AbstractClientSessionTest.java

/*
 * Copyright 2016 Red Hat, Inc. and/or its affiliates.
 * 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 org.kie.workbench.common.stunner.core.client.session.impl;

import com.google.gwtmockito.GwtMockitoTestRunner;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.kie.workbench.common.stunner.core.client.canvas.AbstractCanvas;
import org.kie.workbench.common.stunner.core.client.canvas.AbstractCanvasHandler;
import org.mockito.Mock;

import static org.junit.Assert.*;
import static org.mockito.Mockito.*;

@RunWith(GwtMockitoTestRunner.class)
public class AbstractClientSessionTest {

    @Mock
    AbstractCanvas canvas;
    @Mock
    AbstractCanvasHandler canvasHandler;

    private AbstractClientSession tested;

    @Before
    public void setup() throws Exception {
        when(canvasHandler.getCanvas()).thenReturn(canvas);
        this.tested = spy(new AbstractClientSessionStub(canvas,
                                                        canvasHandler));
    }

    @Test
    public void testOpen() {
        tested.open();
        assertTrue(tested.isOpened());
        verify(tested,
               times(1)).doOpen();
        verify(tested,
               times(0)).doPause();
        verify(tested,
               times(0)).doResume();
        verify(tested,
               times(0)).doDestroy();
    }

    @Test
    public void testPause() {
        tested.isOpened = true;
        tested.pause();
        assertTrue(tested.isOpened());
        verify(tested,
               times(0)).doOpen();
        verify(tested,
               times(1)).doPause();
        verify(tested,
               times(0)).doResume();
        verify(tested,
               times(0)).doDestroy();
    }

    @Test(expected = java.lang.IllegalStateException.class)
    public void testCannotPause() {
        tested.isOpened = false;
        tested.pause();
    }

    @Test
    public void testResume() {
        tested.isOpened = true;
        tested.resume();
        assertTrue(tested.isOpened());
        verify(tested,
               times(0)).doOpen();
        verify(tested,
               times(0)).doPause();
        verify(tested,
               times(1)).doResume();
        verify(tested,
               times(0)).doDestroy();
    }

    @Test
    public void testCannotResume() {
        tested.isOpened = false;
        tested.resume();
        verify(tested,
               times(0)).doOpen();
        verify(tested,
               times(0)).doPause();
        verify(tested,
               times(0)).doResume();
        verify(tested,
               times(0)).doDestroy();
    }

    @Test
    public void testDestroy() {
        tested.isOpened = true;
        tested.destroy();
        assertFalse(tested.isOpened());
        verify(tested,
               times(0)).doOpen();
        verify(tested,
               times(0)).doPause();
        verify(tested,
               times(0)).doResume();
        verify(tested,
               times(1)).doDestroy();
        verify(canvasHandler,
               times(1)).destroy();
    }

    @Test(expected = java.lang.IllegalStateException.class)
    public void testCannotDestroy() {
        tested.isOpened = false;
        tested.destroy();
    }

    private class AbstractClientSessionStub extends AbstractClientSession {

        @SuppressWarnings("unchecked")
        AbstractClientSessionStub(AbstractCanvas canvas,
                                  AbstractCanvasHandler canvasHandler) {
            super(canvas,
                  canvasHandler);
        }

        @Override
        protected void doOpen() {
        }

        @Override
        protected void doPause() {
        }

        @Override
        protected void doResume() {
        }

        @Override
        protected void doDestroy() {
        }
    }
}