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authorJim Hahn <jrh3@att.com>2018-02-07 17:13:32 -0500
committerJim Hahn <jrh3@att.com>2018-02-08 10:32:53 -0500
commite9fd35a303a5f5f41726c3216c8acd7598a3a494 (patch)
tree8793c41d46c0e5a1bf0101bae64f238123af931f /utils-test/src/test/java
parent82bc8f543e578f32201d07a23b42d8539b89a4f1 (diff)
Add ExtractAppender to facilite junit tests
Added ExtractAppender to provide a way for junit tests to capture data sent to a logger. Changed logback.version to 1.2.3 and moved the property to the top-level pom. Updated license date in top-level pom. Refactored ExceptionsText, adding ErrorsTester and ThrowablesTester classes to reduce sonar issues. Change-Id: Ief7d08972bf4e7037b59c2afe4b77b252f2ad60a Issue-ID: POLICY-582 Signed-off-by: Jim Hahn <jrh3@att.com>
Diffstat (limited to 'utils-test/src/test/java')
-rw-r--r--utils-test/src/test/java/org/onap/policy/common/utils/test/ConstructionErrorTest.java37
-rw-r--r--utils-test/src/test/java/org/onap/policy/common/utils/test/ErrorsTesterTest.java77
-rw-r--r--utils-test/src/test/java/org/onap/policy/common/utils/test/ExceptionsTesterTest.java110
-rw-r--r--utils-test/src/test/java/org/onap/policy/common/utils/test/ThrowablesTesterTest.java216
-rw-r--r--utils-test/src/test/java/org/onap/policy/common/utils/test/log/logback/ExtractAppenderTest.java484
5 files changed, 820 insertions, 104 deletions
diff --git a/utils-test/src/test/java/org/onap/policy/common/utils/test/ConstructionErrorTest.java b/utils-test/src/test/java/org/onap/policy/common/utils/test/ConstructionErrorTest.java
new file mode 100644
index 00000000..4a6cd90e
--- /dev/null
+++ b/utils-test/src/test/java/org/onap/policy/common/utils/test/ConstructionErrorTest.java
@@ -0,0 +1,37 @@
+/*
+ * ============LICENSE_START=======================================================
+ * Integrity Audit
+ * ================================================================================
+ * Copyright (C) 2018 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.common.utils.test;
+
+import static org.junit.Assert.*;
+
+import org.junit.Test;
+
+/**
+ *
+ */
+public class ConstructionErrorTest extends ErrorsTester {
+
+ @Test
+ public void test() throws Exception {
+ assertEquals(4, testError(ConstructionError.class));
+ }
+
+}
diff --git a/utils-test/src/test/java/org/onap/policy/common/utils/test/ErrorsTesterTest.java b/utils-test/src/test/java/org/onap/policy/common/utils/test/ErrorsTesterTest.java
new file mode 100644
index 00000000..ae684d52
--- /dev/null
+++ b/utils-test/src/test/java/org/onap/policy/common/utils/test/ErrorsTesterTest.java
@@ -0,0 +1,77 @@
+/*
+ * ============LICENSE_START=======================================================
+ * Integrity Monitor
+ * ================================================================================
+ * Copyright (C) 2018 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.common.utils.test;
+
+import static org.junit.Assert.assertEquals;
+
+import org.junit.Test;
+
+public class ErrorsTesterTest {
+
+ @Test
+ public void test() {
+ assertEquals(2, new ErrorsTester().testError(SimpleError.class));
+ assertEquals(5, new ErrorsTester().testError(StaticError.class));
+ }
+
+ /**
+ * Used to test a simple success case.
+ */
+ public static class SimpleError extends Error {
+ private static final long serialVersionUID = 1L;
+
+ public SimpleError() {
+ super();
+ }
+
+ public SimpleError(String message) {
+ super(message);
+ }
+ }
+
+ /**
+ * Used to test the exhaustive success case.
+ */
+ public static class StaticError extends Error {
+ private static final long serialVersionUID = 1L;
+
+ public StaticError() {
+ super();
+ }
+
+ public StaticError(String message) {
+ super(message);
+ }
+
+ public StaticError(Throwable cause) {
+ super(cause);
+ }
+
+ public StaticError(String message, Throwable cause) {
+ super(message, cause);
+ }
+
+ public StaticError(String message, Throwable cause, boolean enableSuppression, boolean writableStackTrace) {
+ super(message, cause, enableSuppression, writableStackTrace);
+ }
+ }
+
+}
diff --git a/utils-test/src/test/java/org/onap/policy/common/utils/test/ExceptionsTesterTest.java b/utils-test/src/test/java/org/onap/policy/common/utils/test/ExceptionsTesterTest.java
index c6af77a2..3848acd0 100644
--- a/utils-test/src/test/java/org/onap/policy/common/utils/test/ExceptionsTesterTest.java
+++ b/utils-test/src/test/java/org/onap/policy/common/utils/test/ExceptionsTesterTest.java
@@ -27,124 +27,26 @@ import org.junit.Test;
public class ExceptionsTesterTest {
@Test
- public void test() throws Exception {
+ public void test() {
assertEquals(2, new ExceptionsTester().test(SimpleException.class));
assertEquals(8, new ExceptionsTester().test(StaticException.class));
}
@Test(expected = AssertionError.class)
- public void testIgnoreMessageException() throws Exception {
- new ExceptionsTester().test(IgnoreMessageException.class);
- }
-
- @Test(expected = AssertionError.class)
- public void testIgnoreCauseException() throws Exception {
- new ExceptionsTester().test(IgnoreCauseException.class);
- }
-
- @Test(expected = AssertionError.class)
- public void testNonStaticException() throws Exception {
+ public void testNoConstructorsException() {
new ExceptionsTester().test(NoConstructorsException.class);
}
- @Test(expected = AssertionError.class)
- public void testAlwaysSuppressException() throws Exception {
- new ExceptionsTester().test(AlwaysSuppressException.class);
- }
-
- @Test(expected = AssertionError.class)
- public void testNeverSuppressException() throws Exception {
- new ExceptionsTester().test(NeverSuppressException.class);
- }
-
- @Test(expected = AssertionError.class)
- public void testAlwaysWritableException() throws Exception {
- new ExceptionsTester().test(AlwaysWritableException.class);
- }
-
- @Test(expected = AssertionError.class)
- public void testNeverWritableException() throws Exception {
- new ExceptionsTester().test(NeverWritableException.class);
- }
-
/**
- * Used to test a failure case - message text is ignored.
- */
- public static class IgnoreMessageException extends Exception {
- private static final long serialVersionUID = 1L;
-
- public IgnoreMessageException(String message) {
- super("bogus");
- }
- }
-
- /**
- * Used to test a failure case - cause is ignored.
- */
- public static class IgnoreCauseException extends Exception {
- private static final long serialVersionUID = 1L;
-
- public IgnoreCauseException(Throwable cause) {
- super(new Exception("another cause"));
- }
- }
-
- /**
- * Used to test a failure case - this has no standard constructions.
+ * Used to test a failure case - this has no standard constructors. The only
+ * constructor it has takes an "int", thus it is not one of the standard
+ * constructors.
*/
public static class NoConstructorsException extends Exception {
private static final long serialVersionUID = 1L;
public NoConstructorsException(int value) {
- super(String.valueOf(value));
- }
- }
-
- /**
- * Used to test a failure case - always suppresses.
- */
- public static class AlwaysSuppressException extends Exception {
- private static final long serialVersionUID = 1L;
-
- public AlwaysSuppressException(String message, Throwable cause, boolean enableSuppression,
- boolean writableStackTrace) {
- super(message, cause, true, writableStackTrace);
- }
- }
-
- /**
- * Used to test a failure case - never suppresses.
- */
- public static class NeverSuppressException extends Exception {
- private static final long serialVersionUID = 1L;
-
- public NeverSuppressException(String message, Throwable cause, boolean enableSuppression,
- boolean writableStackTrace) {
- super(message, cause, false, writableStackTrace);
- }
- }
-
- /**
- * Used to test a failure case - always allows stack writes.
- */
- public static class AlwaysWritableException extends Exception {
- private static final long serialVersionUID = 1L;
-
- public AlwaysWritableException(String message, Throwable cause, boolean enableSuppression,
- boolean writableStackTrace) {
- super(message, cause, enableSuppression, true);
- }
- }
-
- /**
- * Used to test a failure case - never allows stack writes.
- */
- public static class NeverWritableException extends Exception {
- private static final long serialVersionUID = 1L;
-
- public NeverWritableException(String message, Throwable cause, boolean enableSuppression,
- boolean writableStackTrace) {
- super(message, cause, enableSuppression, false);
+ super();
}
}
diff --git a/utils-test/src/test/java/org/onap/policy/common/utils/test/ThrowablesTesterTest.java b/utils-test/src/test/java/org/onap/policy/common/utils/test/ThrowablesTesterTest.java
new file mode 100644
index 00000000..cb96e98f
--- /dev/null
+++ b/utils-test/src/test/java/org/onap/policy/common/utils/test/ThrowablesTesterTest.java
@@ -0,0 +1,216 @@
+/*
+ * ============LICENSE_START=======================================================
+ * Integrity Monitor
+ * ================================================================================
+ * Copyright (C) 2018 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.common.utils.test;
+
+import static org.junit.Assert.assertEquals;
+
+import org.junit.Test;
+
+public class ThrowablesTesterTest {
+
+ @Test
+ public void test() {
+ assertEquals(2, new ThrowablesTester().testThrowable(SimpleThrowable.class));
+ assertEquals(5, new ThrowablesTester().testThrowable(StaticThrowable.class));
+ }
+
+ @Test
+ public void testNoConstructorsThrowable() {
+ // this will not throw an error, but it should return 0, as there are
+ // no matching constructors
+ assertEquals(0, new ThrowablesTester().testThrowable(NoConstructorsThrowable.class));
+ }
+
+ @Test(expected = AssertionError.class)
+ public void testIgnoreMessageThrowable() {
+ new ThrowablesTester().testThrowable(IgnoreMessageThrowable.class);
+ }
+
+ @Test(expected = AssertionError.class)
+ public void testIgnoreCauseThrowable() {
+ new ThrowablesTester().testThrowable(IgnoreCauseThrowable.class);
+ }
+
+ @Test(expected = AssertionError.class)
+ public void testAlwaysSuppressThrowable() {
+ new ThrowablesTester().testThrowable(AlwaysSuppressThrowable.class);
+ }
+
+ @Test(expected = AssertionError.class)
+ public void testNeverSuppressThrowable() {
+ new ThrowablesTester().testThrowable(NeverSuppressThrowable.class);
+ }
+
+ @Test(expected = AssertionError.class)
+ public void testAlwaysWritableThrowable() {
+ new ThrowablesTester().testThrowable(AlwaysWritableThrowable.class);
+ }
+
+ @Test(expected = AssertionError.class)
+ public void testNeverWritableThrowable() {
+ new ThrowablesTester().testThrowable(NeverWritableThrowable.class);
+ }
+
+ @Test(expected = ConstructionError.class)
+ public void testThrowInstantiationException() {
+ new ThrowablesTester().testThrowable(ThrowInstantiationException.class);
+ }
+
+ /**
+ * Used to test a failure case - message text is ignored.
+ */
+ public static class IgnoreMessageThrowable extends Throwable {
+ private static final long serialVersionUID = 1L;
+
+ public IgnoreMessageThrowable(String message) {
+ super("bogus");
+ }
+ }
+
+ /**
+ * Used to test a failure case - cause is ignored.
+ */
+ public static class IgnoreCauseThrowable extends Throwable {
+ private static final long serialVersionUID = 1L;
+
+ public IgnoreCauseThrowable(Throwable cause) {
+ super(new Throwable("another cause"));
+ }
+ }
+
+ /**
+ * Used to test a failure case - this has no standard constructors. The only
+ * constructor it has takes an "int", thus it is not one of the standard
+ * constructors.
+ */
+ public static class NoConstructorsThrowable extends Throwable {
+ private static final long serialVersionUID = 1L;
+
+ public NoConstructorsThrowable(int value) {
+ super();
+ }
+ }
+
+ /**
+ * Used to test a failure case - always suppresses.
+ */
+ public static class AlwaysSuppressThrowable extends Throwable {
+ private static final long serialVersionUID = 1L;
+
+ public AlwaysSuppressThrowable(String message, Throwable cause, boolean enableSuppression,
+ boolean writableStackTrace) {
+ super(message, cause, true, writableStackTrace);
+ }
+ }
+
+ /**
+ * Used to test a failure case - never suppresses.
+ */
+ public static class NeverSuppressThrowable extends Throwable {
+ private static final long serialVersionUID = 1L;
+
+ public NeverSuppressThrowable(String message, Throwable cause, boolean enableSuppression,
+ boolean writableStackTrace) {
+ super(message, cause, false, writableStackTrace);
+ }
+ }
+
+ /**
+ * Used to test a failure case - always allows stack writes.
+ */
+ public static class AlwaysWritableThrowable extends Throwable {
+ private static final long serialVersionUID = 1L;
+
+ public AlwaysWritableThrowable(String message, Throwable cause, boolean enableSuppression,
+ boolean writableStackTrace) {
+ super(message, cause, enableSuppression, true);
+ }
+ }
+
+ /**
+ * Used to test a failure case - never allows stack writes.
+ */
+ public static class NeverWritableThrowable extends Throwable {
+ private static final long serialVersionUID = 1L;
+
+ public NeverWritableThrowable(String message, Throwable cause, boolean enableSuppression,
+ boolean writableStackTrace) {
+ super(message, cause, enableSuppression, false);
+ }
+ }
+
+ /**
+ * Used to test a failure case - throws InstantiationException when
+ * constructed.
+ */
+ public static class ThrowInstantiationException extends Throwable {
+ private static final long serialVersionUID = 1L;
+
+ public ThrowInstantiationException(String message, Throwable cause, boolean enableSuppression,
+ boolean writableStackTrace) throws InstantiationException {
+
+ throw new InstantiationException(ThrowablesTester.EXPECTED_EXCEPTION_MSG);
+ }
+ }
+
+ /**
+ * Used to test a simple success case.
+ */
+ public static class SimpleThrowable extends Throwable {
+ private static final long serialVersionUID = 1L;
+
+ public SimpleThrowable() {
+ super();
+ }
+
+ public SimpleThrowable(String message) {
+ super(message);
+ }
+ }
+
+ /**
+ * Used to test the exhaustive success case.
+ */
+ public static class StaticThrowable extends Throwable {
+ private static final long serialVersionUID = 1L;
+
+ public StaticThrowable() {
+ super();
+ }
+
+ public StaticThrowable(String message) {
+ super(message);
+ }
+
+ public StaticThrowable(Throwable cause) {
+ super(cause);
+ }
+
+ public StaticThrowable(String message, Throwable cause) {
+ super(message, cause);
+ }
+
+ public StaticThrowable(String message, Throwable cause, boolean enableSuppression, boolean writableStackTrace) {
+ super(message, cause, enableSuppression, writableStackTrace);
+ }
+ }
+
+}
diff --git a/utils-test/src/test/java/org/onap/policy/common/utils/test/log/logback/ExtractAppenderTest.java b/utils-test/src/test/java/org/onap/policy/common/utils/test/log/logback/ExtractAppenderTest.java
new file mode 100644
index 00000000..a9a69252
--- /dev/null
+++ b/utils-test/src/test/java/org/onap/policy/common/utils/test/log/logback/ExtractAppenderTest.java
@@ -0,0 +1,484 @@
+/*
+ * ============LICENSE_START=======================================================
+ * Integrity Audit
+ * ================================================================================
+ * Copyright (C) 2018 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.common.utils.test.log.logback;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+
+import java.util.Arrays;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.concurrent.atomic.AtomicBoolean;
+import java.util.concurrent.atomic.AtomicInteger;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.slf4j.LoggerFactory;
+
+import ch.qos.logback.classic.Level;
+import ch.qos.logback.classic.Logger;
+import ch.qos.logback.classic.spi.ILoggingEvent;
+
+public class ExtractAppenderTest {
+
+ /**
+ * Milliseconds to wait for a thread to terminate.
+ */
+ private static final long THREAD_WAIT_MS = 5000l;
+
+ private static Logger logger;
+
+ private List<Thread> threads;
+
+ @BeforeClass
+ public static void setUpBeforeClass() throws Exception {
+ logger = (Logger) LoggerFactory.getLogger(ExtractAppenderTest.class);
+ logger.setLevel(Level.INFO);
+ }
+
+ @Before
+ public void setUp() throws Exception {
+ threads = new LinkedList<>();
+ }
+
+ @After
+ public void tearDown() throws Exception {
+ logger.detachAndStopAllAppenders();
+
+ for (Thread p : threads) {
+ p.interrupt();
+ p.join(THREAD_WAIT_MS);
+ }
+ }
+
+ @Test
+ public void testExtractAppender() {
+ AtomicInteger count = new AtomicInteger(0);
+
+ ExtractAppender p = new ExtractAppender() {
+ @Override
+ protected void append(ILoggingEvent event) {
+ count.incrementAndGet();
+ super.append(event);
+ }
+ };
+
+ addAppender(p);
+
+ logger.info("hello");
+ logger.info("world");
+
+ // "append" should always be called
+ assertEquals(2, count.get());
+
+ // appender with no patterns - everything should match
+ assertEquals(strList("hello", "world"), p.getExtracted());
+
+ // add a pattern and verify match
+ p.setPattern("abc[0-9]");
+ logger.info("hello abc1");
+
+ // this should not match
+ logger.info("hello def2");
+
+ assertEquals(4, count.get());
+ assertEquals(strList("hello", "world", "abc1"), p.getExtracted());
+ }
+
+ @Test
+ public void testExtractAppenderStringArray() {
+ AtomicInteger count = new AtomicInteger(0);
+
+ ExtractAppender p = new ExtractAppender("abc[0-9]", "def[0-9]") {
+ @Override
+ protected void append(ILoggingEvent event) {
+ count.incrementAndGet();
+ super.append(event);
+ }
+ };
+
+ addAppender(p);
+
+ logger.info("hello abc1 world");
+ logger.info("world ghi2 world"); // no match
+ logger.info("world def3 world");
+ logger.info("hello abc4");
+ logger.info("abc5 world");
+ logger.info("hello def6");
+ logger.info("ghi7 world"); // no match
+ logger.info("def8 world");
+
+ // "append" should always be called
+ assertEquals(8, count.get());
+
+ assertEquals(strList("abc1", "def3", "abc4", "abc5", "def6", "def8"), p.getExtracted());
+
+ p.setPattern("ghi[0-9]");
+ logger.info("hello abc9");
+ logger.info("hello ghi9");
+
+ // this should not match
+ logger.info("hello xyz");
+
+ assertEquals(11, count.get());
+ assertEquals(strList("abc1", "def3", "abc4", "abc5", "def6", "def8", "abc9", "ghi9"), p.getExtracted());
+ }
+
+ @Test
+ public void testExtractAppenderQueueStringArray() {
+ // no. of matches allowed in the list
+ int nallowed = 3;
+
+ AtomicInteger count = new AtomicInteger(0);
+
+ LinkedList<String> queue = new LinkedList<String>() {
+ private static final long serialVersionUID = 1L;
+
+ @Override
+ public boolean offer(String e) {
+ if(count.incrementAndGet() <= nallowed) {
+ return super.offer(e);
+
+ } else {
+ return false;
+ }
+ }
+ };
+
+ ExtractAppender p = new ExtractAppender(queue, "abc[0-9]");
+ addAppender(p);
+
+ // these shouldn't match
+ for(int x = 0; x < 10; ++x) {
+ logger.info("xyz");
+ }
+
+ int nmatches = 10;
+
+ LinkedList<String> expected = new LinkedList<>();
+
+ for(int x = 0; x < nmatches; ++x) {
+ String msg = "abc" + x;
+ logger.info(msg + " world");
+
+ if(x < nallowed) {
+ expected.add(msg);
+ }
+ }
+
+ // "offer" should always be called for a match
+ assertEquals(nmatches, count.get());
+
+ assertEquals(expected, p.getExtracted());
+ }
+
+ @Test
+ public void testAppendILoggingEvent_NoPatterns() {
+ ExtractAppender p = makeAppender();
+
+ logger.info("hello");
+ logger.info("world");
+
+ assertEquals(strList("hello", "world"), p.getExtracted());
+ }
+
+ @Test
+ public void testAppendILoggingEvent_MatchFirstPattern() {
+ ExtractAppender p = makeAppender("abc[0-9]", "def[0-9]");
+
+ logger.info("hello abc1");
+ logger.info("world xyz2");
+
+ assertEquals(strList("abc1"), p.getExtracted());
+ }
+
+ @Test
+ public void testAppendILoggingEvent_MatchLastPattern() {
+ ExtractAppender p = makeAppender("abc[0-9]", "def[0-9]");
+
+ logger.info("hello def1");
+ logger.info("world xyz2");
+
+ assertEquals(strList("def1"), p.getExtracted());
+ }
+
+ @Test
+ public void testAppendILoggingEvent_Group1() {
+ ExtractAppender p = makeAppender("hello (abc)|(xyz)", "def[0-9]");
+
+ logger.info("hello abc, world!");
+ logger.info("world abc");
+
+ assertEquals(strList("abc"), p.getExtracted());
+ }
+
+ @Test
+ public void testAppendILoggingEvent_Group3() {
+ ExtractAppender p = makeAppender("hello (abc)|(pdq)|(xyz)", "def[0-9]");
+
+ logger.info("say hello xyz, world!");
+ logger.info("world abc");
+
+ assertEquals(strList("xyz"), p.getExtracted());
+ }
+
+ @Test
+ public void testAppendILoggingEvent_NoGroup() {
+ ExtractAppender p = makeAppender("hello abc");
+
+ logger.info("say hello abc, world!");
+ logger.info("world abc");
+
+ assertEquals(strList("hello abc"), p.getExtracted());
+ }
+
+ @Test
+ public void testGetExtracted() {
+ ExtractAppender p = makeAppender("abc[1-9]");
+
+ logger.info("hello abc1 world");
+ logger.info("world ghi2 world"); // no match
+ logger.info("hello abc3");
+
+ List<String> oldlst = p.getExtracted();
+ assertEquals(strList("abc1", "abc3"), oldlst);
+ assertEquals(oldlst, p.getExtracted());
+
+ logger.info("abc9");
+ assertEquals(strList("abc1", "abc3", "abc9"), p.getExtracted());
+ }
+
+ @Test
+ public void testClearExtractions() {
+ ExtractAppender p = makeAppender("abc[1-9]");
+
+ logger.info("hello abc1 world");
+ logger.info("world ghi2 world");
+ logger.info("hello abc3");
+
+ assertEquals(strList("abc1", "abc3"), p.getExtracted());
+
+ p.clearExtractions();
+
+ // list should be empty now
+ assertEquals(strList(), p.getExtracted());
+
+ logger.info("hello abc4 world");
+ logger.info("world ghi5 world");
+ logger.info("hello abc6");
+
+ // list should only contain the new items
+ assertEquals(strList("abc4", "abc6"), p.getExtracted());
+ }
+
+ @Test
+ public void testSetPattern() {
+ ExtractAppender p = makeAppender("abc[1-9]");
+
+ logger.info("hello abc1 world");
+ logger.info("world ghi2 world"); // no match
+ logger.info("hello abc3");
+
+ assertEquals(strList("abc1", "abc3"), p.getExtracted());
+
+ p.setPattern("ghi[0-9]");
+
+ logger.info("world ghi4 world"); // this should match now
+ logger.info("hello abc5"); // this should still match
+ logger.info("hello xyz5"); // no match
+
+ assertEquals(strList("abc1", "abc3", "ghi4", "abc5"), p.getExtracted());
+ }
+
+ /**
+ * Launches threads doing everything in parallel to ensure nothing crashes.
+ *
+ * @throws Exception
+ */
+ @Test
+ public void test_MultiThreaded() throws Exception {
+ // when to stop
+ long tend = System.currentTimeMillis() + 250;
+
+ // maximum number of items allowed in the extraction list
+ int maxItems = 10;
+
+ // this will be set if one of the threads generates an error
+ AtomicBoolean err = new AtomicBoolean(false);
+
+ // extracted messages go here - this is a finite-length queue since
+ // we don't know how many messages may actually be logged
+ LinkedList<String> queue = new LinkedList<String>() {
+ private static final long serialVersionUID = 1L;
+
+ @Override
+ public boolean offer(String e) {
+ if (size() < maxItems) {
+ return super.offer(e);
+ } else {
+ return false;
+ }
+ }
+ };
+
+ ExtractAppender app = new ExtractAppender(queue, "abc[1-9]");
+ addAppender(app);
+
+ // create some threads to add another pattern
+ addThread(tend, err, xtxt -> {
+ app.setPattern("def[0-9]");
+ });
+
+ // create some threads to log "abc" messages
+ addThread(tend, err, xtxt -> {
+ logger.info("hello abc" + xtxt + "world!");
+ });
+
+ // create some threads to log "def" messages
+ addThread(tend, err, xtxt -> {
+ logger.info("hello def" + xtxt + "world!");
+ });
+
+ // create some threads to get extractions
+ addThread(tend, err, xtxt -> {
+ app.getExtracted();
+ });
+
+ // create some threads to clear extractions
+ addThread(tend, err, xtxt -> {
+ app.clearExtractions();
+
+ // don't want to clear the list too frequently
+ // so sleep a bit in between
+ try {
+ Thread.sleep(10 + Integer.valueOf(xtxt));
+
+ } catch (InterruptedException e) {
+ Thread.currentThread().interrupt();
+ throw e;
+ }
+ });
+
+ /*
+ * Finally ready to start.
+ */
+
+ // start all of the threads
+ for (Thread t : threads) {
+ t.setDaemon(true);
+ t.start();
+ }
+
+ // wait for each thread to stop
+ for (Thread t : threads) {
+ t.join(THREAD_WAIT_MS);
+ assertFalse(t.isAlive());
+ }
+
+ // ensure none of the threads threw an exception
+ assertFalse(err.get());
+ }
+
+ /**
+ * Adds multiple threads to perform some function repeatedly until the given
+ * time is reached.
+ *
+ * @param tend
+ * time, in milliseconds, when the test should terminate
+ * @param haderr
+ * this will be set to {@code true} if the function throws an
+ * exception other than an InterruptedException
+ * @param func
+ * function to be repeatedly invoked
+ */
+ private void addThread(long tend, AtomicBoolean haderr, VoidFunction func) {
+ // number of threads of each type to create
+ int neach = 3;
+
+ for (int x = 0; x < neach; ++x) {
+ String xtxt = String.valueOf(x);
+
+ threads.add(new Thread() {
+ @Override
+ public void run() {
+ try {
+ while (System.currentTimeMillis() < tend) {
+ func.apply(xtxt);
+ }
+
+ } catch (InterruptedException ex) {
+ Thread.currentThread().interrupt();
+
+ } catch (Exception ex) {
+ haderr.set(true);
+ }
+ }
+ });
+
+ }
+ }
+
+ /**
+ * Makes an appender that recognizes the given set of strings.
+ *
+ * @param strings
+ * regular expressions to be matched
+ * @return a new appender
+ */
+ private ExtractAppender makeAppender(String... strings) {
+ ExtractAppender p = new ExtractAppender(strings);
+
+ addAppender(p);
+
+ return p;
+ }
+
+ /**
+ * Adds an appender to the logger.
+ *
+ * @param app
+ * appender to be added
+ */
+ private void addAppender(ExtractAppender app) {
+ app.setContext(logger.getLoggerContext());
+ app.start();
+
+ logger.addAppender(app);
+ }
+
+ /**
+ * Converts an array of strings into a list of strings.
+ *
+ * @param strings
+ * array of strings
+ * @return a list of the strings
+ */
+ private List<String> strList(String... strings) {
+ return Arrays.asList(strings);
+ }
+
+ @FunctionalInterface
+ public interface VoidFunction {
+ public void apply(String text) throws InterruptedException;
+ }
+}