ViewGroupTest.java revision 88fd0dbccc29a37545c186115f2a6b6f91302a56 
1package com.xtremelabs.robolectric.shadows;
2
3import android.app.Application;
4import android.view.View;
5import android.view.ViewGroup;
6import android.widget.FrameLayout;
7import com.xtremelabs.robolectric.R;
8import com.xtremelabs.robolectric.WithTestDefaultsRunner;
9import com.xtremelabs.robolectric.res.ResourceLoader;
10import org.junit.After;
11import org.junit.Before;
12import org.junit.Test;
13import org.junit.runner.RunWith;
14
15import java.io.ByteArrayOutputStream;
16import java.io.PrintStream;
17
18import static com.xtremelabs.robolectric.Robolectric.shadowOf;
19import static org.hamcrest.CoreMatchers.equalTo;
20import static org.hamcrest.CoreMatchers.sameInstance;
21import static org.hamcrest.MatcherAssert.assertThat;
22import static org.hamcrest.core.IsNull.nullValue;
23import static org.junit.Assert.*;
24
25@RunWith(WithTestDefaultsRunner.class)
26public class ViewGroupTest {
27    private String defaultLineSeparator;
28    private ViewGroup root;
29    private View child1;
30    private View child2;
31    private ViewGroup child3;
32    private View child3a;
33    private View child3b;
34
35    @Before public void setUp() throws Exception {
36        Application context = new Application();
37        ShadowApplication.bind(context, new ResourceLoader(10, R.class, null, null));
38
39        root = new FrameLayout(context);
40
41        child1 = new View(context);
42        child2 = new View(context);
43        child3 = new FrameLayout(context);
44        child3a = new View(context);
45        child3b = new View(context);
46
47        root.addView(child1);
48        root.addView(child2);
49        root.addView(child3);
50
51        child3.addView(child3a);
52        child3.addView(child3b);
53
54        defaultLineSeparator = System.getProperty("line.separator");
55        System.setProperty("line.separator", "\n");
56    }
57
58    @After
59    public void tearDown() throws Exception {
60        System.setProperty("line.separator", defaultLineSeparator);
61    }
62
63    @Test
64    public void testRemoveChildAt() throws Exception {
65        root.removeViewAt(1);
66
67        assertThat(root.getChildCount(), equalTo(2));
68        assertThat(root.getChildAt(0), sameInstance(child1));
69        assertThat(root.getChildAt(1), sameInstance((View) child3));
70
71        assertThat(child2.getParent(), nullValue());
72    }
73
74    @Test
75    public void testAddViewAt() throws Exception {
76        root.removeAllViews();
77        root.addView(child1);
78        root.addView(child2);
79        root.addView(child3, 1);
80        assertThat(root.getChildAt(0), sameInstance(child1));
81        assertThat(root.getChildAt(1), sameInstance((View) child3));
82        assertThat(root.getChildAt(2), sameInstance(child2));
83    }
84
85    @Test
86    public void shouldfindViewWithTag() {
87    	 root.removeAllViews();
88    	 String tag1 = "tag1";
89    	 String tag2 = "tag2";
90    	 String tag3 = "tag3";
91    	 child1.setTag(tag1);
92    	 child2.setTag(tag2);
93    	 child3.setTag(tag3);
94         root.addView(child1);
95         root.addView(child2);
96         root.addView(child3, 1);
97         assertThat(root.findViewWithTag("tag1"), sameInstance(child1));
98         assertThat(root.findViewWithTag("tag2"), sameInstance((View) child2));
99         assertThat((ViewGroup)root.findViewWithTag("tag3"), sameInstance(child3));
100    }
101
102    @Test
103    public void shouldNotfindViewWithTagReturnNull() {
104    	 root.removeAllViews();
105    	 String tag1 = "tag1";
106    	 String tag2 = "tag2";
107    	 String tag3 = "tag3";
108    	 child1.setTag(tag1);
109    	 child2.setTag(tag2);
110    	 child3.setTag(tag3);
111         root.addView(child1);
112         root.addView(child2);
113         root.addView(child3, 1);
114         assertThat(root.findViewWithTag("tag21"), equalTo(null));
115         assertThat((ViewGroup)root.findViewWithTag("tag23"), equalTo(null));
116    }
117
118    @Test
119    public void shouldfindViewWithTagFromCorrectViewGroup() {
120    	 root.removeAllViews();
121    	 String tag1 = "tag1";
122    	 String tag2 = "tag2";
123    	 String tag3 = "tag3";
124    	 child1.setTag(tag1);
125    	 child2.setTag(tag2);
126    	 child3.setTag(tag3);
127         root.addView(child1);
128         root.addView(child2);
129         root.addView(child3);
130
131         child3a.setTag(tag1);
132         child3b.setTag(tag2);
133
134         //can find views by tag from root
135         assertThat(root.findViewWithTag("tag1"), sameInstance(child1));
136         assertThat(root.findViewWithTag("tag2"), sameInstance((View) child2));
137         assertThat((ViewGroup)root.findViewWithTag("tag3"), sameInstance(child3));
138
139         //can find views by tag from child3
140         assertThat(child3.findViewWithTag("tag1"), sameInstance(child3a));
141         assertThat(child3.findViewWithTag("tag2"), sameInstance(child3b));
142    }
143
144
145    @Test
146    public void hasFocus_shouldReturnTrueIfAnyChildHasFocus() throws Exception {
147        assertFalse(root.hasFocus());
148
149        child1.requestFocus();
150        assertTrue(root.hasFocus());
151
152        child1.clearFocus();
153        assertFalse(root.hasFocus());
154
155        child3b.requestFocus();
156        assertTrue(root.hasFocus());
157
158        child3b.clearFocus();
159        assertFalse(root.hasFocus());
160
161        root.requestFocus();
162        assertTrue(root.hasFocus());
163    }
164
165    @Test
166    public void clearFocus_shouldRecursivelyClearTheFocusOfAllChildren() throws Exception {
167        child3a.requestFocus();
168
169        root.clearFocus();
170
171        assertFalse(child3a.hasFocus());
172        assertFalse(child3.hasFocus());
173        assertFalse(root.hasFocus());
174
175        root.requestFocus();
176        root.clearFocus();
177        assertFalse(root.hasFocus());
178    }
179
180    @Test
181    public void dump_shouldDumpStructure() throws Exception {
182        child3.setId(R.id.snippet_text);
183
184        ByteArrayOutputStream out = new ByteArrayOutputStream();
185        shadowOf(root).dump(new PrintStream(out), 0);
186        assertEquals("<FrameLayout>\n" +
187                "  <View/>\n" +
188                "  <View/>\n" +
189                "  <FrameLayout id=\"id/snippet_text\">\n" +
190                "    <View/>\n" +
191                "    <View/>\n" +
192                "  </FrameLayout>\n" +
193                "</FrameLayout>\n", out.toString());
194    }
195}
196