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
   * <p>
   * http://www.apache.org/licenses/LICENSE-2.0
   * <p>
   * 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.atlas.utils;
  
  import org.apache.atlas.type.AtlasType;
  import org.apache.commons.io.FileUtils;
  import org.apache.commons.lang.StringUtils;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import java.io.File;
  import java.io.FileInputStream;
  import java.io.FileNotFoundException;
  import java.io.IOException;
  
  public class TestResourceFileUtils {
      private static final Logger LOG = LoggerFactory.getLogger(TestResourceFileUtils.class);
  
      private TestResourceFileUtils() {
          // to block instantiation
      }
  
      public static String getTestFilePath(String fileName) {
          final String userDir  = System.getProperty("user.dir");
  
          return getTestFilePath(userDir, "", fileName);
      }
  
      public static FileInputStream getFileInputStream(String fileName) {
          return getFileInputStream("", fileName);
      }
  
      public static FileInputStream getFileInputStream(String subDir, String fileName) {
          final String    userDir  = System.getProperty("user.dir");
          String          filePath = getTestFilePath(userDir, subDir, fileName);
          File            f        = new File(filePath);
          FileInputStream fs       = null;
  
          try {
              fs = new FileInputStream(f);
          } catch (FileNotFoundException e) {
              LOG.error("File could not be found at: {}", filePath, e);
          }
  
          return fs;
      }
  
      public static String getDirectory(String subDir) {
          final String userDir = System.getProperty("user.dir");
  
          return getTestFilePath(userDir, subDir, "");
      }
  
      public static <T> T readObjectFromJson(String subDir, String filename, Class<T> objectClass) throws IOException {
          final String userDir  = System.getProperty("user.dir");
          String       filePath = getTestJsonPath(userDir, subDir, filename);
          String       json     = FileUtils.readFileToString(new File(filePath));
  
          return AtlasType.fromJson(json, objectClass);
      }
  
      public static <T> T readObjectFromJson(String filename, Class<T> objectClass) throws IOException {
          return readObjectFromJson("", filename, objectClass);
      }
  
      public static String getJson(String subDir, String filename) throws IOException {
          final String userDir  = System.getProperty("user.dir");
          String       filePath = getTestJsonPath(userDir, subDir, filename);
  
          return FileUtils.readFileToString(new File(filePath));
      }
  
      public static String getJson(String filename) throws IOException {
          return getJson("", filename);
      }
  
      private static String getTestFilePath(String startPath, String subDir, String fileName) {
          if (StringUtils.isNotEmpty(subDir)) {
              return startPath + "/src/test/resources/" + subDir + "/" + fileName;
          } else {
              return startPath + "/src/test/resources/" + fileName;
          }
      }
  
      private static String getTestJsonPath(String startPath, String subDir, String fileName) {
          return startPath + "/src/test/resources/json/" + subDir + "/" + fileName + ".json";
      }
  }
  