/*
 * Copyright 2008,  Unitils.org
 *
 * 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 org.unitils.inject;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import static org.junit.Assert.fail;
import org.junit.Before;
import org.junit.Test;
import org.unitils.UnitilsJUnit4;
import org.unitils.core.ConfigurationLoader;
import org.unitils.core.UnitilsException;
import org.unitils.inject.annotation.InjectInto;

import java.util.Properties;

/**
 * @author Filip Neven
 * @author Tim Ducheyne
 */
public class InjectModuleInjectIntoExceptionsTest extends UnitilsJUnit4 {

    private static final Log logger = LogFactory.getLog(InjectModuleInjectIntoExceptionsTest.class);

    private TestInject_TargetIsNull testInject_targetIsNull = new TestInject_TargetIsNull();
    private TestInject_TargetDoesntExist testInject_targetDoesntExist = new TestInject_TargetDoesntExist();
    private TestInject_NoTargetSpecified testInject_noTargetSpecified = new TestInject_NoTargetSpecified();
    private TestInject_InvalidOGNLExpression testInject_invalidOGNLExpression = new TestInject_InvalidOGNLExpression();
    private TestInject_NonExistingPropertyInOGNLExpression testInject_nonExistingPropertyInOGNLExpression = new TestInject_NonExistingPropertyInOGNLExpression();

    private InjectModule injectModule = new InjectModule();


    @Before
    public void setUp() throws Exception {
        Properties configuration = new ConfigurationLoader().loadConfiguration();
        injectModule.init(configuration);
    }


    @Test
    public void testInject_targetIsNull() {
        try {
            injectModule.injectObjects(testInject_targetIsNull);
            fail("UnitilsException should have been thrown");
        } catch (UnitilsException e) {
            // Expected flow
            logger.debug(this, e);
        }
    }


    @Test
    public void testInject_targetDoesntExist() {
        try {
            injectModule.injectObjects(testInject_targetDoesntExist);
            fail("UnitilsException should have been thrown");
        } catch (UnitilsException e) {
            // Expected flow
            logger.debug(this, e);
        }
    }


    @Test
    public void testInject_noTargetSpecified() {
        try {
            injectModule.injectObjects(testInject_noTargetSpecified);
            fail("UnitilsException should have been thrown");
        } catch (UnitilsException e) {
            // Expected flow
            logger.debug(this, e);
        }
    }


    @Test
    public void testInject_invalidOGNLExpression() {
        try {
            injectModule.injectObjects(testInject_invalidOGNLExpression);
            fail("UnitilsException should have been thrown");
        } catch (UnitilsException e) {
            // Expected flow
            logger.debug(this, e);
        }
    }


    @Test
    public void testInject_NonExistingPropertyInOGNLExpression() {
        try {
            injectModule.injectObjects(testInject_nonExistingPropertyInOGNLExpression);
            fail("UnitilsException should have been thrown");
        } catch (UnitilsException e) {
            // Expected flow
            logger.debug(this, e);
        }
    }

    @SuppressWarnings("unused")
    public class TestInject_TargetIsNull {

        @InjectInto(target = "injectOn", property = "injectOnProperty")
        private ToInject toInject;

        private InjectOn injectOn;

    }

    @SuppressWarnings("unused")
    public class TestInject_TargetDoesntExist {

        @InjectInto(target = "nonExisting", property = "injectOnProperty")
        private ToInject toInject;
    }

    @SuppressWarnings("unused")
    public class TestInject_NoTargetSpecified {

        @InjectInto(property = "injectOnProperty")
        private ToInject toInject;
    }

    @SuppressWarnings("unused")
    public class TestInject_InvalidOGNLExpression {

        @InjectInto(target = "injectOn", property = "@#{[^")
        private ToInject toInject;

        private InjectOn injectOn = new InjectOn();
    }

    @SuppressWarnings("unused")
    public class TestInject_NonExistingPropertyInOGNLExpression {

        @InjectInto(target = "injectOn", property = "nonExisting")
        private ToInject toInject;

        private InjectOn injectOn = new InjectOn();
    }

    /**
     * Object to inject
     */
    public class ToInject {
    }

    /**
     * Object to inject into
     */
    public class InjectOn {
    }
}