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Package: MasterDetailSelectionProvider_Test
MasterDetailSelectionProvider_Test
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| MasterDetailSelectionProvider_Test() |
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| changeDetail() |
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| changedTo(Object) |
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| getSelection_detail() |
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| getSelection_detail2() |
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| getSelection_master() |
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| isEmpty() |
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| postSelectionChanged() |
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| selected(Object) |
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| selectionChanged() |
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| selectionChanged(ISelectionChangedListener) |
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| setSelection_detail() |
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| setSelection_master() |
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| setup() |
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Coverage
1: /*******************************************************************************
2: * Copyright (c) 2019 Christian W. Damus and others.
3: *
4: * All rights reserved. This program and the accompanying materials
5: * are made available under the terms of the Eclipse Public License 2.0
6: * which accompanies this distribution, and is available at
7: * https://www.eclipse.org/legal/epl-2.0/
8: *
9: * SPDX-License-Identifier: EPL-2.0
10: *
11: * Contributors:
12: * Christian W. Damus - initial API and implementation
13: ******************************************************************************/
14: package org.eclipse.emf.ecp.ui.view.spi.swt.selection.test;
15:
16: import static org.hamcrest.CoreMatchers.is;
17: import static org.hamcrest.MatcherAssert.assertThat;
18: import static org.junit.Assume.assumeThat;
19: import static org.mockito.Matchers.argThat;
20: import static org.mockito.Mockito.verify;
21: import static org.mockito.Mockito.verifyNoMoreInteractions;
22:
23: import java.util.List;
24: import java.util.function.Supplier;
25: import java.util.stream.Collectors;
26: import java.util.stream.Stream;
27:
28: import org.eclipse.emf.ecp.view.spi.swt.selection.MasterDetailSelectionProvider;
29: import org.eclipse.jface.viewers.ISelection;
30: import org.eclipse.jface.viewers.ISelectionChangedListener;
31: import org.eclipse.jface.viewers.IStructuredSelection;
32: import org.eclipse.jface.viewers.SelectionChangedEvent;
33: import org.eclipse.jface.viewers.StructuredSelection;
34: import org.hamcrest.CustomTypeSafeMatcher;
35: import org.hamcrest.FeatureMatcher;
36: import org.hamcrest.Matcher;
37: import org.junit.Before;
38: import org.junit.Test;
39: import org.junit.runner.RunWith;
40: import org.mockito.Mock;
41: import org.mockito.runners.MockitoJUnitRunner;
42:
43: /**
44: * Test cases for the {@link MasterDetailSelectionProvider} class.
45: */
46: @RunWith(MockitoJUnitRunner.class)
47: public class MasterDetailSelectionProvider_Test {
48:
49: private final SimplePostSelectionProvider master = new SimplePostSelectionProvider();
50: private final DetailToggle detail = new DetailToggle();
51:
52: private final MasterDetailSelectionProvider fixture = new MasterDetailSelectionProvider(master);
53:
54: @Mock
55: private ISelectionChangedListener listener;
56:
57: @Mock
58: private ISelectionChangedListener postListener;
59:
60: /**
61: * Initializes me.
62: */
63: public MasterDetailSelectionProvider_Test() {
64: super();
65: }
66:
67: @Test
68: public void getSelection_master() {
69: master.select("a");
70: assertThat(fixture.getSelection(), selected("a"));
71: }
72:
73: @Test
74: public void getSelection_detail() {
75: master.select("a");
76: detail.get().select("b");
77: fixture.setDetailSelectionProvider(detail.get());
78:
79: assertThat(fixture.getSelection(), selected("b"));
80:
81: fixture.setDetailSelectionProvider(null);
82: assertThat(fixture.getSelection(), selected("a"));
83: }
84:
85: @Test
86: public void getSelection_detail2() {
87: fixture.setDetailSelectionProvider(detail.get());
88:
89: detail.get().select("b");
90: master.select("a");
91:
92: assertThat(fixture.getSelection(), selected("b"));
93:
94: fixture.setDetailSelectionProvider(null);
95: assertThat(fixture.getSelection(), selected("a"));
96: }
97:
98: @Test
99: public void setSelection_master() {
100: fixture.setSelection(new StructuredSelection("a"));
101:
102: assertThat(master.getSelection(), selected("a"));
103: }
104:
105: @Test
106: public void setSelection_detail() {
107: fixture.setDetailSelectionProvider(detail.get());
108: fixture.setSelection(new StructuredSelection("b"));
109:
110: assertThat(master.getSelection(), isEmpty());
111: assertThat(detail.get().getSelection(), selected("b"));
112: }
113:
114: @Test
115: public void changeDetail() {
116: master.select("a");
117: detail.get().select("b");
118: detail.cycle().select("c");
119: detail.cycle().select("d");
120:
121: assumeThat(fixture.getSelection(), selected("a"));
122:
123: fixture.setDetailSelectionProvider(detail.reset());
124: assumeThat(fixture.getSelection(), selected("b"));
125:
126: fixture.setDetailSelectionProvider(detail.cycle());
127: assertThat(fixture.getSelection(), selected("c"));
128:
129: fixture.setDetailSelectionProvider(detail.cycle());
130: assertThat(fixture.getSelection(), selected("d"));
131:
132: fixture.setDetailSelectionProvider(detail.cycle());
133: assertThat(fixture.getSelection(), isEmpty());
134:
135: fixture.setDetailSelectionProvider(null);
136: assertThat(fixture.getSelection(), selected("a"));
137: }
138:
139: @Test
140: public void selectionChanged() {
141: selectionChanged(listener);
142: }
143:
144: void selectionChanged(ISelectionChangedListener listener) {
145: master.select("a");
146: verify(listener).selectionChanged(argThat(changedTo("a")));
147:
148: // Focused on the master
149: detail.get().select("b");
150: verifyNoMoreInteractions(listener);
151:
152: // Change to the detail
153: fixture.setDetailSelectionProvider(detail.get());
154: verify(listener).selectionChanged(argThat(changedTo("b")));
155:
156: // Update the detail
157: detail.get().select("c");
158: verify(listener).selectionChanged(argThat(changedTo("c")));
159:
160: // Change a different detail
161: detail.cycle().select("d");
162: verifyNoMoreInteractions(listener);
163:
164: // Change to that detail
165: fixture.setDetailSelectionProvider(detail.get());
166: verify(listener).selectionChanged(argThat(changedTo("d")));
167:
168: // Idempotent
169: fixture.setDetailSelectionProvider(detail.get());
170: verifyNoMoreInteractions(listener);
171:
172: // Focused on the detail
173: master.select("z");
174: verifyNoMoreInteractions(listener);
175:
176: // Change back to the master
177: fixture.setDetailSelectionProvider(null);
178: verify(listener).selectionChanged(argThat(changedTo("z")));
179: }
180:
181: @Test
182: public void postSelectionChanged() {
183: selectionChanged(postListener);
184: }
185:
186: //
187: // Test framework
188: //
189:
190: @Before
191: public void setup() {
192: assumeThat(fixture.getSelection(), isEmpty());
193:
194: fixture.addSelectionChangedListener(listener);
195: fixture.addPostSelectionChangedListener(postListener);
196: }
197:
198: static Matcher<ISelection> isEmpty() {
199: return new CustomTypeSafeMatcher<ISelection>("empty") {
200: @Override
201: protected boolean matchesSafely(ISelection item) {
202: return item.isEmpty();
203: }
204: };
205: }
206:
207: static Matcher<ISelection> selected(Object selection) {
208: return new CustomTypeSafeMatcher<ISelection>("selected " + selection) {
209: @Override
210: protected boolean matchesSafely(ISelection item) {
211: return item instanceof IStructuredSelection
212: && ((IStructuredSelection) item).toList().contains(selection);
213: }
214: };
215: }
216:
217: Matcher<SelectionChangedEvent> changedTo(Object selection) {
218: return new FeatureMatcher<SelectionChangedEvent, ISelection>(selected(selection), "selection", "selection") {
219: @Override
220: protected ISelection featureValueOf(SelectionChangedEvent actual) {
221: assertThat("Wrong event source", actual.getSelectionProvider(), is(fixture));
222: return actual.getSelection();
223: }
224: };
225: }
226:
227: //
228: // Nested types
229: //
230:
231: private final class DetailToggle implements Supplier<SimplePostSelectionProvider> {
232: private final List<SimplePostSelectionProvider> details;
233:
234: private int index;
235:
236: DetailToggle() {
237: super();
238:
239: details = Stream.generate(SimplePostSelectionProvider::new)
240: .limit(10L).collect(Collectors.toList());
241: }
242:
243: SimplePostSelectionProvider cycle() {
244: return switchTo((index + 1) % details.size());
245: }
246:
247: SimplePostSelectionProvider reset() {
248: return switchTo(0);
249: }
250:
251: SimplePostSelectionProvider switchTo(int detail) {
252: index = detail;
253: return get();
254: }
255:
256: @Override
257: public SimplePostSelectionProvider get() {
258: return details.get(index);
259: }
260: }
261:
262: }