content: /*
   * 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.kafka.message;
  
  import org.junit.jupiter.api.Test;
  import org.junit.jupiter.api.Timeout;
  
  import java.io.StringWriter;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertNotEquals;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  @Timeout(120)
  public class CodeBufferTest {
  
      @Test
      public void testWrite() throws Exception {
          CodeBuffer buffer = new CodeBuffer();
          buffer.printf("public static void main(String[] args) throws Exception {%n");
          buffer.incrementIndent();
          buffer.printf("System.out.println(\"%s\");%n", "hello world");
          buffer.decrementIndent();
          buffer.printf("}%n");
          StringWriter stringWriter = new StringWriter();
          buffer.write(stringWriter);
          assertEquals(
              stringWriter.toString(),
              String.format("public static void main(String[] args) throws Exception {%n") +
              String.format("    System.out.println(\"hello world\");%n") +
              String.format("}%n"));
      }
  
      @Test
      public void testEquals() {
          CodeBuffer buffer1 = new CodeBuffer();
          CodeBuffer buffer2 = new CodeBuffer();
          assertEquals(buffer1, buffer2);
          buffer1.printf("hello world");
          assertNotEquals(buffer1, buffer2);
          buffer2.printf("hello world");
          assertEquals(buffer1, buffer2);
          buffer1.printf("foo, bar, and baz");
          buffer2.printf("foo, bar, and baz");
          assertEquals(buffer1, buffer2);
      }
  
      @Test
      public void testIndentMustBeNonNegative() {
          CodeBuffer buffer = new CodeBuffer();
          buffer.incrementIndent();
          buffer.decrementIndent();
          RuntimeException e = assertThrows(RuntimeException.class, buffer::decrementIndent);
          assertTrue(e.getMessage().contains("Indent < 0"));
      }
  }
  