ViewFinderImplTest.java revision f69eb9ac2856f470cb79f57141f711ed3ceed99d 
1/*
2 * Copyright (C) 2014 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 com.google.android.apps.common.testing.ui.espresso.base;
18
19import static org.hamcrest.MatcherAssert.assertThat;
20import static org.hamcrest.Matchers.sameInstance;
21
22import com.google.android.apps.common.testing.ui.espresso.AmbiguousViewMatcherException;
23import com.google.android.apps.common.testing.ui.espresso.NoMatchingViewException;
24import com.google.android.apps.common.testing.ui.espresso.ViewFinder;
25
26import android.test.InstrumentationTestCase;
27import android.test.UiThreadTest;
28import android.view.View;
29import android.widget.RelativeLayout;
30import android.widget.TextView;
31
32import org.hamcrest.Matchers;
33
34import javax.inject.Provider;
35
36/** Unit tests for {@link ViewFinderImpl}. */
37public class ViewFinderImplTest extends InstrumentationTestCase {
38  private Provider<View> testViewProvider;
39  private RelativeLayout testView;
40  private View child1;
41  private View child2;
42  private View child3;
43  private View child4;
44  private View nestedChild;
45
46  @Override
47  public void setUp() throws Exception {
48    super.setUp();
49    testView = new RelativeLayout(getInstrumentation().getTargetContext());
50    child1 = new TextView(getInstrumentation().getTargetContext());
51    child1.setId(1);
52    child2 = new TextView(getInstrumentation().getTargetContext());
53    child2.setId(2);
54    child3 = new TextView(getInstrumentation().getTargetContext());
55    child3.setId(3);
56    child4 = new TextView(getInstrumentation().getTargetContext());
57    child4.setId(4);
58    nestedChild = new TextView(getInstrumentation().getTargetContext());
59    nestedChild.setId(5);
60    RelativeLayout nestingLayout = new RelativeLayout(getInstrumentation().getTargetContext());
61    nestingLayout.addView(nestedChild);
62    testView.addView(child1);
63    testView.addView(child2);
64    testView.addView(nestingLayout);
65    testView.addView(child3);
66    testView.addView(child4);
67    testViewProvider = new Provider<View>() {
68      @Override
69      public View get() {
70        return testView;
71      }
72
73      @Override
74      public String toString() {
75        return "of(" + testView + ")";
76      }
77    };
78  }
79
80  @UiThreadTest
81  public void testGetView_present() {
82    ViewFinder finder = new ViewFinderImpl(sameInstance(nestedChild), testViewProvider);
83    assertThat(finder.getView(), sameInstance(nestedChild));
84  }
85
86  @UiThreadTest
87  public void testGetView_missing() {
88    ViewFinder finder = new ViewFinderImpl(Matchers.<View>nullValue(), testViewProvider);
89    try {
90      finder.getView();
91      fail("No children should pass that matcher!");
92    } catch (NoMatchingViewException expected) {}
93  }
94
95  @UiThreadTest
96  public void testGetView_multiple() {
97    ViewFinder finder = new ViewFinderImpl(Matchers.<View>notNullValue(), testViewProvider);
98    try {
99      finder.getView();
100      fail("All nodes hit that matcher!");
101    } catch (AmbiguousViewMatcherException expected) {}
102  }
103
104  public void testFind_offUiThread() {
105    ViewFinder finder = new ViewFinderImpl(sameInstance(nestedChild), testViewProvider);
106    try {
107      finder.getView();
108      fail("not on main thread, should die.");
109    } catch (IllegalStateException expected) {}
110  }
111
112}
113