FileWatcherByPathValueTest.java

/*******************************************************************************
 * Copyright (c) 2012-2017 Codenvy, S.A.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *   Codenvy, S.A. - initial API and implementation
 *******************************************************************************/
package org.eclipse.che.api.vfs.watcher;

import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.TemporaryFolder;
import org.junit.runner.RunWith;
import org.mockito.InjectMocks;
import org.mockito.Mock;
import org.mockito.runners.MockitoJUnitRunner;

import java.nio.file.Path;
import java.util.function.Consumer;

import static org.mockito.Matchers.anyInt;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;

/**
 * Tests for {@link FileWatcherByPathValue}
 */
@RunWith(MockitoJUnitRunner.class)
public class FileWatcherByPathValueTest {
    private static final int    OPERATION_ID = 0;
    private static final String FILE_NAME    = "name.ext";

    @Rule
    public TemporaryFolder rootFolder = new TemporaryFolder();

    @Mock
    FileWatcherEventHandler handler;
    @Mock
    FileWatcherService      service;
    @InjectMocks
    FileWatcherByPathValue  watcher;

    @Mock
    Consumer<String> create;
    @Mock
    Consumer<String> modify;
    @Mock
    Consumer<String> delete;

    Path root;

    @Before
    public void setUp() throws Exception {
        root = rootFolder.getRoot().toPath();
    }

    @Test
    public void shouldRegisterInServiceWhenWatchFile() throws Exception {
        Path path = root.resolve(FILE_NAME);

        watcher.watch(path, create, modify, delete);

        verify(service).register(path.getParent());
    }

    @Test
    public void shouldRegisterInServiceWhenWatchDirectory() throws Exception {
        Path path = root.resolve(FILE_NAME);

        watcher.watch(path.getParent(), create, modify, delete);

        verify(service).register(path.getParent());
    }

    @Test
    public void shouldRegisterInHandlerWhenWatch() throws Exception {
        Path path = root.resolve(FILE_NAME);

        watcher.watch(path, create, modify, delete);

        verify(handler).register(path, create, modify, delete);
    }

    @Test
    public void shouldUnRegisterInServiceWhenUnWatch() throws Exception {
        Path path = mock(Path.class);
        when(handler.unRegister(anyInt())).thenReturn(path);

        watcher.unwatch(OPERATION_ID);

        verify(service).unRegister(path);
    }

    @Test
    public void shouldUnRegisterInHandlerWhenUnWatch() throws Exception {
        Path path = mock(Path.class);
        when(handler.unRegister(anyInt())).thenReturn(path);

        watcher.unwatch(OPERATION_ID);

        verify(handler).unRegister(OPERATION_ID);
    }
}