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Package: RankingHelper_Test
RankingHelper_Test
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| RankingHelper_Test() |
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| setup() |
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| testRankingHighestRank() |
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| testRankingNoWinner() |
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| testRankingWithDuplicate() |
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Coverage
1: /*******************************************************************************
2: * Copyright (c) 2011-2017 EclipseSource Muenchen GmbH 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: * Mat Hansen - initial API and implementation
13: ******************************************************************************/
14: package org.eclipse.emfforms.common.tests;
15:
16: import static org.junit.Assert.assertEquals;
17: import static org.junit.Assert.assertNull;
18: import static org.junit.Assert.assertTrue;
19:
20: import java.util.ArrayList;
21: import java.util.Arrays;
22: import java.util.Collection;
23: import java.util.List;
24:
25: import org.eclipse.emfforms.common.RankingHelper;
26: import org.eclipse.emfforms.common.RankingHelper.RankTester;
27: import org.junit.Before;
28: import org.junit.Test;
29:
30: /**
31: * @author Mat Hansen <mhansen@eclipsesource.com>
32: *
33: */
34: public class RankingHelper_Test {
35:
36: private static class DummyRankedElement {
37:
38: private final double rank;
39:
40: DummyRankedElement(double rank) {
41: super();
42: this.rank = rank;
43: }
44:
45: @Override
46: @SuppressWarnings("nls")
47: public String toString() {
48: return super.toString() + "{rank " + rank + "}";
49: }
50:
51: }
52:
53: private static final DummyRankedElement DUMMY_RANK_1 = new DummyRankedElement(1d);
54: private static final DummyRankedElement DUMMY_RANK_2 = new DummyRankedElement(2d);
55: private static final DummyRankedElement DUMMY_RANK_2_REDUNDANT = new DummyRankedElement(2d);
56: private static final DummyRankedElement DUMMY_RANK_3 = new DummyRankedElement(3d);
57:
58: private RankingHelper<DummyRankedElement> rankingHelper;
59:
60: @Before
61: public void setup() {
62: rankingHelper = new RankingHelper<RankingHelper_Test.DummyRankedElement>(DummyRankedElement.class, -1d);
63: }
64:
65: @Test
66: public void testRankingNoWinner() {
67:
68: // empty element list should lead to null winner
69: final List<DummyRankedElement> emptyElements = Arrays.asList(new DummyRankedElement[] {});
70:
71: final DummyRankedElement winner = rankingHelper.getHighestRankingElement(emptyElements,
72: new RankTester<RankingHelper_Test.DummyRankedElement>() {
73:
74: @Override
75: public double getRank(DummyRankedElement element) {
76: return element.rank;
77: }
78: });
79:
80: assertNull(winner);
81:
82: }
83:
84: @Test
85: public void testRankingWithDuplicate() {
86:
87: rankingHelper = new RankingHelper<DummyRankedElement>(DummyRankedElement.class, -1d) {
88: private boolean warningCreated;
89: private boolean warningReported;
90:
91: @Override
92: public DummyRankedElement getHighestRankingElement(Collection<DummyRankedElement> elements,
93: org.eclipse.emfforms.common.RankingHelper.RankTester<DummyRankedElement> rankTester) {
94: try {
95: return super.getHighestRankingElement(elements, rankTester);
96: } finally {
97: assertTrue(warningCreated);
98: assertTrue(warningReported);
99: }
100: }
101:
102: @Override
103: protected String createWarning(List<DummyRankedElement> highestRankingElements, double rank) {
104: assertEquals(highestRankingElements.size(), 2);
105: assertEquals(DUMMY_RANK_2, highestRankingElements.get(0));
106: assertEquals(DUMMY_RANK_2_REDUNDANT, highestRankingElements.get(1));
107: assertEquals(DUMMY_RANK_2.rank, rank, 0.0d);
108: warningCreated = true;
109: return super.createWarning(highestRankingElements, rank);
110: }
111:
112: @Override
113: protected void reportClashingPriorities(String warning) {
114: warningReported = true;
115: }
116: };
117:
118: final List<DummyRankedElement> elements = Arrays.asList(
119: new DummyRankedElement[] { DUMMY_RANK_1, DUMMY_RANK_2, DUMMY_RANK_2_REDUNDANT });
120:
121: final DummyRankedElement winner = rankingHelper.getHighestRankingElement(elements,
122: new RankTester<RankingHelper_Test.DummyRankedElement>() {
123:
124: @Override
125: public double getRank(DummyRankedElement element) {
126: return element.rank;
127: }
128: });
129:
130: assertEquals(DUMMY_RANK_2, winner);
131:
132: }
133:
134: @Test
135: public void testRankingHighestRank() {
136:
137: DummyRankedElement winner = null;
138: final List<DummyRankedElement> elements = new ArrayList<RankingHelper_Test.DummyRankedElement>();
139: elements.addAll(Arrays.asList(new DummyRankedElement[] { DUMMY_RANK_1, DUMMY_RANK_2 }));
140:
141: final RankTester<DummyRankedElement> tester = new RankTester<RankingHelper_Test.DummyRankedElement>() {
142:
143: @Override
144: public double getRank(DummyRankedElement element) {
145: return element.rank;
146: }
147: };
148:
149: winner = rankingHelper.getHighestRankingElement(elements, tester);
150: assertEquals(DUMMY_RANK_2, winner);
151:
152: elements.add(DUMMY_RANK_3);
153: winner = rankingHelper.getHighestRankingElement(elements, tester);
154: assertEquals(DUMMY_RANK_3, winner);
155:
156: }
157:
158: }