ViewGroupTest.java revision 7f306c7c98e32f85115ce57780a6752477b8faad 
1package com.xtremelabs.robolectric.shadows;
2
3import static com.xtremelabs.robolectric.Robolectric.shadowOf;
4import static org.hamcrest.CoreMatchers.equalTo;
5import static org.hamcrest.CoreMatchers.sameInstance;
6import static org.hamcrest.MatcherAssert.assertThat;
7import static org.hamcrest.core.IsNull.nullValue;
8import static org.hamcrest.core.IsNull.notNullValue;
9import static org.junit.Assert.assertEquals;
10import static org.junit.Assert.assertFalse;
11import static org.junit.Assert.assertTrue;
12
13import java.io.ByteArrayOutputStream;
14import java.io.PrintStream;
15
16import org.junit.After;
17import org.junit.Before;
18import org.junit.Test;
19import org.junit.runner.RunWith;
20
21import android.app.Application;
22import android.view.View;
23import android.view.ViewGroup;
24import android.view.animation.Animation;
25import android.view.animation.Animation.AnimationListener;
26import android.widget.FrameLayout;
27
28import com.xtremelabs.robolectric.R;
29import com.xtremelabs.robolectric.WithTestDefaultsRunner;
30import com.xtremelabs.robolectric.res.ResourceLoader;
31
32@RunWith(WithTestDefaultsRunner.class)
33public class ViewGroupTest {
34    private String defaultLineSeparator;
35    private ViewGroup root;
36    private View child1;
37    private View child2;
38    private ViewGroup child3;
39    private View child3a;
40    private View child3b;
41
42    @Before public void setUp() throws Exception {
43        Application context = new Application();
44        ShadowApplication.bind(context, new ResourceLoader(10, R.class, null, null));
45
46        root = new FrameLayout(context);
47
48        child1 = new View(context);
49        child2 = new View(context);
50        child3 = new FrameLayout(context);
51        child3a = new View(context);
52        child3b = new View(context);
53
54        root.addView(child1);
55        root.addView(child2);
56        root.addView(child3);
57
58        child3.addView(child3a);
59        child3.addView(child3b);
60
61        defaultLineSeparator = System.getProperty("line.separator");
62        System.setProperty("line.separator", "\n");
63    }
64
65    @After
66    public void tearDown() throws Exception {
67        System.setProperty("line.separator", defaultLineSeparator);
68    }
69
70    @Test
71    public void testLayoutAnimationListener() {
72    	assertThat( root.getLayoutAnimationListener(), nullValue() );
73    	root.setLayoutAnimationListener( new AnimationListener() {
74    		 @Override
75    		 public void onAnimationEnd( Animation a ) { }
76    		 @Override
77    		 public void onAnimationRepeat(Animation a ) { }
78    		 @Override
79    		 public void onAnimationStart(Animation a ) { }
80    	 });
81
82    	assertThat( root.getLayoutAnimationListener(), notNullValue() );
83    }
84
85    @Test
86    public void testRemoveChildAt() throws Exception {
87        root.removeViewAt(1);
88
89        assertThat(root.getChildCount(), equalTo(2));
90        assertThat(root.getChildAt(0), sameInstance(child1));
91        assertThat(root.getChildAt(1), sameInstance((View) child3));
92
93        assertThat(child2.getParent(), nullValue());
94    }
95
96    @Test
97    public void testAddViewAt() throws Exception {
98        root.removeAllViews();
99        root.addView(child1);
100        root.addView(child2);
101        root.addView(child3, 1);
102        assertThat(root.getChildAt(0), sameInstance(child1));
103        assertThat(root.getChildAt(1), sameInstance((View) child3));
104        assertThat(root.getChildAt(2), sameInstance(child2));
105    }
106
107    @Test
108    public void hasFocus_shouldReturnTrueIfAnyChildHasFocus() throws Exception {
109        assertFalse(root.hasFocus());
110
111        child1.requestFocus();
112        assertTrue(root.hasFocus());
113
114        child1.clearFocus();
115        assertFalse(root.hasFocus());
116
117        child3b.requestFocus();
118        assertTrue(root.hasFocus());
119
120        child3b.clearFocus();
121        assertFalse(root.hasFocus());
122
123        root.requestFocus();
124        assertTrue(root.hasFocus());
125    }
126
127    @Test
128    public void clearFocus_shouldRecursivelyClearTheFocusOfAllChildren() throws Exception {
129        child3a.requestFocus();
130
131        root.clearFocus();
132
133        assertFalse(child3a.hasFocus());
134        assertFalse(child3.hasFocus());
135        assertFalse(root.hasFocus());
136
137        root.requestFocus();
138        root.clearFocus();
139        assertFalse(root.hasFocus());
140    }
141
142    @Test
143    public void dump_shouldDumpStructure() throws Exception {
144        child3.setId(R.id.snippet_text);
145
146        ByteArrayOutputStream out = new ByteArrayOutputStream();
147        shadowOf(root).dump(new PrintStream(out), 0);
148        assertEquals("<FrameLayout>\n" +
149                "  <View/>\n" +
150                "  <View/>\n" +
151                "  <FrameLayout id=\"id/snippet_text\">\n" +
152                "    <View/>\n" +
153                "    <View/>\n" +
154                "  </FrameLayout>\n" +
155                "</FrameLayout>\n", out.toString());
156    }
157}
158