public void testFileCaseChange() throws Exception {
    if (SystemInfo.isFileSystemCaseSensitive) {
      System.err.println("Ignored: case-insensitive FS required");
      return;
    }

    File top = createTempDirectory(false);
    File file = IoTestUtil.createTestFile(top, "file.txt", "test");
    File intermediate = new File(top, "_intermediate_");

    LocalFileSystem lfs = LocalFileSystem.getInstance();
    VirtualFile topDir = lfs.refreshAndFindFileByIoFile(top);
    assertNotNull(topDir);
    VirtualFile sourceFile = lfs.refreshAndFindFileByIoFile(file);
    assertNotNull(sourceFile);

    String newName = StringUtil.capitalize(file.getName());
    FileUtil.rename(file, intermediate);
    FileUtil.rename(intermediate, new File(top, newName));
    topDir.refresh(false, true);
    assertFalse(((VirtualDirectoryImpl) topDir).allChildrenLoaded());
    assertTrue(sourceFile.isValid());
    assertEquals(newName, sourceFile.getName());

    topDir.getChildren();
    newName = newName.toLowerCase();
    FileUtil.rename(file, intermediate);
    FileUtil.rename(intermediate, new File(top, newName));
    topDir.refresh(false, true);
    assertTrue(((VirtualDirectoryImpl) topDir).allChildrenLoaded());
    assertTrue(sourceFile.isValid());
    assertEquals(newName, sourceFile.getName());
  }
  public static void doTestPartialRefresh(@NotNull File top) throws IOException {
    File sub = IoTestUtil.createTestDir(top, "sub");
    File file = IoTestUtil.createTestFile(top, "sub.txt");
    LocalFileSystem lfs = LocalFileSystem.getInstance();
    NewVirtualFile topDir = (NewVirtualFile) lfs.refreshAndFindFileByIoFile(top);
    assertNotNull(topDir);
    NewVirtualFile subDir = (NewVirtualFile) lfs.refreshAndFindFileByIoFile(sub);
    assertNotNull(subDir);
    NewVirtualFile subFile = (NewVirtualFile) lfs.refreshAndFindFileByIoFile(file);
    assertNotNull(subFile);
    topDir.refresh(false, true);
    assertFalse(topDir.isDirty());
    assertFalse(subDir.isDirty());
    assertFalse(subFile.isDirty());

    subFile.markDirty();
    subDir.markDirty();
    assertTrue(topDir.isDirty());
    assertTrue(subFile.isDirty());
    assertTrue(subDir.isDirty());

    topDir.refresh(false, false);
    assertFalse(subFile.isDirty());
    assertTrue(subDir.isDirty()); // should stay unvisited after non-recursive refresh

    topDir.refresh(false, true);
    assertFalse(topDir.isDirty());
    assertFalse(subFile.isDirty());
    assertFalse(subDir.isDirty());
  }
  public void testCopyToPointDir() throws Exception {
    File top = createTempDirectory(false);
    File sub = IoTestUtil.createTestDir(top, "sub");
    File file = IoTestUtil.createTestFile(top, "file.txt", "hi there");

    LocalFileSystem lfs = LocalFileSystem.getInstance();
    VirtualFile topDir = lfs.refreshAndFindFileByIoFile(top);
    assertNotNull(topDir);
    VirtualFile sourceFile = lfs.refreshAndFindFileByIoFile(file);
    assertNotNull(sourceFile);
    VirtualFile parentDir = lfs.refreshAndFindFileByIoFile(sub);
    assertNotNull(parentDir);
    assertEquals(2, topDir.getChildren().length);

    try {
      sourceFile.copy(this, parentDir, ".");
      fail("Copying a file into a '.' path should have failed");
    } catch (IOException e) {
      System.out.println(e.getMessage());
    }

    topDir.refresh(false, true);
    assertTrue(topDir.exists());
    assertEquals(2, topDir.getChildren().length);
  }
  public static void doTestInterruptedRefresh(@NotNull File top) throws Exception {
    File sub = IoTestUtil.createTestDir(top, "sub");
    File subSub = IoTestUtil.createTestDir(sub, "sub_sub");
    File file1 = IoTestUtil.createTestFile(sub, "sub_file_to_stop_at");
    File file2 = IoTestUtil.createTestFile(subSub, "sub_sub_file");
    LocalFileSystem lfs = LocalFileSystem.getInstance();
    NewVirtualFile topDir = (NewVirtualFile) lfs.refreshAndFindFileByIoFile(top);
    assertNotNull(topDir);
    NewVirtualFile subFile1 = (NewVirtualFile) lfs.refreshAndFindFileByIoFile(file1);
    assertNotNull(subFile1);
    NewVirtualFile subFile2 = (NewVirtualFile) lfs.refreshAndFindFileByIoFile(file2);
    assertNotNull(subFile2);
    topDir.refresh(false, true);
    assertFalse(topDir.isDirty());
    assertFalse(subFile1.isDirty());
    assertFalse(subFile2.isDirty());

    try {
      subFile1.markDirty();
      subFile2.markDirty();
      RefreshWorker.setCancellingCondition(
          new Function<VirtualFile, Boolean>() {
            @Override
            public Boolean fun(VirtualFile file) {
              return "sub_file_to_stop_at".equals(file.getName());
            }
          });
      topDir.refresh(false, true);
      // should remain dirty after aborted refresh
      assertTrue(subFile1.isDirty());
      assertTrue(subFile2.isDirty());

      RefreshWorker.setCancellingCondition(null);
      topDir.refresh(false, true);
      assertFalse(topDir.isDirty());
      assertFalse(subFile1.isDirty());
      assertFalse(subFile2.isDirty());
    } finally {
      RefreshWorker.setCancellingCondition(null);
    }
  }
  public void testSymlinkTargetBlink() throws Exception {
    if (!SystemInfo.areSymLinksSupported) {
      System.err.println("Ignored: symlinks not supported");
      return;
    }

    File top = createTempDirectory(true);
    File target = IoTestUtil.createTestDir(top, "target");
    File link = IoTestUtil.createSymLink(target.getPath(), top.getPath() + "/link");

    LocalFileSystem lfs = LocalFileSystem.getInstance();
    VirtualFile vTop = lfs.refreshAndFindFileByIoFile(top);
    assertNotNull(vTop);
    assertTrue(vTop.isValid());
    VirtualFile vTarget = lfs.refreshAndFindFileByIoFile(target);
    assertNotNull(vTarget);
    assertTrue(vTarget.isValid());
    VirtualFile vLink = lfs.refreshAndFindFileByIoFile(link);
    assertNotNull(vLink);
    assertTrue(vLink.isValid());
    assertTrue(vLink.isDirectory());

    FileUtil.delete(target);
    vTop.refresh(false, true);
    assertFalse(vTarget.isValid());
    assertFalse(vLink.isValid());
    vLink = lfs.refreshAndFindFileByIoFile(link);
    assertNotNull(vLink);
    assertTrue(vLink.isValid());
    assertFalse(vLink.isDirectory());

    FileUtil.createDirectory(target);
    vTop.refresh(false, true);
    assertFalse(vLink.isValid());
    vLink = lfs.refreshAndFindFileByIoFile(link);
    assertNotNull(vLink);
    assertTrue(vLink.isValid());
    assertTrue(vLink.isDirectory());
  }