code: package com.beijunyi.parallelgit.filesystem;
  
  import java.io.IOException;
  import java.nio.file.attribute.BasicFileAttributeView;
  import java.nio.file.attribute.PosixFileAttributeView;
  
  import org.junit.Test;
  
  import static org.junit.Assert.*;
  
  public class GfsFileStoreFileAttributeViewTest extends PreSetupGitFileSystemTest {
  
    @Test
    public void supportsBasicFileAttributeView_shouldReturnTrue() {
      assertTrue(fileStore.supportsFileAttributeView(BasicFileAttributeView.class));
      assertTrue(fileStore.supportsFileAttributeView("basic"));
    }
  
    @Test
    public void supportsPosixFileAttributeView_shouldReturnTrue() {
      assertTrue(fileStore.supportsFileAttributeView(PosixFileAttributeView.class));
      assertTrue(fileStore.supportsFileAttributeView("posix"));
    }
  
    @Test
    public void supportsUnsupportedFileAttributeView_shouldReturnFalse() {
      assertFalse(fileStore.supportsFileAttributeView("unsupported_view"));
    }
  
    @Test(expected = UnsupportedOperationException.class)
    public void fileStoreGetUnsupportedAttributeTest() throws IOException {
      fileStore.getAttribute("unsupported_attribute");
    }
  
  }
  