Source Code Cross Referenced for LogTest.java in  » Testing » abbot-1.0.1 » abbot » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Testing » abbot 1.0.1 » abbot 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        // $Id: LogTest.java 1932 2006-08-01 02:46:10Z twall $
002:        // Copyright (c) Oculus Technologies Corporation, all rights reserved
003:        // ----------------------------------------------------------------------------
004:        package abbot;
005:
006:        import java.io.ByteArrayOutputStream;
007:        import java.io.PrintStream;
008:        import junit.extensions.abbot.*;
009:        import junit.framework.TestCase;
010:
011:        /** Testing for the Log class.
012:
013:         @author twall@users.sf.net
014:         */
015:
016:        public class LogTest extends TestCase {
017:
018:            private String stackNest(int nest, int lines) {
019:                if (nest <= 0)
020:                    return Log.getStack(lines);
021:                return stackNest(nest - 1, lines);
022:            }
023:
024:            private String className() {
025:                return getClass().getName();
026:            }
027:
028:            private ByteArrayOutputStream logContents;
029:            private PrintStream original;
030:
031:            protected void setUp() {
032:                logContents = new ByteArrayOutputStream();
033:                original = Log.getLog();
034:                Log.setEchoToConsole(false);
035:                Log.flush();
036:                Log.setDestination(new PrintStream(logContents));
037:            }
038:
039:            protected void tearDown() {
040:                logContents = null;
041:                Log.flush();
042:                Log.setDestination(original);
043:                Log.setEchoToConsole(true);
044:            }
045:
046:            /** Verify that the stack dump is accurate. */
047:            public void testStackLines() throws Exception {
048:                String dump = stackNest(3, Log.FULL_STACK);
049:                String atLine = "\\s*at " + className() + ".stackNest\\(.*\\)$";
050:                assertTrue("Full stack trace mismatch: '" + dump + "'", dump
051:                        .matches("(?sm)\\s*" + className()
052:                                + ".stackNest\\(.*\\)$" + atLine + atLine
053:                                + atLine + "\\s*at " + className()
054:                                + ".testStackLines\\(.*\\)$.*"));
055:                dump = stackNest(3, 1);
056:                assertTrue("Stack trace mismatch, 1 line: '" + dump + "'", dump
057:                        .matches("^\\s*" + className() + ".stackNest.*$"));
058:                dump = stackNest(3, 2);
059:                assertTrue("Stack trace mismatch, 2 lines: '" + dump + "'",
060:                        dump.matches("(?sm)\\s*" + className()
061:                                + ".stackNest.*$" + atLine + ".*"));
062:                dump = stackNest(3, 3);
063:                assertTrue("Stack trace mismatch, 3 lines: '" + dump + "'",
064:                        dump.matches("(?sm)\\s*" + className()
065:                                + ".stackNest.*$" + atLine + atLine + ".*"));
066:            }
067:
068:            /** Verify we get a proper stack trace. */
069:            public void testStackTrace() throws Exception {
070:                String dump = stackNest(4, Log.FULL_STACK);
071:                String atLine = "\\s*at " + className() + ".stackNest\\(.*\\)$";
072:                // We need to check multiple lines...
073:                assertTrue("Level 4 stack trace mismatch: '" + dump + "'", dump
074:                        .matches("(?sm)\\s*" + className()
075:                                + ".stackNest\\(.*\\)$" + atLine + atLine
076:                                + atLine + atLine + "\\s*at " + className()
077:                                + ".testStackTrace\\(.*\\)$.*"));
078:                dump = stackNest(3, Log.FULL_STACK);
079:                assertTrue("Level 3 stack trace mismatch: '" + dump + "'", dump
080:                        .matches("(?sm)\\s*" + className()
081:                                + ".stackNest\\(.*\\)$" + atLine + atLine
082:                                + atLine + "\\s*at " + className()
083:                                + ".testStackTrace\\(.*\\)$.*"));
084:                dump = stackNest(2, Log.FULL_STACK);
085:                assertTrue("Level 2 stack trace mismatch: '" + dump + "'", dump
086:                        .matches("(?sm)\\s*" + className()
087:                                + ".stackNest\\(.*\\)$" + atLine + atLine
088:                                + "\\s*at " + className()
089:                                + ".testStackTrace\\(.*\\)$.*"));
090:                dump = stackNest(1, Log.FULL_STACK);
091:                assertTrue("Level 1 stack trace mismatch: '" + dump + "'", dump
092:                        .matches("(?sm)\\s*" + className()
093:                                + ".stackNest\\(.*\\)$" + atLine + "\\s*at "
094:                                + className() + ".testStackTrace\\(.*\\)$.*"));
095:                dump = stackNest(0, Log.FULL_STACK);
096:                assertTrue("Level 0 stack trace mismatch: '" + dump + "'", dump
097:                        .matches("(?sm)\\s*" + className()
098:                                + ".stackNest\\(.*\\)$" + "\\s*at "
099:                                + className() + ".testStackTrace\\(.*\\)$.*"));
100:            }
101:
102:            /** Test class-from-string generation. */
103:            public void testDebugEnabling() {
104:                try {
105:                    try {
106:                        Class c = Class.forName(className());
107:                        assertEquals("Wrong class found by forName for "
108:                                + className(), LogTest.class, c);
109:                        Log.addDebugClass(LogTest.class);
110:                        assertTrue(
111:                                "Log class debugging not enabled after explicit enable",
112:                                Log.isClassDebugEnabled(LogTest.class));
113:
114:                        Log.removeDebugClass(LogTest.class.getName());
115:                        assertFalse(
116:                                "Log class debugging enabled after explicit disable",
117:                                Log.isClassDebugEnabled(LogTest.class));
118:
119:                        Log.addDebugClass(LogTest.class.getName(),
120:                                Log.FULL_STACK);
121:                        assertTrue("Log class debugging should be enabled", Log
122:                                .isClassDebugEnabled(LogTest.class));
123:                        assertEquals("Wrong log stack depth", Log.FULL_STACK,
124:                                Log.getClassStackDepth(LogTest.class.getName()));
125:                    } catch (ClassNotFoundException exc) {
126:                        fail("Can't derive class from " + className() + ": "
127:                                + exc);
128:                    }
129:                } finally {
130:                    Log.removeDebugClass(LogTest.class);
131:                }
132:            }
133:
134:            public void testSuppressUnenabledDebugOutput() {
135:                Log.debug("A message");
136:                Log.flush();
137:                assertEquals("Expect no debug output", "", logContents
138:                        .toString());
139:            }
140:
141:            public void testEnableDebugOutput() {
142:                String EXPECTED = "A message";
143:                Log.addDebugClass(LogTest.class);
144:                Log.debug(EXPECTED);
145:                Log.flush();
146:                try {
147:                    assertFalse("Missing debug output", "".equals(logContents
148:                            .toString()));
149:                    assertTrue("Incorrect debug output", logContents.toString()
150:                            .indexOf(EXPECTED) != -1);
151:                } finally {
152:                    Log.removeDebugClass(LogTest.class);
153:                }
154:            }
155:
156:            public void testSetDebugOutputDepth() {
157:                Log.addDebugClass(LogTest.class.getName() + ":" + 2);
158:                Log.debug("anything");
159:                Log.flush();
160:                try {
161:                    assertEquals("Expect two lines of stack trace: "
162:                            + logContents.toString(), 2, logContents.toString()
163:                            .split("\tat ").length);
164:                } finally {
165:                    Log.removeDebugClass(LogTest.class);
166:                }
167:            }
168:
169:            public void testWarnThrowable() {
170:                try {
171:                    throw new RuntimeException("rte");
172:                } catch (RuntimeException e) {
173:                    Log.warn(e);
174:                    Log.flush();
175:                    String output = logContents.toString();
176:                    assertFalse("No log output", "".equals(output));
177:                    assertTrue("Missng exception stack trace: " + output,
178:                            output.indexOf("Exception thrown at") != -1);
179:                    assertTrue("Missing 'caught at': " + output, output
180:                            .indexOf("caught at") != -1);
181:                    assertTrue("Missing default message: " + output, output
182:                            .indexOf(e.toString()) != -1);
183:                }
184:            }
185:
186:            public void testLogThrowable() {
187:                try {
188:                    throw new RuntimeException("logged exception");
189:                } catch (RuntimeException e) {
190:                    Log.log("Exception thrown", e);
191:                    Log.flush();
192:                    String output = logContents.toString();
193:                    assertFalse("No log output", "".equals(output));
194:                    assertTrue("Missng exception stack trace: " + output,
195:                            output.indexOf("Exception thrown at") != -1);
196:                    assertTrue("Missing 'caught at': " + output, output
197:                            .indexOf("caught at") != -1);
198:                    assertTrue("Missing default message: " + output, output
199:                            .indexOf(e.toString()) != -1);
200:                }
201:            }
202:
203:            public void testDebugThrowable() {
204:                Log.addDebugClass(LogTest.class);
205:                try {
206:                    throw new RuntimeException("rte");
207:                } catch (RuntimeException e) {
208:                    Log.debug("debug message", e);
209:                    Log.flush();
210:                    String output = logContents.toString();
211:                    assertFalse("No log output", "".equals(output));
212:                    assertTrue("Missng exception stack trace: " + output,
213:                            output.indexOf("Exception thrown at") != -1);
214:                    assertTrue("Missing 'caught at': " + output, output
215:                            .indexOf("caught at") != -1);
216:                    assertTrue("Missing default message: " + output, output
217:                            .indexOf(e.toString()) != -1);
218:                } finally {
219:                    Log.removeDebugClass(LogTest.class);
220:                }
221:            }
222:
223:            public void testLogRepeatedMessages() {
224:                final String MESSAGE = "message";
225:                Log.warn(MESSAGE);
226:                Log.warn(MESSAGE);
227:                Log.warn(MESSAGE);
228:                Log.warn("something else");
229:                Log.flush();
230:                String output = logContents.toString();
231:                assertTrue("Should indicate a message repeat count: " + output,
232:                        output.indexOf("repeated") != -1);
233:            }
234:
235:            // 39 ms for 1000 invocations
236:            public void testDebugSpeedWithNoDebugEnabled() {
237:                final int REPEAT = 1000;
238:                Timer timer = new Timer();
239:                for (int i = 0; i < REPEAT; i++) {
240:                }
241:                long base = timer.elapsed() + 1;
242:
243:                timer.reset();
244:                for (int i = 0; i < REPEAT; i++) {
245:                    Log.debug("i=" + i);
246:                }
247:                long debugged = timer.elapsed();
248:                long delta = debugged - base;
249:                int MAX_US_PER_DEBUG = 500;
250:                assertTrue("Expected debug overhead exceeded: " + delta * 1000
251:                        / REPEAT + "us >= " + MAX_US_PER_DEBUG + "us", delta
252:                        * 1000 / REPEAT < MAX_US_PER_DEBUG);
253:            }
254:
255:            public void testLogSpeed() {
256:                final int REPEAT = 1000;
257:                Timer timer = new Timer();
258:                for (int i = 0; i < REPEAT; i++) {
259:                }
260:                long base = timer.elapsed() + 1;
261:
262:                timer.reset();
263:                for (int i = 0; i < REPEAT; i++) {
264:                    Log.log("i=" + i);
265:                }
266:                long debugged = timer.elapsed();
267:                long delta = debugged - base;
268:                final int MAX_US_PER_DEBUG = 500;
269:                assertTrue("Expected log overhead exceeded: " + delta * 1000
270:                        / REPEAT + " >= " + MAX_US_PER_DEBUG + "us", delta
271:                        * 1000 / REPEAT < MAX_US_PER_DEBUG);
272:
273:                timer.reset();
274:                Log.flush();
275:                long elapsed = timer.elapsed();
276:
277:                final int MAX_US_PER_MSG = 500;
278:                assertTrue("Too long flushing " + REPEAT + " log messages: "
279:                        + elapsed + "ms",
280:                        elapsed * 1000 / REPEAT < MAX_US_PER_MSG);
281:            }
282:
283:            // flush: ~500ms for 1000 messages
284:            public void testDebugMemoryUse() {
285:                final int REPEAT = 1000;
286:                long delta = 0;
287:                long flush = 0;
288:                {
289:                    Log.addDebugClass(LogTest.class);
290:                    long before = SizeOf.getMemoryUse();
291:                    for (int i = 0; i < REPEAT; i++) {
292:                        Log.debug("i=" + i);
293:                    }
294:                    Timer timer = new Timer();
295:                    Log.flush();
296:                    flush = timer.elapsed();
297:                    delta = SizeOf.getMemoryUse() - before;
298:                    Log.removeDebugClass(LogTest.class);
299:                }
300:                System.out.println("Memory increase: " + delta / 1024 + "Kb");
301:                System.out.println("Flush time: " + flush + "ms for " + REPEAT
302:                        + " msgs");
303:            }
304:
305:            /**
306:             * Run the main suite of this test case.
307:             */
308:            public static void main(String[] args) {
309:                TestHelper.runTests(args, LogTest.class);
310:            }
311:        }
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