FormItemIconTest.java

package org.vaadin.smartgwt.server.form.fields;

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

import java.util.Map;

import org.junit.Before;
import org.junit.Test;
import org.mockito.ArgumentCaptor;
import org.vaadin.smartgwt.server.form.DynamicForm;
import org.vaadin.smartgwt.server.form.fields.events.FormItemClickHandler;
import org.vaadin.smartgwt.server.form.fields.events.FormItemIconClickEvent;

import com.google.common.collect.Maps;
import com.google.web.bindery.event.shared.HandlerRegistration;
import com.vaadin.terminal.PaintException;
import com.vaadin.terminal.PaintTarget;
import com.vaadin.terminal.gwt.server.JsonPaintTarget;

public class FormItemIconTest {
	private FormItemIcon formItemIcon;

	@Before
	public void before() {
		formItemIcon = new FormItemIcon();
	}

	@Test
	public void test_canAddFormItemIconClickHandler() {
		final FormItemClickHandler handler = mock(FormItemClickHandler.class);
		formItemIcon.addFormItemClickHandler(handler);
		assertTrue(formItemIcon.getFormItemClickHandlers().contains(handler));
	}

	@Test
	public void test_canRemoveFormItemClickHandlerWithHandlerRegistration() {
		final FormItemClickHandler handler = mock(FormItemClickHandler.class);
		final HandlerRegistration registration = formItemIcon.addFormItemClickHandler(handler);
		registration.removeHandler();
		assertFalse(formItemIcon.getFormItemClickHandlers().contains(handler));
	}

	@Test
	public void test_paintHasFormItemClickHandlersAttributeWhenHandlersAreRegistered() throws PaintException {
		formItemIcon.addFormItemClickHandler(mock(FormItemClickHandler.class));
		final PaintTarget paintTarget = mock(JsonPaintTarget.class);
		formItemIcon.paintContent(paintTarget);
		verify(paintTarget).addAttribute("*hasFormItemClickHandlers", true);
	}

	@Test
	public void test_dontPaintHasFormItemClickHandlersAttributeWhenNoHandlerRegistered() throws PaintException {
		final PaintTarget paintTarget = mock(JsonPaintTarget.class);
		formItemIcon.paintContent(paintTarget);
		verify(paintTarget, never()).addAttribute(eq("*hasFormItemClickHandlers"), anyBoolean());
	}

	@Test
	public void test_firesEventFromChangedVariables() {
		final FormItemClickHandler handler = mock(FormItemClickHandler.class);
		formItemIcon.addFormItemClickHandler(handler);

		final Map<String, Object> variables = Maps.newHashMap();
		variables.put("formItemIconClickEvent.form", mock(DynamicForm.class));
		variables.put("formItemIconClickEvent.item", mock(FormItem.class));
		variables.put("formItemIconClickEvent.icon", mock(FormItemIcon.class));

		formItemIcon.changeVariables(null, variables);

		final ArgumentCaptor<FormItemIconClickEvent> captor = ArgumentCaptor.forClass(FormItemIconClickEvent.class);
		verify(handler).onFormItemClick(captor.capture());
		assertEquals(variables.get("formItemIconClickEvent.form"), captor.getValue().getForm());
		assertEquals(variables.get("formItemIconClickEvent.item"), captor.getValue().getItem());
		assertEquals(variables.get("formItemIconClickEvent.icon"), captor.getValue().getIcon());
	}

	@Test
	public void test_noEventFiredWhenNoEventInChangedVariable() {
		final FormItemClickHandler handler = mock(FormItemClickHandler.class);
		formItemIcon.addFormItemClickHandler(handler);

		final Map<String, Object> variables = Maps.newHashMap();
		variables.put("something", 1);

		formItemIcon.changeVariables(null, variables);
		verify(handler, never()).onFormItemClick(any(FormItemIconClickEvent.class));
	}
}