package com.vaadin.v7.data.fieldgroup;

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

import java.lang.reflect.Constructor;
import java.util.Date;

import org.junit.Before;
import org.junit.Test;

import com.vaadin.v7.ui.AbstractSelect;
import com.vaadin.v7.ui.ComboBox;
import com.vaadin.v7.ui.DateField;
import com.vaadin.v7.ui.Field;
import com.vaadin.v7.ui.InlineDateField;
import com.vaadin.v7.ui.ListSelect;
import com.vaadin.v7.ui.PopupDateField;
import com.vaadin.v7.ui.TextField;

public class DefaultFieldGroupFieldFactoryTest {

    private DefaultFieldGroupFieldFactory fieldFactory;

    @Before
    public void setupFieldFactory() {
        fieldFactory = DefaultFieldGroupFieldFactory.get();
    }

    @Test
    public void noPublicConstructor() {
        Class<DefaultFieldGroupFieldFactory> clazz = DefaultFieldGroupFieldFactory.class;
        Constructor<?>[] constructors = clazz.getConstructors();
        assertEquals(
                "DefaultFieldGroupFieldFactory contains public constructors", 0,
                constructors.length);
    }

    @Test
    public void testSameInstance() {
        DefaultFieldGroupFieldFactory factory1 = DefaultFieldGroupFieldFactory
                .get();
        DefaultFieldGroupFieldFactory factory2 = DefaultFieldGroupFieldFactory
                .get();
        assertTrue(
                "DefaultFieldGroupFieldFactory.get() method returns different instances",
                factory1 == factory2);
        assertNotNull("DefaultFieldGroupFieldFactory.get() method returns null",
                factory1);
    }

    @Test
    public void testDateGenerationForPopupDateField() {
        Field f = fieldFactory.createField(Date.class, DateField.class);
        assertNotNull(f);
        assertEquals(PopupDateField.class, f.getClass());
    }

    @Test
    public void testDateGenerationForInlineDateField() {
        Field f = fieldFactory.createField(Date.class, InlineDateField.class);
        assertNotNull(f);
        assertEquals(InlineDateField.class, f.getClass());
    }

    @Test
    public void testDateGenerationForTextField() {
        Field f = fieldFactory.createField(Date.class, TextField.class);
        assertNotNull(f);
        assertEquals(TextField.class, f.getClass());
    }

    @Test
    public void testDateGenerationForField() {
        Field f = fieldFactory.createField(Date.class, Field.class);
        assertNotNull(f);
        assertEquals(PopupDateField.class, f.getClass());
    }

    public enum SomeEnum {
        FOO, BAR;
    }

    @Test
    public void testEnumComboBox() {
        Field f = fieldFactory.createField(SomeEnum.class, ComboBox.class);
        assertNotNull(f);
        assertEquals(ComboBox.class, f.getClass());
    }

    @Test
    public void testEnumAnySelect() {
        Field f = fieldFactory.createField(SomeEnum.class,
                AbstractSelect.class);
        assertNotNull(f);
        assertEquals(ListSelect.class, f.getClass());
    }

    @Test
    public void testEnumAnyField() {
        Field f = fieldFactory.createField(SomeEnum.class, Field.class);
        assertNotNull(f);
        assertEquals(ListSelect.class, f.getClass());
    }
}