package com.vaadin.server;

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

import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

import org.junit.Test;

import com.vaadin.annotations.Theme;
import com.vaadin.annotations.Widgetset;

/**
 * Tests for {@link UIProvider} class.
 *
 * @author Vaadin Ltd
 */
public class UIProviderTest {

    @Test
    public void getAnnotationFor_widgetsetAnnotationForSubclass_annotationFound() {
        assertNotNull("Widgetset annotation is not found for subclass",
                UIProvider.getAnnotationFor(TestClass.class, Widgetset.class));
    }

    @Test
    public void getAnnotationFor_themeAnnotationForSubclass_annotationFound() {
        assertNotNull("Theme annotation is not found for subclass",
                UIProvider.getAnnotationFor(TestClass.class, Theme.class));
    }

    @Test
    public void getAnnotationFor_themeAnnotationForSubclass_annotationOverridden() {
        assertEquals("Theme annotation is not overridden correctly in subclass",
                "c", UIProvider.getAnnotationFor(TestClass.class, Theme.class)
                        .value());
    }

    @Test
    public void getAnnotationFor_notInheritedAnnotationForSubclass_annotationFound() {
        assertNotNull("TestAnnotation annotation is not found for subclass",
                UIProvider.getAnnotationFor(TestClass.class,
                        TestAnnotation.class));
    }

    @Test
    public void getAnnotationFor_directAnnotationForSubclass_annotationFound() {
        assertNotNull("TestAnnotation1 annotation is not found for subclass",
                UIProvider.getAnnotationFor(TestClass.class,
                        TestAnnotation1.class));
    }

    @Test
    public void getAnnotationFor_annotationInheritedFromInterface_annotationFound() {
        assertNotNull("Theme annotation is not inherited from interface",
                UIProvider.getAnnotationFor(ClassImplementingInterface.class,
                        Theme.class));
    }

    @Retention(RetentionPolicy.RUNTIME)
    @Target(ElementType.TYPE)
    public @interface TestAnnotation {

    }

    @Retention(RetentionPolicy.RUNTIME)
    @Target(ElementType.TYPE)
    public @interface TestAnnotation1 {

    }

    @Widgetset("a")
    @Theme("b")
    @TestAnnotation
    public static class TestSuperClass {

    }

    @TestAnnotation1
    @Theme("c")
    public static class TestClass extends TestSuperClass {

    }

    @Theme("d")
    public interface InterfaceWithAnnotation {
    }

    public static class ClassImplementingInterface
            implements InterfaceWithAnnotation {
    }

}