VirtualFileListenerTest.java

/*
 * Copyright 2000-2017 JetBrains s.r.o.
 *
 * Licensed 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
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * 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 com.intellij.openapi.vfs;

import com.intellij.openapi.application.Result;
import com.intellij.openapi.application.WriteAction;
import com.intellij.openapi.util.Ref;
import com.intellij.testFramework.fixtures.BareTestFixtureTestCase;
import com.intellij.testFramework.rules.TempDirectory;
import org.jetbrains.annotations.NotNull;
import org.junit.Rule;
import org.junit.Test;

import java.io.IOException;

import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;

/**
 * @author nik
 */
public class VirtualFileListenerTest extends BareTestFixtureTestCase {
  @Rule public TempDirectory myTempDir = new TempDirectory();

  @Test
  public void testFireEvent() throws IOException {
    VirtualFile dir = LocalFileSystem.getInstance().refreshAndFindFileByIoFile(myTempDir.newFolder("vDir"));
    assertNotNull(dir);
    dir.getChildren();

    Ref<Boolean> eventFired = Ref.create(false);

    VirtualFileManager.getInstance().addVirtualFileListener(new VirtualFileListener() {
      @Override
      public void fileCreated(@NotNull VirtualFileEvent event) {
        eventFired.set(true);
      }
    }, getTestRootDisposable());

    new WriteAction() {
      @Override
      protected void run(@NotNull Result result) throws IOException {
        dir.createChildData(this, "x.txt");
      }
    }.execute();

    assertTrue(eventFired.get());
  }
}