source: josm/trunk/test/unit/org/openstreetmap/josm/TestUtils.java@ 12248

Last change on this file since 12248 was 12130, checked in by Don-vip, 9 years ago

see #11924 - do not try old workaround with java 9 (pollutes console with stacktrace)
  • Property svn:eol-style set to native
File size: 10.9 KB
Line 
1// License: GPL. For details, see LICENSE file.
2package org.openstreetmap.josm;
3
4import static org.junit.Assert.assertEquals;
5import static org.junit.Assert.fail;
6
7import java.awt.Component;
8import java.awt.Container;
9import java.awt.Graphics2D;
10import java.io.File;
11import java.io.IOException;
12import java.io.InputStream;
13import java.lang.reflect.Field;
14import java.lang.reflect.Method;
15import java.security.AccessController;
16import java.security.PrivilegedAction;
17import java.util.Arrays;
18import java.util.Collection;
19import java.util.Comparator;
20import java.util.Objects;
21import java.util.stream.Stream;
22
23import org.openstreetmap.josm.command.Command;
24import org.openstreetmap.josm.data.osm.Node;
25import org.openstreetmap.josm.data.osm.OsmPrimitive;
26import org.openstreetmap.josm.data.osm.OsmUtils;
27import org.openstreetmap.josm.data.osm.Relation;
28import org.openstreetmap.josm.data.osm.RelationMember;
29import org.openstreetmap.josm.data.osm.Way;
30import org.openstreetmap.josm.gui.progress.AbstractProgressMonitor;
31import org.openstreetmap.josm.gui.progress.CancelHandler;
32import org.openstreetmap.josm.gui.progress.ProgressMonitor;
33import org.openstreetmap.josm.gui.progress.ProgressTaskId;
34import org.openstreetmap.josm.io.Compression;
35import org.openstreetmap.josm.testutils.FakeGraphics;
36import org.openstreetmap.josm.tools.JosmRuntimeException;
37import org.openstreetmap.josm.tools.Utils;
38
39import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
40
41/**
42 * Various utils, useful for unit tests.
43 */
44public final class TestUtils {
45
46 private TestUtils() {
47 // Hide constructor for utility classes
48 }
49
50 /**
51 * Returns the path to test data root directory.
52 * @return path to test data root directory
53 */
54 public static String getTestDataRoot() {
55 String testDataRoot = System.getProperty("josm.test.data");
56 if (testDataRoot == null || testDataRoot.isEmpty()) {
57 testDataRoot = "test/data";
58 System.out.println("System property josm.test.data is not set, using '" + testDataRoot + "'");
59 }
60 return testDataRoot.endsWith("/") ? testDataRoot : testDataRoot + "/";
61 }
62
63 /**
64 * Gets path to test data directory for given ticket id.
65 * @param ticketid Ticket numeric identifier
66 * @return path to test data directory for given ticket id
67 */
68 public static String getRegressionDataDir(int ticketid) {
69 return TestUtils.getTestDataRoot() + "/regress/" + ticketid;
70 }
71
72 /**
73 * Gets path to given file in test data directory for given ticket id.
74 * @param ticketid Ticket numeric identifier
75 * @param filename File name
76 * @return path to given file in test data directory for given ticket id
77 */
78 public static String getRegressionDataFile(int ticketid, String filename) {
79 return getRegressionDataDir(ticketid) + '/' + filename;
80 }
81
82 /**
83 * Gets input stream to given file in test data directory for given ticket id.
84 * @param ticketid Ticket numeric identifier
85 * @param filename File name
86 * @return path to given file in test data directory for given ticket id
87 * @throws IOException if any I/O error occurs
88 */
89 public static InputStream getRegressionDataStream(int ticketid, String filename) throws IOException {
90 return Compression.getUncompressedFileInputStream(new File(getRegressionDataDir(ticketid), filename));
91 }
92
93 /**
94 * Checks that the given Comparator respects its contract on the given table.
95 * @param <T> type of elements
96 * @param comparator The comparator to test
97 * @param array The array sorted for test purpose
98 */
99 @SuppressFBWarnings(value = "RV_NEGATING_RESULT_OF_COMPARETO")
100 public static <T> void checkComparableContract(Comparator<T> comparator, T[] array) {
101 System.out.println("Validating Comparable contract on array of "+array.length+" elements");
102 // Check each compare possibility
103 for (int i = 0; i < array.length; i++) {
104 T r1 = array[i];
105 for (int j = i; j < array.length; j++) {
106 T r2 = array[j];
107 int a = comparator.compare(r1, r2);
108 int b = comparator.compare(r2, r1);
109 if (i == j || a == b) {
110 if (a != 0 || b != 0) {
111 fail(getFailMessage(r1, r2, a, b));
112 }
113 } else {
114 if (a != -b) {
115 fail(getFailMessage(r1, r2, a, b));
116 }
117 }
118 for (int k = j; k < array.length; k++) {
119 T r3 = array[k];
120 int c = comparator.compare(r1, r3);
121 int d = comparator.compare(r2, r3);
122 if (a > 0 && d > 0) {
123 if (c <= 0) {
124 fail(getFailMessage(r1, r2, r3, a, b, c, d));
125 }
126 } else if (a == 0 && d == 0) {
127 if (c != 0) {
128 fail(getFailMessage(r1, r2, r3, a, b, c, d));
129 }
130 } else if (a < 0 && d < 0) {
131 if (c >= 0) {
132 fail(getFailMessage(r1, r2, r3, a, b, c, d));
133 }
134 }
135 }
136 }
137 }
138 // Sort relation array
139 Arrays.sort(array, comparator);
140 }
141
142 private static <T> String getFailMessage(T o1, T o2, int a, int b) {
143 return new StringBuilder("Compared\no1: ").append(o1).append("\no2: ")
144 .append(o2).append("\ngave: ").append(a).append("/").append(b)
145 .toString();
146 }
147
148 private static <T> String getFailMessage(T o1, T o2, T o3, int a, int b, int c, int d) {
149 return new StringBuilder(getFailMessage(o1, o2, a, b))
150 .append("\nCompared\no1: ").append(o1).append("\no3: ").append(o3).append("\ngave: ").append(c)
151 .append("\nCompared\no2: ").append(o2).append("\no3: ").append(o3).append("\ngave: ").append(d)
152 .toString();
153 }
154
155 /**
156 * Returns a private field value.
157 * @param obj object
158 * @param fieldName private field name
159 * @return private field value
160 * @throws ReflectiveOperationException if a reflection operation error occurs
161 */
162 public static Object getPrivateField(Object obj, String fieldName) throws ReflectiveOperationException {
163 Field f = obj.getClass().getDeclaredField(fieldName);
164 AccessController.doPrivileged((PrivilegedAction<Void>) () -> {
165 f.setAccessible(true);
166 return null;
167 });
168 return f.get(obj);
169 }
170
171 /**
172 * Returns an instance of {@link AbstractProgressMonitor} which keeps track of the monitor state,
173 * but does not show the progress.
174 * @return a progress monitor
175 */
176 public static ProgressMonitor newTestProgressMonitor() {
177 return new AbstractProgressMonitor(new CancelHandler()) {
178
179 @Override
180 protected void doBeginTask() {
181 }
182
183 @Override
184 protected void doFinishTask() {
185 }
186
187 @Override
188 protected void doSetIntermediate(boolean value) {
189 }
190
191 @Override
192 protected void doSetTitle(String title) {
193 }
194
195 @Override
196 protected void doSetCustomText(String title) {
197 }
198
199 @Override
200 protected void updateProgress(double value) {
201 }
202
203 @Override
204 public void setProgressTaskId(ProgressTaskId taskId) {
205 }
206
207 @Override
208 public ProgressTaskId getProgressTaskId() {
209 return null;
210 }
211
212 @Override
213 public Component getWindowParent() {
214 return null;
215 }
216 };
217 }
218
219 /**
220 * Returns an instance of {@link Graphics2D}.
221 * @return a mockup graphics instance
222 */
223 public static Graphics2D newGraphics() {
224 return new FakeGraphics();
225 }
226
227 /**
228 * Creates a new way with the given tags (see {@link OsmUtils#createPrimitive(java.lang.String)}) and the nodes added
229 *
230 * @param tags the tags to set
231 * @param nodes the nodes to add
232 * @return a new way
233 */
234 public static Way newWay(String tags, Node... nodes) {
235 final Way way = (Way) OsmUtils.createPrimitive("way " + tags);
236 for (Node node : nodes) {
237 way.addNode(node);
238 }
239 return way;
240 }
241
242 /**
243 * Creates a new relation with the given tags (see {@link OsmUtils#createPrimitive(java.lang.String)}) and the members added
244 *
245 * @param tags the tags to set
246 * @param members the members to add
247 * @return a new relation
248 */
249 public static Relation newRelation(String tags, RelationMember... members) {
250 final Relation relation = (Relation) OsmUtils.createPrimitive("relation " + tags);
251 for (RelationMember member : members) {
252 relation.addMember(member);
253 }
254 return relation;
255 }
256
257 /**
258 * Creates a new empty command.
259 * @return a new empty command
260 */
261 public static Command newCommand() {
262 return new Command() {
263 @Override
264 public String getDescriptionText() {
265 return "";
266 }
267
268 @Override
269 public void fillModifiedData(Collection<OsmPrimitive> modified, Collection<OsmPrimitive> deleted,
270 Collection<OsmPrimitive> added) {
271 // Do nothing
272 }
273 };
274 }
275
276 /**
277 * Ensures 100% code coverage for enums.
278 * @param enumClass enum class to cover
279 */
280 public static void superficialEnumCodeCoverage(Class<? extends Enum<?>> enumClass) {
281 try {
282 Method values = enumClass.getMethod("values");
283 Method valueOf = enumClass.getMethod("valueOf", String.class);
284 Utils.setObjectsAccessible(values, valueOf);
285 for (Object o : (Object[]) values.invoke(null)) {
286 assertEquals(o, valueOf.invoke(null, ((Enum<?>) o).name()));
287 }
288 } catch (IllegalArgumentException | ReflectiveOperationException | SecurityException e) {
289 throw new JosmRuntimeException(e);
290 }
291 }
292
293 /**
294 * Get a descendant component by name.
295 * @param root The root component to start searching from.
296 * @param name The component name
297 * @return The component with that name or null if it does not exist.
298 * @since 12045
299 */
300 public static Component getComponentByName(Component root, String name) {
301 if (name.equals(root.getName())) {
302 return root;
303 } else if (root instanceof Container) {
304 Container container = (Container) root;
305 return Stream.of(container.getComponents())
306 .map(child -> getComponentByName(child, name))
307 .filter(Objects::nonNull)
308 .findFirst().orElse(null);
309 } else {
310 return null;
311 }
312 }
313}
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