wrote empty modal e2e's

AndroidE2E/app/src/androidTest/java/com/reactnativenavigation/e2e/androide2e/BaseTest.java

@@ -77,6 +77,8 @@ public abstract class BaseTest {
 
 	public void assertExists(BySelector selector) {
 		assertThat(device().wait(Until.hasObject(selector), TIMEOUT)).isTrue();
+		assertThat(device().findObject(selector).getVisibleCenter().x).isPositive().isLessThan(device().getDisplayWidth());
+		assertThat(device().findObject(selector).getVisibleCenter().y).isPositive().isLessThan(device().getDisplayHeight());
 	}
 
 	public void swipeOpenLeftSideMenu() {

AndroidE2E/app/src/androidTest/java/com/reactnativenavigation/e2e/androide2e/ModalsTest.java

@@ -0,0 +1,61 @@
+package com.reactnativenavigation.e2e.androide2e;
+
+import android.support.test.uiautomator.By;
+
+import org.junit.Ignore;
+import org.junit.Test;
+
+import static org.junit.Assert.fail;
+
+public class ModalsTest extends BaseTest {
+	@Ignore
+	@Test
+	public void showModal() throws Exception {
+		launchTheApp();
+		assertMainShown();
+		elementByText("SHOW MODAL").click();
+		assertExists(By.text("Modal Screen"));
+	}
+
+	@Ignore
+	@Test
+	public void dismissModal() throws Exception {
+		fail("to implement");
+	}
+
+	@Ignore
+	@Test
+	public void showMultipleModals() throws Exception {
+		fail("to implement");
+	}
+
+	@Ignore
+	@Test
+	public void dismissUnknownContainerId() throws Exception {
+		fail("to implement");
+	}
+
+	@Ignore
+	@Test
+	public void dismissModalByContainerIdWhenNotOnTop() throws Exception {
+		fail("to implement");
+	}
+
+	@Ignore
+	@Test
+	public void dismissAllPreviousModalsByIdWhenTheyAreBelowTopPresented() throws Exception {
+		fail("to implement");
+	}
+
+	@Ignore
+	@Test
+	public void dismissSomeModalByIdDeepInTheStack() throws Exception {
+		fail("to implement");
+	}
+
+	@Ignore
+	@Test
+	public void dismissAllModals() throws Exception {
+		fail("to implement");
+	}
+}