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test/org/apache/tomcat/util/buf/TestCharChunk.java

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+/*
+ *  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.
+ */
+package org.apache.tomcat.util.buf;
+
+import java.io.IOException;
+
+import org.junit.Assert;
+import org.junit.Ignore;
+import org.junit.Test;
+
+import org.apache.tomcat.util.buf.CharChunk.CharOutputChannel;
+
+/**
+ * Test cases for {@link CharChunk}.
+ */
+public class TestCharChunk {
+
+    @Test
+    public void testEndsWith() {
+        CharChunk cc = new CharChunk();
+        Assert.assertFalse(cc.endsWith("test"));
+        cc.setChars("xxtestxx".toCharArray(), 2, 4);
+        Assert.assertTrue(cc.endsWith(""));
+        Assert.assertTrue(cc.endsWith("t"));
+        Assert.assertTrue(cc.endsWith("st"));
+        Assert.assertTrue(cc.endsWith("test"));
+        Assert.assertFalse(cc.endsWith("x"));
+        Assert.assertFalse(cc.endsWith("xxtest"));
+    }
+
+
+    @Test
+    public void testIndexOf_String() {
+        char[] chars = "Hello\u00a0world".toCharArray();
+        final int len = chars.length;
+
+        CharChunk cc = new CharChunk();
+        cc.setChars(chars, 0, len);
+
+        Assert.assertEquals(0, cc.indexOf("Hello", 0, "Hello".length(), 0));
+        Assert.assertEquals(2, cc.indexOf("ll", 0, 2, 0));
+        Assert.assertEquals(2, cc.indexOf("Hello", 2, 2, 0));
+
+        Assert.assertEquals(7, cc.indexOf("o", 0, 1, 5));
+
+        // Does work outside of 0-127 (unlike ByteChunk)
+        Assert.assertEquals(5, cc.indexOf("\u00a0", 0, 1, 0));
+
+        cc.setChars(chars, 6, 5);
+        Assert.assertEquals(1, cc.indexOf("o", 0, 1, 0));
+
+        cc.setChars(chars, 6, 2);
+        Assert.assertEquals(0, cc.indexOf("wo", 0, 1, 0));
+        Assert.assertEquals(-1, cc.indexOf("d", 0, 1, 0));
+    }
+
+
+    @Ignore // Requires an 11GB heap (on markt's desktop - YMMV)
+    @Test
+    public void testAppend() throws Exception {
+        CharChunk cc = new CharChunk();
+        cc.setCharOutputChannel(new Sink());
+        // Defaults to no limit
+
+        char data[] = new char[32 * 1024 * 1024];
+
+        for (int i = 0; i < 100; i++) {
+            cc.append(data, 0, data.length);
+        }
+
+        Assert.assertEquals(AbstractChunk.ARRAY_MAX_SIZE, cc.getBuffer().length);
+    }
+
+
+    public class Sink implements CharOutputChannel {
+
+        @Override
+        public void realWriteChars(char[] cbuf, int off, int len) throws IOException {
+            // NO-OP
+        }
+    }
+}