrays.asList(sessionArray);
+
+		assertEquals(2, sessionArray.length);
+		assertEquals(Session.find.all(), sessionList);
+	}
+}
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