Android Instrumentations tests are ready to be run in github/CI open source environment

Reviewed By: mkonicek

Differential Revision: D2769217

fb-gh-sync-id: 7469af816241d8b642753cca21f6542b971e9572

ReactAndroid/src/androidTest/java/com/facebook/react/testing/AbstractScrollViewTestCase.java

@@ -0,0 +1,114 @@
+/**
+ * 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.testing;
+
+import java.util.ArrayList;
+import java.util.concurrent.Semaphore;
+import java.util.concurrent.TimeUnit;
+
+import com.facebook.react.bridge.BaseJavaModule;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.bridge.JavaScriptModule;
+import com.facebook.react.testing.ReactInstanceSpecForTest;
+import com.facebook.react.testing.ReactAppInstrumentationTestCase;
+
+/**
+ * Shared by {@link ReactScrollViewTestCase} and {@link ReactHorizontalScrollViewTestCase}.
+ * See also ScrollViewTestModule.js
+ */
+public abstract class AbstractScrollViewTestCase extends ReactAppInstrumentationTestCase {
+
+  protected ScrollListenerModule mScrollListenerModule;
+
+  protected static interface ScrollViewTestModule extends JavaScriptModule {
+    public void scrollTo(float destX, float destY);
+  }
+
+  @Override
+  protected void tearDown() throws Exception {
+    waitForBridgeAndUIIdle(60000);
+    super.tearDown();
+  }
+
+  @Override
+  protected ReactInstanceSpecForTest createReactInstanceSpecForTest() {
+    mScrollListenerModule = new ScrollListenerModule();
+    return super.createReactInstanceSpecForTest()
+        .addNativeModule(mScrollListenerModule)
+        .addJSModule(ScrollViewTestModule.class);
+  }
+
+  // See ScrollViewListenerModule.js
+  protected static class ScrollListenerModule extends BaseJavaModule {
+
+    private final ArrayList<Double> mXOffsets = new ArrayList<Double>();
+    private final ArrayList<Double> mYOffsets = new ArrayList<Double>();
+    private final ArrayList<Integer> mItemsPressed = new ArrayList<Integer>();
+    private final Semaphore mScrollSignaler = new Semaphore(0);
+    private boolean mScrollBeginDragCalled;
+    private boolean mScrollEndDragCalled;
+
+    // Matches ScrollViewListenerModule.js
+    @Override
+    public String getName() {
+      return "ScrollListener";
+    }
+
+    @ReactMethod
+    public void onScroll(double x, double y) {
+      mXOffsets.add(x);
+      mYOffsets.add(y);
+      mScrollSignaler.release();
+    }
+
+    @ReactMethod
+    public void onItemPress(int itemNumber) {
+      mItemsPressed.add(itemNumber);
+    }
+
+    @ReactMethod
+    public void onScrollBeginDrag(double x, double y) {
+      mScrollBeginDragCalled = true;
+    }
+
+    @ReactMethod
+    public void onScrollEndDrag(double x, double y) {
+      mScrollEndDragCalled = true;
+    }
+
+    public void waitForScrollIdle() {
+      while (true) {
+        try {
+          boolean gotScrollSignal = mScrollSignaler.tryAcquire(1000, TimeUnit.MILLISECONDS);
+          if (!gotScrollSignal) {
+            return;
+          }
+        } catch (InterruptedException e) {
+          throw new RuntimeException(e);
+        }
+      }
+    }
+
+    public ArrayList<Double> getXOffsets() {
+      return mXOffsets;
+    }
+
+    public ArrayList<Double> getYOffsets() {
+      return mYOffsets;
+    }
+
+    public ArrayList<Integer> getItemsPressed() {
+      return mItemsPressed;
+    }
+
+    public boolean dragEventsMatch() {
+      return mScrollBeginDragCalled && mScrollEndDragCalled;
+    }
+  }
+}