--- /dev/null
+package org.apache.lucene;
+
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.
+ */
+
+import java.io.Reader;
+
+import org.apache.lucene.util.LuceneTestCase;
+import org.apache.lucene.analysis.Analyzer;
+import org.apache.lucene.analysis.TokenStream;
+
+public class TestAssertions extends LuceneTestCase {
+
+ public void testBasics() {
+ try {
+ assert Boolean.FALSE.booleanValue();
+ fail("assertions are not enabled!");
+ } catch (AssertionError e) {
+ assert Boolean.TRUE.booleanValue();
+ }
+ }
+
+ static class TestAnalyzer1 extends Analyzer {
+ @Override
+ public final TokenStream tokenStream(String s, Reader r) { return null; }
+ @Override
+ public final TokenStream reusableTokenStream(String s, Reader r) { return null; }
+ }
+
+ static final class TestAnalyzer2 extends Analyzer {
+ @Override
+ public TokenStream tokenStream(String s, Reader r) { return null; }
+ @Override
+ public TokenStream reusableTokenStream(String s, Reader r) { return null; }
+ }
+
+ static class TestAnalyzer3 extends Analyzer {
+ @Override
+ public TokenStream tokenStream(String s, Reader r) { return null; }
+ @Override
+ public TokenStream reusableTokenStream(String s, Reader r) { return null; }
+ }
+
+ static class TestAnalyzer4 extends Analyzer {
+ @Override
+ public final TokenStream tokenStream(String s, Reader r) { return null; }
+ @Override
+ public TokenStream reusableTokenStream(String s, Reader r) { return null; }
+ }
+
+ static class TestTokenStream1 extends TokenStream {
+ @Override
+ public final boolean incrementToken() { return false; }
+ }
+
+ static final class TestTokenStream2 extends TokenStream {
+ @Override
+ public boolean incrementToken() { return false; }
+ }
+
+ static class TestTokenStream3 extends TokenStream {
+ @Override
+ public boolean incrementToken() { return false; }
+ }
+
+ public void testTokenStreams() {
+ new TestAnalyzer1();
+
+ new TestAnalyzer2();
+
+ try {
+ new TestAnalyzer3();
+ fail("TestAnalyzer3 should fail assertion");
+ } catch (AssertionError e) {
+ }
+
+ try {
+ new TestAnalyzer4();
+ fail("TestAnalyzer4 should fail assertion");
+ } catch (AssertionError e) {
+ }
+
+ new TestTokenStream1();
+
+ new TestTokenStream2();
+
+ try {
+ new TestTokenStream3();
+ fail("TestTokenStream3 should fail assertion");
+ } catch (AssertionError e) {
+ }
+ }
+
+}