1 files changed, 115 insertions, 0 deletions
diff --git a/tests/src/com/android/launcher3/touch/SwipeDetectorTest.java b/tests/src/com/android/launcher3/touch/SwipeDetectorTest.java
new file mode 100644
index 000000000..ff83131d1
--- /dev/null
+++ b/tests/src/com/android/launcher3/touch/SwipeDetectorTest.java
@@ -0,0 +1,115 @@
+/*
+ * Copyright (C) 2017 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 com.android.launcher3.touch;
+
+import android.support.test.InstrumentationRegistry;
+import android.support.test.filters.SmallTest;
+import android.support.test.runner.AndroidJUnit4;
+import android.util.Log;
+import android.view.MotionEvent;
+import android.view.ViewConfiguration;
+
+import com.android.launcher3.testcomponent.TouchEventGenerator;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+import static org.mockito.Matchers.anyBoolean;
+import static org.mockito.Matchers.anyFloat;
+import static org.mockito.Mockito.never;
+import static org.mockito.Mockito.verify;
+
+@SmallTest
+@RunWith(AndroidJUnit4.class)
+public class SwipeDetectorTest {
+
+    private static final String TAG = SwipeDetectorTest.class.getSimpleName();
+    public static void L(String s, Object... parts) {
+        Log.d(TAG, (parts.length == 0) ? s : String.format(s, parts));
+    }
+
+    private TouchEventGenerator mGenerator;
+    private SwipeDetector mDetector;
+    private int mTouchSlop;
+
+    @Mock
+    private SwipeDetector.Listener mMockListener;
+
+    @Before
+    public void setup() {
+        MockitoAnnotations.initMocks(this);
+        mGenerator = new TouchEventGenerator(new TouchEventGenerator.Listener() {
+            @Override
+            public void onTouchEvent(MotionEvent event) {
+                mDetector.onTouchEvent(event);
+            }
+        });
+
+        mDetector = new SwipeDetector(mTouchSlop, mMockListener, SwipeDetector.VERTICAL);
+        mDetector.setDetectableScrollConditions(SwipeDetector.DIRECTION_BOTH, false);
+        mTouchSlop = ViewConfiguration.get(InstrumentationRegistry.getTargetContext())
+                .getScaledTouchSlop();
+        L("mTouchSlop=", mTouchSlop);
+    }
+
+    @Test
+    public void testDragStart_vertical() throws Exception {
+        mGenerator.put(0, 100, 100);
+        mGenerator.move(0, 100, 100 + mTouchSlop);
+        // TODO: actually calculate the following parameters and do exact value checks.
+        verify(mMockListener).onDragStart(anyBoolean());
+    }
+
+    @Test
+    public void testDragStart_failed() throws Exception {
+        mGenerator.put(0, 100, 100);
+        mGenerator.move(0, 100 + mTouchSlop, 100);
+        // TODO: actually calculate the following parameters and do exact value checks.
+        verify(mMockListener, never()).onDragStart(anyBoolean());
+    }
+
+    @Test
+    public void testDragStart_horizontal() throws Exception {
+        mDetector = new SwipeDetector(mTouchSlop, mMockListener, SwipeDetector.HORIZONTAL);
+        mDetector.setDetectableScrollConditions(SwipeDetector.DIRECTION_BOTH, false);
+
+        mGenerator.put(0, 100, 100);
+        mGenerator.move(0, 100 + mTouchSlop, 100);
+        // TODO: actually calculate the following parameters and do exact value checks.
+        verify(mMockListener).onDragStart(anyBoolean());
+    }
+
+    @Test
+    public void testDrag() throws Exception {
+        mGenerator.put(0, 100, 100);
+        mGenerator.move(0, 100, 100 + mTouchSlop);
+        // TODO: actually calculate the following parameters and do exact value checks.
+        verify(mMockListener).onDrag(anyFloat(), anyFloat());
+    }
+
+    @Test
+    public void testDragEnd() throws Exception {
+        mGenerator.put(0, 100, 100);
+        mGenerator.move(0, 100, 100 + mTouchSlop);
+        mGenerator.move(0, 100, 100 + mTouchSlop * 2);
+        mGenerator.lift(0);
+        // TODO: actually calculate the following parameters and do exact value checks.
+        verify(mMockListener).onDragEnd(anyFloat(), anyBoolean());
+    }
+}