1/*
2 * Copyright (C) 2015 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package android.support.v7.widget.test;
18
19import static org.junit.Assert.assertEquals;
20import static org.junit.Assert.assertFalse;
21import static org.junit.Assert.assertNotNull;
22import static org.junit.Assert.assertTrue;
23
24import android.app.Activity;
25import android.app.Instrumentation;
26import android.os.Build;
27import android.support.test.InstrumentationRegistry;
28import android.support.test.filters.SmallTest;
29import android.support.test.rule.ActivityTestRule;
30import android.support.test.runner.AndroidJUnit4;
31import android.support.v7.recyclerview.test.CustomLayoutManager;
32import android.support.v7.recyclerview.test.R;
33import android.support.v7.widget.GridLayoutManager;
34import android.support.v7.widget.LinearLayoutManager;
35import android.support.v7.widget.RecyclerView;
36import android.support.v7.widget.StaggeredGridLayoutManager;
37import android.view.ViewGroup;
38import android.widget.LinearLayout;
39
40import org.junit.Rule;
41import org.junit.Test;
42import org.junit.runner.RunWith;
43
44@SmallTest
45@RunWith(AndroidJUnit4.class)
46public class RecyclerViewTest {
47
48    @Rule
49    public ActivityTestRule<RecyclerViewTestActivity> mActivityRule =
50            new ActivityTestRule<>(RecyclerViewTestActivity.class);
51
52    private void setContentView(final int layoutId) throws Throwable {
53        final Activity activity = mActivityRule.getActivity();
54        mActivityRule.runOnUiThread(new Runnable() {
55            @Override
56            public void run() {
57                activity.setContentView(layoutId);
58            }
59        });
60    }
61
62    @Test
63    public void savedStateAccess() throws ClassNotFoundException {
64        // this class should be accessible outside RecyclerView package
65        assertNotNull(RecyclerView.SavedState.class);
66        assertNotNull(LinearLayoutManager.SavedState.class);
67        assertNotNull(GridLayoutManager.SavedState.class);
68        assertNotNull(StaggeredGridLayoutManager.SavedState.class);
69    }
70
71    @Test
72    public void inflation() throws Throwable {
73        setContentView(R.layout.inflation_test);
74        getInstrumentation().waitForIdleSync();
75        RecyclerView view;
76        view = (RecyclerView) getActivity().findViewById(R.id.clipToPaddingUndefined);
77        assertTrue(view.getLayoutManager().getClipToPadding());
78        view = (RecyclerView) getActivity().findViewById(R.id.clipToPaddingYes);
79        assertTrue(view.getLayoutManager().getClipToPadding());
80        view = (RecyclerView) getActivity().findViewById(R.id.clipToPaddingNo);
81        assertFalse(view.getLayoutManager().getClipToPadding());
82
83        view = (RecyclerView) getActivity().findViewById(R.id.recyclerView);
84        RecyclerView.LayoutManager layoutManager = view.getLayoutManager();
85        assertNotNull("LayoutManager not created.", layoutManager);
86        assertEquals("Incorrect LayoutManager created",
87                layoutManager.getClass().getName(), GridLayoutManager.class.getName());
88        GridLayoutManager gridLayoutManager = ((GridLayoutManager) layoutManager);
89        assertEquals("Incorrect span count.", 3, gridLayoutManager.getSpanCount());
90        assertEquals("Expected horizontal orientation.",
91                LinearLayout.HORIZONTAL, gridLayoutManager.getOrientation());
92        assertTrue("Expected reversed layout", gridLayoutManager.getReverseLayout());
93
94        view = (RecyclerView) getActivity().findViewById(R.id.recyclerView2);
95        layoutManager = view.getLayoutManager();
96        assertNotNull("LayoutManager not created.", layoutManager);
97        assertEquals("Incorrect LayoutManager created",
98                layoutManager.getClass().getName(),
99                CustomLayoutManager.class.getName());
100        CustomLayoutManager customLayoutManager =
101                (CustomLayoutManager) layoutManager;
102        assertEquals("Expected vertical orientation.",
103                LinearLayout.VERTICAL, customLayoutManager.getOrientation());
104        assertTrue("Expected items to be stacked from end", customLayoutManager.getStackFromEnd());
105
106        view = (RecyclerView) getActivity().findViewById(R.id.recyclerView3);
107        layoutManager = view.getLayoutManager();
108        assertNotNull("LayoutManager not created.", layoutManager);
109        assertEquals("Incorrect LayoutManager created",
110                layoutManager.getClass().getName(),
111                CustomLayoutManager.LayoutManager.class.getName());
112
113        view = (RecyclerView) getActivity().findViewById(R.id.recyclerView4);
114        layoutManager = view.getLayoutManager();
115        assertNotNull("LayoutManager not created.", layoutManager);
116        assertEquals("Incorrect LayoutManager created",
117                "android.support.v7.recyclerview.test.PrivateLayoutManager",
118                layoutManager.getClass().getName());
119
120        view = (RecyclerView) getActivity().findViewById(R.id.recyclerView5);
121        assertTrue("Incorrect default nested scrolling value", view.isNestedScrollingEnabled());
122
123        if (Build.VERSION.SDK_INT >= 21) {
124            view = (RecyclerView) getActivity().findViewById(R.id.recyclerView6);
125            assertFalse("Incorrect explicit nested scrolling value",
126                    view.isNestedScrollingEnabled());
127        }
128
129        view = (RecyclerView) getActivity().findViewById(R.id.focusability_undefined);
130        assertEquals(ViewGroup.FOCUS_AFTER_DESCENDANTS, view.getDescendantFocusability());
131
132        view = (RecyclerView) getActivity().findViewById(R.id.focusability_after);
133        assertEquals(ViewGroup.FOCUS_AFTER_DESCENDANTS, view.getDescendantFocusability());
134
135        view = (RecyclerView) getActivity().findViewById(R.id.focusability_before);
136        assertEquals(ViewGroup.FOCUS_BEFORE_DESCENDANTS, view.getDescendantFocusability());
137
138        view = (RecyclerView) getActivity().findViewById(R.id.focusability_block);
139        assertEquals(ViewGroup.FOCUS_BLOCK_DESCENDANTS, view.getDescendantFocusability());
140    }
141
142    private Activity getActivity() {
143        return mActivityRule.getActivity();
144    }
145
146    private Instrumentation getInstrumentation() {
147        return InstrumentationRegistry.getInstrumentation();
148    }
149}
150