/*
    * Copyright 2016-2022 The OSHI Project Contributors
    * SPDX-License-Identifier: MIT
    */
   package oshi.software.os;
   
   import org.junit.jupiter.api.Test;
   import oshi.PlatformEnum;
   import oshi.SystemInfo;
  
  import static org.hamcrest.MatcherAssert.assertThat;
  import static org.hamcrest.Matchers.is;
  import static org.hamcrest.Matchers.notNullValue;
  import static org.hamcrest.Matchers.greaterThanOrEqualTo;
  
  /**
   * Test File System
   */
  class FileSystemTest {
  
      /**
       * Test file system.
       *
       */
      @Test
      void testFileSystem() {
          SystemInfo si = new SystemInfo();
          FileSystem filesystem = si.getOperatingSystem().getFileSystem();
          assertThat("File system open file descriptors should be 0 or higher", filesystem.getOpenFileDescriptors(),
                  greaterThanOrEqualTo(0L));
          assertThat("File system max open file descriptors should be 0 or higher", filesystem.getMaxFileDescriptors(),
                  greaterThanOrEqualTo(0L));
          assertThat("File system max open file descriptors per process should be 0 or higher",
                  filesystem.getMaxFileDescriptorsPerProcess(), greaterThanOrEqualTo(0L));
          filesystem.getMaxFileDescriptorsPerProcess();
          for (OSFileStore store : filesystem.getFileStores()) {
              assertThat("File store name shouldn't be null", store.getName(), is(notNullValue()));
              assertThat("File store volume shouldn't be null", store.getVolume(), is(notNullValue()));
              assertThat("File store label shouldn't be null", store.getLabel(), is(notNullValue()));
              assertThat("File store logical volume shouldn't be null", store.getLogicalVolume(), is(notNullValue()));
              assertThat("File store description shouldn't be null", store.getDescription(), is(notNullValue()));
              assertThat("File store type shouldn't be null", store.getType(), is(notNullValue()));
              assertThat("File store options shouldn't be empty", store.getOptions().isEmpty(), is(false));
              assertThat("File store mount shouldn't be null", store.getMount(), is(notNullValue()));
              assertThat("File store UUID shouldn't be null", store.getUUID(), is(notNullValue()));
              assertThat("File store total space should be 0 or higher", store.getTotalSpace() >= 0, is(true));
              assertThat("File store usable space should be 0 or higher", store.getUsableSpace() >= 0, is(true));
              assertThat("File store free space should be 0 or higher", store.getFreeSpace() >= 0, is(true));
              if (SystemInfo.getCurrentPlatform() != PlatformEnum.WINDOWS) {
                  assertThat("Number of free inodes should be 0 or higher on non-Windows systems",
                          store.getFreeInodes() >= 0, is(true));
                  if (SystemInfo.getCurrentPlatform() != PlatformEnum.SOLARIS) {
                      assertThat(
                              "Total number of inodes should be greater than or equal to number of free inodes on non-Windows/Solaris systems",
                              store.getTotalInodes() >= store.getFreeInodes(), is(true));
                  }
              }
              if (!store.getDescription().equals("Network drive")) {
                  assertThat(
                          "File store's usable space should be less than or equal to the total space on non-network drives",
                          store.getUsableSpace() <= store.getTotalSpace(), is(true));
              }
          }
      }
  }