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1 | /******************************************************************************* |
2 | * Copyright (c) 2016 École Polytechnique de Montréal | |
3 | * | |
4 | * All rights reserved. This program and the accompanying materials are | |
5 | * made available under the terms of the Eclipse Public License v1.0 which | |
6 | * accompanies this distribution, and is available at | |
7 | * http://www.eclipse.org/legal/epl-v10.html | |
8 | *******************************************************************************/ | |
9 | ||
10 | package org.eclipse.tracecompass.statesystem.core.tests.statevalue; | |
11 | ||
12 | import static org.junit.Assert.assertArrayEquals; | |
13 | import static org.junit.Assert.assertEquals; | |
14 | ||
15 | import java.nio.BufferOverflowException; | |
16 | import java.nio.ByteBuffer; | |
17 | ||
18 | import org.eclipse.tracecompass.internal.provisional.statesystem.core.statevalue.ISafeByteBufferReader; | |
19 | import org.eclipse.tracecompass.internal.provisional.statesystem.core.statevalue.ISafeByteBufferWriter; | |
20 | import org.eclipse.tracecompass.internal.provisional.statesystem.core.statevalue.SafeByteBufferFactory; | |
21 | import org.eclipse.tracecompass.internal.statesystem.core.statevalue.SafeByteBufferWrapper; | |
22 | import org.junit.Test; | |
23 | ||
24 | /** | |
25 | * Test for the {@link SafeByteBufferWrapper} class | |
26 | * | |
27 | * @author Geneviève Bastien | |
28 | */ | |
29 | public class SafeByteBufferWrapperTest { | |
30 | ||
31 | private final ByteBuffer fMainBuffer; | |
32 | ||
33 | /** | |
34 | * Constructor. Prepares the main buffer and safe buffer | |
35 | */ | |
36 | public SafeByteBufferWrapperTest() { | |
37 | fMainBuffer = ByteBuffer.allocate(1024); | |
38 | } | |
39 | ||
40 | /** | |
41 | * Test the {@link SafeByteBufferWrapper#put(byte)} | |
42 | * {@link SafeByteBufferWrapper#get()} methods | |
43 | */ | |
44 | @Test | |
45 | public void testReadWriteByte() { | |
46 | byte val = Byte.MAX_VALUE; | |
47 | ||
48 | ISafeByteBufferWriter buffer = SafeByteBufferFactory.wrapWriter(fMainBuffer, 512); | |
49 | buffer.put(val); | |
50 | ||
51 | // Reset the buffer and read it again | |
52 | fMainBuffer.flip(); | |
53 | ISafeByteBufferReader reader = SafeByteBufferFactory.wrapReader(fMainBuffer, 512); | |
54 | assertEquals(val, reader.get()); | |
55 | } | |
56 | ||
57 | /** | |
58 | * Test the {@link SafeByteBufferWrapper#put(byte[])} | |
59 | * {@link SafeByteBufferWrapper#get(byte[])} methods | |
60 | */ | |
61 | @Test | |
62 | public void testReadWriteByteArray() { | |
63 | byte[] val = { 0, 2, 1, 3 }; | |
64 | ||
65 | ISafeByteBufferWriter buffer = SafeByteBufferFactory.wrapWriter(fMainBuffer, 512); | |
66 | buffer.put(val); | |
67 | ||
68 | // Reset the buffer and read it again | |
69 | fMainBuffer.flip(); | |
70 | ISafeByteBufferReader reader = SafeByteBufferFactory.wrapReader(fMainBuffer, 512); | |
71 | byte[] ret = new byte[4]; | |
72 | reader.get(ret); | |
73 | assertArrayEquals(val, ret); | |
74 | } | |
75 | ||
76 | /** | |
77 | * Test the {@link SafeByteBufferWrapper#putChar(char)} | |
78 | * {@link SafeByteBufferWrapper#getChar()} methods | |
79 | */ | |
80 | @Test | |
81 | public void testReadWriteChar() { | |
82 | char val = 24; | |
83 | ||
84 | ISafeByteBufferWriter buffer = SafeByteBufferFactory.wrapWriter(fMainBuffer, 512); | |
85 | buffer.putChar(val); | |
86 | ||
87 | // Reset the buffer and read it again | |
88 | fMainBuffer.flip(); | |
89 | ISafeByteBufferReader reader = SafeByteBufferFactory.wrapReader(fMainBuffer, 512); | |
90 | assertEquals(val, reader.getChar()); | |
91 | } | |
92 | ||
93 | /** | |
94 | * Test the {@link SafeByteBufferWrapper#putDouble(double)} | |
95 | * {@link SafeByteBufferWrapper#getDouble()} methods | |
96 | */ | |
97 | @Test | |
98 | public void testReadWriteDouble() { | |
99 | double val = Double.MAX_VALUE; | |
100 | ||
101 | ISafeByteBufferWriter buffer = SafeByteBufferFactory.wrapWriter(fMainBuffer, 512); | |
102 | buffer.putDouble(val); | |
103 | ||
104 | // Reset the buffer and read it again | |
105 | fMainBuffer.flip(); | |
106 | ISafeByteBufferReader reader = SafeByteBufferFactory.wrapReader(fMainBuffer, 512); | |
107 | assertEquals(val, reader.getDouble(), 10); | |
108 | } | |
109 | ||
110 | /** | |
111 | * Test the {@link SafeByteBufferWrapper#putFloat(float)} | |
112 | * {@link SafeByteBufferWrapper#getFloat()} methods | |
113 | */ | |
114 | @Test | |
115 | public void testReadWriteFloat() { | |
116 | float val = Float.MIN_VALUE; | |
117 | ||
118 | ISafeByteBufferWriter buffer = SafeByteBufferFactory.wrapWriter(fMainBuffer, 512); | |
119 | buffer.putFloat(val); | |
120 | ||
121 | // Reset the buffer and read it again | |
122 | fMainBuffer.flip(); | |
123 | ISafeByteBufferReader reader = SafeByteBufferFactory.wrapReader(fMainBuffer, 512); | |
124 | assertEquals(val, reader.getFloat(), 10); | |
125 | } | |
126 | ||
127 | /** | |
128 | * Test the {@link SafeByteBufferWrapper#putInt(int)} | |
129 | * {@link SafeByteBufferWrapper#getInt()} methods | |
130 | */ | |
131 | @Test | |
132 | public void testReadWriteInt() { | |
133 | int val = Integer.MAX_VALUE; | |
134 | ||
135 | ISafeByteBufferWriter buffer = SafeByteBufferFactory.wrapWriter(fMainBuffer, 512); | |
136 | buffer.putInt(val); | |
137 | ||
138 | // Reset the buffer and read it again | |
139 | fMainBuffer.flip(); | |
140 | ISafeByteBufferReader reader = SafeByteBufferFactory.wrapReader(fMainBuffer, 512); | |
141 | assertEquals(val, reader.getInt()); | |
142 | } | |
143 | ||
144 | /** | |
145 | * Test the {@link SafeByteBufferWrapper#putLong(long)} | |
146 | * {@link SafeByteBufferWrapper#getLong()} methods | |
147 | */ | |
148 | @Test | |
149 | public void testReadWriteLong() { | |
150 | long val = Long.MIN_VALUE; | |
151 | ||
152 | ISafeByteBufferWriter buffer = SafeByteBufferFactory.wrapWriter(fMainBuffer, 512); | |
153 | buffer.putLong(val); | |
154 | ||
155 | // Reset the buffer and read it again | |
156 | fMainBuffer.flip(); | |
157 | ISafeByteBufferReader reader = SafeByteBufferFactory.wrapReader(fMainBuffer, 512); | |
158 | assertEquals(val, reader.getLong()); | |
159 | } | |
160 | ||
161 | /** | |
162 | * Test the {@link SafeByteBufferWrapper#putShort(short)} | |
163 | * {@link SafeByteBufferWrapper#getShort()} methods | |
164 | */ | |
165 | @Test | |
166 | public void testReadWriteShort() { | |
167 | short val = Short.MIN_VALUE; | |
168 | ||
169 | ISafeByteBufferWriter buffer = SafeByteBufferFactory.wrapWriter(fMainBuffer, 512); | |
170 | buffer.putShort(val); | |
171 | ||
172 | // Reset the buffer and read it again | |
173 | fMainBuffer.flip(); | |
174 | ISafeByteBufferReader reader = SafeByteBufferFactory.wrapReader(fMainBuffer, 512); | |
175 | assertEquals(val, reader.getShort()); | |
176 | } | |
177 | ||
178 | /** | |
179 | * Test the {@link SafeByteBufferWrapper#putString(String)} | |
180 | * {@link SafeByteBufferWrapper#getString()} methods | |
181 | */ | |
182 | @Test | |
183 | public void testReadWriteString() { | |
184 | String val = "abcdefg"; | |
185 | ||
186 | ISafeByteBufferWriter buffer = SafeByteBufferFactory.wrapWriter(fMainBuffer, 512); | |
187 | buffer.putString(val); | |
188 | ||
189 | // Reset the buffer and read it again | |
190 | fMainBuffer.flip(); | |
191 | ISafeByteBufferReader reader = SafeByteBufferFactory.wrapReader(fMainBuffer, 512); | |
192 | assertEquals(val, reader.getString()); | |
193 | } | |
194 | ||
195 | /** | |
196 | * Test adding multiple values to the buffer, inside the limits | |
197 | */ | |
198 | @Test | |
199 | public void testMultipleValues() { | |
200 | int valInt = 98; | |
201 | short valShort = 34; | |
202 | String valStr = "myString"; | |
203 | long valLong = 254238908543254L; | |
204 | ||
205 | ISafeByteBufferWriter buffer = SafeByteBufferFactory.wrapWriter(fMainBuffer, 512); | |
206 | buffer.putInt(valInt); | |
207 | buffer.putShort(valShort); | |
208 | buffer.putString(valStr); | |
209 | buffer.putLong(valLong); | |
210 | ||
211 | // Reset the buffer and read it again | |
212 | fMainBuffer.flip(); | |
213 | ISafeByteBufferReader reader = SafeByteBufferFactory.wrapReader(fMainBuffer, 512); | |
214 | assertEquals(valInt, reader.getInt()); | |
215 | assertEquals(valShort, reader.getShort()); | |
216 | assertEquals(valStr, reader.getString()); | |
217 | assertEquals(valLong, reader.getLong()); | |
218 | } | |
219 | ||
220 | /** | |
221 | * Test writing over the limit of the buffer | |
222 | */ | |
223 | @Test(expected = BufferOverflowException.class) | |
224 | public void testLimit() { | |
225 | ISafeByteBufferWriter buffer = SafeByteBufferFactory.wrapWriter(fMainBuffer, 5); | |
226 | buffer.putDouble(Double.MIN_VALUE); | |
227 | } | |
228 | ||
229 | /** | |
230 | * Test writing to main buffer after writing to safe buffer | |
231 | */ | |
232 | @Test | |
233 | public void testMainBuffer() { | |
234 | String valString = "defghi"; | |
235 | long valLong = 54262542352L; | |
236 | int valInt = 2048; | |
237 | int bufferSize = Integer.BYTES + valString.length() + Long.BYTES; | |
238 | ||
239 | ISafeByteBufferWriter buffer = SafeByteBufferFactory.wrapWriter(fMainBuffer, bufferSize); | |
240 | buffer.putString(valString); | |
241 | buffer.putLong(valLong); | |
242 | fMainBuffer.putInt(valInt); | |
243 | ||
244 | // Flip the main buffer to read again | |
245 | fMainBuffer.flip(); | |
246 | ISafeByteBufferReader reader = SafeByteBufferFactory.wrapReader(fMainBuffer, bufferSize); | |
247 | assertEquals(valString, reader.getString()); | |
248 | assertEquals(valLong, reader.getLong()); | |
249 | assertEquals(valInt, fMainBuffer.getInt()); | |
250 | } | |
251 | ||
252 | /** | |
253 | * Test writing to main buffer after writing to safe buffer but not | |
254 | * completely | |
255 | */ | |
256 | @Test | |
257 | public void testMainBuffer2() { | |
258 | String valString = "defghi"; | |
259 | long valLong = 54262542352L; | |
260 | int valInt = 2048; | |
261 | int bufferSize = Integer.BYTES + valString.length() + Long.BYTES + Long.BYTES; | |
262 | ||
263 | ISafeByteBufferWriter buffer = SafeByteBufferFactory.wrapWriter(fMainBuffer, bufferSize); | |
264 | buffer.putString(valString); | |
265 | buffer.putLong(valLong); | |
266 | ||
267 | // Assert the main buffer's position is after the safe buffer, even | |
268 | // though it is not completely written | |
269 | assertEquals(bufferSize, fMainBuffer.position()); | |
270 | fMainBuffer.putInt(valInt); | |
271 | ||
272 | // Write the extra long at the end of the safe buffer | |
273 | buffer.putLong(valLong); | |
274 | ||
275 | // Start reading again | |
276 | fMainBuffer.flip(); | |
277 | ISafeByteBufferReader reader = SafeByteBufferFactory.wrapReader(fMainBuffer, bufferSize); | |
278 | assertEquals(valString, reader.getString()); | |
279 | assertEquals(valLong, reader.getLong()); | |
280 | assertEquals(valLong, reader.getLong()); | |
281 | assertEquals(valInt, fMainBuffer.getInt()); | |
282 | } | |
283 | ||
284 | /** | |
285 | * Test writing to main buffer before writing to safe buffer | |
286 | */ | |
287 | @Test | |
288 | public void testMainBuffer3() { | |
289 | String valString = "defghi"; | |
290 | long valLong = 54262542352L; | |
291 | int valInt = 2048; | |
292 | int bufferSize = Integer.BYTES + valString.length() + Long.BYTES; | |
293 | ||
294 | fMainBuffer.putLong(valLong); | |
295 | fMainBuffer.putInt(valInt); | |
296 | ||
297 | ISafeByteBufferWriter buffer = SafeByteBufferFactory.wrapWriter(fMainBuffer, bufferSize); | |
298 | buffer.putString(valString); | |
299 | buffer.putLong(valLong); | |
300 | ||
301 | fMainBuffer.flip(); | |
302 | assertEquals(valLong, fMainBuffer.getLong()); | |
303 | assertEquals(valInt, fMainBuffer.getInt()); | |
304 | ||
305 | // Flip the main buffer | |
306 | ISafeByteBufferReader reader = SafeByteBufferFactory.wrapReader(fMainBuffer, bufferSize); | |
307 | assertEquals(valString, reader.getString()); | |
308 | assertEquals(valLong, reader.getLong()); | |
309 | } | |
310 | ||
311 | } |