/**
* Copyright (c) 2014-present, Facebook, Inc.
* All rights reserved.
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*/
package com.facebook.react.tests;
import java.util.ArrayList;
import android.view.View;
import android.widget.HorizontalScrollView;
import com.facebook.react.testing.AbstractScrollViewTestCase;
import com.facebook.react.testing.SingleTouchGestureGenerator;
import com.facebook.react.uimanager.PixelUtil;
/**
* Integration test for horizontal ScrollView.
* See ScrollViewTestModule.js
*/
public class ReactHorizontalScrollViewTestCase extends AbstractScrollViewTestCase {
@Override
protected String getReactApplicationKeyUnderTest() {
return "HorizontalScrollViewTestApp";
}
private void dragLeft() {
dragLeft(200);
}
private void dragLeft(int durationMs) {
createGestureGenerator()
.startGesture(150, 50)
.dragTo(50, 60, 10, durationMs)
.endGesture(50, 60);
}
public void testScrolling() {
HorizontalScrollView scrollView = getViewAtPath(0);
assertNotNull(scrollView);
assertEquals(0, scrollView.getScrollX());
dragLeft();
assertTrue("Expected to scroll by at least 50 pixels", scrollView.getScrollX() >= 50);
}
public void testScrollEvents() {
HorizontalScrollView scrollView = getViewAtPath(0);
dragLeft();
waitForBridgeAndUIIdle();
mScrollListenerModule.waitForScrollIdle();
waitForBridgeAndUIIdle();
ArrayList<Double> xOffsets = mScrollListenerModule.getXOffsets();
assertFalse("Expected to receive at least one scroll event", xOffsets.isEmpty());
assertTrue("Expected offset to be greater than 0", xOffsets.get(xOffsets.size() - 1) > 0);
assertTrue(
"Expected no item click event fired",
mScrollListenerModule.getItemsPressed().isEmpty());
assertEquals(
"Expected last offset to be offset of scroll view",
PixelUtil.toDIPFromPixel(scrollView.getScrollX()),
xOffsets.get(xOffsets.size() - 1).doubleValue(),
1e-5);
}
public void testScrollAndClick() throws Exception {
SingleTouchGestureGenerator gestureGenerator = createGestureGenerator();
// Slowly drag the ScrollView to prevent fling
dragLeft(15000);
waitForBridgeAndUIIdle();
getInstrumentation().waitForIdleSync();
// Find visible item to be clicked
View visibleItem = null;
int visibleItemNumber = 0;
for (; visibleItemNumber < 100; visibleItemNumber++) {
visibleItem = getViewAtPath(0, 0, visibleItemNumber);
int pos[] = new int[2];
visibleItem.getLocationInWindow(pos);
if (pos[0] >= 0) {
break;
}
}
// Click first visible item
gestureGenerator.startGesture(visibleItem).endGesture();
waitForBridgeAndUIIdle();
ArrayList<Double> xOffsets = mScrollListenerModule.getXOffsets();
ArrayList<Integer> itemIds = mScrollListenerModule.getItemsPressed();
assertFalse("Expected to receive at least one scroll event", xOffsets.isEmpty());
assertTrue("Expected offset to be greater than 0", xOffsets.get(xOffsets.size() - 1) > 0);
assertEquals("Expected to receive exactly one item click event", 1, itemIds.size());
assertEquals(visibleItemNumber, (int) itemIds.get(0));
}
/**
* Verify that 'scrollTo' command makes ScrollView start scrolling
*/
public void testScrollToCommand() throws Exception {
HorizontalScrollView scrollView = getViewAtPath(0);
ScrollViewTestModule jsModule =
getReactContext().getCatalystInstance().getJSModule(ScrollViewTestModule.class);
assertEquals(0, scrollView.getScrollX());
jsModule.scrollTo(300, 0);
waitForBridgeAndUIIdle();
getInstrumentation().waitForIdleSync();
// Unfortunately we need to use timeouts here in order to wait for scroll animation to happen
// there is no better way (yet) for waiting for scroll animation to finish
long timeout = 10000;
long interval = 50;
long start = System.currentTimeMillis();
while (System.currentTimeMillis() - start < timeout) {
if (scrollView.getScrollX() > 0) {
break;
}
Thread.sleep(interval);
}
assertNotSame(0, scrollView.getScrollX());
}
}