DataBindingUtilTest.java revision 4d4979490e1fa374c0d7f3599fed0a9e83a579d0 
1/*
2 * Copyright (C) 2015 The Android Open Source Project
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *      http://www.apache.org/licenses/LICENSE-2.0
7 * Unless required by applicable law or agreed to in writing, software
8 * distributed under the License is distributed on an "AS IS" BASIS,
9 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
10 * See the License for the specific language governing permissions and
11 * limitations under the License.
12 */
13
14package android.databinding.testapp;
15
16import android.databinding.DataBindingUtil;
17import android.databinding.testapp.databinding.BasicBindingBinding;
18import android.databinding.testapp.databinding.CenteredContentBinding;
19import android.databinding.testapp.databinding.MergeLayoutBinding;
20import android.test.ActivityInstrumentationTestCase2;
21import android.test.UiThreadTest;
22import android.view.InflateException;
23import android.view.View;
24import android.view.ViewGroup;
25import android.view.ViewGroup.LayoutParams;
26
27public class DataBindingUtilTest
28        extends ActivityInstrumentationTestCase2<TestActivity> {
29
30    public DataBindingUtilTest() {
31        super(TestActivity.class);
32    }
33
34    @UiThreadTest
35    public void testFindBinding() throws Throwable {
36        BasicBindingBinding binding = BasicBindingBinding.inflate(getActivity().getLayoutInflater());
37        assertEquals(binding, DataBindingUtil.findBinding(binding.textView));
38        assertEquals(binding, DataBindingUtil.findBinding(binding.getRoot()));
39        ViewGroup root = (ViewGroup) binding.getRoot();
40        getActivity().getLayoutInflater().inflate(R.layout.basic_binding, root, true);
41        View inflated = root.getChildAt(1);
42        assertNull(DataBindingUtil.findBinding(inflated));
43        BasicBindingBinding innerBinding = DataBindingUtil.bind(inflated);
44        assertEquals(innerBinding, DataBindingUtil.findBinding(inflated));
45        assertEquals(innerBinding, DataBindingUtil.findBinding(innerBinding.textView));
46    }
47
48    @UiThreadTest
49    public void testGetBinding() throws Throwable {
50        BasicBindingBinding binding = BasicBindingBinding.inflate(getActivity().getLayoutInflater());
51        assertNull(DataBindingUtil.getBinding(binding.textView));
52        assertEquals(binding, DataBindingUtil.getBinding(binding.getRoot()));
53    }
54
55    @UiThreadTest
56    public void testSetContentView() throws Throwable {
57        CenteredContentBinding binding = DataBindingUtil.setContentView(getActivity(),
58                R.layout.centered_content);
59        assertNotNull(binding);
60        LayoutParams layoutParams = binding.getRoot().getLayoutParams();
61        assertEquals(LayoutParams.WRAP_CONTENT, layoutParams.width);
62        assertEquals(LayoutParams.WRAP_CONTENT, layoutParams.height);
63    }
64
65    @UiThreadTest
66    public void testBind() throws Throwable {
67        getActivity().setContentView(R.layout.basic_binding);
68        ViewGroup content = (ViewGroup) getActivity().findViewById(android.R.id.content);
69        assertEquals(1, content.getChildCount());
70        View view = content.getChildAt(0);
71        BasicBindingBinding binding = DataBindingUtil.bind(view);
72        assertNotNull(binding);
73        assertEquals(binding, DataBindingUtil.<BasicBindingBinding>bind(view));
74    }
75
76    @UiThreadTest
77    public void testInflate() throws Throwable {
78        getActivity().getWindow().getDecorView(); // force a content to exist.
79        ViewGroup content = (ViewGroup) getActivity().findViewById(android.R.id.content);
80        BasicBindingBinding binding = DataBindingUtil.inflate(getActivity().getLayoutInflater(),
81                R.layout.basic_binding, content, false);
82        assertNotNull(binding);
83        assertNotNull(binding.getRoot().getLayoutParams());
84        binding = DataBindingUtil.inflate(getActivity().getLayoutInflater(),
85                R.layout.basic_binding, null, false);
86        assertNotNull(binding);
87        assertNull(binding.getRoot().getLayoutParams());
88
89        assertNull(DataBindingUtil.inflate(getActivity().getLayoutInflater(),
90                R.layout.plain_layout, null, false));
91        MergeLayoutBinding mergeBinding = DataBindingUtil.inflate(getActivity().getLayoutInflater(),
92                R.layout.merge_layout, content, true);
93        assertNotNull(mergeBinding);
94        assertNotNull(mergeBinding.innerTextView1);
95        assertNotNull(mergeBinding.innerTextView2);
96
97        try {
98            DataBindingUtil.inflate(getActivity().getLayoutInflater(),
99                    R.layout.merge_layout, content, false);
100            fail("Inflating a merge layout without a root should fail");
101        } catch (InflateException e) {
102            // You can't inflate a merge layout without a root.
103        }
104    }
105}
106