org.mybatis.guice.AbstractGuiceTestExtension.java Source code

Introduction

Here is the source code for org.mybatis.guice.AbstractGuiceTestExtension.java

Source

/**
 *    Copyright 2009-2018 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 org.mybatis.guice;

import static com.google.inject.Guice.createInjector;
import static com.google.inject.name.Names.bindProperties;
import static com.google.inject.name.Names.named;
import static java.lang.System.currentTimeMillis;

import java.io.StringReader;
import java.sql.SQLException;
import java.util.List;
import java.util.Properties;

import javax.sql.DataSource;

import org.apache.ibatis.jdbc.ScriptRunner;
import org.apache.ibatis.mapping.Environment;
import org.apache.ibatis.session.SqlSessionFactory;
import org.junit.jupiter.api.extension.AfterEachCallback;
import org.junit.jupiter.api.extension.BeforeEachCallback;
import org.junit.jupiter.api.extension.ExtensionContext;
import org.junit.jupiter.api.extension.TestInstanceFactory;
import org.junit.jupiter.api.extension.TestInstanceFactoryContext;
import org.junit.jupiter.api.extension.TestInstantiationException;

import com.google.inject.Binder;
import com.google.inject.Injector;
import com.google.inject.Module;

abstract class AbstractGuiceTestExtension implements AfterEachCallback, BeforeEachCallback, TestInstanceFactory {

    private final Injector injector;

    public AbstractGuiceTestExtension() throws SQLException {
        final Contact contact = new Contact();
        contact.setFirstName("John");
        contact.setLastName("Doe");
        contact.setCreated(new CustomType(currentTimeMillis()));
        contact.setAddress(null);

        final Contact contactWithAddress = new Contact();
        contactWithAddress.setFirstName("John");
        contactWithAddress.setLastName("Doe");
        contactWithAddress.setCreated(new CustomType(currentTimeMillis()));

        final Address address = new Address();
        address.setNumber(1234);
        address.setStreet("Elm street");
        contactWithAddress.setAddress(address);

        final Counter counter = new Counter();

        // bindings
        final List<Module> modules = this.createMyBatisModule();
        modules.add(new Module() {
            @Override
            public void configure(Binder binder) {
                bindProperties(binder, createTestProperties());
                binder.bind(Contact.class).toInstance(contact);
                binder.bind(Contact.class).annotatedWith(named("contactWithAddress"))
                        .toInstance(contactWithAddress);
                binder.bind(Counter.class).toInstance(counter);
            }
        });
        this.injector = createInjector(modules);

        // prepare the test db
        final Environment environment = this.injector.getInstance(SqlSessionFactory.class).getConfiguration()
                .getEnvironment();
        final DataSource dataSource = environment.getDataSource();
        final ScriptRunner runner = new ScriptRunner(dataSource.getConnection());
        runner.setAutoCommit(true);
        runner.setStopOnError(true);
        runner.runScript(new StringReader("DROP TABLE IF EXISTS contact;"
                + "CREATE TABLE contact (id int GENERATED BY DEFAULT AS IDENTITY (START WITH 1), "
                + "first_name VARCHAR(20) NOT NULL, " + "last_name VARCHAR(20) NOT NULL, " + "created TIMESTAMP, "
                + "address VARCHAR(100) DEFAULT NULL) ;"));
        runner.closeConnection();
    }

    protected abstract List<Module> createMyBatisModule();

    protected abstract Properties createTestProperties();

    @Override
    public Object createTestInstance(TestInstanceFactoryContext factoryContext, ExtensionContext extensionContext)
            throws TestInstantiationException {
        return this.injector.getInstance(factoryContext.getTestClass());
    }

    @Override
    public void afterEach(ExtensionContext context) throws Exception {
        CleanDatabaseRule extension = injector.getInstance(CleanDatabaseRule.class);
        extension.evaluate();
    }

    @Override
    public void beforeEach(ExtensionContext context) throws Exception {
        CleanDatabaseRule extension = injector.getInstance(CleanDatabaseRule.class);
        extension.evaluate();
    }

}