OsgiBeanSourceTest.java

/**
 * Copyright 2013 the original author or authors.
 * 
 * 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 io.neba.core.util;

import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Mock;
import org.mockito.runners.MockitoJUnitRunner;
import org.osgi.framework.Bundle;
import org.springframework.beans.factory.BeanFactory;

import static org.assertj.core.api.Assertions.assertThat;
import static org.mockito.Matchers.eq;
import static org.mockito.Mockito.*;
import static org.osgi.framework.Bundle.ACTIVE;
import static org.osgi.framework.Bundle.UNINSTALLED;

/**
 * @author Olaf Otto
 */
@RunWith(MockitoJUnitRunner.class)
public class OsgiBeanSourceTest {
    @Mock
    private BeanFactory factory;
    @Mock
    private Bundle bundleOne;
    @Mock
    private Bundle bundleTwo;

    private String beanName = "testBean";
    private String beanSourceAsString;

    private OsgiBeanSource<Object> testee;

    @Before
    public void prepareBeanSource() {
        doReturn(ACTIVE).when(this.bundleOne).getState();
        doReturn(ACTIVE).when(this.bundleTwo).getState();
        doReturn(123L).when(this.bundleOne).getBundleId();
        doReturn(1234L).when(this.bundleTwo).getBundleId();
        this.testee = new OsgiBeanSource<>(this.beanName, this.factory, this.bundleOne);
    }
    
    @Test
    public void testToStringRepresentation() throws Exception {
        modelSourceToString();
        assertBeanSourceAsStringIs("Bean \"testBean\" from bundle with id 123");
    }
    
    @Test
    public void testBeanRetrievalFromFactory() throws Exception {
        getModel();
        verifyBeanSourceGetsModelFromBeanFactory();
    }
    
    @Test
    public void testBeanTypeRetrievalFromFactory() throws Exception {
        getModelType();
        verifyBeanSourceGetsBeanTypeFromFactory();
    }

    @Test
    public void testIsValidIsTrueWhenBundleIsActive() throws Exception {
        assertSourceIsValid();
    }

    @Test
    public void testIsValidIsTrueWhenBundleIsNotActive() throws Exception {
        withUninstalledBundles();
        assertSourceIsInvalid();
    }

    @Test
    public void testHashCodeAndEquals() throws Exception {
        OsgiBeanSource<?> one = new OsgiBeanSource<>("one", mock(BeanFactory.class), this.bundleOne);
        OsgiBeanSource<?> two = new OsgiBeanSource<>("one", mock(BeanFactory.class), this.bundleOne);

        assertThat(one.hashCode()).isEqualTo(two.hashCode());
        assertThat(one).isEqualTo(two);
        assertThat(two).isEqualTo(one);

        one = new OsgiBeanSource<>("one", mock(BeanFactory.class), this.bundleOne);
        two = new OsgiBeanSource<>("two", mock(BeanFactory.class), this.bundleOne);

        assertThat(one.hashCode()).isNotEqualTo(two.hashCode());
        assertThat(one).isNotEqualTo(two);
        assertThat(two).isNotEqualTo(one);

        one = new OsgiBeanSource<>("one", mock(BeanFactory.class), this.bundleOne);
        two = new OsgiBeanSource<>("one", mock(BeanFactory.class), this.bundleTwo);

        assertThat(one.hashCode()).isNotEqualTo(two.hashCode());
        assertThat(one).isNotEqualTo(two);
        assertThat(two).isNotEqualTo(one);
    }

    private void assertSourceIsInvalid() {
        assertThat(this.testee.isValid()).isFalse();
    }

    private void withUninstalledBundles() {
        doReturn(UNINSTALLED).when(this.bundleOne).getState();
        doReturn(UNINSTALLED).when(this.bundleTwo).getState();
    }

    private void assertSourceIsValid() {
        assertThat(this.testee.isValid()).isTrue();
    }

    private void verifyBeanSourceGetsBeanTypeFromFactory() {
        verify(this.factory).getType(eq(this.beanName));
    }

    private void getModelType() {
        this.testee.getBeanType();
    }

    private void verifyBeanSourceGetsModelFromBeanFactory() {
        verify(this.factory).getBean(eq(this.beanName));
    }

    private void getModel() {
        this.testee.getBean();
    }

    private void assertBeanSourceAsStringIs(String string) {
        assertThat(this.beanSourceAsString).isEqualTo(string);
    }

    private void modelSourceToString() {
        this.beanSourceAsString = this.testee.toString();
    }
}