/*
 * Copyright 2012-present 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
 *
 *      https://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.springframework.boot.jdbc;

import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.SQLException;

import javax.sql.DataSource;

import org.junit.jupiter.api.Test;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.MethodSource;

import org.springframework.jdbc.datasource.embedded.EmbeddedDatabase;
import org.springframework.jdbc.datasource.embedded.EmbeddedDatabaseBuilder;
import org.springframework.jdbc.datasource.embedded.EmbeddedDatabaseType;

import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatIllegalArgumentException;
import static org.mockito.BDDMockito.given;
import static org.mockito.Mockito.mock;

/**
 * Tests for {@link EmbeddedDatabaseConnection}.
 *
 * @author Stephane Nicoll
 * @author Nidhi Desai
 */
class EmbeddedDatabaseConnectionTests {

	@Test
	void h2CustomDatabaseName() {
		assertThat(EmbeddedDatabaseConnection.H2.getUrl("mydb"))
			.isEqualTo("jdbc:h2:mem:mydb;DB_CLOSE_DELAY=-1;DB_CLOSE_ON_EXIT=FALSE");
	}

	@Test
	void derbyCustomDatabaseName() {
		assertThat(EmbeddedDatabaseConnection.DERBY.getUrl("myderbydb"))
			.isEqualTo("jdbc:derby:memory:myderbydb;create=true");
	}

	@Test
	void hsqldbCustomDatabaseName() {
		assertThat(EmbeddedDatabaseConnection.HSQLDB.getUrl("myhsqldb")).isEqualTo("jdbc:hsqldb:mem:myhsqldb");
	}

	@Test
	void getUrlWithNullDatabaseNameForHsqldb() {
		assertThatIllegalArgumentException().isThrownBy(() -> EmbeddedDatabaseConnection.HSQLDB.getUrl(null))
			.withMessageContaining("DatabaseName must not be empty");
	}

	@Test
	void getUrlWithEmptyDatabaseNameForHsqldb() {
		assertThatIllegalArgumentException().isThrownBy(() -> EmbeddedDatabaseConnection.HSQLDB.getUrl("  "))
			.withMessageContaining("DatabaseName must not be empty");
	}

	@ParameterizedTest(name = "{0} - {1}")
	@MethodSource("embeddedDriverAndUrlParameters")
	void isEmbeddedWithDriverAndUrl(String driverClassName, String url, boolean embedded) {
		assertThat(EmbeddedDatabaseConnection.isEmbedded(driverClassName, url)).isEqualTo(embedded);
	}

	static Object[] embeddedDriverAndUrlParameters() {
		return new Object[] {
				new Object[] { EmbeddedDatabaseConnection.H2.getDriverClassName(), "jdbc:h2:~/test", false },
				new Object[] { EmbeddedDatabaseConnection.H2.getDriverClassName(), "jdbc:h2:mem:test;DB_CLOSE_DELAY=-1",
						true },
				new Object[] { EmbeddedDatabaseConnection.H2.getDriverClassName(), null, true },
				new Object[] { EmbeddedDatabaseConnection.HSQLDB.getDriverClassName(), "jdbc:hsqldb:hsql://localhost",
						false },
				new Object[] { EmbeddedDatabaseConnection.HSQLDB.getDriverClassName(), "jdbc:hsqldb:mem:test", true },
				new Object[] { EmbeddedDatabaseConnection.HSQLDB.getDriverClassName(), null, true },
				new Object[] { EmbeddedDatabaseConnection.DERBY.getDriverClassName(), "jdbc:derby:memory:test", true },
				new Object[] { EmbeddedDatabaseConnection.DERBY.getDriverClassName(), null, true },
				new Object[] { "com.mysql.cj.jdbc.Driver", "jdbc:mysql:mem:test", false },
				new Object[] { "com.mysql.cj.jdbc.Driver", null, false },
				new Object[] { null, "jdbc:none:mem:test", false }, new Object[] { null, null, false } };
	}

	@Test
	void isEmbeddedWithH2DataSource() {
		testEmbeddedDatabase(new EmbeddedDatabaseBuilder().setType(EmbeddedDatabaseType.H2).build());
	}

	@Test
	void isEmbeddedWithHsqlDataSource() {
		testEmbeddedDatabase(new EmbeddedDatabaseBuilder().setType(EmbeddedDatabaseType.HSQL).build());
	}

	@Test
	void isEmbeddedWithDerbyDataSource() {
		testEmbeddedDatabase(new EmbeddedDatabaseBuilder().setType(EmbeddedDatabaseType.DERBY).build());
	}

	void testEmbeddedDatabase(EmbeddedDatabase database) {
		try {
			assertThat(EmbeddedDatabaseConnection.isEmbedded(database)).isTrue();
		}
		finally {
			database.shutdown();
		}
	}

	@Test
	void isEmbeddedWithUnknownDataSource() throws SQLException {
		assertThat(EmbeddedDatabaseConnection.isEmbedded(mockDataSource("unknown-db", null))).isFalse();
	}

	@Test
	void isEmbeddedWithH2File() throws SQLException {
		assertThat(EmbeddedDatabaseConnection
			.isEmbedded(mockDataSource(EmbeddedDatabaseConnection.H2.getDriverClassName(), "jdbc:h2:~/test")))
			.isFalse();
	}

	@Test
	void isEmbeddedWithMissingDriverClassMetadata() throws SQLException {
		assertThat(EmbeddedDatabaseConnection.isEmbedded(mockDataSource(null, "jdbc:h2:meme:test"))).isFalse();
	}

	@Test
	void isEmbeddedWithMissingUrlMetadata() throws SQLException {
		assertThat(EmbeddedDatabaseConnection
			.isEmbedded(mockDataSource(EmbeddedDatabaseConnection.H2.getDriverClassName(), null))).isTrue();
	}

	DataSource mockDataSource(String productName, String connectionUrl) throws SQLException {
		DatabaseMetaData metaData = mock(DatabaseMetaData.class);
		given(metaData.getDatabaseProductName()).willReturn(productName);
		given(metaData.getURL()).willReturn(connectionUrl);
		Connection connection = mock(Connection.class);
		given(connection.getMetaData()).willReturn(metaData);
		DataSource dataSource = mock(DataSource.class);
		given(dataSource.getConnection()).willReturn(connection);
		return dataSource;
	}

}
