Content of file AbstractControl_PTest.java

/*******************************************************************************
 * Copyright (c) 2011-2016 EclipseSource Muenchen GmbH and others.
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 * Eugen Neufeld - initial API and implementation
 * Lucas Koehler - adjustments for databinding tests
 ******************************************************************************/
package org.eclipse.emfforms.swt.common.test;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import static org.mockito.Matchers.any;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.reset;
import static org.mockito.Mockito.when;

import java.util.Map;

import org.eclipse.core.databinding.observable.IObserving;
import org.eclipse.core.databinding.observable.Observables;
import org.eclipse.core.databinding.observable.value.IObservableValue;
import org.eclipse.core.databinding.property.value.IValueProperty;
import org.eclipse.emf.common.command.BasicCommandStack;
import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EStructuralFeature;
import org.eclipse.emf.ecore.EStructuralFeature.Setting;
import org.eclipse.emf.ecore.EcorePackage;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.emf.ecore.resource.ResourceSet;
import org.eclipse.emf.ecore.resource.impl.ResourceFactoryImpl;
import org.eclipse.emf.ecore.resource.impl.ResourceSetImpl;
import org.eclipse.emf.ecp.view.spi.context.ViewModelContext;
import org.eclipse.emf.ecp.view.spi.core.swt.AbstractControlSWTRenderer;
import org.eclipse.emf.ecp.view.spi.model.LabelAlignment;
import org.eclipse.emf.ecp.view.spi.model.VControl;
import org.eclipse.emf.ecp.view.spi.model.VDomainModelReference;
import org.eclipse.emf.ecp.view.spi.renderer.NoPropertyDescriptorFoundExeption;
import org.eclipse.emf.ecp.view.spi.renderer.NoRendererFoundException;
import org.eclipse.emf.ecp.view.template.model.VTViewTemplateProvider;
import org.eclipse.emf.edit.domain.AdapterFactoryEditingDomain;
import org.eclipse.emf.edit.provider.ComposedAdapterFactory;
import org.eclipse.emfforms.spi.core.services.databinding.DatabindingFailedException;
import org.eclipse.emfforms.spi.core.services.databinding.EMFFormsDatabinding;
import org.eclipse.emfforms.spi.core.services.label.EMFFormsLabelProvider;
import org.eclipse.emfforms.spi.core.services.label.NoLabelFoundException;
import org.eclipse.emfforms.spi.swt.core.layout.GridDescriptionFactory;
import org.eclipse.emfforms.spi.swt.core.layout.SWTGridCell;
import org.eclipse.emfforms.spi.swt.core.layout.SWTGridDescription;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.junit.Test;
import org.mockito.Mockito;

public abstract class AbstractControl_PTest<C extends VControl> {

	protected static final String CUSTOM_VARIANT = "org.eclipse.rap.rwt.customVariant"; //$NON-NLS-1$

	protected static final String UUID = "org.eclipse.emfforms.swt.common.test.AbstractControl_PTest.UUID";

	private EMFFormsDatabinding databindingService;
	private VTViewTemplateProvider templateProvider;
	private AbstractControlSWTRenderer<C> renderer;
	private EMFFormsLabelProvider labelProvider;

	private EObject eObject;

	protected Resource createResource() {
		final Resource.Factory.Registry registry = Resource.Factory.Registry.INSTANCE;
		final Map<String, Object> extToFactoryMap = registry
			.getExtensionToFactoryMap();
		extToFactoryMap.put(Resource.Factory.Registry.DEFAULT_EXTENSION,
			new ResourceFactoryImpl());
		final ResourceSet resourceSet = new ResourceSetImpl();
		resourceSet.getPackageRegistry().put(EcorePackage.eNS_URI,
			EcorePackage.eINSTANCE);

		final AdapterFactoryEditingDomain domain = new AdapterFactoryEditingDomain(
			new ComposedAdapterFactory(
				ComposedAdapterFactory.Descriptor.Registry.INSTANCE),
			new BasicCommandStack(), resourceSet);
		resourceSet.eAdapters().add(
			new AdapterFactoryEditingDomain.EditingDomainProvider(domain));
		final Resource resource = resourceSet
			.createResource(URI.createURI("VIRTUAL"));
		return resource;

	}

	protected void mockControl(EObject eObject,
		final EStructuralFeature eStructuralFeature) throws DatabindingFailedException {
		this.eObject = eObject;
		final VDomainModelReference domainModelReference = Mockito
			.mock(VDomainModelReference.class);
		final Setting setting = mock(Setting.class);
		final Resource resource = createResource();
		resource.getContents().add(eObject);

		when(setting.getEObject()).thenReturn(eObject);
		when(setting.getEStructuralFeature()).thenReturn(eStructuralFeature);

		mockDatabindingIsSettableAndChangeable();

		Mockito.when(getvControl().getDomainModelReference()).thenReturn(
			domainModelReference);

		Mockito.doReturn(UUID).when(getvControl()).getUuid();
	}

	protected void mockDatabindingIsSettableAndChangeable() throws DatabindingFailedException {
		final EStructuralFeature structuralFeature = mock(EStructuralFeature.class);
		when(structuralFeature.isUnsettable()).thenReturn(false);
		when(structuralFeature.isChangeable()).thenReturn(true);
		final IValueProperty valueProperty = mock(IValueProperty.class);
		when(valueProperty.getValueType()).thenReturn(structuralFeature);
		when(getDatabindingService().getValueProperty(any(VDomainModelReference.class), any(EObject.class))).thenReturn(
			valueProperty);
	}

	protected void setMockLabelAlignment(LabelAlignment labelAlignment) {
		Mockito.when(getvControl().getLabelAlignment()).thenReturn(labelAlignment);
	}

	private ViewModelContext context;
	private C vControl;
	private Shell shell;

	@SuppressWarnings("unchecked")
	protected void setup() throws DatabindingFailedException {
		setvControl((C) Mockito.mock(VControl.class));
		mockControl();
		setContext(Mockito.mock(ViewModelContext.class));
		when(getContext().getDomainModel()).thenReturn(eObject);
		setShell(new Shell(Display.getDefault(), SWT.NONE));
	}

	protected void dispose() {
		getShell().dispose();
	}

	@Test
	public void testGridDescriptionLabelAlignmentNone() {
		setMockLabelAlignment(LabelAlignment.NONE);
		final SWTGridDescription gridDescription = getRenderer().getGridDescription(GridDescriptionFactory.INSTANCE
			.createEmptyGridDescription());
		assertEquals(2, gridDescription.getColumns());
		assertEquals(1, gridDescription.getRows());
	}

	@Test
	public void testGridDescriptionLabelAlignmentLeft() {
		setMockLabelAlignment(LabelAlignment.LEFT);
		final SWTGridDescription gridDescription = getRenderer().getGridDescription(GridDescriptionFactory.INSTANCE
			.createEmptyGridDescription());
		assertEquals(3, gridDescription.getColumns());
		assertEquals(1, gridDescription.getRows());
	}

	@Test
	public void renderValidationIconLabelAlignmentNone()
		throws NoRendererFoundException, NoPropertyDescriptorFoundExeption {
		setMockLabelAlignment(LabelAlignment.NONE);
		renderValidationIcon(new SWTGridCell(0, 0, getRenderer()));
	}

	@Test
	public void renderValidationIconLabelAlignmentLeft()
		throws NoRendererFoundException, NoPropertyDescriptorFoundExeption {
		setMockLabelAlignment(LabelAlignment.LEFT);
		renderValidationIcon(new SWTGridCell(0, 1, getRenderer()));
	}

	private void renderValidationIcon(SWTGridCell gridCell)
		throws NoRendererFoundException, NoPropertyDescriptorFoundExeption {
		final Control render = getRenderer().render(gridCell, getShell());
		assertTrue(Label.class.isInstance(render));
		assertEquals("", Label.class.cast(render).getText());
	}

	protected void renderLabel(String text) throws NoRendererFoundException,
		NoPropertyDescriptorFoundExeption {
		setMockLabelAlignment(LabelAlignment.LEFT);
		final Control render = getRenderer().render(new SWTGridCell(0, 0, getRenderer()), getShell());
		assertTrue(Label.class.isInstance(render));
		assertEquals(text, Label.class.cast(render).getText());
	}

	/**
	 * Tests whether the {@link EMFFormsLabelProvider} is used to get the labels of a control.
	 *
	 * @throws NoRendererFoundException
	 * @throws NoPropertyDescriptorFoundExeption
	 * @throws NoLabelFoundException
	 */
	protected void labelServiceUsage() throws NoRendererFoundException, NoPropertyDescriptorFoundExeption,
		NoLabelFoundException {
		reset(getLabelProvider());
		final IObservableValue testDescription = Observables.constantObservableValue("test-description", String.class);
		final IObservableValue testDisplayName = Observables.constantObservableValue("test-displayname", String.class);
		when(getLabelProvider().getDescription(any(VDomainModelReference.class), any(EObject.class))).thenReturn(
			testDescription);
		when(getLabelProvider().getDisplayName(any(VDomainModelReference.class), any(EObject.class))).thenReturn(
			testDisplayName);

		setMockLabelAlignment(LabelAlignment.LEFT);
		final Control renderControl = renderControl(new SWTGridCell(0, 0, getRenderer()));
		assertTrue(Label.class.isInstance(renderControl));

		final Label label = (Label) renderControl;
		assertEquals(testDescription.getValue(), label.getToolTipText());
		assertEquals(testDisplayName.getValue(), label.getText());
	}

	protected Control renderControl(SWTGridCell gridCell)
		throws NoRendererFoundException, NoPropertyDescriptorFoundExeption {
		final Control render = getRenderer().render(gridCell, getShell());
		return render;
	}

	protected abstract void mockControl() throws DatabindingFailedException;

	/**
	 * @return the context
	 */
	public ViewModelContext getContext() {
		return context;
	}

	/**
	 * @param context the context to set
	 */
	public void setContext(ViewModelContext context) {
		this.context = context;
	}

	/**
	 * @return the VControl
	 */
	public C getvControl() {
		return vControl;
	}

	/**
	 * @param vControl the VControl to set
	 */
	public void setvControl(C vControl) {
		this.vControl = vControl;
	}

	/**
	 * @return the shell
	 */
	public Shell getShell() {
		return shell;
	}

	/**
	 * @param shell the shell to set
	 */
	public void setShell(Shell shell) {
		this.shell = shell;
	}

	/**
	 * @return the databindingService
	 */
	public EMFFormsDatabinding getDatabindingService() {
		return databindingService;
	}

	/**
	 * @param databindingService the databindingService to set
	 */
	public void setDatabindingService(EMFFormsDatabinding databindingService) {
		this.databindingService = databindingService;
	}

	/**
	 * @return the templateProvider
	 */
	public VTViewTemplateProvider getTemplateProvider() {
		return templateProvider;
	}

	/**
	 * @param templateProvider the templateProvider to set
	 */
	public void setTemplateProvider(VTViewTemplateProvider templateProvider) {
		this.templateProvider = templateProvider;
	}

	/**
	 * @return the renderer
	 */
	public AbstractControlSWTRenderer<C> getRenderer() {
		return renderer;
	}

	/**
	 * @param renderer the renderer to set
	 */
	public void setRenderer(AbstractControlSWTRenderer<C> renderer) {
		this.renderer = renderer;
	}

	/**
	 * @return the labelProvider
	 */
	public EMFFormsLabelProvider getLabelProvider() {
		return labelProvider;
	}

	/**
	 * @param labelProvider the labelProvider to set
	 */
	public void setLabelProvider(EMFFormsLabelProvider labelProvider) {
		this.labelProvider = labelProvider;
	}

	/**
	 * Helper Interface for mocking.
	 *
	 * @author Eugen Neufeld
	 *
	 */
	public interface TestObservableValue extends IObservableValue, IObserving {
	}
}