Add more tests for SwipeRefreshLayout.

Bug: 29518514
Change-Id: I6c5df04e9cf9622d44d5e7bcdf99f24384a6a843
diff --git a/core-ui/tests/java/android/support/v4/testutils/PollingCheck.java b/core-ui/tests/java/android/support/v4/testutils/PollingCheck.java
new file mode 100644
index 0000000..b4271f4
--- /dev/null
+++ b/core-ui/tests/java/android/support/v4/testutils/PollingCheck.java
@@ -0,0 +1,94 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.support.v4.testutils;
+
+import java.util.concurrent.Callable;
+
+import junit.framework.Assert;
+
+public abstract class PollingCheck {
+    private static final long TIME_SLICE = 50;
+    private long mTimeout = 3000;
+
+    public static interface PollingCheckCondition {
+        boolean canProceed();
+    }
+
+    public PollingCheck() {
+    }
+
+    public PollingCheck(long timeout) {
+        mTimeout = timeout;
+    }
+
+    protected abstract boolean check();
+
+    public void run() {
+        if (check()) {
+            return;
+        }
+
+        long timeout = mTimeout;
+        while (timeout > 0) {
+            try {
+                Thread.sleep(TIME_SLICE);
+            } catch (InterruptedException e) {
+                Assert.fail("unexpected InterruptedException");
+            }
+
+            if (check()) {
+                return;
+            }
+
+            timeout -= TIME_SLICE;
+        }
+
+        Assert.fail("unexpected timeout");
+    }
+
+    public static void check(CharSequence message, long timeout, Callable<Boolean> condition)
+            throws Exception {
+        while (timeout > 0) {
+            if (condition.call()) {
+                return;
+            }
+
+            Thread.sleep(TIME_SLICE);
+            timeout -= TIME_SLICE;
+        }
+
+        Assert.fail(message.toString());
+    }
+
+    public static void waitFor(final PollingCheckCondition condition) {
+        new PollingCheck() {
+            @Override
+            protected boolean check() {
+                return condition.canProceed();
+            }
+        }.run();
+    }
+
+    public static void waitFor(long timeout, final PollingCheckCondition condition) {
+        new PollingCheck(timeout) {
+            @Override
+            protected boolean check() {
+                return condition.canProceed();
+            }
+        }.run();
+    }
+}
\ No newline at end of file
diff --git a/core-ui/tests/java/android/support/v4/widget/SwipeRefreshLayoutTest.java b/core-ui/tests/java/android/support/v4/widget/SwipeRefreshLayoutTest.java
index 3efd652..3f9ed9c 100644
--- a/core-ui/tests/java/android/support/v4/widget/SwipeRefreshLayoutTest.java
+++ b/core-ui/tests/java/android/support/v4/widget/SwipeRefreshLayoutTest.java
@@ -24,20 +24,29 @@
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertTrue;
+import static org.mockito.Mockito.*;
 
+import android.support.test.espresso.action.ViewActions;
 import android.support.coreui.test.R;
 import android.support.v4.BaseInstrumentationTestCase;
+import android.support.v4.testutils.PollingCheck;
 import android.test.suitebuilder.annotation.MediumTest;
 import android.test.suitebuilder.annotation.SmallTest;
+import android.view.View;
 
 import org.junit.Before;
 import org.junit.Test;
 
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.TimeUnit;
+
 /**
  * Tests SwipeRefreshLayout widget.
  */
 public class SwipeRefreshLayoutTest
         extends BaseInstrumentationTestCase<SwipeRefreshLayoutActivity> {
+    private static final long TIMEOUT = 1000;
+    private static final int INVALID_SIZE = 1000;
 
     private SwipeRefreshLayout mSwipeRefresh;
 
@@ -54,6 +63,10 @@
     @Test
     @MediumTest
     public void testStartAndStopRefreshing() throws Throwable {
+        SwipeRefreshLayout.OnRefreshListener mockListener =
+                mock(SwipeRefreshLayout.OnRefreshListener.class);
+        mSwipeRefresh.setOnRefreshListener(mockListener);
+
         assertFalse(mSwipeRefresh.isRefreshing());
         for (int i = 0; i < 5; i++) {
             onView(withId(R.id.swipe_refresh)).perform(setRefreshing());
@@ -67,14 +80,35 @@
                     mSwipeRefresh.setRefreshing(false);
                 }
             });
-            long waitTime = 1000;
-            while (mSwipeRefresh.isRefreshing()) {
-                Thread.sleep(20);
-                waitTime -= 20;
-                assertTrue("Timed out while waiting for SwipeRefreshLayout to stop refreshing",
-                        waitTime > 0);
-            }
+
+            new PollingCheck(TIMEOUT) {
+                @Override
+                protected boolean check() {
+                    return mSwipeRefresh.isRefreshing();
+                }
+            }.run();
         }
+        verify(mockListener, times(0)).onRefresh();
+    }
+
+    @Test
+    @MediumTest
+    public void testSwipeDownToRefresh() throws Throwable {
+        assertFalse(mSwipeRefresh.isRefreshing());
+
+        final CountDownLatch latch = new CountDownLatch(1);
+        SwipeRefreshLayout.OnRefreshListener listener = new SwipeRefreshLayout.OnRefreshListener() {
+            @Override
+            public void onRefresh() {
+                latch.countDown();
+                assertTrue(mSwipeRefresh.isRefreshing());
+                mSwipeRefresh.setRefreshing(false);
+            }
+        };
+        mSwipeRefresh.setOnRefreshListener(listener);
+        onView(withId(R.id.content)).perform(ViewActions.swipeDown());
+        assertTrue("SwipeRefreshLayout never started refreshing",
+                latch.await(500, TimeUnit.MILLISECONDS));
     }
 
     @Test
@@ -90,5 +124,25 @@
         assertEquals((int) (SwipeRefreshLayout.CIRCLE_DIAMETER * density),
                 mSwipeRefresh.getProgressCircleDiameter());
         onView(withId(R.id.swipe_refresh)).perform(setSize(SwipeRefreshLayout.DEFAULT));
+        onView(withId(R.id.swipe_refresh)).perform(setSize(INVALID_SIZE));
+        assertEquals((int) (SwipeRefreshLayout.CIRCLE_DIAMETER * density),
+                mSwipeRefresh.getProgressCircleDiameter());
+    }
+
+    @Test
+    @SmallTest
+    public void testSetOnChildScrollUpCallback() throws Throwable {
+        SwipeRefreshLayout.OnChildScrollUpCallback mockCallback =
+                mock(SwipeRefreshLayout.OnChildScrollUpCallback.class);
+        when(mockCallback.canChildScrollUp(eq(mSwipeRefresh), any(View.class)))
+                .thenReturn(true)
+                .thenReturn(true)
+                .thenReturn(false)
+                .thenReturn(false);
+        mSwipeRefresh.setOnChildScrollUpCallback(mockCallback);
+        assertTrue(mSwipeRefresh.canChildScrollUp());
+        assertTrue(mSwipeRefresh.canChildScrollUp());
+        assertFalse(mSwipeRefresh.canChildScrollUp());
+        assertFalse(mSwipeRefresh.canChildScrollUp());
     }
 }