code: package com.beijunyi.parallelgit.filesystem;
  
  import java.io.IOException;
  
  import org.junit.Test;
  
  import static junit.framework.TestCase.assertEquals;
  
  public class GfsFileStoreSpaceTest extends PreSetupGitFileSystemTest {
  
    @Test
    public void getTotalSpace_shouldReturnZero() throws IOException {
      assertEquals(0L, fileStore.getTotalSpace());
      assertEquals(0L, fileStore.getAttribute("totalSpace"));
    }
  
    @Test
    public void getUnallocatedSpace_shouldReturnZero() throws IOException {
      assertEquals(0L, fileStore.getUnallocatedSpace());
      assertEquals(0L, fileStore.getAttribute("unallocatedSpace"));
    }
  
    @Test
    public void getUsableSpace_shouldReturnTheAmountOfFreeMemory() throws IOException {
      assertEquals(0L, fileStore.getUsableSpace());
      assertEquals(0L, fileStore.getAttribute("usableSpace"));
    }
  
  
  }
  