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.metadata.properties;
  
  import org.apache.kafka.test.TestUtils;
  
  import org.junit.jupiter.api.Test;
  import org.junit.jupiter.params.ParameterizedTest;
  import org.junit.jupiter.params.provider.ValueSource;
  
  import java.io.File;
  import java.io.IOException;
  import java.nio.file.Files;
  import java.util.Properties;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  
  public final class PropertiesUtilsTest {
      @Test
      public void testReadPropertiesFile() throws IOException {
          File tempFile = TestUtils.tempFile();
          try {
              String testContent = "a=1\nb=2\n#a comment\n\nc=3\nd=";
              Files.write(tempFile.toPath(), testContent.getBytes());
              Properties props = PropertiesUtils.readPropertiesFile(tempFile.getAbsolutePath());
              assertEquals(4, props.size());
              assertEquals("1", props.get("a"));
              assertEquals("2", props.get("b"));
              assertEquals("3", props.get("c"));
              assertEquals("", props.get("d"));
          } finally {
              Files.deleteIfExists(tempFile.toPath());
          }
      }
  
      @ParameterizedTest
      @ValueSource(booleans = {false, true})
      public void testWritePropertiesFile(boolean fsync) throws IOException {
          File tempFile = TestUtils.tempFile();
          try {
              Properties props = new Properties();
              props.setProperty("abc", "123");
              props.setProperty("def", "456");
              PropertiesUtils.writePropertiesFile(props, tempFile.getAbsolutePath(), fsync);
              Properties props2 = PropertiesUtils.readPropertiesFile(tempFile.getAbsolutePath());
              assertEquals(props, props2);
          } finally {
              Files.deleteIfExists(tempFile.toPath());
          }
      }
  
      @Test
      public void loadRequiredIntProp() {
          Properties props = new Properties();
          props.setProperty("foo.bar", "123");
          assertEquals(123, PropertiesUtils.loadRequiredIntProp(props, "foo.bar"));
      }
  
      @Test
      public void loadMissingRequiredIntProp() {
          Properties props = new Properties();
          assertEquals("Failed to find foo.bar",
              assertThrows(RuntimeException.class,
                  () -> PropertiesUtils.loadRequiredIntProp(props, "foo.bar")).
                      getMessage());
      }
  
      @Test
      public void loadNonIntegerRequiredIntProp() {
          Properties props = new Properties();
          props.setProperty("foo.bar", "b");
          assertEquals("Unable to read foo.bar as a base-10 number.",
              assertThrows(RuntimeException.class,
                  () -> PropertiesUtils.loadRequiredIntProp(props, "foo.bar")).
                      getMessage());
      }
  }
  