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test/org/apache/tomcat/websocket/TestWsSession.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.websocket;
+
+import java.nio.ByteBuffer;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+public class TestWsSession {
+
+    @Test
+    public void testAppendCloseReasonWithTruncation01() {
+        doTestAppendCloseReasonWithTruncation(100);
+    }
+
+
+    @Test
+    public void testAppendCloseReasonWithTruncation02() {
+        doTestAppendCloseReasonWithTruncation(119);
+    }
+
+
+    @Test
+    public void testAppendCloseReasonWithTruncation03() {
+        doTestAppendCloseReasonWithTruncation(120);
+    }
+
+
+    @Test
+    public void testAppendCloseReasonWithTruncation04() {
+        doTestAppendCloseReasonWithTruncation(121);
+    }
+
+
+    @Test
+    public void testAppendCloseReasonWithTruncation05() {
+        doTestAppendCloseReasonWithTruncation(122);
+    }
+
+
+    @Test
+    public void testAppendCloseReasonWithTruncation06() {
+        doTestAppendCloseReasonWithTruncation(123);
+    }
+
+
+    @Test
+    public void testAppendCloseReasonWithTruncation07() {
+        doTestAppendCloseReasonWithTruncation(124);
+    }
+
+
+    @Test
+    public void testAppendCloseReasonWithTruncation08() {
+        doTestAppendCloseReasonWithTruncation(125);
+    }
+
+
+    @Test
+    public void testAppendCloseReasonWithTruncation09() {
+        doTestAppendCloseReasonWithTruncation(150);
+    }
+
+
+    private void doTestAppendCloseReasonWithTruncation(int reasonLength) {
+        StringBuilder reason = new StringBuilder(reasonLength);
+        for (int i = 0; i < reasonLength; i++) {
+            reason.append('a');
+        }
+
+        ByteBuffer buf = ByteBuffer.allocate(256);
+
+        WsSession.appendCloseReasonWithTruncation(buf, reason.toString());
+
+        // Check the position and contents
+        if (reasonLength <= 123) {
+            Assert.assertEquals(reasonLength, buf.position());
+            for (int i = 0; i < reasonLength; i++) {
+                Assert.assertEquals('a', buf.get(i));
+            }
+        } else {
+            // Must have been truncated
+            Assert.assertEquals(123, buf.position());
+            for (int i = 0; i < 120; i++) {
+                Assert.assertEquals('a', buf.get(i));
+            }
+            Assert.assertEquals(0xE2, buf.get(120) & 0xFF);
+            Assert.assertEquals(0x80, buf.get(121) & 0xFF);
+            Assert.assertEquals(0xA6, buf.get(122) & 0xFF);
+        }
+    }
+}